agma 910-c90

, G AGMA 9 lo-C90

(Revision of AGMA 114.02)

June 1990

Y.== Reproduced By GLOBAL s = ENGINEERING DOCUMENTS -= w 3 With The Permission Of AGMA -- -- Under Royalty Agreement

AMERICAN GEAR MANUFACTURERS ASSOCIATION

i .- Formats for Fine-Pitch Gear Specification Data

( ‘. AGMA INFORMATION SHEET

(This Information Sheet is NOT an AGMA Standard)

Formats for Fine-Pitch Gear Specification Data

[Tables or other self-supporting sections may be quoted or extracted in their entirety. Credit line should read: Extracted from AGMA 910-C90, Formats for Fine-Pitch Gear Specification Data, with the permission of the publisher, the American Gear Manufacturers Association, 1500 King Street, Suite 201, Alexandria, Virginia 22314.1

AGMA Information Sheets are subject to constant improvement, revision or withdrawal as dictated by experience. Any person who refers to AGMA Technical Publications should be sure that the publication is the latest available from the Association on the subject matter.

ABSTRACT

Formats for Fine-Pitch Gear Specification Data consists of a series of printed forms for gear drawings that contain the appropriate data to be tabulated by the gear designer for the gear manufacturer. Also included are a series of definitions of the various tabulated items. For an appendix, there are blank, pre-printed forms that can easily be copied for the user’s drawings.

Copyright 0, 1990

American Gear Manufacturers Association 1500 King Street, Suite 201 Alexandria, Virginia 22314

June, 1990

ISBN: 1-55589-571-g

AGMA ii 9 lo-c90


FOREWORD

[The foreword, footnotes, and appendices, if any, are provided for informational purposes only, and should not be construed as a part of American Gear Manufacturers Association 9 lo-C90, Formats for Fine-Pitch Gear Specification Data.]

Gathering of data for this Information Sheet, including questionnaires and surveys, was begun in the spring of 1953. The committee recognized at that time the need for standardized fine-pitch gear drawing format data. Individual sections on spur, helical, straight bevel, spiral and Zero1 bevel gears; worm and wormgears; face gears and pinions; and spur and helical racks were first prepared by the Task Committee on Drawing Formats.

Each section was carefully reviewed by the Fine-Pitch Gearing Committee. Certain sections were reworked to bring them in line with the work being done by the Aerospace Gearing Committee in the field of angular accuracy specification, The formats for spur and helical gears were published as Appendix C of AGMA Standard 207.04 in June, 1956. The formats for worm and wormgears were published as Appendix B of AGMA Standard 374.03 in July, 1956. The early development work, continued review and revision, and field testing has resulted in this Information Sheet which the committee feels is based on sound gear engineering and one which can be easily understood by both the shopman and inspector.

The first complete draft of this Information Sheet was prepared in September, 1957. It was approved by the AGMA membership in February, 1961. Printing of the Information Sheet was held up in order to make it conform to AGMA 390.03, AGMA Gear Handbook, Volume 1, Gear Classification, Materials and Measuring Methods for Unassembled Gears.

AGMA 114.02 was a revision of 114.01 which was approved by the AGMA membership in July, 1972.

AGMA 910-C90 is a revision of AGMA 114.02 which updates the style and formats for spur gears, helical gears, bevel gears, wormgearing, face gears and racks. It was approved by the members of the Fine-Pitch Gearing Committee on February 27, 1990. It was recommended by the Technical Devision Execitive Committee for publication and approved by the members on June 10, 1990.

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PERSONNEL of the AGMA Committee for Fine Pitch Gearing

Chairman: D. E. Bailey (Rochester Gear, Inc.)

ACTIVE MEMBERS

P. M. Dean, Jr. (Honorary Member) F. R. Estabrook, Jr. (Consultant) I. Laskin (Consultant) D. McCarroll (Gleason) J. R. Mihelick (Reliance Electric Company) R. Mills (Eastman Kodak) D. H. Senkfor (Precision Gear) L. J. Smith (Invincible Gear) R. E. Smith (Consultant) G. E. Thomas (Bison Gear)

ASSOCIATE MEMBERS

C. R. Firestone (Reliance Electric) D. R. Gimpert (Koepfer America) T. J. Krenzer (Gleason) G. E. Olson (Cleveland Gear) J. M. Olchawa (Litton) G. R. Schwartz (Power-Tech) E. E. Shipley (Mechanical Technology) J. L. Smallwood (Smallwood & Son Machine Co.) D. A. Sylvester (Power-Tech) T. Urabe (Tsubakimoto Chain) G. L. Vesey (ITW/Spiroid)

AGMA iv 910-c90


Table of Contents Section Title Page

1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2. Definitions of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

3. Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4. Gear Specification Formats for Spur and Helical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5. Gear Specification Formats for Bevel Gear Data . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6. Gear Specification Formats for Wormgearing Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

7. Gear Specification Formats for Face Gear Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

8. Gear Specification Formats for Rack Data . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . 16

Appendix

Gear Specification Formats for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , 19

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vi 9 lo-c90

1. Scope

The formats supplied are intended as guides in the preparation of fine-pitch (20 diametral pitch or finer) gear drawings. They show the proper data to be placed on drawings of gears which are to be used for general purpose light loads or control gear applications. In each case the data shown indicates the minimum or basic number of items that should be specified for each type of gearing.

2. Definitions of Terms

Addendum, a. Addendum is the height by which a tooth projects beyond (outside for external, or inside for internal) the standard pitch circle or pitch line; also the radial distance between the pitch circle and the addendum circle.

Addendum is a reference dimension shown on drawings as an engineering convenience.

In a bevel gear, addendum is the height by which a tooth projects beyond the pitch cone and is measured at the outer end of the teeth.

In wormgearing, addendum is the radial distance between the standard pitch cylinder and the outside circle of the worm and wormgear. Its actual value is dependent on the specification of outside diameter of the worm. In the case of throated wormgears the addendum is the radial distance from the pitch cylinder to the deepest portion of the throat.

Backlash, B. Backlash is the amount by which the width of a tooth space exceeds the thickness of the engaging tooth on the operating pitch circles.

As actually indicated by measuring devices, backlash may be determined variously in the transverse, normal, or axial planes, and either in the direction of the pitch circles, or on the line of action. Such measurements may be converted to corresponding values on transverse pitch circles for general comparisons.

Backlash can also be determined from measurements made on a variable center distance fixture.

Chordal Addendum, uc. Chordal addendum is the height from the top of the tooth to the chord subtending the circular thickness arc. This dimension is required when making chordal tooth thickness measurements of the gears.

Chordal Thickness, tc. Chordal Thickness is the length of the chord subtending a circular thickness arc. It is generally difficult to make chordal tooth measurements on gears of diametral pitches finer than 48 or worms finer than 0.065 circular pitch. Other means of specifying gear tooth thickness may be required for very fine diametral pitch gears.

Composite Action Test (Double Flank). The composite action test is a method of inspection in which the work gear is rolled in tight double flank contact with a master or a specified gear, in order to determine composite variations. The composite action test must be made on a variable center distance composite action test device.

Composite Tolerance, Tooth-to-Tooth (Double Flank), VqT- The permissible amount of tooth-to-tooth composite variation.

Composite Tolerance, Total (Double Flank), V cqp The permissible amount of total composite variation.

Composite Variation (Double Flank). Com- posite variation is the total change in center distance when a gear is inspected by a composite action test.

Composite Variation, Tooth-to-Tooth (Double Flank), V . The greatest change in center distance w * e %ll the gear being tested is rotated through 360 degree/N during a double flank composite action test.

Composite Variation, Total (Double Flank), v . The total change in center distance while the g% being tested is rotated one complete revolution during a double flank composite action test.

Control Gear Part Number. Control gear part number is a reference to the specific gear to be used to control the tooth thickness of the gear under consideration. Since master gears are not commonly available for bevel gears, it is customary to use a control gear, which is obtained


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by selection, when inspecting subsequent gears of a given gear tooth design.

Cutter Number. Cutter number is a specification of the cutter to be used to cut the face gear. The correct generation of a face gear tooth profile is dependent upon the correct selection of the cutter.

Dedendum, b. Dedendum is the depth of a tooth space below the standard (reference) pitch circle or pitch line; also the radial distance between the pitch circle and the root circle.

Dedendum in bevel gearing is the portion of the tooth extending below the pitch cone and is measured at the outer end of the teeth.

Face Angle, TO. Face angle, in a bevel or hypoid gear, is the angle between an element of the face cone and its axis. The face cone is customarily defined by the top lands of the teeth. In some designs of bevel gearing the face cone elements do not pass through the apex.

Grinding Wheel or Cutter Diameter. Grinding wheel or cutter diameter is a necessary specification of the size of the cutter required to produce the desired worm thread profile. The thread profile can be shown to vary depending on the diameter of the cutter used to produce the thread.

Hand of Helix. Hand of helix is the direction in which the teeth twist as they recede from an observer looking along the axis. A right hand helix twists clockwise and a left hand helix twists counterclockwise.

A left hand helical rack has teeth which recede toward the left when viewed perpendicularly to the face of the rack; that is, when viewed in a direction parallel to the theoretical axis of the rack. A right hand helical rack has teeth which recede toward the right when viewed perpendicularly to the face of the rack; that is, when viewed in a direction parallel to the theoretical axis of the rack.

Hand of Spiral. Hand of spiral is the direction in which the teeth twist from an observer looking along the axis toward the face of the bevel gear. A right hand spiral twists clockwise; left hand, counterclockwise.

AGMA 2

Helix Angle, $. Helix angle is the angle between any helix and an element of its cylinder. In helical gears and worms, it is at the standard pitch circle unless otherwise specified.

Initial Contact Area. Initial contact area is a specification of the amount of the area of contact between master and gear. An initial area of contact of approximately 50 percent is generally considered satisfactory.

Inner Diameter. Inner diameter is the diameter of the cylinder bounding the inner ends of the face gear teeth. This diameter is given a plus tolerance.

Lead. Lead is the axial advance of a helix for one complete revolution (360 degrees), as in the threads of cylindrical worms, and the teeth of helical gears. It also applies to the teeth of a wormgear.

Lead Angle, X. Lead angle is the angle between any helix and a plane of rotation. It is the complement of the helix angle and is used for convenience in worms and hobs. It is understood to be at the pitch diameter unless otherwise specified.

Lead Tolerance. Lead tolerance is the allowable departure from the theoretical lead. In the case of a single thread worm the lead tolerance is customarily specified over one turn and over three turns of the thread. In the case of multiple thread worms, lead tolerance is specified over 1 axial pitch and over three axial pitches. Note: The term lead tolerance does not apply to helical gears. Tooth Alignment Tolerance is the proper term. See ANWAGMA 2000-A88 for a more complete discussion.

.

Machine Set-up Summary. Machine set-up summary is the information required to make machine settings. While the information for machine settings may be shown on the part drawing, it is customary, and usually preferred, to have a separate data sheet giving this information. When a separate data sheet is used, its summary drawing number should be given on the part drawing.

Master Gear Specification. Master gear specification is a specific reference to the master required to inspect a gear. This may be

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referenced in one of the following manners: number of teeth and basic tooth thickness, tool number, or the code number of the master gear required.

Mating Gear Part Number. Mating gear part number may be shown as a convenient reference.

Maximum Root Diameter. Maximum root diameter is specified to assure adequate clearance for the outside diameter of the mating gear.

Measurement Over Pins. Measurement over pins is the measurement of the distance over a pin positioned in a tooth space and a reference surface. The reference surface may be the reference axis of the gear, a datum surface or either one or two pins positioned in a tooth space or spaces opposite the first. This measurement is used to determine tooth thickness and is not applicable to face gears, bevel gears, or throated wormgears.

Worms are usually checked over 3 wires. Balls may be used for larger size internal helical gears.

Minimum Backlash at Assembly. Minimum backlash at assembly is often specified to assist in the assembly operation when adjustable centers are used.

Minimum Operating Mounting Distance. Minimum operating mounting distance is often specified to eliminate the necessity of getting prints of the mating gear and assemblies for checking the design specifications, interference, backlash and determination of master gear specification.

Mounting Distance. Mounting distance is the distance from the axis of the mating part to the mounting surface of the part under consideration in gearing on perpendicular axes.

In bevel gearing, the mounting distance of the gear is the distance from the axis of the pinion to the surface of the gear that controls its axial position. The mounting distance of the pinion is the distance from the axis of the gear to the surface of the pinion that controls its axial position.

In face gearing, the mounting distance of the face gear is the distance from the axis of the pinion to the surface on the gear that controls its axial position.

In wormgearing, the mounting distance is a specification that controls the position of the worm in the throat of the wormgear teeth.

Normal Chordal Addendum, ant. Normal chordal addendum is the chordal addendum in the plane normal to the pitch helix at the center of the tooth. Any convenient measuring diameter may be selected, not necessarily the pitch diameter.

Normal Chordal Thickness, t nc. Normal chordal thickness is the chordal thickness in the plane normal to the pitch helix or the tooth trace at the center of the tooth. Any convenient measuring diameter may be selected, not necessarily the pitch diameter.

Number of Teeth, N. The number of teeth in 360 degrees of gear circumference. In case of a sector gear, both the actual number of teeth in the sector and the theoretical number of teeth in 360 degrees should be given.

Number of Threads. The number of threads in a worm is the number of threads contained in the whole circumference of the pitch circle. The term “starts” is sometimes used to differentiate between the number of convolutions along the length of the worm, and individual number of threads.

Number of Threads or Teeth. Number of threads or teeth in mating part is shown for reference purposes only.

Outer Cone Distance, 4. The outer cone distance in bevel gears is the distance from the apex of the pitch cone to the outer ends of the teeth. When not otherwise specified, the short term cone distance is assumed to be outer cone distance. It is customary to give the diametral pitch, tooth thickness, addendum, and dedendum in bevel gears at the outer cone distance and, although not essential, to make the elements of the back cone perpendicular to the elements of the pitch cone.

Outer Diameter. Outer diameter is the diameter of the cylinder bounding the outer ends of the


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face gear teeth. This diameter is given a minus tolerance.

Outside Diameter, D,. Outside diameter is the diameter of the addendum (outside) circle. In a bevel gear it is the diameter of the crown circle. In a throated wormgear it is the maximum diameter of the blank. The term applies to external gears.

Outside diameter is usually shown on the drawing of the gear together with other blank dimensions so that it will not be necessary for machine operators to search gear tooth data for this dimension. Since outside diameter is also used in the manufacture and inspection of the teeth, it may be included in the data block with other tooth specifications if preferred. To enable use of topping hobs for cutting gears on which the tooth thickness has been modified from standard, the outside diameter should be related to the specified equivalent testing radius. See test radius.

Pitch, Axial. Axial pitch is the pitch of a gear parallel to the axis of rotation.

Pitch, Circular, p. Circular pitch is the distance along a specified pitch circle or pitch line between corresponding profiles of adjacent teeth. Unless otherwise specified it is given on the standard pitch circle.

Pitch, Diametral, pd. Diametral pitch is the ratio of the number of teeth to the pitch diameter in the transverse plane. It is also defined from the pitch of the basic rack.

pd = NID or pd = dp

Pitch, Normal Diametral, P&I. The normal diametral pitch is a ratio of the pitch diameter to the number of teeth corrected by the helix angle. In helical gearing, the diametral pitch can be referenced to the normal plane by applying the cosine of the helix angle.

P nd = Pd I cos qr = N ID cos @

Pitch Angle, P. The pitch angle in bevel gears is the angle between an element of a pitch cone and its axis. In external and internal gears, the pitch angles are respectively less than and greater than 90 degrees. The sum of the pitch angles of the

gear and its mate should equal the shaft angle of the pair. Although pitch angle cannot be directly measured, it is a convenience when considering the engineering aspect of the gear.

Pitch Plane to Reference Surface Dimension. Pitch plane to reference surface dimension of a spur or helical rack is that dimension used to establish location of the pitch plane. The reference surface usually is, but may or may not be, the mounting surface.

Point Width of Grinding Wheel or Cutter. Point width of grinding wheel or cutter is a specification controlling the space width and the whole depth of the thread of the worm.

Pressure Angle, +, is in general the angle at a pitch point between the line of pressure which is normal to the tooth surface, and the plane tangent to the pitch surface. The pressure angle gives the direction of the normal to the tooth profile. The pressure angle is equal to the profile angle at the standard pitch circle and can be termed the *‘standard” pressure angle at that point.

Profile Angle, Normal, $r. The normal profile angle is the angle at a point on the pitch cylinder between the line of action which is normal to the tooth surface and the plane tangent to the pitch cylinder.

Profile Angle, Transverse, $ . The transverse profile angle is the profile angle in a transverse plane. Quality Number, AGMA, Q. AGMA quality number is specified for convenience when talking or writing about the accuracy of the gear. These classes are defined in ANWAGMA 2000-A88 and AGMA 390.03a.

Root Angle, rR. Root angle, in a bevel or hypoid gear, is the angle between an element of the root cone and its axis. The root cone is customarily defined by the bottom lands of the teeth; however, in some designs of straight bevel gears the bottom lands are not straight line elements, and in other designs the root cone elements do not pass through the pitch cone apex.

Shaft Angle, C. The shaft angle is the angle between the axes of two non-parallel gear shafts. In a pair of crossed helical gears, the shaft angle lies between the oppositely rotating portions of the


AGMA 4 9 lo-c90

two shafts. This applies also in the case of wormgearing. In bevel gears, the shaft angle is the sum of the two pitch angles. In hypoid gears, the shaft angle is given when starting a design, and it does not have a fixed relation to the pitch angles and spiral angles.

Spiral Angle, e. Spiral angle, in a spiral bevel gear, is the angle between the tooth trace and an element of the pitch cone, and corresponds to the helix angle of helical teeth. Unless otherwise specified, the spiral angle is understood to be at the mean cone distance.

Testing Load. Testing Load is the recommended load between the work and the master gear when performing the rolling test as specified in ANWAGMA 2000-A88. Incorrect testing load will result in incorrect measurement of testing radius.

Tooth Contact Pattern Displacement. The tooth contact pattern of face gears is very sensitive to small changes in mounting distance. In cases where smooth operation is critical, it is desirable not to depart more than +O.OOl inches from the nominal setting. The shape and location of the tooth contact pattern is influenced by cutter size,

Standard Pitch Diameter, D. The standard pitch cutter tilt, and blank proportions. diameter is the diameter of the standard pitch Tooth Form. Tooth form defines the pinion or circle. In spur and helical gears, unless otherwise gear tooth profile, and may be specified as specified, pitch diameter is related to the number standard addendum, long addendum, short of teeth and the standard transverse pitch. It is addendum, modified involute, or special. In case obtained as: a modified involute or special tooth form is

D= N / Pd = Nxph required, a detailed view should be shown on the drawing.

Surface Texture. Surface texture on functional profile surfaces is a measure of the quality of the surface finish of the tooth. It is very difficult to accurately determine the surface roughness of fine pitch gears. For many applications it is considered to be acceptable on gears which meet the maximum tooth-to-tooth composite tolerance specification.

Test Radius, Rr . The test radius is a number used as an arithmetic convention established to simplify the determination of the proper test distance between a master and a work gear for a composite action test. It is used as a measure of the effective size of a gear. The test radius of the master, plus the test radius of the work gear is the set-up center distance of a composite action test device. Test radius is not the same as the operating pitch radii of the two tightly meshing gears unless both are perfect and to basic or standard tooth thickness.

Testing dimension of a face gear is the distance from the mounting surface of the face gear to the standard pitch line of a standard master when in intimate contact under recommended load on a variable center distance running gage.

Tooth form on worms and wormgears is a specification of the profile of the thread or the wormgear tooth. The section in which the tooth form is specified should be noted. The worm thread profile is usually controlled by a specification of the cutter, and the wormgear tooth profile may be controlled by a reference to either the mating worm or preferably to the hob designed to cut the wormgear. Special cases should be controlled by reference to a tooth profile chart.

Tooth Thickness. Tooth thickness is the thickness of a tooth at a specified diameter or tooth height.

Maximum calculated circular thickness on the standard pitch circle is the tooth thickness which will provide the desired minimum backlash when the gear is assembled in mesh with its mate

It is best on minimum mounting distance. controlled by testing in tight mesh with a master which integrates all the tolerances in the several teeth in the mesh through the arc of action. It is independent of the effects of runout. Circular thickness is used for calculating purposes and is not directly measured.

Maximum calculated normal circular thickness is the circular tooth thickness in the


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normal plane which satisfies requirements explained in maximum calculated circular thickness on the standard pitch circle.

Maximum calculated thread thickness is the thickness of the worm thread on a standard pitch circle. It is the thickness which will provide the desired minimum backlash when the gear is assembled in mesh with the worm on minimum center distance. It is best controlled by means of chordal thickness or over-pins measurements. In wormgearing it is customary to vary the thickness of the worm thread in order to achieve the desired backlash in the mesh. A change in the thickness of the worm thread will not affect the initial contact area between worm and thread to the same degree as a change in the thickness of the wormgear teeth.

Whole Depth, h, . Whole depth is the total depth of a tooth space. It is equal to the addendum plus dedendum; also equal to working depth plus clearance. Whole depth is used as a guide in selecting the proper cutter. Its actual value is dependent on the specification of outside diameter.

In the case of bevel gears, whole depth is specified at the large end or heel of the tooth.

In the case of wormgearing whole depth is the total radial depth of the tooth or thread space. In the case of the worm its actual value is dependent on the specification of outside diameter and of root diameter, or in some cases by a specification of the point width of the cutter or grinding wheel, and the thread thickness of the worm. The values

of addendum and whole depth on a wormgear are customarily controlled by a specification of the cutting tool used to produce the wormgear.

In the case of face gearing whole depth is the total depth of a tooth space. It is the distance between the plane defining the roots of the teeth and the plane defining the top lands of the teeth.

3. Application

In addition to the information shown on the tooth data format, the following items should be shown, usually in the form of notes:

(1) Material specification (2) Heat treatment data (3) Surface protective finishes

A gear drawing may become a part of a contract between a gear manufacturer and a buyer. Therefore, no detail essential to the manufacturing of the gears should be omitted or left to chance. In fairness to both parties, the drawing should be specific and complete.

Before using any one format, be sure to become familiar with all parts of this Information Sheet.

3.1 Significant Digits. In the format sheets, five decimal places are shown for accuracy of calculation. This is not an indication of tolerance.

3.2 Contact Pattern. Gear tooth contact patterns, if required, are to be negotiated between the manufacturer and the buyer.

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4. Gear Specification Formats for Spur and Helical Data

Tooth Form per AGMA 207.06

Part Name Part No.

SPUR GEAR DATA

Basic Specifications

Number of Teeth Diametral Pitch

Profile Angle

Tooth Form Circ. Tooth Thickness on Std. Pitch Diameter (Max. Calculated)

Manufacturing and Inspection

Outside Diameter Outside Diameter Concentricity (Full Indicator Movement)

Root Diameter, Maximum

Pin Diameter

Measurement Over - Pins (Used for inspection if test radius not given) Master Gear Specification

Testing Load

Total Composite Tolerance

Tooth-to-Tooth Composite Tolerance

Test Radius (Max/Min)

Reference Data

Standard Pitch Diameter

Addendum

Whole Depth, Minimum

AGMA Quality Number

Mating Gear Drawing Number

xxx

xxx.xxxxx

xx.xxxxx”

.xxxxx

xx.xxx

.xxx

xx.xxx

.xxxxx

xx.xxxx

.xxxx

.xxxx

xx.xxxx

xx.xxxxx

.xxxx

.xxx

QXX

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I-- Tooth Form oer AGMA 207.06 I

I Part Name Part No.

r INTERNAL, SPUR GEAR DATA


Number of Teeth xxx

Diametral Pitch xxx.xxxxx

Profile Angle xx.xxxxx”

Tooth Form Circ. Tooth Thickness on Std. Pitch Diameter (Max. Calculated)


Inside Diameter

Inside Diameter Concentricity (Full Indicator Movement)

.xxxxx

xx.xxx

.xxx

Root Diameter, Minimum

Pin Diameter

xx.xxx

.xxxxx

Measurement Between - Pins for insnection if test radius not given) 1 xx.xxxx

Master Gear Specification

Testing Load



.xxxx

.xxxx

Test Radius (Max/Min) xx.xxxx

Reference Data

1 Standard Pitch Diameter xx.xxxxx Addendum


AGMA Quality Number Mating Gear Drawing Number

QXX

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Part Name Part No.

HELICAL GEAR DATA


Number of Teeth

Normal Diametral Pitch

xxx

xxx.xxxxx

Normal Profile Angle

Helii Angle, Hand (LH or RH)

Tooth Form

xx.xxxxx”

xx.xxxxx”

Normal Circ. Tooth Thickness on Std. Pitch Dia. (Max. Calculated)


.xxxxx

I Outside Diameter I xx.xxxn Outside Diameter Concentricity (Full Indicator Movement)


.xxxx

xx.xxx ~ Pin Diameter

~ Measurement Over - Pins (Used for inspection if test radius not given) Master Gear Specification

Testing Load Total Composite Tolerance

Tooth-to-Tooth Comnosite Tolerance

.xxxxx

xx.xxxx

.xxxx

.xxxx


Reference Data

xx.xxxx

Standard Pitch Diameter I xx .xxxxx I Transverse Diametral Pitch

Transverse Profile Angle

xxx.xxxxx

xx.xxxxx”

Addendum

Whole Depth, Minimum Lead

.xxxx

.xxx

xxx.xxxxx

AGMA Quality Number

Mating Gear Drawing Number QXX

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I Tooth Form per AGMA 207.06


INTERNAL HELICAL GEAR DATA


Number of Teeth


xxx

xxx.xxxxx


Helix Angle, Hand (LH or RH)

Tooth Form

xx.xxxxx”

xx.xxxxx”



.xxxxx

Inside Diameter



xx.xxxx

.xxxx

xx.xxx

Pin Diameter

Measurement Between - Pins (Used for inspection if test radius not given) Master Gear Specification

Testing Load

.xxxxx

xx.xxxx




Reference Data


Transverse Diametral Pitch

.xxxx

.xxxx

xx.xxxx

xx.xxxxx

xxx.xxxxx


Addendum

r ~~~ Whole Denth. Minimum

xx.xxxxx”

.xxxx

I .xxx I Lead

AGMA Quality Number


xxx.xxxxx

QXX

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5. Gear Specification Formats for Bevel Gear Data

Tooth Form per ANSIIAGMA 2005B88

Part Name Part No.

STRAIGHT BEVEL GEAR DATA*


Number of Teeth xxx

Diametral Pitch xxx.xxxxx

Standard Pitch Diameter xx .xxxxx

Profile Angle xx.xxxxx”

Shaft Angle xx.xxxxx”

Pitch Angle xX.xXxX0

Addendum .xxxx

Whole Depth, Minimum .xxx

Root Angle xx.xxxx o

Face Angle xX.xXxX0

Outside Diameter xx.xxxx

-Ref. Circ. Thickness on Std. Pitch Circle .xxxxx

Ref. Number of Teeth in Mating Gear xxx


Mounting Distance xx.xxx


Control Gear Number

Chordal Addendumt .xxxx

Chordal Thickness t .xxxx

AGMA Quality Number QXX Backlash with Mate or Control Gear at Specified Mounting Distance (MaxJMin.) .xxxx

Total Composite Tolerance .xxxx

l For data on the determination of bevel gear tooth proportions, see ANSUAGMA 2005B88. For data on inspection and quality class, see AGMA 331.01 and 390.03a.

t This may not be applicable to finer pitch gears.

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SPIRAL BEVEL GEAR DATA*


I Number of Teeth xxx 1 Diametral Pitch xxx.xxxxx

Profile Angle xxx.xxxxx”

Spiral Angle xxx.xxxxx”

Standard Pitch Diameter xxx.xxxxx

I Shaft Angle xxx.xxxxx”

1 Pitch Angle xxx.xxxx”

1 Hand of Spiral, Pinion

I Addendum .xxxx I Whole Depth, Minimum .xxx 1 Root Angle

1 Face Angle I xX.xXxX0 I Outside Diameter

1 Tooth Form per ANSI/AGMA 2005-B88

I Circ. Thickness on Pitch Circle .xxxxx Ref. Number of Teeth in Mating Gear

Mating Gear Drawing Number xxx

I Mounting Distance I xx.xxx I I Manufacturing and Inspection r-c I

Control Gear Part Number

AGMA Quality Number

Total Comnosite Tolerance

QXX .xxxx

Ref. Machine Setup Summary Number Backlash with Mate or Control Gear at Specified Mounting Distance (Max./Mm) .xxxx

* For data on the determination of bevel gear tooth proportions, see ANSUAGMA 2005-B88. For data on inspection and quality class, see AGMA 331.01 and 390.03a.

AGMA 12 9 lo-c90


6. Gear Specification Formats for Wormgearing Data


Part Name Part No.

WORMGEAR DATA


Number of Teeth



Helix Angle Hand (LH or RH)

xxx

xxx.xxxxx

xx.xxxxx” xx.xxxxx”

Tooth Form, see AGMA Standard 374.04.

Outside Diameter

Throat Diameter (if required)


xxx .xxx

xxx.xxx

xxx.xxx



.xxxxx

Pin or Ball Diameter I .xxxxx Measurement Over Pins or Balls (Used for inspection if test radius not given) Total Comoosite Tolerance

xxx.xxxxx

.xxxx A


Mounting Distance

I

.xxxx

XXX

Reference Data

Standard Pitch Diameter I xxx.xxxxx

Circular Pitch


.xxxxx .xxx

AGMA Quality Number

Designed Center Distance

Lead of Mating Worm

Pitch Diameter of Mating Worm

Number of Threads in Mating Worm Mating Worm Drawing Number

QXX xxx.xxx

xx.xxxxx

xx.xxxxx

xx

NOTE: Normal Diametral Pitch is preferred as the basic design criterion; however, Circular Pitch may be used.

AGMA 13 910-c90



Part Name Part No.

WORM DATA


Number of Threads



xx

xxx.xxxxx

xx.xxxxx”

Lead

Lead Angle

xx .xxxxx

xx.xxxxx”

Hand (LH or RH)

Tooth Form; see AGMA Standard 374.04.

Outside Diameter xx.xxx


Normal Circ. Tooth Thickness on Std. Pitch Circle (Max. Calculated)


xx.xxx

.xxxxx

Pin Diameter

Measurement Over - Pins (Used for inspection if test radius not given) Total Composite Tolerance


Reference Data

.xxxxx

xx.xxxx

.xxxx

.xxxx


Axial Pitch

xx.xxxxx

.xxxxx


AGMA Quality Number


Pitch Diameter of Mating Wormgear


.xxx

QXX xxx .xxx

xxx.xxxxx

NOTE: Normal Diametral Pitch is preferred as the basic design criterion; however, Axial Pitch may be used.

AGMA 14 9 lo-c90


7. Gear Specification Formats for Face Gear Data


Part Name Part No.

FACE GEAR DATA



Profile Angle (Cutter)

Circular Tooth Thickness on Standard Pitch Line (Max. Calculated)

Addendum

Whole Depth Minimum

Outer Diameter

Inner Diameter


Testing Dimension (Center Line of Pinion to Mounting Surface)

AGMA Quality Number



Reference Data

Mounting Distance

Cutter Number


Master Number of Teeth

xxx

xxx.xxxxx

xx.xxxxx”

.xxx

.xxx

.xxx

xx.xxx

xx.xxx

xx.xxxx

QXX .xxxx

.xxxx

xx.xxxx

xxx

NOTE: For data on the determination of face gear tooth proportions, see AGMA 203.03.

AGMA 15 9 lo-c90


8. Gear Specification Formats for Rack Data

Tooth Form ver AGMA 207.06

Part Name Part No.

SPUR RACK DATA


Number of Teeth I xxx Diametral Pitch I xxx.xxx Profile Angle

Tooth Form

xx.xxxxxO

Circ. Tooth Thickness on Std. Pitch Line (Max. Calculated)

Manufacturing and Inspection I .xxxxx

Pin Diameter I .xxxxx ’

Measurement Over ---- Pins (Used for inspection if test radius not given) Master Gear Specification

Testing Load


xx.xxxx

.xxxx


Test Dimension (Max/Mm)

.xxxx

xx.xxxx

Reference Data

Standard Pitch Line to Reference Plane

Addendum


AGMA Quality Number


xx.xxxx

.xxxx

.xxx

QXX

AGMA 16 9 lo-c90


Tooth Form Der AGMA 207.06 I


HELICAL RACK DATA


Number of Teeth xxx



xxx .xxx

xx.xxxxx”

Helix Angle, Hand (LH or RH) xx.xxxxx” I

Tooth Form

Normal Circ. Tooth Thickness on Std. Pitch Line (Max. Calculated) .xxxxx


Pin Diameter .xxxxx Measurement Over - Pins (Used for inspection if test radius not given) Master Gear Soecification

xx.xxxx

I Testing Load

I Total Composite Tolerance I .xxxx I Tooth-to-Tooth Composite Tolerance

Test Dimension (Max/Min)

.xxxx

xx .xxxx

I Reference Data I

r Standard Pitch Line to Reference Plane I xx.xxxx I Transverse Diametral Pitch


xx.xxxxx

xx.xxxxx”

Addendum

Whole Depth

AGMA Quality Number

.xxxx

.xxx

QXX Mating Gear Drawing Number

AGMA 17 910-c90

AGMA


(this page has been left blank)

18 910-c90


Appendix A This Appendix consists of blank, pre-printed forms that can

easily be copied for the user’s drawings.


Part Name Part No.

SPUR GEAR DATA


1 Number of Teeth I I Diametral Pitch

Profile Angle

1 Tooth Form Circ. Tooth Thickness on Std. Pitch Diameter (Max. Calculated) I


1 Outside Diameter I I Outside Diameter Concentricity (Full Indicator Movement) Root Diameter, Maximum

Pin Diameter

Measurement Over - PiI-lS (Used for inspection if test radius not given) Master Gear Specification

Testine Load




Reference Data

Standard Pitch Diameter I 1 Addendum


AGMA Quality Number


AGMA 19 9 lo-c90



Part Name Part No.

INTERNAL SPUR GEAR DATA



Profile Angle

I Tooth Form

1 Circ. Tooth Thickness on Std. Pitch Diameter (Max. Calculated) 1 I

I Manufacturing and Inspection I I I I- ~~~ ~~ Inside Diameter

Inside Diameter Concentricity (FuIl Indicator Movement)


Pin Diameter

Measurement Between - Pin.5 (Used for inspection if test radius not given) Master Gear Specification

Testing Load

I~- ~~~ Total Composite Tolerance I I Tooth-to-Tooth Composite Tolerance

1 Test Radius (Max/Min)

Reference Data


Addendum


AGMA Oualitv Number


AGMA 20 9 lo-c90


Part Name


Part No.

HELICAL GEAR DATA


Number of Teeth I Normal Diametral Pitch



Tooth Form



I Outside Diameter I I Outside Diameter Concentricity (Full Indicator Movement)

Root Diameter, Maximum Pin Diameter


Testing Load Total Composite Tolerance


Test Radius (MaxiMin)

I RefeTence Data

Standard Pitch Diameter I 1 Transverse Diametral Pitch


Addendum

Whole Depth, Minimum Lead

AGMA Quality Number

Mating Gear Drawing Number I I

AGMA 21 910-c90


Tooth Form oer AGMA 207.06

Part No.

INTERNAL HELICAL GEAR DATA


Number of Teeth I Normal Diametral Pitch


1~ Helix Angle, Hand (LH or RI-I) I I Tooth Form



Inside Diameter



Pin Diameter

I Measurement Between - Pins (Used for insnection if test radius not given) I I

I Master Gear Specification I I Testing Load Total Composite Tolerance

1 Tooth-to-Tooth Composite Tolerance


I r-- ~ Standard Pitch Diameter

Reference Data

I I I


Transverse Profile Angie

Addendum

Whole Depth, Minimum ! I 1 Lead I I

AGMA Quality Number

Matinp Gear Drawine Number

AGMA 22 9 lo-c90



Part Name Part No.

STRAIGHT BEVEL GEAR DATA*


I Number of Teeth

Diametral Pitch


Profile Angle

1 Shaft Angle I I Pitch Angle r Addendum

1 Whole Depth, Minimum

Face Angle

Tooth Form

Outside Diameter

Ref. Circ. Thickness on Std. Pitch Circle

Ref. Number of Teeth in Mating Gear


Mounting Distance


Control Gear Number

Chordal Addendumt Chordal Thickness?

AGMA Quality Number Backlash with Mate or Control Gear at Specified Mounting Distance (Max./Min.) I I Total Composite Tolerance I I * For data on the determination of bevel gear tooth proportions, see ANSVAGMA 2005-B88.

For data on inspection and quality class, see AGMA 331.01 and 390.03a. t May not be applicable to finer pitch gears.

AGMA 23 9 lo-c90


Tooth Form per ANSIIAGMA 2005-888

Part Name Part No.

SPIRAL BEVEL GEAR DATA*


Number of Teeth

Diametral Pitch

Profile Angle

Spiral Angle


Shaft Angle Pitch Angle

Hand of Spiral, Pinion

Addendum


Root Angle

Face Angle

Outside Diameter

Tooth Form per ANWAGMA 2005B88 Circ. Thickness on Pitch Circle

Ref. Number of Teeth in Mating Gear Mating Gear Drawing Number

Mounting Distance


Control Gear Part Number

AGMA Quality Number


Ref. Machine Setup Summary Number

Backlash with Mate or Control Gear at Specified Mounting Distance (Max./Mm)

* For data on the determination of bevel gear tooth proportions, see ANSUAGMA 2005B88. For data on inspection and quality class, see AGMA 331.01 and 390.03a.

AGMA 24 9 lo-c90



Part Name Part No.

WORMGEAR DATA


Number of Teeth



Helix Angle Hand (LH or RH)


Outside Diameter

Throat Diameter (if required)




Pin or Ball Diameter

Measurement Over Pins or Balls (Used for inspection if test radius not given) Total Composite Tolerance


Mounting Distance

Reference Data


Circular Pitch


AGMA Quality Number


Lead of Mating Worm

Pitch Diameter of Mating Worm

Number of Threads in Mating Worm Mating Worm Drawing Number

NOTE: Normal Diametral Pitch is preferred as the basic design criterion; however, Circular Pitch may be used.

AGMA 25 9 lo-c90


Tooth Form per AGMA 374.04 I

Part Name


Part No.

WORM DATA

Number of Threads



Lead

Lead Angle Hand (LH or RH)


Outside Diameter


Pin Diameter

Measurement Over - ’ (Used for inspection if test ra%s not given) Total Composite Tolerance


Reference Data


Axial Pitch


AGMA Quality Number Designed Center Distance

Pitch Diameter of Mating Wormgear Mating Gear Drawing Number

NOTE: Normal Diametral Pitch is preferred as the basic design criterion; however, Axial Pitch may be used.

AGMA 26 910-c90



Part Name Part No.

FACE GEAR DATA


Number of Teeth

Diametral Pitch

Profile Angle (Cutter) Circular Tooth Thickness on Standard Pitch Line (Max. Calculated)

Addendum


Outer Diameter

Inner Diameter


Testing Dimension (Center Line of Pinion to Mounting Surface)

AGMA Quality Number Total Composite Tolerance


Reference Data

Mounting Distance

Cutter Number


Master Number of Teeth

NOTE: For data on the determination of face gear tooth proportions, see AGMA 203.03.

AGMA 27 9 lo-c90



Part Name Part No.

SPUR RACK DATA



Profile Anele

Tooth Form I I Circ. Tooth Thickness on Std. Pitch Line (Max. Calculated)


Pin Diameter

Measurement Over - Pin3 I I (Used for inspection if test radius not given) Master Gear Specification

Testing Load



1 Test Dimension (Max/Min) I I

Reference Data

Standard Pitch Line to Ref. Plane

Addendum


AGMA Quality Number


AGMA 28 910-c90


Tooth Form oer AGMA 207.06

Part Name Part No.

HELICAL RACK DATA


Number of Teeth

Normal Diametral Pitch Normal Profile Angle


Tooth Form

Normal Circ. Tooth Thickness on Std. Pitch Line (Max. Calculated)


Pin Diameter


Testing Load



Test Dimension (Max/Min)

Reference Data

Standard Pitch Line to Ref. Plane



Addendum

Whole Depth

AGMA Quality Number


AGMA 29 9 lo-c90

agma 910-c90

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