Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF W 639/3 R-2Z

W 639/3 R-2Z

Dimensions

d		3	mm
D		8	mm
B		4	mm
d₁	≈	4.35	mm
D₂	≈	7.25	mm
D₃		9.5	mm
C		0.9	mm
r_1,2	min.	0.15	mm

Abutment dimensions

d_a	min.	3.9	mm
d_a	max.	4.3	mm
r_a	max.	0.15	mm

Calculation data

Basic dynamic load rating	C	0.319	kN
Basic static load rating	C₀	0.09	kN
Fatigue load limit	P_u	0.004	kN
Reference speed		150000	r/min
Limiting speed		75000	r/min
Calculation factor	k_r	0.025
Calculation factor	f₀	6.1

Mass

Mass bearing

0.00092

Model Number: W 639/3 R-2Z
Inner Diameter：3mm Outer Diameter：8mm Width：4mm
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：2026-04-17
Application:mobile toilet,Anti-defibrillation pacing,garden machinery,SPA equipment,agriculture,Other machinery,intermediate,power tools,internal combustion engine,Gripper Swing,wall industry
Similar models:W 639/3 R-2RS1 W 639/3 R-2Z W 639/2-2Z 316639 AG W 639-2Z W 639/2.5 R-2ZS W 639/3-2RS1 W 639 W 639/3-2Z LL 639249/210
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Model No.	Inner Diameter	Outer Diameter	Width	Type
BD-23030 CCK/W33-H 3030	135	225	56	Bearings, units and housings
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86562	-	-	63.5	Seals
AOH 30/630	600	630	258	Bearings, units and housings
FYTBK 20 TD	20	-	-	Bearings, units and housings
KDMS 704-460/210	210	520.7	-	Coupling systems
NNU 4176 K30M	380	620	243	Bearings, units and housings
PCM 101212 M	10	12	12	Bearings, units and housings
S7212 CD/P4A	60	110	22	Bearings, units and housings
SSAFS 22640 x 7.1/8 T	180.975	-	-	Bearings, units and housings
STO 25	25	52	16	Bearings, units and housings
W 619/8-2RZ	8	19	6	Bearings, units and housings

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