Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF W 638/1.5 R-2Z

W 638/1.5 R-2Z

Dimensions

d		1.5	mm
D		4	mm
B		2	mm
d₁	≈	2.15	mm
D₂	≈	3.5	mm
D₃		5	mm
C		0.6	mm
r_1,2	min.	0.05	mm

Abutment dimensions

d_a	min.	1.9	mm
d_a	max.	2.1	mm
r_a	max.	0.05	mm

Calculation data

Basic dynamic load rating	C	0.062	kN
Basic static load rating	C₀	0.016	kN
Fatigue load limit	P_u	0.001	kN
Reference speed		220000	r/min
Limiting speed		110000	r/min
Calculation factor	k_r	0.02
Calculation factor	f₀	6.4

Mass

Mass bearing

0.0001

Model Number: W 638/1.5 R-2Z
Inner Diameter：1.5mm Outer Diameter：4mm Width：2mm
Reference speed:110000 r/min Limiting speed:220000 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2026-06-24
Application:light therapy instrument,surgical instruments,mechanical annex,Other Machine Tools,gear type,stamping die and its equipment,industry test,fabric products,Medical printer,dye pigments,EEG
Similar models:W 638/4 X-2Z W 63802 R-2Z W 63803-2Z W 63800-2RZ W 638/8 R-2Z SAF 22638 x 7 W 63804-2RZ W 638/4 R-2Z W 63802-2RZ W 63806
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Model No. Inner Diameter Outer Diameter Width Type

99832
D/W RW2-6 R-2Z
FBSA 204/QBC
NCF 2230 V
OKC 130

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Model No.	Inner Diameter	Outer Diameter	Width	Type
99832
D/W RW2-6 R-2Z
FBSA 204/QBC
NCF 2230 V
OKC 130