Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF 638-RZ

638-RZ

Dimensions

d		8	mm
D		28	mm
B		9	mm
d₁	≈	14.8	mm
D₂	≈	22.6	mm
r_1,2	min.	0.3	mm

Abutment dimensions

d_a	min.	10.4	mm
d_a	max.	14.7	mm
D_a	max.	25.6	mm
r_a	max.	0.3	mm

Calculation data

Basic dynamic load rating	C	1.33	kN
Basic static load rating	C₀	0.57	kN
Fatigue load limit	P_u	0.024	kN
Reference speed		60000	r/min
Limiting speed		38000	r/min
Calculation factor	k_r	0.03
Calculation factor	f₀	12

Mass

Mass bearing

0.03

Model Number: 638-RZ
Inner Diameter：8mm Outer Diameter：28mm Width：9mm
Reference speed:38000 r/min Limiting speed:60000 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2026-07-28
Application:miscellaneous instruments,rubber products machinery and equipment,horizontal processing,historical instruments,thin metal materials,leather processing,vacuum suction cup,Hair styling device,Medium and large motor,internal combustion engine,tube
Similar models:W 63803-2RZ W 638/8 R-2Z 638/4-2Z W 63801-2RS1 W 63800-2RZ W 63804-2RS1 W 63801 W 638/2.5 R-2Z SAF 22638 SAF 22638 x 6.7/8 T
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Model No. Inner Diameter Outer Diameter Width Type

313499 B
85x110x12 HMSA10 RG
99286
FYTB 25 TR
H 320 E

Purchase the SKF 638-RZ Please fill in the following

Hot number： 1650280 220 VL V 22318 E 22324-2CS5/VT143 32322/DF 49985 812/710 M 85123 C 30/500 M IR 22x26x20 NA 4836 NAO 30x45x26 PRM 151715 S7204 ACD/HCP4A SAW 23524 x 4.1/4 T

Model No.	Inner Diameter	Outer Diameter	Width	Type
313499 B
85x110x12 HMSA10 RG
99286
FYTB 25 TR
H 320 E