Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF W 639-2Z

W 639-2Z

Dimensions

d		9	mm
D		30	mm
B		10	mm
d₂	≈	15.3	mm
D₂	≈	25.28	mm
r_1,2	min.	0.6	mm

Abutment dimensions

d_a	min.	13	mm
d_a	max.	15.2	mm
D_a	max.	26	mm
r_a	max.	0.6	mm

Calculation data

Basic dynamic load rating	C	4.36	kN
Basic static load rating	C₀	2.32	kN
Fatigue load limit	P_u	0.1	kN
Reference speed		60000	r/min
Limiting speed		30000	r/min
Calculation factor	k_r	0.035
Calculation factor	f₀	12.9

Mass

Mass bearing

0.035

Model Number: W 639-2Z
Inner Diameter：9mm Outer Diameter：30mm Width：10mm
Reference speed:30000 r/min Limiting speed:60000 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:Garment Accessories,mathematical instruments,Machine Tool Accessories,Workpiece,test laboratory equipment and accessories,transistor fittings,plastic rolling,air conditioning tools,Machine tool accessories,medical equipment,reinforced machinery
Similar models:W 639-2Z 316639 AG W 639-2RZ W 639/3 R-2RS1 6391/K-6320 W 639/3 R-2Z W 639/2.5-2ZS W 639/3-2Z W 639/1.5-2Z W 639/1.5 R-2Z
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95x130x12 CRW1 V	95	130	12	Seals
FYR 1 7/16-18	36.5125	-	-	Bearings, units and housings
GEP 800 FS	800	1120	530	Bearings, units and housings
NJ 2224 ECJ	120	215	58	Bearings, units and housings
PFT 30 WF	30	-	-	Bearings, units and housings
SAFS 22526 x 4.1/2 T	114.3	-	-	Bearings, units and housings
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