SKF W638/4XR-2Z Deep groove ball bearings,SKF W 638/4 XR-2Z Ball bearings-BEARINGPOWER Co.,Ltd.
Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF W 638/4 XR-2Z

W 638/4 XR-2Z

Dimensions
d 4mm
D 10mm
B 4mm
d1≈5.9mm
D2≈8.8mm
D3 11.6mm
C 0.8mm
r1,2min.0.15mm
Abutment dimensions
damin.5.6mm
damax.5.8mm
ramax.0.2mm
Calculation data
Basic dynamic load ratingC 0.553kN
Basic static load ratingC0 0.245kN
Fatigue load limitPu 0.011kN
Reference speed  130000r/min
Limiting speed  63000r/min
Calculation factorkr 0.02 
Calculation factorf0 12.3 
Mass
Mass bearing  0.0015kg
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Hot number： 21x35x7 CRW1 R 30003 47395 500 VE R 7006 CB/HCP4A D/W R1 D/W R1810-2ZS NCF 1860 V NUP 205 ECP SSAFS 23048 KAT x 8.7/16 SYJ 45 KF T4DB 160 TUJ 512 TUWK 50 LTA W 627-2RS1

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