1、BRITISH STANDARD BS 6101-6: 1990 Machine tool ball screws Part 6: Specification for ball nuts and principal dimensions of ball screwsBS6101-6:1990 This British Standard, having been prepared under the directionof the Machine, Engineers and Hand Tools Standards Policy Committee, waspublished under th
2、e authorityof the Board of BSI andcomes into effect on 30November1990 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference MTE/1 Draft for comment 88/78339 DC ISBN 0 580 18332 7 Committees responsible for this British Standard The preparation of this Brit
3、ish Standard was entrusted by the Machine, Engineers and Hand Tools Standards Policy Committee (MTE/-) to Technical Committee MTE/1 upon which the following bodies were represented: Advanced Manufacturing Technology Research Institute Cranfield Institute of Technology Department of Trade and Industr
4、y Mechanical Engineering and Manufacturing Technology Division (Mmt) Federation of British Engineers Tool Manufacturers Health and Safety Executive Ministry of Defence Society of British Aerospace Companies Ltd. Amendments issued since publication Amd. No. Date of issue CommentsBS6101-6:1990 BSI 11-
5、1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Definitions 1 3 General 1 4 Marking 1 Appendix A Ordering instructions for ball screws 8 Figure 1 Double ball nut (preloaded) with internal return system and end flange 2 Figure 2 Double ball nut (preloaded) with
6、external return system and end flange 4 Figure 3 Single ball nut (preloaded) with internal return system and end flange, and ball screw 6 Table 1 Dimensions of double ball nut (preloaded) with internal return system and end flange 3 Table 2 Load and life ratings for double ball nut (preloaded) with
7、internal return system and end flange 3 Table 3 Dimensions of double ball nut (preloaded) with external return system and end flange 5 Table 4 Load and life ratings for double ball nut (preloaded) with external return system and end flange 5 Table 5 Dimensions of single ball nut (preloaded) with int
8、ernal return system and end flange, and ball screw 7 Table 6 Load and life ratings for single ball nut (preloaded) with internal return system and end flange 7 Publications referred to Inside back coverBS6101-6:1990 ii BSI 11-1999 Foreword This Part of BS6101 has been prepared under the direction of
9、 the Machine, Engineers and Hand Tools Standards Policy Committee. It has been produced in advance of related work being prepared by the International Organization for Standardization (ISO) in order to facilitate discussion between manufacturers and purchasers of machine tool ball screws. There are
10、many types of ball nut. However, this standard only includes the most popularly used types and sizes. Other types and sizes can be added if a demand becomes apparent. A selected range of load and life ratings is also included. Principal dimensions are given for a range of ball screws having single b
11、all nuts. This range is not intended to be exhaustive but reflects a popular range currently in use in the UK market. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a
12、 British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments
13、 incorporated. This will be indicated in the amendment table on the inside front cover.BS6101-6:1990 BSI 11-1999 1 1 Scope This Part of BS 6101 specifies principal dimensions and load and life ratings for ball nuts for use in machine tool ball screws and principal dimensions of a selected range of b
14、all screws. This Part of BS6101 applies to ball nuts with both internal and external return systems. Marking requirements are given. Ordering instructions for ball screws are given in Appendix A. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 D
15、efinitions For the purposes of this Part of BS6101, the definitions given in BS6101-3 apply. 3 General 3.1 Nominal diameters and nominal leads Nominal diameters and nominal leads shall be selected from BS6101-5. 3.2 Dimensions Dimensions shall be as given inTable 1,Table 3 andTable 5. 3.3 Load and l
16、ife ratings Load and life ratings shall be as given in Table 2,Table 4 andTable 6. 4 Marking Ball nuts shall be marked with the following: a) the number and date of this British Standard, i.e. BS6101-6:1990 1) ; b) the name or trademark of the manufacturer; c) the manufacturers serial number or part
17、 number; d) the ball size; e) the pitch and lead. 1) Marking BS6101-6:1990 on or in relation to a product represents a manufacturers declaration of conformity, i.e. a claim by or on behalf of the manufacturer that the product meets the requirements of the standard. The accuracy of the claim is there
18、fore solely the responsibility of the person making the claim. Such a declaration is not to be confused with third party certification of conformity, which may also be desirable.BS 6101-6:1990 2 BSI 11-1999 NOTENuts fitted with wiper seals at each end Figure 1 Double ball nut (preloaded) with intern
19、al return system and end flangeBS6101-6:1990 BSI 11-1999 3 Table 1 Dimensions of double ball nut (preloaded) with internal return system and endflange (seeFigure 1) Table 2 Load and life ratings for double ball nut (preloaded) with internal return system and end flange (see Figure 1) Size Ball diame
20、ter Screw root diameter Number of circuits Spigot diameter d 1tolerance g 6 Spigot length l 2 Outside diameter d 2 P.C.D d 3 Thickness l 3 Fixing bolt size d 4 Nominal diameter of ball screw Lead 3 4 l 1 mm mm mm mm mm mm mm mm mm 25 5 3.175 21.8 90 107 40 10 65 50 15 M6 10 3.968 21.0 150 170 47 10
21、75 60 15 M6 32 5 3.175 28.8 90 107 48 10 75 61 15 M8 10 6.35 25.6 150 170 55 15 90 70 15 M8 40 5 3.175 36.8 90 107 55 15 90 70 15 M8 10 6.35 33.6 150 170 60 15 100 80 15 M8 50 5 3.175 46.8 95 112 70 15 105 85 20 M10 10 6.35 43.6 155 175 75 15 110 90 20 M10 63 5 3.175 59.8 100 117 80 15 122 100 20 M1
22、0 10 6.35 56.6 155 175 85 15 135 110 20 M10 20 9.525 53.4 265 305 95 20 155 125 20 M12 80 10 6.35 73.6 160 180 105 20 155 130 25 M12 20 9.525 70.4 270 310 115 20 175 145 25 M12 100 10 6.35 93.6 160 180 125 20 175 150 25 M12 20 9.525 90.4 270 310 143 25 218 178 25 M16 aSee BS 4500-1 Size Dynamic load
23、 (daN) for life of 1 10 6rev Static load (daN) Nominal diameter of ball screw Lead Number of circuits Number of circuits 3 4 3 4 mm mm 25 5 1210 1 550 2 712 3 473 10 1 410 1 806 2 824 3 617 32 5 1 415 1 813 3 616 4 631 10 2 994 3 835 6 199 7 939 40 5 1 324 1 619 3 791 4 637 10 3 594 4 602 8 265 10 5
24、85 50 5 1 496 1 830 4 875 5 962 10 4 215 5 398 10 848 13 893 63 5 1 683 2 058 6 283 7 684 10 4 045 4 948 11 699 14 309 20 7 428 9 513 18 596 23 816 80 10 4 611 5 639 15 165 18 549 20 8 673 11 108 24 408 31 259 100 10 5 210 6 372 19 498 23 848 20 10 157 13 008 32 544 41 678 NOTE 1The values in the ta
25、ble are based on: conformity factor51.5%, contact angle40 ; i a = i 0.86(see BS6101-1). NOTE 2Preload is adjustable for this type of nut and therefore is not specified.BS 6101-6:1990 4 BSI 11-1999 NOTENuts fitted with wiper seals at each end Figure 2 Double ball nut (preloaded) with external return
26、system and end flangeBS6101-6:1990 BSI 11-1999 5 Table 3 Dimensions of double ball nut (preloaded) with external return system and end flange (see Figure 2) Table 4 Load and life ratings for double ball nut (preloaded) with external return system and end flange (seeFigure 2) Size Ball diameter Screw
27、 root diameter Nut body length Spigot diameter d 1tolerance g 6 c Spigot length Outside diameter P.C.D Thickness Fixing bolt size d 4 Nominal diameter of ball screw Lead 2 2.5 a 2 3.5 b l 2 d 2 d 3 l 3 l 1 mm mm mm mm mm mm mm mm mm mm mm 25 5 3.175 21.8 110 130 52 10 75 62 18 M6 10 3.969 21.0 182 2
28、22 58 10 90 74 18 M6 32 5 3.175 28.8 114 134 60 10 90 74 18 M8 10 6.35 25.6 184 214 75 10 118 95 18 M8 40 5 3.175 36.8 114 134 70 10 100 84 18 M8 10 6.35 33.6 194 234 86 10 125 104 18 M8 50 5 3.175 46.8 124 144 80 10 115 96 20 M10 10 6.35 43.6 194 234 95 10 135 115 20 M10 63 5 3.175 59.8 126 100 10
29、142 120 20 M10 10 6.35 56.6 194 234 112 20 150 130 20 M10 20 9.525 53.4 342 422 124 20 165 144 20 M12 80 10 6.35 73.6 194 234 130 20 170 150 20 M12 20 9.525 70.4 342 422 140 20 185 160 25 M12 100 10 6.35 93.6 194 150 20 190 168 25 M12 20 9.525 90.4 342 422 165 20 220 190 25 M16 a 2 ball return tubes
30、 and 2“ turns of balls in each circuit b 2 ball return tubes and 3“ turns of balls in each circuit c See BS 4500-1 Size Dynamic load (daN) for life of 1 10 6revs Static load (daN) Nominal diameter of ball screw Lead 2 2“ 2 3“ 2 2“ 2 3“ mm mm 25 5 2 420 3 232 5 511 7 360 10 3 198 4 278 6 889 9 201 32
31、 5 2 745 3 667 7 054 9 421 10 6 513 8 698 14 108 18 842 40 5 3 055 4 080 8 817 11 776 10 7 451 9 951 17 634 23 552 50 5 3 337 10 001 10 8 428 11 256 22 043 29 440 63 5 3 702 13 667 10 9 386 12 535 27 333 36 506 20 15 895 21 229 41 661 55 642 80 10 10 639 14 209 35 269 47 104 20 17 785 23 754 51 581
32、68 890 100 10 11 620 43 204 20 20 101 26 846 65 468 87 438 NOTE 1The above values are based on: conformity factor51.5%; contact angle45 ; i a = i 0.86(see BS6101-1). NOTE 2Preload is adjustable for this type of nut and therefore is not specified.BS 6101-6:1990 6 BSI 11-1999 Figure 3 Single ball nut
33、(preloaded) with internal return system and end flange, and ball screwBS6101-6:1990 BSI 11-1999 7 Table 5 Dimensions of single ball nut (preloaded) with internal return system and end flange, and ball screw (seeFigure 3) Table 6 Load and life ratings for single ball nut (preloaded) with internal ret
34、urn system andend flange (seeFigure 3) Size No. of circuits Ball diameters Screwshaft Ball nut Flange Nominal diameter of ball screw Lead Fixing bolt size l s1 l s2 d s1 d s2 l 1 l 2 l 3 d 1 d 2 d 3 d 4 mm mm mm mm mm mm mm mm mm mm mm mm mm 16 5 3 2.38125 500 100 16 14.3 49 10 15 32 56 43 M5 25 5 3
35、 3.175 500 150 25 22.8 51 10 15 40 65 50 M6 1 000 1 250 25 10 3 3.96875 1 000 150 25 22.3 70 10 15 47 75 60 M6 1 250 32 5 4 3.175 1 000 150 32 29.7 82 10 15 48 75 61 M8 1 500 32 10 4 4.7625 1 000 200 32 28.7 140 15 15 55 90 70 M8 1 500 40 5 4 3.175 1 950 200 40 37.8 82 15 15 55 90 70 M8 40 10 4 6.35
36、 1 950 200 40 35.8 140 15 15 60 100 80 M8 50 5 4 3.175 1 950 250 50 47.8 85 15 20 70 110 90 M10 50 10 4 6.35 1 950 250 50 45.8 140 15 20 75 115 95 M10 Size Dynamic load for life of 1 10 6rev Static load Nominal diameter of ball screw Lead mm mm daN daN See note 1 16 5 497 851 25 5 972 1 960 25 10 1
37、155 2 088 32 5 1 846 4 796 See note 2 32 10 2 829 6 326 40 5 1 642 4 770 40 10 3 823 9 009 50 5 1 850 6 095 50 10 5 538 14 554 NOTE 1These values are based on: conformity factor54%; contact angle45 ; i a = i 0.86(see BS6101-1). NOTE 2These values are based on: conformity factor51.5%; contact angle40
38、 ; i a = i 0.86(see BS6101-1). NOTE 3Preload is not adjustable for this type of nut.BS6101-6:1990 8 BSI 11-1999 Appendix A Ordering instructions for ball screwsBS6101-6:1990 BSI 11-1999 Publications referred to BS 4500, ISO limits and fits. BS 4500-1, General, tolerances and deviations. BS 6101, Mac
39、hine tool ball screws. BS 6101-1, Methods of calculating dynamic and static load and life ratings. BS 6101-3, Glossary of terms. BS 6101-5, Specification for nominal diameters and nominal leads. BS 6101-6: 1990 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the indepe
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