1、 ASME BLB.25.2M b = 075b70 0574053 812 = The American Society of Mechanical Engineers AN AMERICAN NATIONAL STANDARD WOODRUFF KEYS AND KEYWAYS ASME BLB.25-2M 96 m 0759670 057110511 759 m Date of Issuance: July 31, 1996 This Standard will be revised when the Society approves the issuance of a new edit
2、ion. There will be no addenda or written interpretations of the requirements of this Standard issued to this edition. ASME is the registered trademark of The American Society of Mechanical Engineers. This code or standard was developed under procedures accredited as meeting the criteria for American
3、 National Standards. The Consensus committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment which provides an oppo
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7、ts responsibility for only those interpretations issued in accordance with governing ASME procedures and policies which preclude the issuance of interpretations by individual volunteers. No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise, without t
8、he prior written permission of the publisher. The American Society of Mechanical Engineers 345 E. 47th Street New York, NY 10017 Copyright B 1996 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A. FOREWORD (This Foreword is not part of ASME B18.25.2M-1996) In 1994
9、ASME Subcommittee B18.25 was created. This subcommittee then assumed the responsibilities of ANSI Standards Committee B 17. The first endeavor of this subcommittee was to create U.S. standards for metric Woodruff and square and rectangular keys. This Standard, covering square and rectangular keys, i
10、s based on the IS0 standard with modifications to reflect U.S. manufacturing and user needs. The final document was balloted June 29, 1995. Following approval by ASME, the document was submitted to the American National Standards Institute. This Standard was approved by ANSI on February 5, 1996. iii
11、 ASME B18.25.2M 96 = 0759670 0574056 521 = ASME STANDARDS COMMITTEE BI8 Standardization of Bolts, Nuts, Rivets, Screws, Washers, and Similar Fasteners (The following is the roster of the-Committee at the time of approval of this Standard.) OFFICERS K. E. McCullough, Chair D. A. Clever, Vice Chair E.
12、 Schwartz, Vice Chair A. M. Nickles, Secretary COMMITTEE PERSONNEL J. C. Akins. Safety Socket Screw Corp. J. B. Belford, Lawson Products, Inc. D. J. Broomfield, ITW Shakeproof J. A. Buda, SPS Technologies R. M. Byrne, Trade Association Management, Inc. D. A. Clever, Deere ial Fasteners Institute vi
13、ASIE 618-25.21 76 m O757670 0574058 3TY m CONTENTS Foreword Standards Committee Roster 1 Introductory Notes . 1.1 Scope . 1.2 Comparison With IS0 3912-1977 . 1.3 Dimensions 1.4 Tolerances . I . 5 Terminology . 1.6 Referenced Standards . 1.7 Designation 2 Requirements 2.1 Material . 2.2 Dimensions an
14、d Tolerances . Tables 1 Dimensions for Woodruff Keys . 2 Dimensions for Woodruff Keyways . . 111 V 2 2 2 3 4 vii ASME 838.25-211 76 0757670 0574059 230 = ASME 618.25.2M-1996 WOODRUFF KEYS AND KEYWAYS 1 INTRODUCTORY NOTES 1.1 Scope 1 .I .I This Standard covers requirements for metric Woodruff keys an
15、d keyways intended for both alignment of shafts and hubs, and transmitting torque between shafts and hubs. 1.1.2 The inclusion of dimensional data in this Standard is not intended to imply that all sizes described are production stock items. Consumers should consult with suppliers concerning lists o
16、f stock items. 1.2 Comparison With IS0 3912-1977 This Standard is based on IS0 3912-1977, Woodruff Keys and Keyways. However, to improve manufactura- bility, tolerances are decreased for the keyway width. The resulting fit is approximately the same. Keys manufactured to this Standard are functionall
17、y inter- changeable with keys manufactured to the IS0 standard. Because of tighter width tolerances in this Standard, products manufactured to the IS0 standard may not meet the requirements of this Standard. This Standard also differs from IS0 3912 in that it: (a) does not restrict the comers of a k
18、ey to be chamfered but allows either a chamfer or a radius on the key; (6) specifies a key material hardness rather than a tensile property; (c) specifies h12 rather than hll for the tolerance of the height of the keys. 1.3 Dimensions Unless otherwise specified, all dimensions in this standard are i
19、n millimeters (mm). 1.4 Tolerances Many of the tolerances shown in Tables 1 and 2 are from ANSI B4.2, Preferred Metric Limits and Fits (IS0 286-1 and IS0 286-2). As a result in addition to plus-minus tolerances which are common in the U.S. some are expressed as plus- plus deviations from the basic s
20、ize. For further interpre- tation of these tolerances refer to ANSI B4.2 or IS0 286. 1.5 Terminology For definitions of terms relating to fasteners or compo- nent features used in this Standard, refer to ANSI B18.12, Glossary of Terms for Mechanical Fasteners. 1.6 Referenced Standards Referenced ASM
21、E standards may be obtained from the American Society of Mechanical Engineers, 22 Law Drive, Box 2300, Fairfield, NJ 07007-2300. Referenced IS0 standards may be obtained from the American National Standards Institute, i i West 42nd Street, New York, NY 10036-8002. 1.7 Designation Keys conforming to
22、this Standard shall be designated by the following data, preferably in the sequence shown: (a) ASME document number; (6) product name; (c) nominal size width (b), height (h,), diameter (01 (d) form; (e) hardness (if other than non-hardened). EXAMPLES : (1) ASME B18.25.2M, Woodmff Key 6 x 10 x 25 nor
23、mal hardened; (2) ASME B18.25.2M. Woodruff Key 3 x 5 x 13 Whitney. 1 ASIE 838.25.211 96 0759670 05740b0 T52 ASME E1 8.25.2M-1996 WOODRUFF KEYS AND KEYWAYS 2 REQUIREMENTS 2.1 Material Standard steel keys shall have a hardness of 183 HV min. Hardened keys shall be alloy steel through hardened to a Vic
24、kers hardness of 390 to 510 HV. When other materials and properties are required, these shall be as agreed upon by the supplier and customer. 2.2 Dimensions and Tolerances Dimensions and tolerances for Woodruff keys are shown in Table 1. Recommended dimensions and tolerances for keyways are shown in
25、 Table 2. 2 ASME Bl18-25-2M 96 0759670 0574061 999 WOODRUFF KEYS AND KEYWAYS ASME B18.25.2M-1996 Normal Form /Full Radius Type1 Whitney Form (Flat Bottom Type1 TABLE 1 DIMENSIONS FOR WOODRUFF KEYS Diameter, D - Chamfer or Radius, u b th olerance 3ht h2 lotes (I), (2) H olerance h12 Key Size bxhlxD o
26、lerance h12 oierance h12 D hl Min. 11.44 1.52.67 22.67 23.7 1 O 2.53.710 3x513 36.516 46.516 47.519 56.516 57.519 5x922 6x922 6x1025 8x1128 1 Ox 13x32 1 1.5 2 2 2.5 3 3 4 4 5 5 5 6 6 8 10 4 1.4 2.6 2.6 3.7 3.7 5.0 6.5 6.5 7.5 6.5 7.5 9.0 9.0 10.0 11.0 13.0 1.1 2.1 2.1 3.0 3.0 4.0 5.2 5.2 6.0 5.2 6.0
27、 7.2 7.2 8.0 8.8 10.4 O -0.120 O -0.150 O -0.10 O -0.10 O -0.12 7 7 10 10 0.16 O -0.12 O -0.025 13 16 16 O -0.180 19 O -0.210 O -0.15 16 19 22 22 25 28 32 o -0.180 O -0.210 O -0.250 0.25 0.40 O -0.15 O -0.18 O -0.18 NOTES: (1) This form shall only be used by agreement between the supplier and custom
28、er. (2) Height h2 is based on 0.8 times height hi. 3 ASME BL8*25*2M 96 0759b70 O574062 825 +0.015 -0.015 -0.012 -0.042 +0.018 -0.018 -0.015 -0.051 ASME B18.25.2M-1996 WOODRUFF KEYS AND KEYWAYS Section A-A Detail Z 1 TABLE 2 DIMENSIONS FOR WOODRUFF KEYWAYS Kevwav DeP Shaft, ti Width Tolerance Note (1
29、11 I Hub, t2 Radius, R Free Fit Normal Fit I Close Fit Max. - 0.16 3asic Size 0.6 0.8 1 .o 1 .o 1.2 1.4 1.4 1.8 1.8 2.3 2.3 - 2.3 2.8 2.8 3.3 3.3 Key Size bxhlxd Shaft H9 +0.025 O +0.030 O Toler- ance +0.1 O +0.2 O Shaft N9 Hub Dl0 +0.60 +0.20 +0.078 +0.030 Basic Size 1 .o 2.0 1.8 2.9 2.7 3.8 5.3 5.
30、0 6.0 4.5 5.5 7.0 6.5 7.5 8.0 10.0 Toler- ance +0.1 O +0.2 O Basic Size Min. - 0.08 1 1.44 1.52.67 22.67 23.710 2.53.7 1 O 3x513 36.5 16 46.516 47.519 56.516 57.519 5x922 6x922 6x1025 8x1128 10x1332 1 1.5 2 2 2.5 3 3 4 4 5 5 5 6 6 8 10 -0.004 -0.029 -0.030 O 0.25 0.16 - 0.25 +0.3 O O -0.036 +0.036 O
31、 +0.098 +0.040 0.4 NOTES: (1) Note that some of the tolerances are expressed as plus-plus or minus-minus. See para. 1.4 for more information. (2) The nominal key diameter is the minimum keyway diameter. 4 ASME BL8-25-2M Yb = 0759670 0574063 761 = AMERICAN NATIONAL STANDARDS FOR BOLTS. NUTS. RIVETS.
32、SCREWS. WASHERS. AND SIMILAR FASTENERS Small Solid Rivets . B18.1.1-1972(R1995) Large Rivets B18.1.2-1972R1995) Metric Small Solid Rivets .Bl8.1.3 M-1983R1995) Square and Hex Bolts and Screws - Inch Series . B18.2.1-1981R1992) Square and Hex Nuts (Inch Series) B18.2.2-1987iR1993) Metric Hex Cap Scre
33、ws . B18.2.3.lM-l979(R1995) Metric Formed Hex Screws B18.2.3.2M-l979(R1995) Metric Heavy Hex Screws . Bl8.2.3.3M-l979(R1995) Metric Hex Flange Screws . B 18.2.3.4M-l984(R 1995) Metric Hex Bolts . B18.2.3.5M-l979(R1995) Metric Heavy Hex Bolts . B18.2.3.6M-l979(R1995) Metric Heavy Hex Structural Bolts
34、 B18.2.3.7M-l979(R1995) Metric Hex Lag Screws . B18.2.3.8M-l981(R1991) Metric Heavy Hex Flange Screws . B18.2.3.9M-l984(R1995) Metric Hex Nuts, Style 1 B18.2.4.1M-l979(R1995) Metric Hex Nuts, Style 2 B18.2.4.2M-l979(R1995) Metric Slotted Hex Nuts . B18.2.4.3M-l979(R1995) Metric Hex Flange Nuts .B18.
35、4.4.4 M.l982(R1993) Metric Hex Jam Nuts., . Bl8.2.4.5M-l979(R1990) Metric Heavy Hex Nuts . Bl8.2.4.6M-l979(R1990) Socket Cap, Shoulder and Set Screws - Inch Series B18.3-1986(R1995) Socket Head Cap Screws (Metric Series) . .B18.3.1 M.l986(R1993) Metric Series Hexagon Keys and Bits .B18.3.2 M.l979(R1
36、990) Hexagon Socket Button Head Cap Screws (Metric Series) .B18.3.4 M.l986(R1993) Hexagon Socket Flat Countersunk Head Cap Screws (Metric Series) .B18.3.5 M.l986(R1993) Metric Series Socket Set Screws .B18.3.6 M.l986(R1993) Round Head Bolts (Inch Series) . .B18. 5.1990 Metric Round Head Short Square
37、 Neck Bolts B18.5.2.1M-l981(R1995) Metric Round Head Square Neck Bolts . .B18.5.2.2 M.1982 Wood Screws (Inch Series) . B18.6.1-1981(R1991) Slotted Head Cap Screws, Square Head Set Screws, and Slotted Headless Set Screws B18.6.2-1972(R1993) Machine Scraws and Machine Screw Nuts B 18.6.3-1972( R1983)
38、Thread Forming and Thread Cutting Tapping Screws and Metallic Drive Screws (Inch Series) B18.6.4-1981(R1991) Metric Thread Forming and Thread Cutting Tapping Screws . .B18.6.5 M.l986(R1993) Metric Machine Screws .B18.6.7 M.l985(R1993) General Purpose Semi-Tubular Rivets, Full Tubular Rivets, Split R
39、ivets and Rivet Caps 18.7-1972(R1992) Metric General Purpose Semi-Tubular Rivets . .B18.7.1 M.l984(R1992) Clevis Pins and Cotter Pins (Inch Series) 818.8.1-1994 Taper Pins, Dowel Pins, Straight Pins, Grooved Pins, and Spring Pins (Inch Series) 818.8.2-1995 Spring Pins - Coiled Type (Metric Series) B
40、18.8.3M-1995 Spring Pins - Slotted (Metric Series) B18.8.4M-1994 Machine Dowel Pins - Hardened Ground (Metric Series) . B18.8.5M-1994 Cotter Pins (Metric Series) . B18.8.6M-1995 Headless Clevis Pins (Metric Series) . B18.8.7M-1994 Headed Clevis Pins (Metric Series) . B18.8.8M-1994 PIOW Bolts B18.9-1
41、958(R1995) Track Bolts and Nuts . B18.10-1982(R1992) Miniature Screws . B18.11-1961(R1992) Glossary of Terms for Mechanical Fasteners . .B18.1 2.1962(R1991) Screw and Washer Assemblies - Sems (Inch Series) B18.13-1987(R1993) Screw and Washer Assemblies - Sems (Metric Series) . B18.13.1M-1991 Forged
42、Eyebolts B18.15-1985(R1995) Mechanical and Performance Requirements for Prevailing-Torque Type Steel Metric Hex Nuts and Hex Flange Nuts . .B18.16.1 M.l979(R1995) Torque-Tension Test Requirements for Prevailing-Torque Type Steel Metric Hex Nuts and Hex Flange Nuts . .B18.16.2 M.l979(R1995) Hexagon S
43、ocket Head Shoulder Screws (Metric Series) .B18.3.3 M.1986iR1993) Round Head Square Neck Bolts With Large Head (Metric Series) .B18.5.2.3 M.1990 ASME BL8.25.2M 9b 0757670 05740b4 bT8 W Dimensional Requirements for Prevailing-Torque Type Steel Metric Hex Nuts and Hex Flange Nuts .818.16.3 M-1982iR199
44、3) Wing Nuts, Thumb Screws. and Wing Screws .B18.1 7.1968(R1983) Inspection and Quality Assurance for General Purpose Fasteners .B18.18.1 M.1987iR1993) Inspection and Quality Assurance for High-Volume Machine Assembly Fasteners . .Bl8.18.2 M.1987iR1993) Inspection and Quality Assurance for Special P
45、urpose Fasteners .B18.18.3 M-l987(R1993) Inspection and Quality Assurance for Fasteners for Highly Specialized Engineered Applications .B18.18.4 M.1987iR1993) Lock Washers (Inch Series). 818.21.1-1994 Lock Washers (Metric Series) . 818.21.2M-1994 Metric Plain Washers . 818.22M-l981(R1990) Plain Wash
46、ers . 818.22.1-1965(R1990) Square and Rectangular Keys and Keyways 818.25.1M-1996 Woodruff Keys and Keyways . 818.25.2M-1996 Helical Coil Screw Thread Inserts (Inch Series) . 818.29.1-1993 The ASME Publications Catalog shows a complete list of all the Standards published by the Society . For a complimentary catalog. or the latest information about our publications. call 1-800-THE-ASME (1.800.843.27631 .
