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

W 638/2 R-2Z

Dimensions

d		2	mm
D		5	mm
B		2.3	mm
d₁	≈	2.7	mm
D₂	≈	4.4	mm
D₃		6.1	mm
C		0.6	mm
r_1,2	min.	0.08	mm

Abutment dimensions

d_a	min.	2.5	mm
d_a	max.	2.6	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 R-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：2026-04-17
Application:storage and transportation equipment,security equipment,Surveying Surveying Instruments,sleep monitoring,wall industry,decoration machinery,car steering pin,plastic rolling,flow control valve,Pneumatic Control Valves,Industrial Electromechanical
Similar models:SAF 22638 x 6.13/16 T 638/4-2Z W 63805 R W 638/5-2Z W 63806 W 63800 R SAF 22638 x 7 W 638/5 R-2Z W 63802-2RZ W 63800 R-2RS1
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Model No.	Inner Diameter	Outer Diameter	Width	Type
11123	28.575	41.25	6.35	Seals
30222/DF	110	200	-	Bearings, units and housings
331625	603.25	857.25	-	Bearings, units and housings
470336	328	-	-	Seals
471351	1281	-	-	Seals
627-2RSLTN9/HC5C3WTF1	7	22	7	Bearings, units and housings
C 4128 V/VE240	140	225	85	Bearings, units and housings
FY 1. WF	25.4	-	-	Bearings, units and housings
NNF 5020 ADA-2LSV	100	150	67	Bearings, units and housings
OKCX 880	880		-
SNL 3140	170	-	-	Bearings, units and housings
YSP 206-103 SB-2F	30.16	62	28	Bearings, units and housings

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