This standard replaces JB 3232-83 and ZB J11 014-88. This standard specifies the structural type, code method, basic dimensions and technical requirements of needle roller bearings without inner ring for cross-axis universal joints. This standard is applicable to needle roller bearings for universal joints. It is provided for production and inspection by manufacturers and selection and acceptance by users. JB/T 3232-1994 Universal Joint Needle Roller Bearings JB/T3232-1994 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Universal Joint Needle Roller Bearings
1 Subject Content and Scope of Application
JB/T 3232 94
JB 322
This standard specifies the structural type, code method, basic dimensions and technical conditions of cross-axis universal joint needle roller bearings without inner ring (hereinafter referred to as universal joint needle roller bearings).
This standard applies to universal joint needle roller bearings. It is provided for production and inspection by manufacturers and selection and acceptance by users. Cited standards
GB307.3 General technical requirements for rolling bearings
GB309 Rolling bearings needle rollers
GB 1801
GB 4199
GB 7811
Tolerances and fits Dimensions up to 500mm Tolerance zones and fits for holes and shafts Definitions of rolling bearing tolerances
Rolling bearing parameter symbols
JB/T3034
JB/T3574
ZBJ11 020
3 Symbols
Rolling bearing oil seals Rust-proof packaging
Rolling bearing product marking
Inspection rules for rolling bearings and their commodity parts Except for the following symbols, the remaining symbols and definitions shall comply with the provisions of GB7811 and GB4199. F: Inner diameter of needle roller group
Fwu: Minimum single inner diameter of needle roller group
△Fwmin: Minimum single inner diameter deviation of needle roller group (difference between Fwmin and Fw)B, BI: Nominal width of bearing
A or AB: Single width deviation of bearing
b: Nominal width of outer ring
N): Single width deviation of outer ring
be: Bottom thickness of outer ring
A: Single bottom thickness deviation of outer ring
b1: Distance between inner bottom surface of outer ring and retaining groove△m: Single distance deviation between inner bottom surface of outer ring and retaining grooveH: Retaining groove width
C: Outer ring bottom plate groove width
L: Outer ring bottom plate groove depth
4 Bearing code method
The code of universal joint needle roller bearing consists of front code, basic code and post-codes Approved by the Ministry of Machinery Industry on July 26, 1994
Implementation on July 1, 1995
4.1 Pre-codes
JB/T3232-94
The pre-codes are represented by Chinese phonetic letters written by people to indicate the type of universal joint needle roller bearings: W universal joint needle roller bearings
WN internal card universal joint needle roller bearings
WW external card universal joint needle roller bearings
WY pressure plate universal joint needle roller bearings
4.2 Basic codes
The basic code is represented by four Arabic numerals, the first two digits indicate the inner diameter F of the needle roller group (rounded off according to the digital rounding rules) in millimeters, and the last two digits indicate the bearing width B (rounded off according to the digital rounding rules) in millimeters (no units are marked). 4.3 Rear code
Rear arm code is expressed in Latin letters, see Table 1. Table 1
Rear arm code
Code example: WN
Marking example;
Universal joint needle roller bearing with stamped cover
Universal joint needle roller bearing with retaining ring
Universal joint needle roller bearing with right-angle lip metal cover sealing ring Universal joint needle roller bearing with inner frame sealing ring Universal joint needle roller bearing (without sealing ring)
Universal joint needle roller bearing with Y-type sealing ring
Universal joint needle roller bearing with U-type sealing ring
Internal structure change
External structure change|| tt||Universal joint needle roller bearing outer ring has flange
With retaining ring
Width is 26 (mm)
Inner diameter of needle roller group is 20 (mm)
Internal cardan universal joint needle roller bearing
Rolling bearing WN2026TJB/T3232-94
5 Basic dimensions
5.1 Internal cardan universal joint needle roller bearing with retaining ring (see Figure 1) The basic dimensions of internal cardan universal joint needle roller bearing with retaining ring are according to Table 2.420
Bearing code
WN 1519 T
WN 1621 T
WN 1821 T
WN 2026T
WN 2226 T
WN 2532 T
WN 2827 T
WN 3232 T
WN3434T
WN 3634 T
JB/T3232-94
WN-..T type
5.2 Pressure plate type universal joint needle roller bearings (see Figure 2 and Figure 3). Basic dimensions are as per Table 3. Figure 2 WY type
Figure 3 WYPP type
2533
WY2832
WY 3232
WY 3233
WY 343-1
WY 3631
WY4034
WY1540
WY5048
WY.·PP type
WYB3PP
WY 2026 PP
WY 2226 Pp
WY 2227 Pp
WY2528PP
WY253:;Pp
wY 2832 PP
WY3232PP
WY3233Pp
WY3431PP
WY 3634 PP
WY 1034PP
WY4540PP
WY 5048 PP
JB/T3232
5.3W universal joint needle roller bearing (see Figure 1), basic dimensions according to Table 4. 94
Figure 4W type
Auxiliary bearing code
W 1311
5.4 Universal joint needle roller bearing with right-angle lip metal cover seal (see Figure 5, Figure 6) Size
5.4.1 The basic size of the internal cardan type universal joint needle roller bearing with right-angle lip metal cover seal (see Figure 5) is as per Table 5. External cardan type universal joint needle roller bearing with right angle lip metal cover seal (see Figure 6) basic dimensions are in accordance with Table 6. 5.4.2
Figure 5WNRS type
Bearing code
WN 1319 RS
WN 1424 RS
WN 1518 RS
WN 1620 RS
WN 1721 RS
WN 1722 RS
WN 1723 RS
WN 1819 RS
WN 1822 RS
WN 2025 RS
Bearing code
WW 1013 RS
WW 1116 RS
WW 1117 RS
WW1214RS
WW 1216 RS
WW 1217 RS
WW 1314 RS
WW 1316 RS
WW 1317 RS
WW 1421 RS
JB/T 3232--94
Figure 6 WWRS type
Bearing code
WW 1516 RS
WW 1717 RS
WW 1721 RS
WW 1821 R5
WW 2223 RS
WW 2319 RS
WW 2929 RS
WW 3236RS
5.5 Universal joint needle roller bearing with U-shaped sealing ring JB/T3232—94
Continued Table 6
5.5.1 Internal cardan type universal joint needle roller bearing with U-shaped sealing ring (see Figure 7) basic dimensions are as per Table 7mm
5.5.2 External cardan type directional joint needle roller bearing with U-shaped sealing ring (see Figure 8) basic dimensions are as per Table 8. Figure 7
Bearing code
WN 1319 PP2
WN 1422 PP2
WN 1521 PP2
WN 1621 PP2
WN 1721 PP2
WN 2532 PP2
WN 2533 Pp2
WNPP2 type
WW.·PP2 type
Bearing code
WW 1115 PP2
WW1316PP2
WW 1417 PP2
WW 1518 PP2
WW 1519PP2
WW 1618 PP2
WW 1719 PP2
WW1721PP2
WW 2024 PP2
WW 2124 PP2
WW 2325 PP2
WW 2729 PP2
6 Technical requirements
6.1 Materials and hardness
6.1.1 Materials
JB/T3232—94
The outer ring and needle roller of universal joint needle roller bearing are made of GCr15 steel. The outer ring is also allowed to be made of other bearing steels. 6.1.2 Hardness
a. When the outer ring and needle roller are made of GCr15 steel, the hardness value should be HRC61~65. B
b. When the outer ring is made of 15Mn and other carburizing steels, the hardness value and heat treatment quality shall be specified by the competent department of the manufacturer. 6.2 Surface roughness of the mating surface and outer bottom surface of universal joint needle roller bearing The surface roughness value of the outer cylindrical surface and outer bottom surface of the outer ring of universal joint needle roller bearing is R. 1.25μm. 6.3 Tolerance value
6.3.1 The tolerance of the outer drawing shall be in accordance with the provisions of Table 9. Table 9
Without retaining ring
or without
Universal joint needle roller bearing width deviation shall be in accordance with the provisions of Table 10. Upper deviation
JB/T3232-
Upper deviation
6.3.3The minimum single-internal diameter deviation of the needle roller assembly shall be in accordance with the provisions of Table 11. Table 11
6.3.4Assembly chamfer tolerance
Upper deviation
Lower deviation
The assembly chamfer deviation of universal joint needle roller bearing shall be in accordance with the provisions of Table 12. Table 12
Nominal chamfer
Total clearance of needle roller circumference
Total clearance of needle roller circumference shall not be greater than 0.5mm.
Coordinate deviation of radial chamfer
6.5The technical requirements of needle rollers shall comply with the provisions of G3 grade needle rollers in GB309. 10
AraAnie
Axial chamfer coordinate deviation
6.6 The tolerance of the joint between the shaft journal and the inner diameter of the needle roller group shall comply with the provisions of h6 in GB1801. 6.7 Other requirements
6.7.1 The surface of the parts of the universal joint needle roller bearing shall not be cracked, sharp edges or burrs. 6.7.2 The universal joint needle roller bearing shall rotate flexibly and the needle shall not be stuck. For inseparable universal joint needle roller bearings, the needle shall not be allowed to fall off, and its cover, retaining ring, sealing ring or felt seal shall not be loose or fall off. 7 Inspection methods and inspection rules
7.1 The total clearance of the needle roller circumference shall be checked with a feeler gauge. 7.2 The minimum single-to-single inner diameter deviation of the needle roller group shall be checked with a plug gauge or instrument. 7.3: Measurement of radial runout of outer ring of finished universal joint needle roller bearings 7.3.1 The measurement method is shown in Figure 9. The outer ring must rotate for more than one circle 126
JB/T3232
7.3.2 For W-type universal joint needle roller bearings, it is allowed to replace the measurement of the outer ring raceway outer surface thickness variation (Kc), needle roller group batch diameter variation (VvwL) and needle roller single radial plane inner diameter variation (Vvwp). At this time: Kea-Ke+Vpwl.+Vpwpmax7.4 Universal joint needle roller bearings shall be sampled and inspected in accordance with the provisions of ZBJ11020, and the sample size shall be drawn according to the general inspection level I. The acceptable quality level AQL value of the main item is 1.5, and the secondary item is 4.0. The sampling inspection items of finished bearings are shown in Table 13. Table 13 Inspection items
Main inspection items
Outer ring outer diameter deviation and variation
(Ay Vpp.VDmp)
Minimum single-inner diameter deviation of needle roller set
(△Fwmn)
Outer ring bottom thickness deviation and distance deviation between outer ring inner bottom surface and retaining groove (4b0s46b)
Radial runout Ke of universal joint needle roller bearing outer ring Assembly chamfer tolerance
Total clearance of needle roller circumference
8 Marking, rust prevention and packaging
The marking of universal joint needle roller bearing shall comply with JB/T35 74 provisions Minor inspection items
Universal joint needle roller bearing nominal width deviation
(△Ba.ABi.)
Outer ring width deviation△b
Surface roughness of mating surface and outer bottom surface Appearance quality
Marking and oil seal anti-rust packaging
Universal joint needle roller bearings that have passed the inspection should be rust-proofed and inner packaged according to the provisions of JB/T3034, and the outer package should be in accordance with the requirements of GB307.3. The markings on the packaging should be complete and clear. 437
Comparison of new and old bearing codes shall be in accordance with the provisions of Table A1. New
Bearing name
Directional joint needle roller bearing
Universal joint with stopper
Needle roller bearing
Pressure plate type universal joint
Needle roller bearing
Right angle lip metal
Cover seal ring universal
Directional joint needle roller bearing
Universal joint needle roller with U-shaped seal
Additional instructions:
Type codewww.bzxz.net
Internal card type
External card type
Internal card type
External card type
Internal card type
External card type
WN.RS
External card type
WNPP2
External card type
JB/T 3232—94
Appendix A
Comparison of old and new bearing codes
(reference)
WN 1519 T
WY2026
WN 1424 RS
WW 1013 RS
WN 1319 PP2
WW 1115 PP2
This standard is proposed by the National Technical Committee for Standardization of Rolling Bearings. Width series
Series code
This standard is drafted by the Luoyang Bearing Research Institute of the Ministry of Machinery Industry. The drafter of this standard is Ma Suqing.
Factory diameter series
Series code
59049/10
57049/15
58049/201 The surface of the parts of the universal joint needle roller bearings shall not have cracks, sharp edges or burrs. 6.7.2 Universal joint needle roller bearings shall rotate flexibly and needle jamming is not allowed. For inseparable universal joint needle roller bearings, needle drop is not allowed, and the cover, retaining ring, sealing ring or felt seal shall not be loose or fall off. 7 Inspection methods and inspection rules
7.1 Check the total clearance of the needle roller circumference with a feeler gauge. 7.2 Check the minimum single-to-single inner diameter deviation of the needle roller group with a plug gauge or instrument. 7.3: Measurement of radial runout of outer ring of finished universal joint needle roller bearings 7.3.1 The measurement method is shown in Figure 9. The outer ring must rotate for more than one circle 126
JB/T3232
7.3.2 For W-type universal joint needle roller bearings, it is allowed to replace the measurement of the outer ring raceway outer surface thickness variation (Kc), needle roller group batch diameter variation (VvwL) and needle roller single radial plane inner diameter variation (Vvwp). At this time: Kea-Ke+Vpwl.+Vpwpmax7.4 Universal joint needle roller bearings shall be sampled and inspected in accordance with the provisions of ZBJ11020, and the sample size shall be drawn according to the general inspection level I. The acceptable quality level AQL value of the main item is 1.5, and the secondary item is 4.0. The sampling inspection items of finished bearings are shown in Table 13. Table 13 Inspection items
Main inspection items
Outer ring outer diameter deviation and variation
(Ay Vpp.VDmp)
Minimum single-inner diameter deviation of needle roller set
(△Fwmn)
Outer ring bottom thickness deviation and distance deviation between outer ring inner bottom surface and retaining groove (4b0s46b)
Radial runout Ke of universal joint needle roller bearing outer ring Assembly chamfer tolerance
Total clearance of needle roller circumference
8 Marking, rust prevention and packaging
The marking of universal joint needle roller bearing shall comply with JB/T35 74 provisions Minor inspection items
Universal joint needle roller bearing nominal width deviation
(△Ba.ABi.)
Outer ring width deviation△b
Surface roughness of mating surface and outer bottom surface Appearance quality
Marking and oil seal anti-rust packaging
Universal joint needle roller bearings that have passed the inspection should be rust-proofed and inner packaged according to the provisions of JB/T3034, and the outer package should be in accordance with the requirements of GB307.3. The markings on the packaging should be complete and clear. 437
Comparison of new and old bearing codes shall be in accordance with the provisions of Table A1. New
Bearing name
Directional joint needle roller bearing
Universal joint with stopper
Needle roller bearing
Pressure plate type universal joint
Needle roller bearing
Right angle lip metal
Cover seal ring universal
Directional joint needle roller bearing
Universal joint needle roller with U-shaped seal
Additional instructions:
Type code
Internal card type
External card type
Internal card type
External card type
Internal card type
External card type
WN.RS
External card type
WNPP2
External card type
JB/T 3232—94
Appendix A
Comparison of old and new bearing codes
(reference)
WN 1519 T
WY2026
WN 1424 RS
WW 1013 RS
WN 1319 PP2
WW 1115 PP2
This standard is proposed by the National Technical Committee for Standardization of Rolling Bearings. Width series
Series code
This standard is drafted by the Luoyang Bearing Research Institute of the Ministry of Machinery Industry. The drafter of this standard is Ma Suqing.
Factory diameter series
Series code
59049/10
57049/15
58049/201 The surface of the parts of the universal joint needle roller bearings shall not have cracks, sharp edges or burrs. 6.7.2 Universal joint needle roller bearings shall rotate flexibly and needle jamming is not allowed. For inseparable universal joint needle roller bearings, needle drop is not allowed, and the cover, retaining ring, sealing ring or felt seal shall not be loose or fall off. 7 Inspection methods and inspection rules
7.1 Check the total clearance of the needle roller circumference with a feeler gauge. 7.2 Check the minimum single-to-single inner diameter deviation of the needle roller group with a plug gauge or instrument. 7.3: Measurement of radial runout of outer ring of finished universal joint needle roller bearings 7.3.1 The measurement method is shown in Figure 9. The outer ring must rotate for more than one circle 126
JB/T3232
7.3.2 For W-type universal joint needle roller bearings, it is allowed to replace the measurement of the outer ring raceway outer surface thickness variation (Kc), needle roller group batch diameter variation (VvwL) and needle roller single radial plane inner diameter variation (Vvwp). At this time: Kea-Ke+Vpwl.+Vpwpmax7.4 Universal joint needle roller bearings shall be sampled and inspected in accordance with the provisions of ZBJ11020, and the sample size shall be drawn according to the general inspection level I. The acceptable quality level AQL value of the main item is 1.5, and the secondary item is 4.0. The sampling inspection items of finished bearings are shown in Table 13. Table 13 Inspection items
Main inspection items
Outer ring outer diameter deviation and variation
(Ay Vpp.VDmp)
Minimum single-inner diameter deviation of needle roller set
(△Fwmn)
Outer ring bottom thickness deviation and distance deviation between outer ring inner bottom surface and retaining groove (4b0s46b)
Radial runout Ke of universal joint needle roller bearing outer ring Assembly chamfer tolerance
Total clearance of needle roller circumference
8 Marking, rust prevention and packaging
The marking of universal joint needle roller bearing shall comply with JB/T35 74 provisions Minor inspection items
Universal joint needle roller bearing nominal width deviation
(△Ba.ABi.)
Outer ring width deviation△b
Surface roughness of mating surface and outer bottom surface Appearance quality
Marking and oil seal anti-rust packaging
Universal joint needle roller bearings that have passed the inspection should be rust-proofed and inner packaged according to the provisions of JB/T3034, and the outer package should be in accordance with the requirements of GB307.3. The markings on the packaging should be complete and clear. 437
Comparison of new and old bearing codes shall be in accordance with the provisions of Table A1. New
Bearing name
Directional joint needle roller bearing
Universal joint with stopper
Needle roller bearing
Pressure plate type universal joint
Needle roller bearing
Right angle lip metal
Cover seal ring universal
Directional joint needle roller bearing
Universal joint needle roller with U-shaped seal
Additional instructions:
Type code
Internal card type
External card type
Internal card type
External card type
Internal card type
External card type
WN.RS
External card type
WNPP2
External card type
JB/T 3232—94
Appendix A
Comparison of old and new bearing codes
(reference)
WN 1519 T
WY2026
WN 1424 RS
WW 1013 RS
WN 1319 PP2
WW 1115 PP2
This standard is proposed by the National Technical Committee for Standardization of Rolling Bearings. Width series
Series code
This standard is drafted by the Luoyang Bearing Research Institute of the Ministry of Machinery Industry. The drafter of this standard is Ma Suqing.
Factory diameter series
Series code
59049/10
57049/15
58049/20
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