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  Deep groove ball bearings

Part Number

d - Bore

D - Outer Diameter

B - Width

Cr - Dynamic Radial Rating

Cor - Static Radial Rating

Reference speed

Limiting speed

W 61907-2RS1 35 mm 55 mm 10 mm 9.36 N 7.65 N - 7500 rpm
W 61907 R-2Z 35 mm 55 mm 10 mm 9.36 N 7.65 N 26000 rpm 13000 rpm
W 61907 R 35 mm 55 mm 10 mm 9.36 N 7.65 N 26000 rpm 16000 rpm
W 61907 35 mm 55 mm 10 mm 9.36 N 7.65 N 26000 rpm 16000 rpm
W 61906-2Z 30 mm 47 mm 9 mm 6.24 N 5 N 30000 rpm 15000 rpm
W 61906-2RZ 30 mm 47 mm 9 mm 6.24 N 5 N 30000 rpm 15000 rpm
W 61906-2RS1 30 mm 47 mm 9 mm 6.24 N 5 N - 8500 rpm
W 61906 R-2Z 30 mm 47 mm 9 mm 6.24 N 5 N 30000 rpm 15000 rpm
W 61906 R 30 mm 47 mm 9 mm 6.24 N 5 N 30000 rpm 19000 rpm
W 61906 30 mm 47 mm 9 mm 6.24 N 5 N 30000 rpm 19000 rpm
W 61905-2Z 25 mm 42 mm 9 mm 6.05 N 4.5 N 34000 rpm 17000 rpm
W 61905-2RZ 25 mm 42 mm 9 mm 6.05 N 4.5 N 34000 rpm 17000 rpm
W 61905-2RS1 25 mm 42 mm 9 mm 6.05 N 4.5 N - 10000 rpm
W 61905 R-2Z 25 mm 42 mm 9 mm 6.05 N 4.5 N 34000 rpm 17000 rpm
W 61905 R 25 mm 42 mm 9 mm 6.05 N 4.5 N 34000 rpm 22000 rpm
W 61905 25 mm 42 mm 9 mm 6.05 N 4.5 N 34000 rpm 22000 rpm
W 61904-2Z 20 mm 37 mm 9 mm 5.53 N 3.65 N 43000 rpm 20000 rpm
W 61904-2RZ 20 mm 37 mm 9 mm 5.53 N 3.65 N 43000 rpm 20000 rpm
W 61904-2RS1 20 mm 37 mm 9 mm 5.53 N 3.65 N - 12000 rpm
W 61904 R-2Z 20 mm 37 mm 9 mm 5.53 N 3.65 N 43000 rpm 20000 rpm