Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF W 638/4 R-2RS1

W 638/4 R-2RS1

Dimensions

d		4	mm
D		9	mm
B		4	mm
d₁	≈	5.2	mm
D₂	≈	8.1	mm
D₃		10.3	mm
C		1	mm
r_1,2	min.	0.1	mm

Abutment dimensions

d_a	min.	4.8	mm
d_a	max.	5.1	mm
r_a	max.	0.1	mm

Calculation data

Basic dynamic load rating	C	0.364	kN
Basic static load rating	C₀	0.114	kN
Fatigue load limit	P_u	0.005	kN
Reference speed		0	r/min
Limiting speed		40000	r/min
Calculation factor	k_r	0.02
Calculation factor	f₀	6.5

Mass

Mass bearing

0.0011

Model Number: W 638/4 R-2RS1
Inner Diameter：4mm Outer Diameter：9mm Width：4mm
Reference speed:40000 r/min Limiting speed:0 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2026-07-01
Application:tower crane,roller lathe,ECG,car steering pin,wheel lathe,stamping die and its equipment,Low-voltage electrical equipment,Die,electronic components,printing machinery,labor insurance
Similar models:W 638/5-2RZ W 63801 R-2Z W 63800 638/8-2Z W 63801 R W 638/4 XR-2Z W 638-2RZ W 638/2 R-2Z W 638/3-2Z W 638/3-2RS1
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Model No. Inner Diameter Outer Diameter Width Type

10x22x7 HMS5 RG
60x95x10 HMS5 V
AOH 241/670
BTW 160 CM/SP
IR 130x150x50

Purchase the SKF W 638/4 R-2RS1 Please fill in the following

Hot number： 1726209 B-2RS1/VP274 6231 6404 71813 ACD/HCP4 BK 1512 FY 2. TF FYWK 30 YTH GB 3034 GEZ 408 ES-2LS HN 1212 P 3/4 TF QJ 205 MA SAF 22234 TLC SSAFS 22544 T T4DB 170

Model No.	Inner Diameter	Outer Diameter	Width	Type
10x22x7 HMS5 RG
60x95x10 HMS5 V
AOH 241/670
BTW 160 CM/SP
IR 130x150x50