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

W 638/2 X-2Z

Dimensions

d		2	mm
D		5	mm
B		2.5	mm
d₁	≈	2.7	mm
D₂	≈	4.4	mm
r_1,2	min.	0.1	mm

Abutment dimensions

d_a	min.	2.6	mm
d_a	max.	2.6	mm
D_a	max.	4.5	mm
r_a	max.	0.1	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 X-2Z
Inner Diameter：2mm Outer Diameter：5mm Width：2.5mm
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：2025-12-09
Application:Spectrum Products,mobile toilet,pump industry,chemical raw materials and reagents,security equipment,hardware,plastic molding,other accessories,hanging clamp,Power equipment,machine tool spindle
Similar models:W 638/8-2Z W 638/4 XR-2Z W 63805-2RZ W 638/4-2Z W 638/5-2RZ W 638 W 63806-2RZ W 638/1.5 R-2Z W 63802 W 638/2.5-2Z
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Model No.	Inner Diameter	Outer Diameter	Width	Type
20x42x7 HMSA10 RG	20	42	7	Seals
38883	99.0092	110.0074	7.0104	Seals
38x50x7 HMS5 RG	38	50	7	Seals
BS2-2318-2RS5/VT143	90	190	73	Bearings, units and housings
D/W R144	3.175	6.35	2.38	Bearings, units and housings
KMFE 10 H	14	-	50	Bearings, units and housings
NF 19/600 ECMB	600	800	90	Bearings, units and housings
SAFS 23048 KA x 8.1/2	215.9	-	-	Bearings, units and housings
SAW 23218	90	-	-	Bearings, units and housings
SAW 23528 x 4.7/8 T	123.825	-	-	Bearings, units and housings
SHT 35	35	-	-	Coupling systems
W 624 R-2RZ	4	13	5	Bearings, units and housings

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