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

W 639

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		36000	r/min
Calculation factor	k_r	0.035
Calculation factor	f₀	12.9

Mass

Mass bearing

0.033

Model Number: W 639
Inner Diameter：9mm Outer Diameter：30mm Width：10mm
Reference speed:36000 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：2026-06-24
Application:product accessories,Textile Accessories,coupling type,non-ferrous metal alloy,hydraulic connector,storage and transportation equipment,safety testing,noise inspection,ultra-quiet generators,tray industry,wheel lathe
Similar models:W 639 W 639/1.5-2Z W 639/3-2Z W 639/2.5 R-2ZS W 639-2RZ 316639 AG W 639/2.5-2ZS W 639/3-2RS1 W 639/2-2Z W 639/1.5 R-2Z
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Model No. Inner Diameter Outer Diameter Width Type

595323
8782
BT2B 332685/HA1
NK 95/36
SAF 1318

Purchase the SKF W 639 Please fill in the following

Hot number： 625-Z 7314 BECBY BEAS 025057-2RZ TQO design FSNL 320 TURU GEH 35 ESX-2LS JLM 104945/910 L 44643/610 NJ 407 SAF 22622 x 3.7/8 PSM 223230 A51 QJ 206 N2MA SAF 1620 x 3.3/8 SNW 138x6.15/16 SYE 1 15/16 N-118

Model No.	Inner Diameter	Outer Diameter	Width	Type
595323
8782
BT2B 332685/HA1
NK 95/36
SAF 1318