Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF W 638/9-2Z

W 638/9-2Z

Dimensions

d		9	mm
D		17	mm
B		6	mm
d₂	≈	10.7	mm
D₂	≈	15.2	mm
r_1,2	min.	0.2	mm

Abutment dimensions

d_a	min.	10.3	mm
d_a	max.	10.6	mm
D_a	max.	15.4	mm
r_a	max.	0.2	mm

Calculation data

Basic dynamic load rating	C	0.761	kN
Basic static load rating	C₀	0.335	kN
Fatigue load limit	P_u	0.014	kN
Reference speed		85000	r/min
Limiting speed		43000	r/min
Calculation factor	k_r	0.02
Calculation factor	f₀	7.7

Mass

Mass bearing

0.005

Model Number: W 638/9-2Z
Inner Diameter：9mm Outer Diameter：17mm Width：6mm
Reference speed:43000 r/min Limiting speed:85000 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2026-04-17
Application:Storage Tool,car shock absorber,dye pigments,medical equipment,boring bar boring bar,hydraulic cylinder,defogging and degreasing,motor,switch,tire industry,Machine Tool Accessories
Similar models:W 638/4 X-2Z W 63802 SAF 22638 x 6.7/8 W 638/2.5-2Z 638-RZ W 63806-2RZ W 63802 R W 63803 R W 63805-2RZ SAF 22638 x 6.13/16
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FYTB 45 LF	45	-	-	Bearings, units and housings
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