Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF W 638/4 XR-2RS1

W 638/4 XR-2RS1

Dimensions

d		4	mm
D		10	mm
B		4	mm
d₁	≈	5.9	mm
D₂	≈	8.8	mm
D₃		11.6	mm
C		0.8	mm
r_1,2	min.	0.15	mm

Abutment dimensions

d_a	min.	5.6	mm
d_a	max.	5.8	mm
r_a	max.	0.2	mm

Calculation data

Basic dynamic load rating	C	0.553	kN
Basic static load rating	C₀	0.245	kN
Fatigue load limit	P_u	0.011	kN
Reference speed		0	r/min
Limiting speed		36000	r/min
Calculation factor	k_r	0.02
Calculation factor	f₀	12.3

Mass

Mass bearing

0.0015

Model Number: W 638/4 XR-2RS1
Inner Diameter：4mm Outer Diameter：10mm Width：4mm
Reference speed:36000 r/min Limiting speed:0 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2026-04-16
Application:powder metallurgy,municipal machinery,air shower etc,industrial skin care,hydraulic actuator,power source,flow control valve,turret industry,test equipment,axle lathe,Industrial equipment
Similar models:W 638/2 X-2Z W 63804-2RZ W 638/3 R-2Z W 638/4-2RS1 638/5-2Z W 63802-2RZ W 63805-2RZ W 63802 R SAF 22638 x 6.7/8 TLC W 638/2.5-2Z
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