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

W 638/2-2Z

Dimensions

d		2	mm
D		5	mm
B		2.3	mm
d₁	≈	2.7	mm
D₂	≈	4.4	mm
r_1,2	min.	0.08	mm

Abutment dimensions

d_a	min.	2.5	mm
d_a	max.	2.6	mm
D_a	max.	4.5	mm
r_a	max.	0.08	mm

Calculation data

Basic dynamic load rating	C	0.094	kN
Basic static load rating	C₀	0.025	kN
Fatigue load limit	P_u	0.001	kN
Reference speed		200000	r/min
Limiting speed		100000	r/min
Calculation factor	k_r	0.02
Calculation factor	f₀	6.5

Mass

Mass bearing

0.0002

Model Number: W 638/2-2Z
Inner Diameter：2mm Outer Diameter：5mm Width：2.3mm
Reference speed:100000 r/min Limiting speed:200000 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:medical equipment,,Textile Accessories,Storage Tool,sterilizers,ventilation fans,comprehensive experiment,wheel lathe,packing equipment,municipal machinery,marine test
Similar models:W 638-2RS1 W 638/8-2Z 638-RZ W 63801 SAF 22638 x 7 T W 63803-2RS1 638/4-2Z 638/5-2Z W 63800-2RZ W 638/2 X-2Z
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Model No. Inner Diameter Outer Diameter Width Type

1400234
18737
6215 M
NKX 60
PCZ 2824 M

Purchase the SKF W 638/2-2Z Please fill in the following

Hot number： BD-23040 CCK/W33-H 3040 23755 411803 42x55x8 HMSA10 V 42x72x10 HMSA10 V 629-2RSH 718/670 AMB 72805 HM 88542/510 KR 40 XB NKIS 55 PCM 161820 M PFT 25 TR SAF 22530 x 5.1/4 TLC SAW 23228 T

Model No.	Inner Diameter	Outer Diameter	Width	Type
1400234
18737
6215 M
NKX 60
PCZ 2824 M