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Shore® Durometers

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An Instron Company

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Table of Contents

S1 Digital Durometers

Pages 5 - 6

Type M Systems

Page 14

IRHD Durometers and Stands

Page 15

Durocalibrators

Page 16

Test Blocks and Kits

Page 17

Resiliometers

Page 18

Testing Tips

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Calibration and Repair Services

Page 19

Round Style Durometers

Page 7

Quadrant Style Durometers

Page 8

Pencil Durometers

Page 9

Manual Stands for Round and Digital Durometers

Pages 10 - 11

Automatic Operating Stands

Pages 12 - 13

Durometer Scale Selection Guide

Page 4


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For hardness testing of elastomers and plastics,Shore® durometers are ideal. Shoredurometers conform to all ASTM andinternational standards and are easy-to-use.This brochure contains durometers anddurometer systems that cover the entirespectrum of indentation hardness testing ofrubber-like materials. Each durometer type is made to a specific scale (i.e. A,B,C,D) and is capable of producing a value between 0 and 100. For M scale testing, Shoremanufactures the micro system, which isdesigned to determine the hardness of softelastomers too thin or too irregularly shaped,such as small o-rings, for measurement withmacro durometers.

All durometers except for the M scale units canbe used as a portable device. Test stands arerecommended for best accuracy and arerequired for M scale testing due to its increased sensitivity.

Shore Test Method

The Shore test uses a hardened indenter, anaccurately calibrated spring, a depth indicator,and a flat presser foot. The indenter protrudesfrom the middle of the presser foot and extends2.5 mm from the surface of the foot. In thefully extended position the indicator displayszero. When the indenter is depressed flat evenwith the presser foot's surface, the indicatordisplays 100. Therefore, every Shore point isequal to 0.0025 mm penetration (M scale is0.00125 mm).

To perform a test, the unit is placed on thesample so that the presser foot is held firmlyagainst the test surface. The spring pushes theindenter into the sample and the indicatordisplays the depth of penetration. The deeperthe indentation, the softer the material and thelower the indicator reading.

The Shore A and D scales are by far the mostcommonly used. The M scale uses a very lowforce spring and was developed to allow testingvery small parts like o-rings that cannot betested in the normal A scale. Because differentmaterials respond to the test scales in differentways, there is no correlation between thedifferent scales.

Shore test methods are defined in the following standards:h ASTM D 2240 h DIN 53 505 h ISO 7619 Part 1 h JIS K 6253h ASKER C-SRIS-0101* (now obsolete)

*Please consult factory for availability of Shoredurometer for ASKER C testing.

Application

If you are not sure which durometer is right foryour testing requirement, please contact usand we will gladly assist with your selection. Shore Instruments has been manufacturingdurometers and solving customers' rubberhardness testing issues for 75 years. You canspeak with one of our Shore Instruments’representatives for testing advice to addresschallenges resulting from the latest advancesin industry and technology.

Calibration

A NVLAP® accredited calibration certificate isincluded with every new durometer. Annualrecalibrations are recommended. Shore offers a full line of calibration and repairservices. Please refer to the calibration sectionon page 19 for complete details.

Introduction

Indenter geometry

Shore S1 portable digital durometer and various rubber specimens

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Scale ofDurometer

Material To Be UsedCatalog Number

Conforms To Model MaximumForce

Indenter

A Rubber: soft vulcanized (ie tire), natural nitrile.Elastomeric Materials (rubber and rubber-like):GR-S, GR-1, neopene, thiokol, flexible polyacrylicesters. Other: wax, felt, leather, etc. (materials thatnormally yield under fingernail pressure such as theheel on your shoe).

9130-0219130-030407030000407040000407041000407141100407041200407041300407041400407010000407020000407000000

ASTM D 2240JISK 6301ASTM D 2240ASTM D 2240ASTM D 2240ASTM D 2240ASTM D 2240ASTM D 2240ASTM D 2240

–––

S1-AS1-AXAXAMXXACLXACLMXXATHXAHAFXAMXHAFQAQAMXPA

821 g821 g821 g821 g821 g821 g821 g821 g821 g821 g821 g821 g

Frustum cone

B Rubber: moderately hard (ie typewriter rollers,platens, etc.).

9130-022407030100407041500407010100407020100

ASTM D 2240ASTM D 2240ASTM D 2240

––

S1-BXBXBHAFQBQBMX

821 g821 g821 g821 g821 g

Sharp 30° angle

C Rubber: medium hard Plastics: medium hard

9130-0239130-031407030200407040200407042000

ASTM D 2240JISK 6301ASTM D 2240ASTM D 2240ASTM D 2240

S1-CS1-CXCXCMX XCHAF

4533 g 4533 g 4533 g 4533 g 4533 g

Frustum cone

D Rubber, Hard Plastics: harder grades such as rigidthermoplastics, plexiglas, thermopolystyrene, vinyl,sheet, cellulode acetate, thermosetting laminates (ieformica) Other: paper-filled calendar rolls, calendarbowls, etc. (materials that would not normally indentunder fingernail pressure, such as a pocket comb).

9130-024407030300407040300407041900407042000

ASTM D 2240DIN 53505ASTM D 2240ASTM D 2240ASTM D 2240

S1-DXDXDMXXDHAFXDMXHAF

4533 g 4533 g 4533 g 4533 g 4533 g

Sharp 30° angle

DO Textile Windings: very dense, slasher beams, etc.

9130-025407030400407040400407042100

ASTM D 2240ASTM D 2240ASTM D 2240ASTM D 2240

S1-DOXDOXDOMXXDOHAF

4533 g 4533 g 4533 g 4533 g

0.0468 radius

E Soft rubber, sponges and foams 9130-0579130-0589130-059


XEXEMXXETH

821 g821 g821 g

0.0980 radius

O Rubber: soft (ie soft printer rolls, artgum)Textile Windings: medium density (ie rayon, orlon, nylon)

9130-0269130-006407030500407040500407042300407020500

ASTM D 2240ASTM D 2240ASTM D 2240ASTM D 2240ASTM D 2240

–

S1-ODTOXOXOMXXOHAFQOMX

821 g821 g821 g821 g821 g821 g

0.0468 radius

OO Textile Windings: low density Other: sponge rubber and plastics (not for use on foamed latex)

9130-027407030600407042500407020500


–

S1-OOXOOXOOHAF QOO

113 g113 g113 g113 g

0.0468 radius

OOO Plastic Foams: suit foams, open or closed cells 9130-060 ASTM D 2240 X000 113 g 0.25 radius

OOO-S Plastic Foams: suit foams, open or closed cells 407030800 ASTM D 2240 X000-S 197 g 0.420 radius

TTextile Windings: medium density (on spools and bobbins with a maximum diameter of 101.6 mm (4 in)) Note: all XT's have a concave bottom plate tofacilitate centering on round specimens

407030700407010700407020700

–––

XTQTQTMX

821 g821 g821 g

3/32 in sphere

M Rubber: o-rings and thin sheet min 1.25 mm (0.05 in) thick. Complete with stand.

407170000407140000

ASTM D 2240ASTM D 2240

717/ DIG714/ ALOG

78 g78 g

Sharp 30° angle

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Durometer Scale Selection Guide

Durometer Model Legend:SI = DigitalX = Round Style (1 pt increments)Q = Quadrant Style (5 pt increments)

P = Pencil (5 pt increments, vernier scale)CL = Constant LoadMX = Maximum Reading Hand

TH = Tolerance HandHAF = Half Inch Foot

The durometer selection guide will help you select the appropriate Shore hardnesstester for your application. The combinationof spring force and indenter geometry per ASTM D 2240-04 (as defined by

ASTM DIN 53505, ISO 7619-1 and ASTM D 2240) determines the type ofdurometer required for a particularapplication. There is not one type ofdurometer that can cover the entire hardness

spectrum. When selecting a durometer it isimportant to take the readings intoconsideration (readings below 10 or above 90are not considered reliable). In such cases thenext appropriate scale should be chosen.


Catalog Number Description Model

9130-021 Type A full unit - A probe and head unit S1 A

9130-024 Type D full unit - D probe and head unit S1 D

9130-032 Type M - micro system includes stand S1–719

S1 Digital Durometer

The Shore® model S1 portable digitaldurometer is a handheld hardness testerespecially designed for rubber and otherelastomeric materials. The instrument ishoused in black polypropylene that is shapedto fit comfortably in the hand. The tester has acalibrated spring to create a known load onthe indenter. Hardness is measured bydetermining the depth of penetration of theindenter, relative to the presser foot, into thematerial being tested. The measurementdisplays on a high-contrast LCD, which alsodisplays test parameters, set-up, testerfunctions, specimen and sample information.

The user-friendly design features a six-buttoncontrol panel, sound transducer, RS232 serialport, statistical capabilities, and memory forup to 256 test results.

Principle of Operation

The tester unit has a detachable probe thatcontains an indenter and calibrated springsuitable for the various durometer scales. Theprobe also contains circuitry that lets the maindurometer unit automatically recognize it.This gives the operator the ability tointerchange probes for different durometerscales using one durometer head. The probe is factory calibrated and does not needany further calibration upon delivery.

Features

h High contrast LCD display with backlighting and large, easy-to-read numbers

h Test counter automatically counts the number of tests and number of parts

h Ergonomically-designed

h Ability to quickly switch scales by changing precalibrated probes

h Statistics, including average or median result options, and minimum and maximum tolerance settings

h Automatic sleep mode for long battery life, low battery indicator

h Optional AC adapter available

h Meets or exceeds ASTM D 2240, DIN 53505, JIS K 6253

h Fits all existing Shore stands with optional base and cable adapter(Excluding Type M).

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S1 durometer with optional base and cable adapter

S1 durometer carrying cased

Note: Includes digital display and probe ready-to-use

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Why Modular Design?Modular design allows for quick scale changes, just snap in one of ten precalibrated probes.

S1 Durometers


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S1 Digital Durometer Specifications

Catalog Number Description

9130-035 SI digital display unit, accepts all probes

9130-121 Type A - probe only

9130-122 Type B - probe only

9130-123 Type C - probe only

9130-124 Type D - probe only

9130-125 Type DO - probe only

9130-126 Type O - probe only

9130-127 Type OO - probe only

9130-130 Type A JIS - probe only

9130-131 Type C JIS - probe only

Catalog Number Description

9130-036 Base/ cable adapt - For use with stands or for handheld probe testing

9130-037 120 VAC adapt

9130-038 220 VAC adapt

9130-150 Micro-printer - (110 VAC ) includes cable

9130-151 Micro-printer - (220 VAC ) includes cable

9130-152 Computer interface cable (RS 232), S1 to PC

9130-039 Plastic carrying case, holds SI, three additional probes, blocks

9130-153 S1 902 operating stand interface cable (existing stands only), S1 to stand

9139-154 S1 902 operating stand to computer cable (existing stands only)

9100-500 Data collection software

9130-370 Retrofit existing Type M system to S1 style (includes S1)

S1 durometer mounted in the 902 automatic stand

Modular Units Order Any Display and Probe Combination

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Scale Types A, B, C, D, DO, O, OO, M, JIS (A and C)

Overall Dimensions 203 mm x 76 mm x 38 mm(8 in x 3 in x 1.5 in)

Weight 0.45 kg (1 lb)

Dwell Time Variable 1 to 25 seconds

Temperature (Operating) +10 °C to +38 °C (+50 °F to +100 °F)

Humidity (Operating, Storage) 10% to 90% noncondensing

Power Requirements 4-AAA batteries

Display Resolution 0.1

Memory 256 test results: 16 tests in each of 16 parts

Data Output RS-232C, adjustable; computer or printer

Testing Standards Meets or exceeds ASTM D 2240, DIN 53505, JIS K 6301

Specifications

S1 Optional Accessories


The Shore® round style durometer wasintroduced in 1944. It is a general purpose device that is the most widely used instrument for the hardness testing of cellular, soft and hard rubber-like and plastic material.

It is small enough to be carried in the pocketand rugged enough to operate in the mosthostile environments. The round styledurometer was designed to satisfy theindustries' needs for a unit with a scalegraduated in increments of one rather thanfive with a resolution of one durometer point.The analog durometer may be manuallyapplied or, for better repeatability and accuracy,mounted on an applicable operating stand.


Shore analog durometers employ a calibratedspring that generates a known preload on theindenter. The durometer measures hardnessby determining the depth of penetration intothe material under test. The dial is graduated from 0-100 with a pointer sweep of 265 degrees.

Features

h Rugged aluminum housing and movement frame, stainless steel precision compression main spring

h Indenter guard and a glass lens that resistsscratching and discoloration

h Vinyl covered steel carrying case with a test block is included

h NVLAP® accredited certificate of calibration

h Available Styles: standard, maximum hands, tolerance hands, half inch foot and constant load durometers

h Fits all existing Shore stands

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Round Style Durometers

Standard hands

Tolerance hands

Maximum hands

Constant loadHalf inch foot

Note: Applicable catalog numbers can be found on the Durometer Scale Selection Guide on page 4

Model Standard, Maximum and Tolerance Hand Durometers

Constant Load Durometers Half inch foot Durometers

Scale Types All All All

Display Body Diameter 67.3 mm(2.65 in)

67.3 mm(2.65 in)

67.3 mm(2.65 in)

Display Body Thickness 28.4 mm(1.12 in)

28.4 mm(1.12 in)

28.4 mm(1.12 in)

Overall Length 86.9 mm(3.42 in)

90.2 mm(3.55 in)

97 mm(3.82 in)

Presser Foot Dimension 35 mm x 19 mm(1.4 in x 0.75 in)

51 mm x 51 mm(2 in x 2 in)

12.77 mm(0.5 in)

Weight 220 g(0.5 lb)

1080 g(2.4 lb)

220 g(0.5 lb)

Specifications

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What is the difference between OOO or OOO-S?There are currently two types of OOO durometers thatcomply with ASTM D 2240 now recognized in the industry.In 2003, ASTM D 2240-03 designated the most widely usedShore Instruments version, as the OOO-S in order todifferentiate Shore from OOO scale durometersmanufactured by other suppliers. The two distinct OOOunits differ in indenter geometry and extension as well as spring force calibration. ASTM D 2240-03 recognizesboth variations of the OOO and refers to the OOO-S as aShore Instruments manufactured device.


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Quadrant Style Durometers

Model Quadrant Style

Scale Types A, B, O, OO, T

Display Body Thickness 21.9 mm (0.861 in)

Presser Foot Dimension 49 mm x 19 mm (1.93 in x 0.75 in)

Weight 130 g (0.3 lb)

Quadrant durometers, introduced in 1915,were the original durometer in the Shore line. The quadrant is ideal for manualapplications through its small, lightweight,and rugged design. The dial is graduatedfrom 0-100 in 5-point increments with apointer sweep of 74 degrees. The quadrantdurometer is suitable for hardness testing of cellular, soft and hard rubber and plastic materials.


Shore® quadrant durometers are handheldhardness testers specifically designed forrubber and other elastomeric materials. Thedurometers have a calibrated spring thatgenerates a known preload on the indenterand measures hardness by determining the depth of penetration into the materialunder test.

Features

h Rugged housing, indenter guard, precision bronze main spring and an acrylic dial face

h Can be used in any position

h Vinyl covered steel carrying case and test block

h Certificate of calibration

h Available styles: standard or maximum hands

h Fits all existing Shore stands

Specifications

Standard

Maximum hands

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What is the Minimum Thickness of a Test Specimen?A test specimen should have a minimum thickness of0.24 in (6 mm) unless it is known that identical resultsare obtained on thinner specimen. Thinner specimensmay be plied to the minimum thickness to obtainindicative readings, provided consistent and repeatableresults can be obtained.


The pencil durometer's small, lightweight,and rugged design make it ideal for carryingin the pocket. It has an easy-to-read vernierscale graduated in increments of 5-points withinterpolation to 2-points possible. Ideal Go/ No-Go gauge for field testing


The vernier push rod is held in placemagnetically to hold the reading when theinstrument is removed from the specimen.The pencil durometer is capable of maximumreadings only.

The Shore® pencil durometer eliminates theuse of gears, cams, dials, dial hands andcrystals, thus minimizing the necessity ofrecalibration due to strenuous use.

Features

h Satin hard chrome and anodized finish

h Polished stainless steel presser foot

h Teflon bushing on the indenter shaft

h Precision stainless steel mainspring

h Can be used in any position

h Hardness readings can be made in 'blind' locations where the vernier scale is not visible

h Certificate of calibration

h Supplied boxed with a sheath and cleaning brush

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Pencil Durometer

Model PA

Scale Type A

Catalog Number 407000000

Scale Range 0 to 100

Scale Resolution (Points) 5

Presser Foot Dimension 13 mm

Weight 47 kg (0.15 lb)

Effective Length 114 mm (4.5 in)

SpecificationsPencil durometer withthe cleaning brush and sheath

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Is Application Pressure Important?Application pressure of an analog durometer to the testspecimen is critical when reproducibility of readings isrequired. When the durometer is used as a handheld device,the recommended application pressure for Type A, B and O is 2 lbs to 3 lbs and 10 lbs to 12 lbs for Type C and Dinstruments. Better reproducibility will be obtained when thedurometer is mounted on an operating stand.


DR

DRCLd

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Shore® operating stands are used to improvethe accuracy and reproducibility of bothanalog and digital durometer hardness testerreadings by ensuring that the presser foot isexactly parallel to the specimen table. Anyanalog or digital durometer can be mountedon an applicable operating stand.

The operating stand is primarily intended foruse on a test specimen with parallel sides.Irregularly shaped objects may be tested in anest or a fixture to make the given surfaceparallel to the durometer presser foot.

ASTM D 2240 specifies three categories ofoperating stands: h Type 1 are basic, manual operating stands.h Type 2 are stands capable of controlling

the rate of descenth Type 3 are hydraulically, pneumatically or

electromechanical driven.

Shore manufactures stands that fall into all three categories. For assistance in selectingthe proper operating stand to fit yourdurometer, please refer to the Shore 'StandSelection Matrix' found on page 12.

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Manual Stands for Round and Digital Durometers

Model DR DRCL CV LR

Catalog Number 407110000 407110100 407120000 407130000

Compatible Durometer A, B, C, D, D0, 00, 000 A, B, O A, B, O 00 (no weight); A, B, 0, T(small weight); C, D, D0(small and large weight)

Throat Depth 57 mm (2.25 in) 57 mm (2.25 in) 57 mm (2.25 in) 76 mm (3 in)

Throat Height 152 mm (6 in) 152 mm (6 in) 114 mm (4.5 in) 165 mm (6.5 in)

Table Dimensions 53 mm x 80 mm (2 in x 3 in)

53 mm x 80 mm (2 in x 3 in)

97 mm x 60 mm (3.8 in x 2.4 in)

153 mm(6 in)

Weight 5.45 kg (12 lb) 6.35 kg (14 lb) 8.2 kg (18 lb) 6.8 kg (15 lb)

Minimum Specimen Thickness Per ASTM D 2240 Per ASTM D 2240 Per ASTM D 2240 Per ASTM D 2240

Load Application Velocity – –5.49 mm/s to 5.95 mm/s (0.216 in/sto 0.234 in/s)

–

Damping Oil – – Mobile DTE24 light or equivalent

–

ASTM Type 2 2 3 1

Specifications



The DR and DRCL (DR constant load) standsprovide a stable mounting and test fixture foreither analog or digital durometers. Bothmodels allow you to adjust specimen table anddurometer heights. When a durometer ismounted and properly aligned, thedurometer's presser foot is exactly parallel tothe specimen table on the stand, ensuringaccurate and repeatable readings. The DRstand requires that you manually lower thedurometer and then apply appropriatepressure to the specimen. In contrast, theDRCL stand provides a loading weight ofknown value for this purpose.

Variation in the velocity of durometerapplication is a common cause of differencesin hardness readings. For example, whentesting materials with high creep properties,false readings may be obtained if thedurometer is improperly or rapidly applied to the surface. The CV conveloader features a constant load weight and a hydrauliccylinder that automatically controls theapplication velocity of the durometer. Whenyou release the pawl lever, the weight drivesthe durometer downward at a steady rate,controlled by the calibrated hydraulic dashpot.The durometer contacts the specimen at aconstant speed and force, ensuring repeatableand accurate test results.

The LR leverloader features a constant loadweight for highly accurate and reproduciblehardness readings. To operate, the lever isdepressed to raise the specimen to thedurometer, which in turn lifts a constant loadweight seated on a shaft above the instrument.The mass of the durometer and instrumentshaft assembly, in combination with the smallweight, produces the mass necessary for TypesA, B, and O durometers. The addition of thelarge weight produces the mass necessary forTypes C, D and DO durometers. Thedurometer and instrument shaft assemblyproduces sufficient mass for testing with Type OO durometers.

Features

h Cast iron and stainless steel construction (DR, DRCL, CV)

h Cast iron, cast aluminum and stainless steel construction (LR)

h Precision rack and pinion instrument height control (DR, DRCL, CV)

h Precision machined bronze bearings on moving parts (LR)

h Separate pinion block and table height adjustment (DR, DRCL, CV)

h Small and large weights (LR)

h Leveling block (LR)

h Vinyl dust cover

h The durometer is not included

1 1

Leverloader (LR)d


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Automatic Operating Stands

S1 durometer mounted on a902 automatic stand

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S1 = Digital durometers X= Round style durometers

Stand Selection Matrix

Shore® 900 and 902 automatic operatingstands are Type 3 stands, as described inASTM D 2240. The key advantage ofautomatic stands is their ability to performhands-off high volume testing between 300 to 400 cycles per hour.

For assistance in selecting the properoperating stand to fit your durometer, pleaserefer to the Shore 'Stand Selection Matrix'found at the bottom of this page.


Automatic operating stands provide bothconstant load and application velocity,through a gear-driven electric motor andbraking mechanism that alternately lowersthe durometer onto the specimen and thenraises it in preparation for the next testingcycle. This automatic return ensures thatevery test has the same starting point.

Electronic controls are used to adjust theamount of time the durometer remains in the raised or lowered position, allowing time for the changeout of specimens and therecording of readings.

The Shore 900 automatic stand is designedprimarily for analog durometers. The 900stand has a built-in timer, independent of thedurometer, that allows for automatic cycling.

The Shore 902 automatic stand is designedprimarily for a digital durometer. The standreceives dwell times directly from the digitaldurometer and also has the ability tocommunicate with a computer.


Model 900 900 (220 V) 902 902 (220 V) S1 902 S1 902 (220 V)

Catalog Number 9130-240 9130-241 9130-242 9130-243 9130-244 9130-245

CompatibleDurometer

No weight: A, BLarge weight: C, Dand D0

No weight: A, BLarge weight: C, Dand D0

A, B, C, D, D0, 0 A, B, C, D, D0, 0 A, B, C, D, D0, 0 A, B, C, D, D0, 0

TableDimensions

152 mm x 128 mm (6 in x 5 in)

152 mm x 128 mm(6 in x 5 in)

152 mm x 128 mm(6 in x 5 in)

152 mm x 128 mm(6 in x 5 in)

152 mm x 128 mm(6 in x 5 in)

152 mm x 128 mm(6 in x 5 in)

OverallDimensions

266 mm x 152 mm x355 mm (10.5 in x 6 in x 14 in)



266 mm x 152 mmx 355 mm (10.5 inx 6 in x 14 in)



Throat Depth 83 mm (3.25 in) 83 mm (3.25 in) 83 mm (3.25 in) 83 mm (3.25 in) 83 mm (3.25 in) 83 mm (3.25 in)

Throat Height 79 mm (3 in) 79 mm (3 in) 79 mm (3 in) 79 mm (3 in) 79 mm (3 in) 79 mm (3 in)

Weight 15 g (33 lb) 15 g (33 lb) 15.9 g (35 lb) 15.9 g (35 lb) 15.9 g (35 lb) 15.9 g (35 lb)

Maximum SpecimenThickness

70 mm(2.75 in)

70 mm(2.75 in)

70 mm(2.75 in)

70 mm(2.75 in)

19 mm(0.75 in)

19 mm(0.75 in)

Down Dwell (1.8 s to 10 s) (1.8 s to 10 s) – – – –

Up Dwell (1.8 s to 180 s) (1.8 s to 180 s) – – – –

PowerRequirements

120 V a.c., 60 Hz, 230 V a.c., 50 Hz 120 V, 60 Hz 230 V, 50 Hz 120 V, 60 Hz 230 V, 50 Hz

1 3

Features

h Precision-machined aluminum construction

h Cast jig plate base

h Precision ground indenter shafts

h Linear bearings for friction-free travel

h Large weight (Model 900)

h Large weight for Type C, D and DO (Model 902)

h Vinyl dust cover

h The durometer is not included

Specifications

Round style XA durometer mounted on a 902 automatic stand

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Type M Systems

Micro-o-ring Type M durometer systemsproduce accurate, repeatable hardnessreadings on soft elastomers too thin or tooirregular in shape, such as small o-rings, for measurement with a standard durometer.Used on specimens with cross sections as thin as 1.25 mm (0.05 in) and up to 7 mm (0.275 in). The sensitivity of the M scale requires the use of a stand.

Shore® Micro-o-ring test systems conform to ASTM D 2240 for Type M (micro hardness durometer).


The hardness values given by this instrumentdiffer from those produced by a Type Adurometer. Due to the light load applied tothe indenter, testing with this instrument willnot indicate the cold flow or creepcharacteristics of the material you test. Onlyminimal application pressure is required toattain full-scale readings. This allows the userthe ability of testing production pieces ratherthan test slabs, which may not reflect theactual hardness values of the finished product.

Features

h Unique system of o-ring fixtures with interchangeable inserts tailored to accommodate standard cross sectional diameters from 1.78 mm to 6.99 mm (0.070 in to 0.275 in)

h Flat inserts for testing of flat andirregular shapes

h Custom-made inserts are available

h Rubber test block kit to monitor the performance of the unit

h Model 714/ 719: Stainless steel and cast iron construction, precision rack, pinion, and hydraulic dash pot, adjustable table height

h Hydraulic dashpot controls velocity and ensures precision application of the test load to the surface of the specimen

h Vinyl dust cover

Model 714 Analog S1 719 Digital

Catalog Number 407140000 9130-032

Scale Range 0 to 100 0 to 100

Scale Resolution (Points) 1 0.1

Hardness Range 10 to 90 20 to 90

Descent Rate 3.2 mm/s (0.0125 in/s) 3.2 mm/s (0.0125 in/s)

Indenter Extension 1.25 mm (0.049 in) 1.25 ±0.02 mm (0.049 ±0.001 in)

Indenter Type Sharp 30° angle Sharp 30° angle

Indenter Diameter 0.8 mm (0.03 in) 0.8 mm (0.03 in)

Maximum Spring Force 78 g 78 g

Throat Depth 22 mm (0.87 in) 1.27 mm (1 in)

Throat Height 32 mm (1.25 in) 1.27 mm (1 in)

Table Dimensions 95 mm x 55 mm(3.25 in x 2 in)

95 mm x 55 mm(3.25 in x 2 in)

Testing Standards ASTM D 2240 ASTM D 2240

Power Requirements – –

Weight 7.7 kg (17 lb) 5.9 kg (13 lb)

Specifications

Model 714 analog micro-o-ring systemd


The International Rubber Hardness Degrees(IRHD) test was developed in Europe severalyears ago as an alternative to the Shore test. It is intended to provide an indication of theelastic modulus of the material being tested.Using a scale of 0 to 100, a reading of zerorepresents a material with zero elasticmodulus and a reading of 100 represents amaterial with infinite elastic modulus. Acurve is provided in the ASTM standard todefine the intermediate values. One IRHDpoint is equal to 0.04 mm penetration.


The Shore IRHD test is similar to a Rockwell®

test in that two test forces are used to measurethe depth of penetration. The indenters aresteel balls; IRHD units are not portable and can only be used in a stand designed for the test.

IRHD testing is covered by test methods ASTM D 1415 and ISO S 48, method N. Testspecimens are generally in the range of 8 mmto 10 mm, but should not be less than 4 mmin thickness.

Features

h The DuroTronic 2000 IRHD transducer senses indenter position using a LVDT and solid state electronic circuitry. The black anodized aluminum case, fitted with linearbearings and an indenter shaft provides electronic and mechanical stability necessary for full scale accuracy of ±0.3%.

h The DuroTronic 2000 IRHD transducer controls the 903 stand timed operation. It displays, stores and automatically averages hardness readings.

h Model 903 Automatic Operating Stand: Aluminum frame and cast jig plate, ground shafts and four linear bearings provide friction-free carriage movement

h Model 770 Manual Operating Stand: Cast iron and stainless steel construction, precision rack and pinion instrument height control, separate pinion block and table height adjustment

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IRHD Durometers and Stands

Model Durotronic 2000 (110 V) Durotronic 2000 (220 V)

Catalog Number 9130-010 9130-020

Scale Range 0 to 100 0 to 100

Scale Resolution (Points) 0.1 0.1

Presser Foot Dimension Outside 20 ±0.01 Inside 6 ±1 mm Outside 20 ±0.01 Inside 6 ±1 mm

Indenter Extension 3.2 mm/s (0.0125 in/s) 3.2 mm/s (0.0125 in/s)

Indenter Extension 2.50 ±0.10 mm 2.50 ±0.10 mm

Minor force 0.29 ±0.2 N 0.29 ±0.2 N

Major force 5.4 ±0.01 N 5.4 ±0.01 N

Time Minor Load 5.0 ±0.1 sec 5.0 ±0.1 sec

Time Major Load 1.99 adjustable sec 1.99 adjustable sec

Testing Standards ASTM D 1415 (ISO S 48, method N)DIN 53519, part normal

ASTM D 1415 (ISO S 48, method N)DIN 53519, part normal

Power Requirements 120 V, 60 Hz or 230 V, 50 Hz 120 V, 60 Hz or 230 V, 50 Hz

IRHD Durometer Specifications

Model 770 903 (110V) 903 (220V)

Catalog Number 407700000 9130-260 9130-261

Throat Depth 54 mm (2.125 in) 76 mm (3 in) 76 mm (3 in)

Throat Height 64 mm (2.5 in) 79 mm (3.1 in) 79 mm (3.1 in)

Table Dimensions 83 mm (3.27 in) 152 mm x 128 mm(6 in x 5 in)

152 mm x 128 mm(6 in x 5 in)

Force Application Manual Automatic Automatic

IRHD Stand Specifications

Model 903 automatic IRHD systemd


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Durocalibrators

The durocalibrator is a precision devicedesigned to verify the proper spring loads for durometers in accordance withASTM D 2240 guidelines. The durocalibratorprovides assurance that instrument force anddisplacement measurements are withinrequired specifications. The Shore®

durocalibrator is available in three models foruse on all durometer scales (except OO).

The Model SD-1A is used for Types A, B, Oand T. The SD-1D is for Types C, D and DOdurometers; and the SD-1AD is for all Shoredurometers (except Type OO).

With the durocalibrator, a durometerverification can be performed with greaterprecision than standard rubber test blocks,thereby providing a quick and accurateassessment of your durometer's performanceand calibration status. The durocalibratorcan eliminate costly production errors byquickly identifying out of tolerance conditions.


The Shore durocalibrator exceeds the precision requirements mandated by ASTM specs. ASTM requires that 822 g mainspring durometers have atolerance of ±8.2 g at every 10-pointincrement and that 4550 g mainspringdurometers have a tolerance of ±45 g forevery 10-point increment. The Shoredurocalibrator delivers ±2 g for 822 gmainspring and ±5 g for 4550 g mainspring durometers.

The heart of the system is the beam andsliding weight. The beam is hard chrome-plated to resist wear to the detentpoints and knife-edge; and the sliding weights have hardened detent pins which are also wear resistant.

Shore Instruments recommends thatindependent service and calibration isperformed on an annual basis at a minimumand more often if your instrument is usedfrequently. Shore offers NVLAP® accreditedservice and calibration options and utilizes the most advanced calibration equipment inthe industry.

Features

h Special tool kits for Shore round and quadrant durometers

h Set of weights appropriate to each model

h NVLAP accredited certificate of calibration

h Vinyl dust cover

h Durometer not included

h It is recommended that the durocalibrator be sent to Shore Instruments for recalibration.

Durocalibrator with weights and tool kitsd

Model SD-1A SD-1D S1-1 A/D

Catalog Number 407310000 407310100 407310200

Overall Dimension 337 mm x 368 mm x 159 mm (13.25 in x 14.5 in x 6.25 in)

337 mm x 368 mm x 159 mm(13.25 in x 14.5 in x 6.25 in)

337 mm x 368 mm x 159 mm(13.25 in x 14.5 in x 6.25 in)

Weight 11.3 kg (25 lb) 11.3 kg (25 lb) 11.3 kg (25 lb)

Use with Scales A,B, O, T C, D, DO A, B, C, D, DO, T

Specifications


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Test blocks are used as a method of verifyingthe operational status of a durometer. Usingtest blocks as a monitoring tool indicates if adurometer is operating correctly. Test blocks,spring type or rubber, are not intended for useas a precision standard or calibration device.Durometer calibration can only beaccomplished by direct measurement of thespring force and display accuracy, using asystem of weights applying a force to thedurometer spring.


Prior to using a durometer, it is recommended that you verify that thedurometer is performing correctly bymeasuring the hardness of a rubber test block and then comparing it to the factorycalibration data included with the unit. The silicone material used in these test blocks is relatively stable; however, variations in readings will occur over time and calibration should be verified annually by the direct method.

The Shore® rubber test block kit consists ofseven color-coded silicone discs compoundedto yield Type A hardness values of averagedranges of 30, 40, 50, 60, 70, 80 and 90.

Test blocks are available for use with Shore A, M scale (ASTM D 2240) or IRHD (ASTM D 1415) scale durometers. Test blocksare calibrated using durometers that conformto ASTM D 2240.

Features

h The kits contain seven silicone discs:- 30, White- 40, Yellow- 50, Blue- 60, Green- 70, Red- 80, Brown- 90, Black

h IRHD kit conforms to ASTM D 1415

h Vinyl covered steel carrying case

h Certificate of Calibration

h Accuracy: ±2-points of actual stated readings

Test Blocks and Kits

Specifications

Rubber test block kitd

*For availability in other scale types, please consult the factory

Model Individual Test Blocks Metal Blocks (Type C and D) Kits (Type A, M, IHRD)

Scale Types A and M* C and D IHRD, A and B

Accuracy ±2-points of actual stated readings

±2-points of actual stated readings

±2-points of actual stated readings

Diameter 49 mm (1.9 in) – –

Depth 9.6 mm (.4 in) – –

Overall Dimension –47 mm x 16 mm x 9 mm(1.8 in x .6 in x .4 in)

279 mm x 127 mm x 32 mm(11 in x 5 in x 1.25 in)

Weight 24 g (0.05 lb) 21 g (0.04 lb) 708 g (1.6 lb)

Can I Order Rubber Test Blocks Online?Yes! In fact, all Shore products are available for online purchase. Visit us at www.shoreinstruments.com


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Resiliometers

The Shore® resiliometer measures resilience ofelastomers by dropping a plunger ofcontrolled weight and geometry from a fixedheight on the test specimen. It is especiallyuseful in developing compounds to absorbvibration. The lower the resilience, the lessvibration transmissibility.

The Shore resiliometer is to resilience what theShore durometer is to indentation hardness.It complements the Shore durometer andmeasures an entirely different property.Unless the resilience as well as the hardness ofcompounds are identified, the compounds arenot fully tested. Using both instruments raisesquality control levels to its peak.


The rebound is measured by observing theheight to which the top of the plungerrebounds on the 0 to 100 scale.

Features

h Base, post, scale, plunger, brush, pass or fail mask.

h Supplied with vinyl dust cover, instructionsand parts list.

h Conforms to ASTM D 2632.

Catalog Number 407400000

Scale Range 0 to 100

Scale Resolution (Points) 1.0

Throat Depth 44 mm (1.75 in)

Jaw Capacity 89 mm (3.5 in)

Table Dimensions 180 mm x 115 mm (2.1 in x 4.5 in)

Overall Dimensions 559 mm x 248 mm x 241 mm (22 in x 9.75 in x 9.5 in)

Weight 7.7 g

Testing Standards ASTM D 2632

Specifications

Resiliometer model Rd

Why Use a Resiliometer?The measure of a material's capacity for elastic recoveryis its resilience. Resilience is an indicator of a material'sability to absorb energy without undergoing permanentdeformation. Resilience is an important factor whendeveloping compounds to absorb vibration.


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Shore® Calibration and Repair Services

The Shore laboratory, based in theMassachusetts facility, is a full service repairand precision calibration facility for all types of durometers, test blocks, andrelated systems and accessories. The lab is accredited by NVLAP® to ISO/ IEC 17025. Our scope of accreditation can be found at www.instron.com. The lab performs calibrations to the followingstandard methods: h ASTM D 2240

h DIN 53505

h ASTM D 1415

h ISO 48

h ASTM D 2632

h ASTM C 886

h ASTM E 448

The lab meets the following quality standards:h ISO/ IEC 17025

h ISO 10012-1

h NCSL Z540-1

Features

Standard calibration and repair of analog durometers:h Replacement of the indenter, gasket, and

crystal (round-style)

h Replacement of the indenter and plastic lens (quadrant-style)

h Testing and certification of calibration

Standard calibration and repair ofoperating stands:h Adjustments

h Cleaning and lubrication

h Velocity calibration (CV, 900, 902, 903 and IRHD)

h Hydraulic oil changed (CV)

h Testing and certification of calibration

Type M Micro System* standardcalibration includes: h Cleaning and calibration of micro stand

h Replacement of the indenter

h Calibration of the micro durometer and rubber test block kit

h Certificate of calibration supplied

*It is strongly recommended that any testblock (or kit) used with the micro system issent in with the instrument for repair orcalibration. Type M rubber test block kits arecalibrated to the micro system

All rubber test blocks and test block kits arerecalibrated and recertified. Metal test blocksare not recertified, but are readjusted to readthe value engraved on the test block.

Factory Repair Services

Please contact us directly for pricing ortechnical information regarding your specific instrument. Priority service isavailable upon request.

Calibration of a S1 digital durometer

d

How Do I Arrange Service for My Shore durometer?Calibration and repair of any Shore product can easily be arranged by contacting us via telephone, fax, or email. h Phone: +1 800 695 4273 x5870 (U.S. only);

+1 781 575 6000 (outside U.S.)

h Fax: +1 781 575 5602

h Contact us: www.shoreinstruments.com/calibration


Corporate Headquarters100 Royall Street, Canton, MA 02021-1089 USATel: +1 800 564 8378

+1 781 575 5000 Fax: +1 781 575 5751

www.instron.com

For information on Instron® products and services call your local worldwide sales, service and technical support offices:

An Instron Company

www.shoreinstruments.comInstron is a registered trademark of Instron Corporation. Other names, logos, icons and marks identifying Instron products and services referenced herein are trademarks of Instron Corporation and may not be used without the prior written permission of Instron. Other product and company names listed are trademarks or trade names of their respective companies. Copyright © 2004 Instron Corporation. All rights reserved. All of the specifications shown in this brochure are subject to change without notice.

WB1138B

USANorth America Sales and Service Center Sales Tel: +1 800 695 4273 or +1 781 575 6000

Fax: +1 781 575 5770Service and Technical Support Tel: +1 800 473 7838

Fax: +1 781 575 5144

CANADAToronto Tel: +1 905 333 9123

+1 800 461 9123

Fax: +1 905 639 8683

Alignment

It is critical that the presser foot is flat againstthe surface of the sample during the test.Carefully position handheld units so that thepresser foot is in even contact and theindenter is perpendicular with the test surface.Any deviation will cause low readings. Whenusing a stand, low readings frequently resultwhen the unit is mounted at a slight angle sothat the presser foot is not parallel with thesample supporting surface. The smallestangle will cause errors. Use the alignmenttool provided with the stand for best results.

Test Times

When comparing results it is important to use the same test times. Some materialsexhibit a large degree of flow after the full test load is applied. A one or two seconddifference in taking the reading can causesignificant variations.

Constant Force

The force used to press the durometer againstthe test surface should be constant. Too littleforce may not allow the presser foot to be infirm contact with the surface of the part. Toomuch force may cause the material to flowinto the indenter opening resulting in anexcessive compressive stress that will effect theShore readings. This is particularly true forsofter materials. When comparing resultsalways make sure the force is the same.

Round Part Testing

Small round parts, like o-rings, areparticularly difficult to test. Care must betaken to align the centerline of the samplewith the centerline of the indenter. Any offsetwill cause low readings. The M scale wasdesigned for testing o-rings and must be usedfor any that are too small for the A scale.

Sample Thickness

ASTM D 2240 defines the minimum thicknessof parts to be tested. Testing thinner samplesmay result in bad results. Parts can frequentlybe stacked or plied to get to the requiredthickness. If stacking is not possible, sometesting may be required to make sure thethickness is not causing bad results. Typicallyparts that are too thin will give results that aretoo hard.

Define Test Parameters

No matter what test methods you use alwaysdocument them on the test report so that theycan be reproduced.

Regular Calibrations

All instruments are subject to drift over time. Frequent testing with test blocks willhelp you monitor the performance of testers on a day-to-day basis. Rubber testblocks, however, are subject to hardnesschanges as they age. Therefore, annual direct calibrations are important to maintain a stable testing program.

How to Maximize the Performance of your Shore® Durometer

Shore durometers are suitable for a variety of applications

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