Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF W 638/8-2Z

W 638/8-2Z

Dimensions

d		8	mm
D		16	mm
B		6	mm
d₂	≈	9.65	mm
D₂	≈	14.2	mm
r_1,2	min.	0.2	mm

Abutment dimensions

d_a	min.	9.5	mm
d_a	max.	9.6	mm
D_a	max.	14.4	mm
r_a	max.	0.2	mm

Calculation data

Basic dynamic load rating	C	0.715	kN
Basic static load rating	C₀	0.3	kN
Fatigue load limit	P_u	0.012	kN
Reference speed		90000	r/min
Limiting speed		45000	r/min
Calculation factor	k_r	0.02
Calculation factor	f₀	7.5

Mass

Mass bearing

0.0046

Model Number: W 638/8-2Z
Inner Diameter：8mm Outer Diameter：16mm Width：6mm
Reference speed:45000 r/min Limiting speed:90000 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:Sensors,pressure control valve,preservation equipment,economic mold,Digital Generator,Automobile,extruder,wire industry,mechanical annex,chemical instruments,gantry processing
Similar models:SAF 22638 TLC SAF 22638 x 6.7/8 TLC W 63806-2RZ W 63805 W 638/3-2RS1 W 63803 W 638/3-2Z W 63802-2RS1 SAF 22638 x 6.7/8 W 638/2.5 R-2Z
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Model No.	Inner Diameter	Outer Diameter	Width	Type
120 VS R	108	-	-	Seals
13739	34.925	60.3	7.95	Seals
13948	240	320	60	Bearings, units and housings
BD-23224 CCK/W33-H 2324	110	215	76	Bearings, units and housings
7015 ACD/HCP4AH1	75	115	20	Bearings, units and housings
71919 CD/HCP4AL	95	130	18	Bearings, units and housings
71936 CD/HCP4AH1	180	250	33	Bearings, units and housings
87789	-	-	28	Seals
HE 2311 B	50.8	75	59	Bearings, units and housings
HE 3038	171.45	190	112	Bearings, units and housings
NUP 322 ECJ	110	240	50	Bearings, units and housings
SAF 1510	42.8625	-	-	Bearings, units and housings

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Hot number： 239/850 CA/W33 411506 409803 42x55x8 HMSA10 RG 7019 ACD/HCP4AL 9878 BT4B 334099/HA4 FY 2.3/4 UTF FY 50 LDW GS 81260 KR 47 XB NNU 41/630 M/W33 NU 1032 M SAF 22634 x 5.13/16 W 6302-2RZ