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：2025-12-09
Application:garbage disposal,car steering pin,generator,security,medical equipment,baler,Equipment,plastic rolling,air conditioning tools,Film machine,economic mold
Similar models:6391/K-6320 W 639/2-2Z W 639/1.5 R-2Z W 639/2.5 R-2ZS W 639-2Z LL 639249/210 W 639/3-2Z W 639-2RS1 W 639-2RZ W 639/2.5-2ZS
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Hot number： 18626 211-2ZNR 24931 470486 71819 CD/HCP4 81214 TN BD-BS2-2211-2RSK/VT143-H 311 E BT4B 334080 G/HA1VA901 IR 160x175x40 NJG 2307 VH NKIB 5902 OKCX 890 SD 50x58x4 SY 50 FM TU 35 TF