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Water pump bearings 
 
Water pump bearings are double row bearings and, in contrast to conventional double row bearings, do not have an inner ring but raceways machined directly into the surface of the shaft. As a result, there is more space available for the rolling elements, giving a higher specific load carrying capacity than that of solutions with conventional single bearings. Furthermore, it is possible in this type of bearing to achieve economical combinations of ball and roller rows. In a small design envelope, this gives a broad range of load carrying capacities.
The use of a common outer ring for two rows of rolling elements prevents misalignment defects, eliminating the risk of undesirable distortion of the bearings.
In water pump bearings, the ends of the shaft normally extend beyond the outer ring on both sides. The length and diameter of these extended sections are matched to the specific application. This results in
a simple, ready-to-fit bearing unit that is primarily used in water pumps for road vehicles.
However, they are not restricted to this application.
Due to the advantages described above, they have a wide range of possible applications.
They can be used, for example, in:
■ fans
■ tension pulleys
■ vane pumps
■ angle grinders.
Since they are not restricted to use in water pumps, water pump bearings are also described in English as Integral shaft bearings.

Designation system

A new designation system has been developed for water pump bearings,  The design of the bearing can be deduced from the designation.
 
1.The letter W stands for “Water pump bearing”.
2.The second letter indicates the design: 
  A: Ball/ball, asymmetrical design
  B: Ball/ball, symmetrical design R: Roller/ball
  T: Roller/ball, three point contact F: Roller/ball, four point contact
3.This figure indicates the number of shaft shoulders:
  0: Smooth shaft
  1: One end of the shaft has a shoulder 
  2: Both ends of the shaft have shoulders
4.Four digit serial number
5.Variant (e.g. different seal material)
QQ截图20190719094451


Design: Roller/Ball   WT,WR,WF Series
图片2
Dimension table · Dimensions in mm
Outer ring diameter Designation Mounting dimensions Previous designation
D









L L1 L2 C dk D11 D22 L11 L22
24 WT01504 80 16,5 36,5 27 12,008
WT01579 86 16 38 32 12,038
30 WR04037 68,39 25 4,5 38,8 15,918 RW306206-LB6G43
WR07038 68,39 25,09 4,5 38,8 15,918 WN2269.H94
WR010222) 69,3 26 4,4 38,9 15,918
WR17059 76 13,96 35,04 27 15,918 12,038 32,74 WNS2299-3
WR170588) 76 16,3 32,7 27 15,918 12,038 30,7 WNS2299-2
WT11546.033) 77,95 15 32,95 30 15,918 12 30,45
WT11640 78,9 15,1 33,8 30 15,918 12,038 31,5
WR14008 78,9 15,2 33,8 29,9 15,918 12 31,5
WR117023) 79,12 14,1 35,12 29,9 15,918 12 32,82
WR173104) 79,26 13,5 35,76 30 15,918 12,038 33,46 WNS2312-2.J7310
WR17014 79,26 13,6 35,76 29,9 15,918 12,038 33,46 WNS2312.J3413
WR11369.23) 79,3 12,1 37,2 29,9 15,918 12 33,2
WR14033 79,8 15,5 41,4 22,9 15,918 12 39,1 RW306212-LB6G43
WF01138 80 14 38 28 15,918
WR17060 81,51 16,18 38,33 27 15,918 12,038 36,03 WNS2320
WR11072.1 81,7 13,7 34 34 15,918 12,038 33,4
WT114223) 82 14 34 34 15,918 12,038 32,1
WT11422.02 82 14 34 34 15,918 12,038 32,1
WT116493) 84,3 20,8 33,5 30 15,918 12,008 31,5
WR17011 84,63 17,27 40,36 27 15,918 12,038 38,06 WNS2333
WR11515.037) 85 17 34,2 33,8 15,918 12,038 33
WR17061 85,1 14,16 43,94 27 15,918 12,038 41,64 WNS2335
WR17056 85,82 14,5 41,32 30 15,918 12,038 39,02 WNS2337-1
WR01345 86 21 5 60 15,918
WF11137.4 86,5 13,5 34,1 38,9 15,918 12,038 32,45
30 WF11137.63) 86,5 13,5 34,2 38,8 15,918 12,038 32,2
WR17564 86,7 19,31 40,39 27 15,918 12,038 38,09
WF11293.1 86,8 13,3 41,5 32 15,918 12,038 39,9
WR17008 87 17,27 42,73 27 15,918 12,038 40,43 WNS2342-3
WT116213) 87,3 20,8 36,5 30 15,918 12,008 34,3
WR14012 87,5 13,5 38 36 15,918 12 35,7 RW306211-LBF6G43
WR14012.013) 87,5 13,5 38 36 15,918 12 35,7 IHA-RW306211-LCF5F4M5G75
WR170621) 88,5 19,24 42,26 27 15,918 12,038 39,96 WNS2348-5
WF05112 88,75 19,25 33 36,5 16 F-93024
WR17002 89,75 17,34 38,41 34 15,918 12,038 36,11 WNS2353-3
WR11036.1 90 18 33,1 38,9 15,007 12,038 32
WR172883) 91 13,85 43,15 34 15,918 12 40,15 WNS2358.J3848
WF115863)7) 91,5 11,6 34,2 45,7 15,918 12,038 32,2
WF11284.033) 91,5 13,3 34,2 44 15,918 12,038 32,2
WR173091) 92,15 13,19 40,16 38,8 15,918 12,038 37,86
WR17004 92,5 15 38,7 38,8 15,918 12 36,4 WN2364-7S.H94
WR24032 92,5 16,5 37,2 38,8 15,918 12 12 14 34,9 RCHL-RW306201-LB6G43
WR11368.23) 93,9 17,4 37,6 38,9 15,918 12 35
WR17119 93,95 14,99 40,16 38,8 15,918 12,038 37,86 WN2369S
WF115513) 94 17 38,1 38,9 15,918 12,008 35,9
WF01011 94,5 15,7 39,9 38,9 15,008
WR05107 94,5 15,7 39,9 38,9 15,008 F-110207.2
WT11075 94,5 14,5 41,1 38,9 15,008 12 40
WR17280 94,9 18,3 46,6 30 15,918 12 33,5
WR11599.013) 94,9 18,3 46,7 29,9 15,918 12 33,5
WR17040 95,45 14,33 42,32 38,8 15,918 12,038 40,02 WN2375-4S
WF11131 96,3 14,6 47,9 33,8 15,918 12,038 46,4
WR11037.1 96,4 18 39,5 38,9 15,008 12,067 36,6

1)  Special shaft
2) Flinger sleeve
3) R-SAFE seal
4) Rotary shaft seal
5) No seal
6) Outer ring with locating hole
7) Special outer ring

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