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

W 638/4 X-2RS1

Dimensions

d		4	mm
D		10	mm
B		4	mm
d₁	≈	5.9	mm
D₂	≈	8.8	mm
r_1,2	min.	0.2	mm

Abutment dimensions

d_a	min.	5.6	mm
d_a	max.	5.8	mm
D_a	max.	8.8	mm
r_a	max.	0.2	mm

Calculation data

Basic dynamic load rating	C	0.553	kN
Basic static load rating	C₀	0.245	kN
Fatigue load limit	P_u	0.011	kN
Reference speed		0	r/min
Limiting speed		36000	r/min
Calculation factor	k_r	0.02
Calculation factor	f₀	12.3

Mass

Mass bearing

0.0013

Model Number: W 638/4 X-2RS1
Inner Diameter：4mm Outer Diameter：10mm Width：4mm
Reference speed:36000 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：2025-12-09
Application:cooling system,Energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving,Special Equipment,joint protection,shaft milling machine,paper processing machine,other rubber,car,machining,tire industry,centrifugal pump
Similar models:W 638/3-2Z W 638/4 X-2Z W 638/4 X-2RS1 W 638/4 R-2RS1 W 63800-2RS1 W 63802-2RZ W 638/8-2Z W 638/5-2RZ W 63806-2RZ W 638-2RZ
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Model No.	Inner Diameter	Outer Diameter	Width	Type
22x35x7 HMSA10 V	22	35	7	Seals
50x90x10 HMS5 RG	50	90	10	Seals
52230 M	130	215	89	Bearings, units and housings
61916-2RS1	80	110	16	Bearings, units and housings
6214/HC5C3	70	125	24	Bearings, units and housings
7206 BEGAJ	30	62	16	Bearings, units and housings
FY 45 TDW	45	-	-	Bearings, units and housings
FYTBK 25 TF	25	-	-	Bearings, units and housings
IR 30x37x22	30	37	22	Bearings, units and housings
K 89430 M	150	300		Bearings, units and housings
NU 308 ECP	40	90	23	Bearings, units and housings
PCZ 1416 M	22.225	25.4	25.4	Bearings, units and housings

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Hot number： 22248 CCK/W33 32205 B 400145 405053 40x55x8 HMSA10 V 425 VRME R 6332 8x18x5 HMS5 RG BT4B 334060 G/HA1VA901 C 3148 K OKC 720 PBM 607590 M1G1 PSM 051010 A51 SAF 22520 x 3.5/16 SAW 23524 x 4.1/16