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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 (continued) · Dimensions in mm
Outer ring diameter Designation Mounting dimensions Previous designation
D









L L1 L2 C dk D11 D22 L11 L22
30 WR051081)2) 121,9 37,3 45,7 38,9 15,918 F-44018 AR-C
WR010086) 125,25 17,75 55,5 52 15,008
WR05105 127,43 22 66 39 15,918 F-110023C
WR17007 127,55 23,46 65,29 38,8 15,918 12,038 48,84
WR11360.1 127,8 23,3 65,6 38,9 15,918 12,04 48,6
WR07051 139 23,11 77,09 38,8 15,918 WN2547
WF11032.11)6) 142,65 56,25 47,5 38,9 16 15,008 52,15
WR01019 144 46 38 60 15,918
WR01429.2 147,11 26 82,21 38,9 15,918 WR0 1429.2
WR17279 147,11 26 82,31 38,8 15,918 12,038 53
34 WF21222 98 17 42,1 38,9 17,008 15,918 12,038 16 40,6
WT11593 104,08 19 46,18 38,9 17,008 15,918 43,8
WT11628 104,9 17,5 48,6 38,8 17,008 12,038 46
WT11590 111 21 38 52 17,008 12 35,5
WF21211.1 111 24 40 47 17,008 15,008 12,055 23 39
WT11079 120,5 28,8 44,7 47 17,008 12,038 39
35 WR14007 85,5 15,5 40,1 29,9 18 12 37,8 RCHL-RW357013-LC5G68
WR24035 92,5 16,5 37,2 38,8 18 15,918 12 15 34,9 RW357002-LB6G43
WR24034 95 17,5 38,7 38,8 18 12 12 15 36,4 RCHL-RW357004-LC5G43
WR24034.013) 95 17,5 38,7 38,8 18 12 12 15 36,4 RCHL-RW357004-LC5F4L5G68
WR24006 96 26 40,1 29,9 18 15,918 12 7 37,8 RCHL-RW357006-LC5G68
WR24025 100,4 16,5 45,1 38,8 18 15,918 12 14,5 42,8 RCHL-RW357001-LD5LC5G75
WR24038 103,2 26,4 38 38,8 18 15,918 12 24,5 35,7 RCHL-RW357003-LC5G75
WR14026.01 135,7 18,8 60,9 56 18 12,038 58,6
36 WF11067 101,5 17 40,5 44 16,95 12,038 38,5
WF211412) 116,45 19,7 57,75 39 20 16 16 18,75 54
WF21088.1 122,5 29 41,5 52 17,008 15,008 12,055 28 40,85
WF211432) 124,7 27 45,7 52 20 15,008 12,055 26,8 42,8
WR21112 125,5 25,25 48,25 52 20 15,002 15,002 22,5 44,5
WR21173 125,5 25,25 48,25 52 20 15,002 15,002 22,5 44,5
WF17053 126 21 53,1 52 20 15,01 51,2 WNS2496
WF21089 130,7 33 45,7 52 17,008 15,008 12,055 32 43,8
WF21544 148 23 73 52 17,008 15,008 12,038 22 71
38,1 WR11078.1 73,1 26,1 47 18,961 15,918 25
WR15088 74,5 25,5 2 47 18,961 15,918 24 F-110607-20
WR15114 79,9 24 1,9 54 18,961 15,918 20,3 F-110483
WR05114.01 79,9 24 1,8 54,1 18,961
F-110483.1
WR15114.021) 79,9 24 1,8 54,1 18,961 15,918 20,3 F-110483.3
WR07017 90,88 33,32 3,58 54 18,961 WKN2357.L198
WR17337 114,9 17,9 43,02 54 18,961 12,038 40,72
WR17399 114,93 21,99 38,96 54 18,961 15,918 36,66 WKN2452-2
WR17018 115,33 23,47 37,88 53,98 18,961 12,038 35,58 WKN2454D
WR27010 118,15 19 51,15 48 18,961 15,918 12,038 17,54 48,85 WNS2465-1
WR07100 119,36 61,8 3,58 54 18,961 WKN2469
WR17019 120,5 25,8 40,72 54 18,961 15,918 38,42 WKN2474-2
WR17321 121,8 23,47 44,35 54 18,961 12,038 42,05
WR15121 123,5 23,9 45,5 54,1 18,961 15,906 41,18 F-45981
WR151161) 124,87 22 48,8 54,1 18,961 15,918 45,3 F-110404
WR17020 125,98 28 44 54 18,961 12,038 41,7 WKN2495D
WR17285 126 30,52 41,5 54 18,961 12,038 39,2
WR24023 127,36 18 68,26 41,1 18,961 15,918 12,038 15,5 65,96 RCHL-RW387404A-LC5G68
WR17021 128 18 56,02 54 18,961 15,918 53,72 WKN2503
WR17022 128,88 24,1 50,8 54 18,961 12,038 48,5 WKN2507-2D.TJ3311
WR15120 131,6 24 53,75 53,9 18,961 15,906 49,3 F-45646
WR27023 134,62 31,74 48,9 54 18,961 15,918 15,918 7,1 46,6 WKN2530
WR17025 134,87 30,09 50,8 54 18,961 15,918 48,5 WKN2531-3

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