NTN 638/4-2Z

Name: NTN 638/4-2Z
Brand: NTN
SKU: 638/4-2Z

Deep groove ball · 2Z shield

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

Part number	Manufacturer	Bore×OD×Width	C
638/4-2Z	FAG (Schaeffler)	4×9×4	0.4 kN
638/4-2Z	Timken	4×9×4	0.4 kN
638/4-2Z	RBC Bearings	4×9×4	0.4 kN
638/4-2Z	Peer Bearing	4×9×4	0.4 kN
638/4-2Z	KOYO (JTEKT)	4×9×4	0.4 kN
638/4-2Z	INA (Schaeffler)	4×9×4	0.4 kN
638/4-2Z	MinebeaMitsumi (NMB)	4×9×4	0.4 kN
638/4-2Z	Nachi Fujikoshi	4×9×4	0.4 kN