Water Pump bearings
Ball-to-ball Type (II)

Boundary dimensions (mm) Mass (kg) FAG No. NSK No.
K L D1 D2 A B C S1 S2
38.1






54.1






15.918






15.918
15.918

15.977
15.977
15.977

18.961
132.1
161.9

139.7
143.5
152.4

136.8
29.9
35.6

35.6
30.8
35.6

35.9
48.2
72.4

50.1
89.5
62.9

46.7
12.07
15.1

15.4
12.24
15.1

12.1
43.2
70.05

47.75
50.5
80.53

43.2
0.46
0.55

0.48
0.50
0.53

0.47
WK2520
WK2637

WK6550B
WK6564-2R
WK66000B

WK2537-1
885852
885858

885821
885862B
885844

855737
38.1








54.1








18.961








18.961
18.961
18.961

15.918
15.918
15.918

15.938
15.977
127.5
135.7
143.3

142
143.5
146.1

154.3
143.3
30
31.6
35.6

31.8
30.3
36.3

30
35.5
42.3
49.9
53.8

56.2
59
55.7

70.6
53.8
14.1
-
-

-
11.9
29.9

8.2
-
38.9
46.7
49.1

51.9
50.6
51.2

56.8
49.4
0.48
0.47
0.50

0.49
0.50
0.51

0.53
0.49
WK28501-3
WK2534
WK2564

WK2559-2
WK2564-4
WK2575-4

WK2607A
WK6564
885869
885735
885815A

885815
88582B
885760

885795SC
885815A