bms 3000-ob · 2019. 3. 16. · bms 3000-ob ... screw (05) is located at the centre of the main...

BMS 3000-OB OPTICAL BRINELL HARDNESS TEST

BMS Bulut Makina Sanayi ve Ticaret Ltd. Şti. İkitelli Organize Sanayi Bölgesi Dolapdere Sanayi Sitesi

Ada 4 No : 7-9 İkitelli / İSTANBUL-TÜRKİYE Phone : +90 212 671 02 24 / 671 02 25 Fax : +90 212 671 02 26

web : www.bulutmak.com e-mail : [email protected]

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http://www.bulutmak.com/mailto:[email protected]

BMS 3000-OB Operation

Rev:00 2 / 30 Manual

1.Applicability & Range Of Application ............................................................................... 3 2.Technical Specifications ................................................................................................. 3 3.Constructıon Of The Machine ......................................................................................... 4

3.1 Loading System....................................................................................................... 4 3.2 Optic System .......................................................................................................... 4

3.2.1 Illumination System........................................................................................... 5 3.2.2 Magnification System ........................................................................................ 5 3.2.3 Measuring Device .............................................................................................. 5

3.3 Indexing System ..................................................................................................... 5 4.Installation Of The Machine ........................................................................................... 5

4.1 Unpacking .............................................................................................................. 5 4.2 Erection Free ......................................................................................................... 6 4.3 Cleaning ................................................................................................................. 6 4.4 Levelling Of The Machine ......................................................................................... 6 4.5 Weights .................................................................................................................. 6 4.6 Screen Assembly ..................................................................................................... 6 4.7 Hydraulic Oil Fill-Up ................................................................................................. 7 4.8 Electrical Connections .............................................................................................. 7 4.9 Loading Speed Adjustment ...................................................................................... 7

5.Preparation For The Test ............................................................................................... 7 6.Method Of Test ............................................................................................................ 7

6.1 To Get The Impression ............................................................................................ 7 6.2 To View The Impression .......................................................................................... 8 6.3 To Measure The Diameter Of Impression .................................................................. 8 6.4 Unclamping The Specimen ....................................................................................... 8 6.5 Evaluation Of The Test ............................................................................................ 9

7.Maıntenance Of The Machine ......................................................................................... 9 7.1 Maintenance Of The Machine ................................................................................... 9 7.2 Calibration Of The Machine .................................................................................... 10 7.3 Important Notes .................................................................................................... 10

8.Designation Of Machıne Parts ....................................................................................... 11 9.List Of Standard Accessories ........................................................................................ 13 10.Warranty Of The Machine .......................................................................................... 13 TABLE TO FIND BHN ...................................................................................................... 23 TABLE TO FIND BHN ...................................................................................................... 24 TABLE TO FIND BHN ...................................................................................................... 25 TABLE TO FIND BHN ...................................................................................................... 26 TABLE TO FIND BHN ...................................................................................................... 27 TABLE TO FIND BHN ...................................................................................................... 28 TABLE TO FIND BHN ...................................................................................................... 29 Annexture ‘A’ ................................................................................................................. 30 Annexture ‘B’ ................................................................................................................. 30



1.Applicability & Range Of Application Optical Brinell Hardness Tester, Model BMS 3000-OB, is designed for measuring the Brinell Hardness of Steel and other ferrous materials as well as non ferrous materials like Brass, Bronze, Aluminium etc. The machine is simple in design, easy to operate and has a facility to check hardness of flat, round or irregular shaped specimen with fixture. The machine is provided with optic system which enables viewing the indentation and also measurement of its diameter. This eliminates elaborate process of removing, specimen from the hardness tester and measuring diameter of indentation on a microscope provided separately. The time required for checking the hardness is only few seconds, hence it is ideal for production testing. The Machine Has Following Fields Of Application 1. Hardness testing of ferrous as well as non ferrous castings in foundries / engineering industries / material testing laboratories. 2. Heat treatment plants for hardness measurement before and after heat treatment. 3. Forging units.

2.Technical Specifications

1 Loads (kgf) 500 to 3000 in Stage of 250

2 Max. Test Height (mm) 380

3 Depth of Throat (mm) 200

4 Size of Base (Sq. mm) 400 x 686

5 Machine Height (mm) 1250

6 Drive Motor (H.P.) 0.33

7 Mains Supply (V/Hz/Ph) 400-440/50/3

8 Optical Device Direct reading optical device with 14x magnification.

9 Gross weight (kg) 350 (Approx.)

10 Diameter of balls used for indentation (mm)

10 or 5

11 Max. diameter of indentation which can be measured on Screen (mm)

8

12 Least Count of measuring device (mm)

0.01

13 Oil used for Hydraulic system Servo system 32



3.Constructıon Of The Machine The machine body is of fully enclosed steel fabrication which protects the inside mechanisms and systems from dust and extraneous elements. The machine can be divided into three systems. 1. Loading system. 2. Optic system. 3. Indexing system.

3.1 Loading System (Refer Drg. No. 1,2 & 3) The Machine has C shaped body (01) covered with Top cover (02) and Back Cover (03). The lower part of the Body carries a main nut (04) which is resting on thrust bearing (06). Main Screw (05) is located at the centre of the Main Nut. This main screw can be raised or lowered with the help of main nut depending on the height of the specimen. The specimen supporting table (07) is fitted at the main screw top. Bush holder (08) is fitted from bottom to the upper arm of the C frame. Bush (09) is shrunk fitted in the bush holder. There are four compression springs (12) equi-spaced in the bush holder. Spindle (10) is guided in the bush and rests on the springs (12). Due to the springs there is always contact between flat support on spindle (11) and male vee on the main lever (16). Base of index head (09) is fixed at the bottom of the spindle. Index head (13) is free to rotate between two needle roller bearings (14). The bearings are fixed between base (9) and bearing cap (09 A). Upper support plate (88) is fixed at the bottom of bush holder (08) Two support bars (89) are fixed to upper support plate. Lower support plate (90) is fixed to these bars at such a position that when the specimen just touches the lower face of the lower support plate, its top face is at the focal point of the objective for a clear view of the indentation. Lever (15) is located in the upper portion of the frame. At front face of the lever male vees (16) are fitted. External pair of male vee rest on the fulcrum plate female vee 17) and (internal pair of male vee rests on the Spindle flat support (11). The middle portionof the lever carries roller (18) and roller shaft (19). The roller rests on the top adjuster (20). This top adjuster is screwed into the lifter (21). The tail of the lever carries hanger bracket (22). Bottom weight (23) and weight shaft (24) are fixed to the hanger bracket. Weights (25) can be stacked on the bottom weight. In the lower rear portion of the frame, compact power pack is installed. This power pack consists of Oil Tank (26) with oil tank cover (39). On the tank cover, flanged motor (27) is vertically mounted. The gear pump (28) which is submerged in the oil tank is connected to the motor by flexible coupling (29). The delivery of gear pump is connected to the specially designed cylinder (30). The cylinder block also contains direction control valve (32) throttle valve (33) and a pressure relief valve (34). D. C. valve can be operated by handle (35) which is screwed to the shifter shaft (36). Shifter shaft is connected to the spool via shifter arm (37). Oil level indicator (38) is provided on the tank cover. The lifter with its bottom adjuster (40) rests on the piston (31). Lifter is guided in the bush (41) and its positive contact with lever roller is achieved by providing compression spring (42).

3.2 Optic System (Refer Drg. No. 4 & 5) This mainly consists of following three sub assemblies : 1) Illumination System. 2) Magnification System and 3) Measuring Device.



3.2.1 Illumination System

The basic purpose of the system is to provide a bright condensed spot light on the object. It consists of the light source (43), at one end of the condenser tube (44) with a condenser lens (45) at its other end. A reflector mirror (52) is also provided for directing the light on the object.

3.2.2 Magnification System

The object is first magnified by the 2x objective (53) which is fixed at the bottom end of the optic tube (47). The optic tube is suspended exactly at the centre of the spindle with the help of holder support (48) and holder (49), The twice magnified image of the object is further magnified by 7 x projecting lens (54) fixed at the top side of the optic tube. Thus totally 14x magnified image is projected by the magnification system on the Prism (55), which changes its direction through 900 and projects it further on the screen (57).

3.2.3 Measuring Device

The 14x magnified image, projected on the screen, can be measured by this device. The types of glass scales, one frosted (67) and the other plain (66) are provided. These scales slide over each other and also have provision of Vernier Scale. A micrometer device (69) is also provided for further precise measurement of the image. The measuring device can be turned through complete 3600, so that measurement on any axis of the indentation can be taken.

3.3 Indexing System (Refer Drg. No. 1,2 & 3) The system is basically for bringing the indentor axis at the centre of spindle axis before loading and also for tilting the indentor so that the optic axis is made clear for viewing the indentation. The system operates automatically with a feedback from the position of the main lever. An adjustable knob (80) is provided at the tail end of the main lever. At the top position of the lever, it operates a D.C. valve (75). This D.C. valve further operates the Turret Pusher piston (82) and the Turret (13) is tilted along with indentor (65). Thus at the top most position of the lever, there is a clear view of the object to the optic system. For loading, when the lever starts moving down the D.C. valve returns to its original position and the piston of the turret pusher is pushed back. The spring loaded turret returns to its original position, making the indentor vertical, at the centre of the spindle and ready for indentation.

4.Installation Of The Machine

4.1 Unpacking

The machine being a precision testing equipment, should be handled carefully. Maximum precaution is tobe taken while packing to prevent any dam ages in transit. The moving part like loading mechanism is locked properly. The main packing box contains the basic machine. Other small packing boxes packed inside the main box contain the items as follows :

Box No. 1 : Screen Assembly.

Box No. 2 : Standard accessories of the Machine.

Box No. 3 : Weight set.

Instruction Manual is also kept separately in the main box. While unpacking the box, first remove the top cover. Then remove locking wooden struts inside the box and make machine free. Then remove all the four sides, takeout small boxes. Remove all the nuts of the foundation bolts and then the wooden base.



The machine has a through hole which facilitates lifting and transport by inserting a steel bar of approx. 25 mm dia. and projecting out about 100 mm from both sides of the machine. Open all other boxes and check the supplies as per packing list.

4.2 Erection Free

The place where the machine is to be erected must be dust and vibration Prepare the concrete foundation as per foundation plan (Refer Drg. No. 7) and provide slot for main screw, so that it can easily pass through the hole provided. Lift the machine from wooden base by crane / hoist and keep on the foundation in proper manner. Remove following articles from the machine which are used for proper packing. I. Remove top cover and of the machine, and then remove wooden pieces underneath

the main lever. II. Remove the wooden piece, threads and papers etc. between hanger and main lever

and make hanger bracket free. III. Remove paper, tape etc. which are used to wrap the main screw and its extension. IV. Remove the wooden piece between the lower support plate and the main screw

extension by rotating the main nut.

4.3 Cleaning

Clean all the parts which have been applied with grease / rust preventive. Never use solvents, which might damage the parts. Make up and down movement of main screw for three four times and remove grease locked in the threading. Ensure smooth, sliding motion of the main screw. Clean thrust bearing by removing it from the main nut. Also clean the main nut especially where thrust bearing rests. Apply thin film of lubricating oil to the bearing and reassemble it. Take out test table from main screw and check bearing surface of the main screw as well as of test table. Also swivel indexing head three four time and check whether the needle roller bearings are free or not.

4.4 Levelling Of The Machine

Level the machine within 1 : 1000 by using compound lever. Top face of the test table to be used as a reference face. For levelling use four levelling screws provided for this purpose. (Provide steel strips at the bottom of levelling screws if necessary). After levelling, provide taper wedges / steel strips near all foundation bolts, tighten nuts, release levelling screws and re check the level, adjust again if necessary.

4.5 Weights

Weights of this machine are packed separately along with a weight shaft. Fit the weight shaft with bottom weight having tapping at the centre. Then tighten the same assembly to the hanger bracket with the help of check nut. The effective load applied by lever, hanger bracket, weight shaft and bottom weight is equivalent to 500 kg. Remaining ten loose weights have 250 kg. effective weight each.

4.6 Screen Assembly

Screen assembly is packed in a separate box. Open box carefully, clean all the parts with soft cotton cloth, carefully clean the glasses with Namda Cloth. Fix the assembly on front plate by using the bolts. Check free transverse motion of the glass pair by turning knurled knob and smooth sliding of plain glass over frosted glass by using thimble of the micrometer.



4.7 Hydraulic Oil Fill-Up

Remove oil indicator and fill up Avalon 58 or Servo system 32 oil approx.22 liters. Check the oil level and adjust suitably, avoided less or excess oil. Refit oil level indicator.

4.8 Electrical Connections (Refer Drg. No. 9.) Connect the plug of mains supply cord to the suitable mains socket. Press the green push button of starter (59) and check whether motor (27) is rotating according to the arrow. The earthing should be done by connecting the earth wire to brass screw functioning of the light source.

4.9 Loading Speed Adjustment

The loading speed is adjusted in the factory at its optimum level and locked by check nut. In case of any speed change/adjustment is needed it can be done by loosening the check nut and adjusting the cheese head screw. Clock-wise rotation of the screw will decrease the loading speed and anti-clockwise rotation of the screw will increase the loading speed.

5.Preparation For The Test Check and adjust if required the following functions of the system before starting the first sample test. Keep only bottom weight (500 kg. load) for initial testing. 5.1 The main screw should be taken up and down several times to confirm its free motion. 5.2 Start the electric motor keeping the handle at ‘Load’ position.

Change the handle to ‘Unload’ position and check that the lever starts going up. 5.3 When the lever goes to the top most position it should operate the D.C. valve. The

movement of the D.C. valve should be around 10 mm. 5.4 When the lever is at the top position the turret should get indexed such that the optic

axis is clear for view. 5.5 Position a test block with indentation on the support table and take up screw such that

the specimen just touches the lower support plate. 5.6 For confirming clarity of optics please check following points in this position. 5.6.1. A bright spot light should be available from the condensing system on the test piece. 5.6.2. The position of lower support plate should have been adjusted such that a clear image

of the object is seen on the screen. 5.6.3. For checking alignment of indentor axis and optic axis a fresh indentation should e

taken with full 3000 kg. load and 10 mm ball indentor. The image of the indentation should come exactly at the centre of the screen.

5.7 For checking the loading cycle, load the specimen by positioning the lever to ‘Load’ position. Confirm that the operation of the limit switch and indicating lamp are proper. i. e. as soon as full load is applied, the indicating lamp should glow.

5.8 Unload the specimen, check the indentation. Take down the main screw and remove the specimen.

6.Method Of Test For carrying out complete test the following procedure should be adopted very carefully.

6.1 To Get The Impression

6.1.1. Select proper size ball holder and fix it to the turret. Also arrange desired loads on the weight shaft. The ball size and weights to be selected as per the material to be tested. Refer following table for selection.



Dia of Ball (D)

Force required for various materials (kg.)

Ferrous 30 D2 Brass 10 D2 Aluminium 5 D2

10 mm 3000 1000 500

5 mm 750 - -

6.1.2 Actuate the toggle switch to switch on the lamp of light source. 6.1.3 Start the motor. 6.1.4 Keep the handle to unload position and wait until lever and hanger bracket reaches its

top position. 6.1.5 Place the specimen on the test table. 6.1.6 Turn the main nut in clockwise direction, so that it just touches the bottom face

of the lower support plate. 6.1.7 Now turn the handle to ‘Load’ position. Lever starts coming down and load is applied

on the specimen. The ball indentor penetrates in the specimen to some extent and stops as the hardness of the specimen resists. Load indicating light illuminates. Now load is fully applied.

6.1.8 The time of loading should be 8 to 10 seconds. On completion of loading period, turn the handle to ‘Unload’ position. with this the lever goes up and the load indicating lamp is put off.

6.2 To View The Impression

On reaching the lever at its top position the turret will get automatically indexed and the round image of indentation will be visible at the centre of the screen. This image will be ith 14x magnification.

6.3 To Measure The Diameter Of Impression (Refer Drg. No. 6) The plain and frosted glass of the screen have uniform long graduations. Distance between consecutive line is 1 mm. There are 10 short graduations on frosted glass having distance 0.1 mm between two. Micrometer fitted to the screen has 10 equal divisions. Least count of micrometer is 0.01 mm. The diameter of the impression can be determined as below 6.3.1 Adjust and touch nearest long graduation at left of the impression by turning knob. 6.3.2 Adjust the nearest long graduation on the right of the impression by turning thimble of

the micrometer, so that the graduation touches the impression at right. The middle line marked with 0, which is simultaneously moved must be always within the vernier scale.

6.3.3 Count the long graduations enclosing the impression excluding the middle marked 0. The number of the division gives first place after the decimal point.

6.3.4 Now count complete divisions on the vernier scale just before the long graduation. The number of the division gives first place after decimal point.

6.3.5 Now read the micrometer reading. The number on micrometer give sec- ond place after decimal point.

Beginners in handling the measuring equipment has a tendency to round off small values which causes to differ the calculated Brinell Hardness Number from the actual one.

6.4 Unclamping The Specimen

After the impression has been measured, unclamp the test specimen for this turn the main nut anti-clockwise to lower the specimen. Now take out the specimen, clamp it at another spot or replace by new one. If tests are over, then switch off the motor and condensing lamp.



6.5 Evaluation Of The Test

The Brinell Hardness No. is determined as the mean value of at least two impressions. For this refer the charts provided. See load applied, ball diameter and then see BHN according to the diameter of impression.

7.Maıntenance Of The Machine The machine is being accurate and sensitive testing machine, it needs careful maintenance and attendance. Following is the recommended check list for effective and preventive maintenance of the machine.

7.1 Maintenance Of The Machine

FREQUENCY

ASSEMBLY/PARTS TO BE CHECKED.

ACTIVITY

I) DAILY a) Main screw & thurust bearing ) b) Main nut ) c) Spindle ) d) Test tables e) Lower support plate ) f) Ball holder h) D.C. valve & turret pusher i) Screen assemby

Clean thoroughly and lubricate properly with lub Oil Clean thoroughly and Clean thoroughly Clean thoroughly Check whether turret swivell smoothly Check it for oil leakage Make it clean & dust free. Clean throughly especially glass & hood.Check easy motion of turning knob and micrometer.

II) QUARTERLY (By 3 months)

a) Hydraulic System

1.Check the Oil level & refill if required 2. Check easy movement of piston in the cylinder. 3.Check & adjust pres sure relief valve. 4. Check all hydraulic pipes & fittings, and tighten them properly to prevent any oil leakage. 5. Check turret pusher Tighten all couplings and cap screws properly. Check easy motion of spool against spring.


a) Hydraulic System 6. Check turret pusher ighten all couplings & cap screws properly check easy motion of the piston.

b) Electrical System Check & adjust the limit switch for proper functioning. Check functioning of all components and replace if required.



* For detailed instructions regarding replacement of bulb of condenser lamp please refer Annexture ‘B’.


c) Turret swivelling System d) Optic System e) Thrust Bearing ) f) Needle roller bearings ) g) Ball bearing of hanger bracket

Check functioning of bearings and apply grease. Check & adjust mirror if required, such that light beam will be focussed vertically on the impression. Clean thoroughly and apply grease.

III) YEARLY a) Hydraulic System b) Foundation c) Total Machine

Clean the oil tank replace the oil. Check foundation nuts & tighten if required. Check machine level. Tighten all the nuts. Check nuts & screws properly & lubricate all the moving parts. Recalibrate for full load, check the magnification of the optic system. Apply grease to the motor bearings. Check all moving parts for wear & tear & replace by new one if required.

7.2 Calibration Of The Machine

Immediately after installation of the machine, load calibration should be checked. This is to be checked by using standard calibrated Proving Ring (com pression type). The results are to be tabulated and to be verified against the standard requirement. The error permissible for the load calibration is k 1 %. For check of the machine with the Brinell penetrators the standard calibrated hard ness test plate should be used. Steel balls being used as penetrator, should be checked frequently. If there are deviations, replace the balls. Replace the condenser lamp every 1000 operating hours. For this, take off condensers tube, remove two screws and take off bulb holder, replace the bulb and reassemble the same. Adjust the light intensity by moving the holder forward or backward in the tube.

7.3 Important Notes

7.3.1 Turn the main nut continuously, jerky turning should be avoided. 7.3.2 When the interior of the machine is cleaned, make sure that the bush holder, spindle,

turret, bearings, optical parts are not contaminated. Remove dust deposits on these parts which may affect the projection with a soft wash buck-skin.

7.3.3 If the impression is not centrally displayed of the focussing screen it is possible : a) that, optic axis is not aligned with axis of main screw. Check the perpendicu larity & the centre line of the optic tube with reference to the test table and main screw. b) That, the ball holder may not be exactly vertical. Check the perpendicularity of the ball holder. Also if the springs attached to the turret are too weak then there is a possibility that turret may swievel while load is being applied. Use springs of proper stiffness.

7.3.4 If the impression is laterally displaced on the screen, then take off the top cover and slightly turn the prism to get impression at centre.

7.3.5 Prolonged Standstills For prolonged standstills, clean the machine thoroughly and drain the oil from oil tank.



Preserve this oil in a can. all shining parts should be coated with anti corrosive material. The electrical supply should be cut off. Machine should be completely covered. Utmost care should be taken to prevent dust contamination with the optic parts.

7.3.6 Labour Safety For repairs and checks of the electrical equipment, pull out the mains plug. Clamp the specimen on the supports. Bulky or projecting specimens should be supported mechanically or manually.

8.Designation Of Machıne Parts

Sr. No.

Name Sr. No.

Name

01.

02.

03.

04.

05.

06.

07.

08.

09.

09A.

10.

11.

12.

13.

13A.

13B.

14.

14A.

Main Body

Top Cover

Back Cover

Main Nut

Main Screw

Thrust Bearing

Support / Test Table

Bush holder

Index Base

Bearing Cap

Spindle

Spindle support

Springs for spindle

Indexing head / turret

Turret spring

Spring pin

Turret bearing

Bearing Cover

15.

16.

17.

17A.

18.

19.

20.

21.

22.

23.

24.

25.

26.

27.

28.

29.

30.

31.

Main Lever

Male Vee for lever

Fulcrum Female Vee

Fulcrum Support Roller

Roller Shaft

Top adjuster

Lifter

Hanger bracket

Bottom weight

Weight Shaft

Weights

Oil Tank Flanged

motor Gear pump

Flexible coupling Main

cylinder block Main

Piston



Sr. No.

Name Sr. No.

Name

32.

33.

34.

35.

36.

37.

38.

39.

40.

41.

42.

43.

44.

45.

46.

47.

48.

49.

50.

51.

52.

53.

54.

55.

56.

57.

58.

59.

60.

61.

62.

63.

64.

65.

Spool

Throttle valve

Pressure relife valve

Handle

Shifter shaft

Shifer arm

Oil level indicator

Tank cover Bottom

adjuster Lifter

guide Bush Spring

for lifter

Condenser lamp / Illuminator

Condenser tube

Condenser lens

Transformer Optic

tube

Optic holder support

Optic tube holder

Coupler

Mirror tube

Mirror / Reflector

Objective 2x

Projecting lens 7x

Prism

Prism holder

Screen assembly

Front Plate

Starter for motor

Toggle switch

Load indicating lamp

Limit Switch

Limit Switch bracket

Limit Switch actuater

Ball holder

65A.

66.

67.

68.

69.

70.

71.

72.

73.

74.

75.

76.

77.

78.

79.

80.

81.

82.

83.

84.

85.

86.

87.

88.

89.

89A.

90.

91.

92.

Ball holder support

Plain Glass

Frosted Glass

Turning knob

Micrometer

Knurled screw

Hood

Ball seat 10 mm

Ball seat 5mm

Shifter bush

D.C. valve body

D.C. valve cover

Spool for D.C. valve External

Circlip for spool Spring for

spool

Stroke adjusting knob

Bracket for D.C. valve

Turret pusher body Turret

pusher cover Piston for

turret pusher

‘O’ ring for piston (84)

Adjuster

Guide pin

Upper support plate

Support bar

Spacer for support bar

Lower support plate

Hydraulic pipe Hydraulic

fittings



9.List Of Standard Accessories

Sr. No.

Name

Qty.

01. Testing Table 200 mm, for flat specimen 1 No.

02.

Testing Table 70 mm with ‘V’ groove for round

jobs 10 mm to 80 mm

1 No.

03. Ball holder 5 mm 1 No.

04. Ball holder 10 mm 1 No.

05. Test Block HB 5 / 750 1 No.

06. Test Block HB 10 / 3000 1 No.

07. Allen Spanner 4 Nos.

08. Instruction Manual 1 Book

09. Steel ball 10 mm 5 Nos.

10.

Steel ball 5 mm 5 Nos.

11. Tommy bar for fixing / removing extension 1 No.

12. DIE spanner 2 Nos.

10.Warranty Of The Machine The performance of Optical Brinell Hardness Testing Machine, Model BMS 3000-OB, Machine Serial No. , is warranted against defective material and workmanship for a period of 12 months from the date of despatch or 6 months from the date of commissioning whichever is earlier, provided the machine is handled with all precautions described in this Instruction Manual. However the warranty is limited for the free repair / replacement of defective parts only and dose not cover worn-out parts due to normal wear and tear and also damages to the machine / parts due to mishandling. Also this warranty does not cover electrical parts, bearings, optical parts and other such items.



TABLE TO FIND BHN BY USING BALL OF 5 mm

‘d’ LOAD IN kg

‘d’ LOAD IN kg

750 250 125 62.5 750 250 125 62.5

1.00

1.01

1.02

1.03

1.04

1.05

1.06

1.07

1.08

1.09

1.10

1.11

1.12

1.13

1.14

1.15

1.16

1.17

1.18

1.19

1.20

1.21

1.22

1.23

1.24

1.25

1.26

1.27

1.28

1.29

1.30

1.31

1.32

1.33

1.34

1.35

1.36

945 315 158.0 78.8

926 309 154.5 77.2

908 303 151.5 75.7

890 297 148.5 74.2

873 291 145.5 72.7

856 285 142.5 71.2

840 280 140.0 70.0

824 275 137.5 68.7

809 270 135.0 67.5

794 264 132.0 66.0

780 260 130.0 65.0

765 255 127.0 63.8

752 251 125.0 62.7

738 246 123.0 61.5

725 242 121.0 60.4

712 238 119.0 59.3

700 233 117.0 58.3

688 229 115.0 57.3

676 225 113.0 56.3

665 222 111.0 55.4

653 218 109.0 54.4

643 214 107.0 53.6

632 211 105.0 52.7

621 207 103.0 51.8

611 204 102.0 50.9

601 200 100.0 50.1

592 197 99.0 49.3

582 194 98.0 48.5

573 191 96.0 47.8

564 188 94.0 47.0

555 185 93.0 46.3

547 182 91.0 45.6

538 179 89.0 44.8

530 177 88.00 44.2

522 174 87.00 43.5

514 171 86.00 42.8

507 169 85.00 42.3

1.37

1.38

1.39

1.40

1.41

1.42

1.43

1.44

1.45

1.46

1.47

1.48

1.49

1.50

1.51

1.52

1.53

1.54

1.55

1.56

1.57

1.58

1.59

1.60

1.61

1.62

1.63

1.64

1.65

1.66

1.67

168

1.69

1.70

1.71

1.72

1.73

499 166 83.0 41.6

492 164 82.0 41.0

485 162 81.0 40.4

477 160 79.0 39.8

471 157 78.0 39.3

464 154 77.0 38.7

457 152 76.0 38.1

451 150 75.0 37.6

444 148 74.0 37.0

438 146 73.0 36.5

432 144 72.0 36.0

426 142 71.0 35.5

420 140 70.0 35.0

415 138 69.0 34.6

409 136 68.0 34.1

404 134 67.0 33.7

398 133 66.0 33.3

393 131 65.0 32.8

388 129 64.0 32.3

383 128 64.0 31.8

378 126 63.0 31.5

373 124 62.0 31.1

368 123 61.0 30.7

363 121 60.0 30.3

359 120 60.0 29.8

354 118 59.0 29.2

350 117 58.0 29.0

345 115 57.5 28.8

341 114 57.0 28.6

337 112 56.2 28.1

333 111 55.6 27.8

329 110 54.8 27.4

325 108 54.2 27.1

321 107 53.5 26.8

317 106 52.9 26.6

313 104 52.2 26.1

309 103 51.5 25.8

‘d’ = Diameter of impression in mm



TABLE TO FIND BHN

BY USING BALL OF 5 mm

‘d’ LOAD IN kg

‘d’ LOAD IN kg

750 250 125 62.5 750 250 125 62.5

1.74

1.75

1.76

1.77

1.78

1.79

1.80

1.81

1.82

1.83

1.84

1.85

1.86

1.87

1.88

1.89

1.90

1.91

1.92

1.93

1.94

1.95

1.96

1.97

1.98

1.99

2.00

2.01

2.02

2.03

2.04

2.05

2.06

2.07

2.08

2.09

2.10

2.11

2.12

2.13

2.14

2.15

306 102 51.0 25.5

302 101 50.3 25.2

298 100 49.5 24.8

295 98 49.3 24.6

292 97 48.7 24.3

288 96 48.0 24.0

285 95 47.5 23.8

282 94 47.0 23.5

278 93 46.3 23.2

275 92 45.8 22.9

272 91 45.3 22.5

269 90 44.8 22.4

266 89 44.5 22.2

263 88 43.8 21.9

260 87 43.3 21.7

257 86 42.8 21.4

255 85 42.5 21.2

252 84 42.0 21.0

249 83 41.5 20.8

246 82 41.0 20.5

244 81 40.7 20.3

241 80 40.2 20.1

239 79 39.8 19.9

236 79 39.3 19.5

234 78 39.0 19.4

231 77 38.5 19.2

229 76 38.2 19.1

226 75 37.7 18.8

224 75 37.3 18.6

222 74 37.0 18.5

219 73 36.5 18.3

217 72 36.2 18.1

215 72 35.8 17.9

213 71 35.5 17.8

211 70 35.2 17.6

209 69 34.9 17.4

207 69 34.5 17.3

204 68 34.00 17.0

202 67.3 33.65 16.82

200 66.6 33.30 16.65

198 66.0 33.00 16.50

197 65.6 32.80 16.40

2.16

2.17

2.18

2.19

2.20

2.21

2.22

2.23

2.24

2.25

2.26

2.27

2.28

2.29

2.30

2.31

2.32

2.33

2.34

2.35

2.36

2.37

2.38

2.39

2.40

2.41

2.42

2.43

2.44

2.45

2.46

2.47

2.48

2.49

2.50

2.51

2.52

2.53

2.54

2.55

2.56

2.57

195 66.0 32.50 16.25

193 64.3 32.15 16.07

191 63.6 31.80 15.90

189 63.0 31.50 15.75

187 62.3 31.15 15.57

185 61.6 30.80 15.40

184 61.3 30.65 15.32

182 60.6 30.30 15.15

180 60.0 30.30 15.00

179 59.6 29.80 14.90

177 59.0 29.50 14.75

175 58.3 29.15 14.57

174 58.0 29.00 14.50

172 57.3 28.65 14.32

170 56.6 28.30 14.15

169 56.3 28.15 14.07

167 55.6 27.80 13.90

166 55.3 27.65 13.82

164 54.6 27.30 13.65

163 54.3 27.15 13.57

162 53.6 26.80 13.40

160 53.3 26.65 13.32

158 52.6 26.30 13.15

157 52.3 26.15 13.07

156 52.0 26.00 13.00

154 51.3 25.65 12.82

153 51.0 25.50 12.75

152 50.6 25.30 12.65

150 50.0 25.00 12.50

149 49.6 24.80 12.40

148 49.3 24.65 12.32

146 48.6 24.30 12.15

145 48.3 24.15 12.07

144 48.0 24.00 12.00

143 47.6 23.80 11.90

141 47.0 23.50 11.75

140 46.6 23.30 11.65

139 46.3 23.15 11.57

138 46.0 23.00 11.50

137 45.6 22.80 11.40

135 45.0 22.50 11.25

134 44.6 22.30 11.15




TABLE TO FIND BHN BY USING BALL OF 5 mm

‘d’ LOAD IN kg

‘d’ LOAD IN kg

750 250 125 62.5 750 250 125 62.5

2.58

2.59

2.60

2.61

2.62

2.63

2.64

2.65

2.66

2.67

2.68

2.69

2.70

2.71

2.72

2.73

2.74

2.75

2.76

2.77

2.78

2.79

2.80

2.81

2.82

2.83

2.84

2.85

2.86

2.87

2.88

2.89

2.90

2.91

2.92

2.93

2.94

2.95

2.96

2.97

2.98

2.99

3.00

3.01

3.02

3.03

133.0 44.30 22.15 11.70

132.0 44.00 22.00 11.00

131.0 43.60 21.80 10.90

130.0 43.30 21.65 10.82

129.0 43.00 21.50 10.75

128.0 42.60 21.30 10.65

127.0 42.30 21.15 10.57

126.0 42.00 21.00 10.50

125.0 41.60 20.80 10.40

124.0 41.30 20.65 10.32

123.0 41.00 20.50 10.25

122.0 40.60 20.30 10.15

121.0 40.30 20.15 10.07

120.0 40.00 20.00 10.00

119.0 39.60 19.80 9.90

118.0 39.30 19.65 9.82

117.0 39.00 19.50 9.75

116.0 38.60 19.30 9.65

115.0 38.30 19.15 9.57

114.0 38.00 19.00 9.50

113.0 37.60 18.80 9.40

112.0 37.30 18.65 9.32

111.0 37.00 18.50 9.25

110.0 36.60 18.30 9.15

110.0 36.60 18.30 9.15

109.0 36.30 18.15 9.07

108.0 36.00 18.00 9.00

107.0 35.60 17.80 8.90

106.0 35.30 17.65 8.82

105.0 35.00 17.50 8.75

105.0 35.00 17.50 8.75

104.0 34.60 17.30 8.65

103.0 34.30 17.15 8.57

102.0 34.00 17.00 8.50

101.0 33.60 16.80 8.40

101.0 33.60 16.80 8.40

99.9 33.30 16.65 8.32

99.2 33.10 16.55 8.27

98.4 32.80 16.40 8.20

97.7 32.60 16.30 8.15

96.9 32.30 16.15 8.07

96.2 32.10 16.05 8.02

95.5 31.80 15.90 7.95

94.8 31.60 15.80 7.90

94.1 31.36 15.68 7.84

93.4 31.13 15.56 7.78

3.04

3.05

3.06

3.07

3.08

3.09

3.10

3.11

3.12

3.13

3.14

3.15

3.16

3.17

3.18

3.19

3.20

3.21

3.22

3.23

3.24

3.25

3.26

3.27

3.28

3.29

3.30

3.31

3.32

3.33

3.34

3.35

3.36

3.37

3.38

3.39

3.40

3.41

3.42

3.43

3.44

3.45

3.46

3.47

3.48

3.49

3.50

92.7 30.90 15.40 7.72

92.0 30.66 15.33 7.66

91.3 30.43 15.21 7.60

90.6 30.20 15.00 7.55

90.0 30.00 14.88 7.50

89.3 29.76 14.78 7.44

88.7 29.56 14.66 7.39

88.0 29.33 14.56 7.33

87.4 29.13 14.45 7.28

86.7 28.90 14.35 7.22

86.1 28.70 14.20 7.17

85.5 28.50 14.10 7.12

84.9 28.30 14.00 7.07

84.3 28.10 13.90 7.02

83.7 27.90 13.80 6.97

83.1 27.70 13.70 6.92

82.5 27.60 13.60 6.87

81.9 27.30 13.50 6.82

81.3 27.10 13.40 6.77

80.7 26.90 13.35 6.72

80.1 26.70 13.26 6.67

79.6 26.53 13.16 6.63

79.0 26.33 13.06 6.58

78.4 26.13 12.98 6.53

77.9 25.96 12.88 6.49

77.3 25.76 12.80 6.44

76.8 25.60 12.70 6.40

76.2 25.40 12.61 6.35

75.7 25.23 12.53 6.30

75.2 25.06 12.45 6.26

74.8 24.90 12.35 6.22

74.2 24.70 12.26 6.17

73.0 24.53 12.18 6.13

73.1 24.36 12.10 6.09

72.6 24.20 12.01 6.00

72.1 24.03 11.93 6.00

71.6 23.86 11.80 5.96

71.1 23.70 11.76 5.92

70.6 23.53 11.68 5.88

70.1 23.36 11.60 5.84

69.6 23.20 11.60 5.80

69.2 23.06 11.53 5.76

68.7 22.90 11.40 5.72

68.2 22.73 11.36 5.68

67.7 22.56 11.36 5.64

67.3 22.43 11.21 5.60

66.8 22.26 11.13 5.56

d = Diameter of imparession in mm



TABLE TO FIND BHN


‘d’ LOAD IN kg

‘d’ LOAD IN kg

3000 1000 500 250 3000 1000 500 250

1.61

1.62

1.63

1.64

1.65

1.66

1.67

1.68

1.69

1.70

1.71

1.72

1.73

1.74

1.75

1.76

1.77

1.78

1.79

1.80

1.81

1.82

1.83

1.84

1.85

1.86

1.87

1.88

1.89

1.90

1.91

1.92

1.93

1.94

1.95

1.96

1.97

1.98

1.99

2.00

2.01

2.02

2.03

2.04

2.05

1464 488 244 122.0

1440 482 241 121.0

1428 476 238 119.0

1411 470 235 117.0

1393 464 232 116.0

1377 459 229 114.0

1360 453 227 113.0

1344 448 224 112.0

1328 443 221 111.0

1312 437 219 109.0

1297 432 216 108.0

1282 427 214 107.0

1267 422 211 106.0

1252 417 209 104.0

1238 413 206 103.0

1223 408 204 102.0

1210 403 202 101.0

1196 399 199 99.7

1183 394 197 98.5

1169 390 195 97.4

1156 385 193 96.4

1144 381 191 95.3

1133 377 188 94.2

1119 373 186 93.2

1106 369 184 92.2

1094 366 182 91.2

1083 361 180 90.2

1071 357 179 89.3

1060 353 177 87.9

1048 349 175 87.4

1037 346 173 86.5

1027 342 171 85.6

1016 339 169 84.7

1005 335 168 83.8

995 332 166 82.9

985 328 164 82.1

975 325 162 81.2

965 322 161 80.4

955 318 159 79.5

945 315 158 78.8

936 312 156 78.0

926 309 154 77.2

917 306 153 76.4

908 303 151 75.7

899 300 150 74.9

2.06

2.07

2.08

2.09

2.10

2.11

2.12

2.13

2.14

2.15

2.16

2.17

2.18

2.19

2.20

2.21

2.22

2.23

2.24

2.25

2.26

2.27

2.28

2.29

2.30

2.31

2.32

2.33

2.34

2.35

2.36

2.37

2.38

2.39

2.40

2.41

2.42

2.43

2.44

2.45

2.46

2.47

2.48

2.49

2.50

890 297 148.0 74.2

882 294 147.0 73.5

873 291 146.0 72.8

865 288 144.0 72.1

856 285 143.0 71.4

848 283 141.0 70.7

840 280 140.0 70.0

832 277 139.0 69.4

824 275 137.0 68.7

817 272 136.0 68.1

809 270 135.0 67.4

802 267 134.0 66.8

794 265 132.0 66.2

787 262 131.0 65.5

780 260 130.0 65.0

772 257 129.0 64.4

765 255 128.0 63.8

758 253 126.0 63.2

752 251 125.0 62.6

745 248 124.0 62.1

738 246 123.0 61.5

732 244 122.0 61.0

725 242 121.0 60.5

719 240 120.0 59.9

712 237 119.0 59.4

706 235 118.0 58.8

700 233 117.0 58.3

694 231 116.0 57.8

688 229 115.0 57.3

682 227 114.0 56.8

676 225 113.0 56.3

670 223 112.0 55.9

665 222 111.0 55.4

659 220 110.0 54.9

653 218 109.0 54.4

648 216 108.0 54.0

643 214 107.0 53.5

637 212 106.0 53.1

632 211 105.0 52.7

627 209 104.0 52.2

621 207 104.0 51.8

616 205 103.0 51.4

611 204 102.0 50.9

606 202 101.0 50.5

601 200 100.0 50.1 ‘d’ = Diameter of impression in mm



TABLE TO FIND BHN


‘d’ LOAD IN kg

‘d’ LOAD IN kg

3000 1000 500 250 3000 1000 500 250

2.51

2.52

2.53

2.54

2.55

2.56

2.57

2.58

2.59

2.60

2.61

2.62

2.63

2.64

2.65

2.66

2.67

2.68

2.69

2.70

2.71

2.72

2.73

2.74

2.75

2.76

2.77

2.78

2.79

2.80

2.81

2.82

2.83

2.84

2.85

2.86

2.87

2.88

2.89

2.90

2.91

2.92

2.93

2.94

2.95

597 199 99.4 49.7

592 197 98.6 49.3

587 196 97.8 48.9

582 194 97.1 46.6

578 193 96.3 48.1

573 191 95.5 47.8

569 190 94.8 47.4

564 188 84.0 47.0

560 187 93.3 46.0

555 185 93.6 46.3

551 184 91.8 45.9

547 182 91.1 45.6

543 181 90.4 45.2

538 179 89.7 44.9

534 178 89.0 44.5

530 177 88.4 44.2

526 175 87.7 43.8

522 174 87.0 43.5

518 173 86.4 43.2

514 171 85.7 42.9

510 170 85.1 42.5

507 169 84.4 42.2

503 168 83.8 41.9

499 166 83.2 41.6

495 165 82.6 41.3

492 164 81.9 41.0

488 163 81.3 40.7

485 162 80.8 40.4

481 160 80.2 40.2

477 159 79.6 40.0

474 158 79.0 39.5

471 157 78.4 39.2

467 156 77.9 38.9

464 155 77.3 38.7

461 154 76.8 38.4

457 152 76.2 38.1

454 151 75.7 37.8

451 150 75.1 37.6

448 149 74.6 37.3

444 148 74.1 37.0

441 147 73.6 36.8

438 146 73.0 36.5

435 145 72.5 36.3

432 144 72.0 36.0

430 143 71.5 35.8

2.96

2.97

2.98

2.99

3.00

3.01

3.02

3.03

3.04

3.05

3.06

3.07

3.08

3.09

3.10

3.11

3.12

3.13

3.14

3.15

3.16

3.17

3.18

3.19

3.20

3.21

3.22

3.23

3.24

3.25

3.26

3.27

3.28

3.29

3.30

3.31

3.32

3.33

3.34

3.35

3.36

3.37

3.38

3.39

3.40

426 142 71.0 35.5

423 141 70.5 35.3

420 140 70.1 35.0

417 139 69.6 34.8

415 138 69.1 34.6

412 137 68.6 34.3

409 136 68.2 34.1

406 135 67.7 33.9

404 135 67.3 33.6

401 134 66.8 33.4

398 133 66.4 33.2

395 132 65.9 33.0

393 131 65.5 32.7

390 130 65.0 32.5

388 129 64.6 32.3

385 128 64.2 32.1

383 128 63.8 31.9

380 127 63.3 31.7

378 126 62.9 31.5

375 125 62.5 31.3

373 124 62.1 31.1

370 123 61.7 30.9

368 123 61.3 30.7

366 122 60.9 30.5

363 121 60.5 30.3

361 120 60.1 30.1

359 120 59.8 29.9

356 119 59.4 29.7

354 118 59.0 29.5

352 117 58.6 29.3

350 117 58.3 29.1

347 116 57.9 29.0

345 115 57.5 28.8

343 114 57.2 28.6

340 114 56.8 28.4

339 113 56.5 28.2

337 112 56.1 28.1

335 112 55.8 27.9

333 111 55.4 27.5

331 110 55.1 27.5

329 110 54.8 27.4

326 109 54.4 27.2

325 108 54.1 27.0

323 108 53.8 26.8

321 107 53.4 26.5




TABLE TO FIND BHN


‘d’ LOAD IN kg

‘d’ LOAD IN kg

3000 1000 500 250 3000 1000 500 250

3.41

3.42

3.43

3.44

3.45

3.46

3.47

3.48

3.49

350

3.51

3.52

3.53

3.54

3.55

3.56

3.57

3.58

3.59

3.60

3.61

3.62

3.63

3.64

3.65

3.66

3.67

3.68

3.69

3.70

3.71

3.72

3.73

3.74

3.75

3.76

3.77

3.78

3.79

380

3.81

3.82

3.83

3.84

3.85

319 106.0 53.1 26.6

317 106.0 52.8 26.4

315 105.0 52.5 26.2

313 104.0 52.2 26.1

311 104.0 51.8 25.9

309 103.0 51.5 25.8

307 102.0 51.2 25.6

306 102.0 50.9 25.5

304 101.0 50.6 25.3

302 101.0 50.3 25.2

300 100.0 50.0 25.0

298 99.5 49.7 24.9

297 98.9 49.4 24.7

295 98.3 49.2 24.6

293 97.7 48.9 24.4

292 97.2 48.6 24.3

290 96.6 48.3 24.2

288 96.1 48.0 24.0

286 95.5 47.7 23.9

285 95.0 47.5 23.7

283 94.4 47.2 23.6

282 93.9 46.9 23.5

280 93.3 46.7 23.3

278 92.8 46.4 23.2

277 92.3 46.1 23.1

275 91.7 45.9 22.9

274 91.2 45.6 22.8

272 90.7 45.4 22.7

271 90.2 45.1 22.6

269 89.7 44.9 22.4

268 89.2 44.6 22.3

266 88.7 44.5 22.2

265 88.2 44.1 22.1

263 87.7 43.9 21.9

262 87.2 43.6 21.8.

260 86.8 43.4 21.7

259 86.3 43.4 21.6

257 85.8 42.9 21.5

256 85.3 42.7 21.3

255 84.9 42.4 21.2

253 84.4 42.2 21.1

252 84.0 42.0 21.0

250 83.5 41.7 20.9

249 83.0 41.5 20.8

248 82.6 41.3 20.6

3.86

3.87

3.88

3.89

3.90

3.91

3.92

3.93

3.94

3.95

3.96

3.97

3.98

3.99

4.00

4.01

4.02

4.03

4.04

4.05

4.06

4.07

4.08

4.09

4.10

4.11

4.12

4.13

4.14

4.15

4.16

4.17

4.18

4.19

4.20

4.21

4.22

4.23

.4.24

4.25

4.26

4.27

4.28

4.29

4.30

246 82.1 41.1 20.5

245 81.7 40.9 20.4

244 81.3 40.6 20.3

242 80.8 40.4 20.2

241 80.4 40.2 20.1

240 80.0 40.0 20.0

239 79.6 39.8 19.9

237 79.1 39.6 19.8

236 78.7 39.4 19.7

235 78.3 39.1 19.6

234 77.9 38.9 19.5

232 77.5 38.7 19.4

233 77.1 38.5 19.3

230 76.7 38.3 19.2

229 76.3 38.1 19.1

228 75.9 37.9 19.0

226 75.5 37.7 18.9

225 75.1 37.5 18.8

224 74.7 37.3 18.7

223 74.3 37.1 18.6

222 73.9 .37.0 18.5

221 73.5 36.8 18.4

219 73.2 36.6 18.3

218 72.8. 36.4 18.2

217 72.4. 36.2 18.1

216 72.0 36.0 18.0

215 71.7 35.8 17.9

214 71.3 35.7 17.8

213 71.0 35.5 17.7

212 70.6 35.3 17.6

211 70.2 35.1 17.6

210 69.9 34.9 17.5

209 69.5 34.8 17.4

208 69.2 34.6 17.3

207 68.6 34.4 17.2

205 68.5 34.2 17.1

204 68.2 34.1 17.0

203 67.8 33.9 17.0

202 67.5 33.7 16.9

201 67.1 33.6 16.8

200 66.8 33.4 16.7

199 66.5 33.2 16.6

198 66.2 33.1 16.6

198 65.8 32.9 16.5

197 65.5 32.8 16.4




TABLE TO FIND BHN


‘d’ LOAD IN kg

‘d’ LOAD IN kg

3000 1000 500 250 3000 1000 500 250

4.31

4.32

4.33

4.34

4.35

4.36

4.37

4.38

4.39

4.40

4.41

4.42

4.43

4.44

4.45

4.46

4.47

4.48

4.49

4.50

4.51

4.52

4.53

4.54

4.55

4.56

4.57

4.58

4.59

4.60

4.61

4.62

4.63

4.64

4.65

4.66

4.67

4.68

4.69

4.70

4.71

4.72

4.73

4.74

4.75

196 65.2 32.6 16.3

195 64.9 32.4 16.2

194 64.6 32.3 16.1

193 64.2 32.1 16.1

192 63.9 32.0 16.0

191 63.6 31.8 15.9

190 63.3 31.7 15.8

189 63.0 31.5 15.8

188 62.7 31.4 15.7

187 62.4 31.2 15.6

186 62.2 31.1 15.6

185 61.8 30.9 15.5

185 61.5 30.8 15.4

184 61.2 30.6 15.3

183 60.9 30.5 15.2

182 60.6 30.3 15.2

181 60.4 30.2 15.1

180 60.1 30.0 15.0

179 59.8 29.9 14.9

178 59.5 29.8 14.8

178 59.2 29.6 14.8

177 59.0 29.5 14.7

176 58.7 29.3 14.7

175 58.4 29.2 14.6

174 58.1 29.1 14.5

174 57.9 28.9 14.5

173 57.6 28.8 14.4

172 57.3 28.7 14.3

171 57.1 28.5 14.3

170 56.8 28.4 14.2

170 56.5 28.3 14.1

169 56.3 28.1 14.1

168 56.0 28.0 14.0

167 55.8 27.9 13.9

167 55.5 27.8 13.9

166 55.2 27.6 13.8

165 55.0 27.5 13.8

164 54.8 27.4 13.7

164 54.5 27.3 13.6

163 54.3 27.1 13.6

162 54.0 27.0 13.5

161 53.8 26.9 13.4

161 53.5 26.6 13.4

160 53.3 26.6 13.3

159 53.0 26.5 13.3

4.76

4.77

4.78

4.79

4.80

4.81

4.82

4.83

4.84

4.85

4.86

4.87

4.88

4.89

4.90

4.91

4.92

4.93

4.94

4.95

4.96

4.97

4.98

4.99

5.00

5.01

5.02

5.03

5.04

5.05

5.06

5.07

5.08

5.09

5.10

5.11

5.12

5.13

5.14

5.15

5.16

5.17

5.18

5.19

5.20

158 52.8 26.4 13.2

158 52.6 26.3 13.1

157 52.3 26.2 13.1

156 52.1 26.1 13.0

156 51.9 25.9 13.0

155 51.6 25.8 12.9

154 51.4 25.7 12.9

154 51.2 25.6 12.8

153 51.0 25.5 12.7

152 50.7 25.4 12.7

152 50.5 25.3 12.6

151 50.3 25.1 12.6

150 50.1 25.0 12.5

150 49.8 24.9 12.5

149 49.6 24.8 12.4

148 49.4 24.7 12.4

148 49.2 24.6 12.3

147 49.0 24.5 12.2

146 48.8 24.4 12.2

146 48.6 24.3 12.1

145 48.4 24.2 12.1

144 48.1 24.1 12.0

144 47.9 24.0 12.0

143 47.7 23.9 11.9

143 47.5 23.8 11.9

142 47.3 23.7 11.8

141 47.1 23.6 11.8

141 46.9 23.5 11.7

140 46.7 23.4 11.7

140 46.5 23.3 11.6

139 46.3 23.2 11.6

138 46.1 23.1 11.5

138 45.9 23.0 11.5

137 45.7 22.9 11.4

137 45.5 22.8 11.4

136 45.3 22.7 11.3

135 45.1 22.6 11.3

135 45.0 22.5 11.2

134 44.8 22.4 11.2

134 44.6 22.3 11.1

133 44.4 22.2 11.1

133 44.2 22.1 11.1

132 44.0 22.0 11.0

132 43.8 21.9 11.0

131 43.7 21.8 10.9




Annexture ‘A’ Procedure For Checking Hardness Of Round Specimen 1. Remove lower support plate (90) from support bars (89) 2. Remove flat test table and place ‘V’ table on the extension of the main screw. 3. Place the round specimen on the ‘V’ table. The surface of the round specimen should

be clean and free from scales. It should be polished enough to reflect the beam of light source.

4. Adjust the height of the main screw such that surface of the specimen, viewed on the screen, is maximum clear.

5. Take the impression as per the procedure for flat specimen (refer 6.1) 6. Impression of the specimen may be oval shaped and as such measure the diam eters

of the impression along X-axis (horizontal) and along Y-axis (vertical). (refer 6.3)

7. Take mean of the two diameters and by referring the enclosed charts, determine the Brinell Hardness Number of the specimen.

8. For Production testing of indentical components of same diameter, it is advisable that the position of the main screw, once set, should not be disturbed for subsequent tests. Only the test sample should be just removed and another one to be inserted.

Annexture ‘B’ Procedure For Changing Illuminator Bulb/Condenser Lamp 1. Unscrew the Bulb holder which is fixed to the condenser tube (44) . 2. Take back the build holder from the condenser tube. For this procedure use the left

side window provided to the main body. 3. Unscrew bulb from the bulb holder and place a new 12 V, 80 watt bulb on the holder. 4. Tighten the new bulb to the bulb holder. 5. Place the bulb holder in the condenser tube such that the filament will be horizontal. 6. Loosen the check nut of the condenser lens (45) and adjust the condenser lens and

bulb such that bright spot light will be focussed on the mirror (52). This can be checked by placing small piece of white paper on the hole provided on the mirror tube (51).

7. At this position tighten the screws of the bulb holder and also check nut of the condenser lens. 8. If focussing is not possible by above method, then change slightly the position of the condenser tube. For this purpose first loosen the condenser tube clamping screw. Then move the condenser tube by adjusting condenser tube leveling screws, adjust the focus and then tighten the condenser tube clamping screws.

bms 3000-ob · 2019. 3. 16. · bms 3000-ob ... screw (05) is located at the centre of the main...

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