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：2026-04-16
Application:ultra-quiet generators,hydraulic connector,non-motor vehicle Electric car,electric hydraulic lifting platform,Pest Monitoring,motor,Laser Measurements,sample cup,Dental Equipment,manual Tools,power protection
Similar models:638/8-2Z W 638/8-2Z SAF 22638 x 6.13/16 W 63801 638-2RZ W 63804-2Z W 638-2RZ SAF 22638 x 7 T W 63803-2Z W 63803
BEARING POWER International Trading Co.,Ltd. specialize in W638/2-2Z products，there is large inventory of SKF W 638/2-2Z Deep groove ball bearings. We has been built up long-term cooperation with SKF company, could make a bulk order of the W 638/2-2Z Which SKF W638/2-2Z is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express. Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

Model No.	Inner Diameter	Outer Diameter	Width	Type
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61802-2Z	15	24	5	Bearings, units and housings
71805 CD/P4	25	37	7	Bearings, units and housings
71928 CD/HCP4A	140	190	24	Bearings, units and housings
TQO design	560	700	-	Bearings, units and housings
FY 15 FM	15	-	-	Bearings, units and housings
FYTB 35 LF	35	-	-	Bearings, units and housings
HE 2317	76.2	85	82	Bearings, units and housings
NAO 30x47x16	30	47	16	Bearings, units and housings
NU 238 ECML	190	340	55	Bearings, units and housings
SI 80 TXE-2LS	80	-	55	Bearings, units and housings

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