Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF W 638/2.5 R-2Z

W 638/2.5 R-2Z

Dimensions

d		2.5	mm
D		6	mm
B		2.6	mm
d₁	≈	3.7	mm
D₂	≈	5.4	mm
D₃		7.1	mm
C		0.8	mm
r_1,2	min.	0.08	mm

Abutment dimensions

d_a	min.	3.1	mm
d_a	max.	3.6	mm
r_a	max.	0.08	mm

Calculation data

Basic dynamic load rating	C	0.117	kN
Basic static load rating	C₀	0.036	kN
Fatigue load limit	P_u	0.002	kN
Reference speed		170000	r/min
Limiting speed		85000	r/min
Calculation factor	k_r	0.02
Calculation factor	f₀	7.1

Mass

Mass bearing

0.0004

Model Number: W 638/2.5 R-2Z
Inner Diameter：2.5mm Outer Diameter：6mm Width：2.6mm
Reference speed:85000 r/min Limiting speed:170000 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2026-08-20
Application:vacuum filter,molding machine,agricultural testing and analysis equipment and related,Low-voltage electrical equipment,car instrument,spectrometer,Energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving,drawing die,Sensors,surgical instruments,wire industry
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Model No. Inner Diameter Outer Diameter Width Type

10127
7018 CE/P4AL1
KMK 1
OKC 120
PF 1. TR

Purchase the SKF W 638/2.5 R-2Z Please fill in the following

Hot number： 32221 33895/33822 403153 44980 61906-2RZ 7019 ACD/P4A 71920 ACD/HCP4AL 7203 BEY BD-C 3072 KM-AOH 3072 G NKI 17/20 OH 39/530 HE QJ 1096 N2MA RN-1.5x13.8 BF/G2 S7000 CE/P4A SYR 3 1/2-18

Model No.	Inner Diameter	Outer Diameter	Width	Type
10127
7018 CE/P4AL1
KMK 1
OKC 120
PF 1. TR