Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF W 637/4 XR-2Z

W 637/4 XR-2Z

Dimensions

d		4	mm
D		8	mm
B		3	mm
d₁	≈	5	mm
D₂	≈	7.4	mm
D₃		9.2	mm
C		0.6	mm
r_1,2	min.	0.1	mm

Abutment dimensions

d_a	min.	4.8	mm
d_a	max.	4.9	mm
r_a	max.	0.1	mm

Calculation data

Basic dynamic load rating	C	0.225	kN
Basic static load rating	C₀	0.072	kN
Fatigue load limit	P_u	0.003	kN
Reference speed		150000	r/min
Limiting speed		75000	r/min
Calculation factor	k_r	0.02
Calculation factor	f₀	7.2

Mass

Mass bearing

0.00061

Model Number: W 637/4 XR-2Z
Inner Diameter：4mm Outer Diameter：8mm Width：3mm
Reference speed:75000 r/min Limiting speed:150000 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2025-12-09
Application:wall industry,printing equipment,ventilation fans,tire industry,pneumatic Pump,hook,ignition system,equipment,die casting mold,hinge industry,organic raw materials
Similar models:W 637/8-2Z W 637/8 R-2ZS BC2B 326379/HA4 W 637/5 X-2Z W 637/3-2Z W 637/8 X 6379/K-6320 W 637/5 XR-2Z W 637-2RS1 W 637/2-2Z
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