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NTN W 638/4-2Z

Deep groove ball · 2Z shield
Ø4Ø94
Bore
4 mm
Outside dia
9 mm
Width
4 mm
Dynamic C
0.4 kN
Static C0
0.1 kN
Speed grease
140,000 rpm
Speed oil
70,000 rpm
Clearance
CN (Normal)
Precision
ABEC-1 (P0)
Weight
0.002 kg
Evidence

catalog-search · eligible · eval ship · deterministic executor · partsbrain pull 2026-09-08

Interchange family — 8 records

Part numberManufacturerBore×OD×WidthC
W 638/4-2ZKOYO (JTEKT)4×9×40.4 kN
W 638/4-2ZINA (Schaeffler)4×9×40.4 kN
W 638/4-2ZMinebeaMitsumi (NMB)4×9×40.4 kN
W 638/4-2ZNachi Fujikoshi4×9×40.4 kN
W 638/4-2ZFAG (Schaeffler)4×9×40.4 kN
W 638/4-2ZTimken4×9×40.4 kN
W 638/4-2ZRBC Bearings4×9×40.4 kN
W 638/4-2ZPeer Bearing4×9×40.4 kN