Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF W 638/3 R-2Z

W 638/3 R-2Z

Dimensions

d		3	mm
D		7	mm
B		3	mm
d₂	≈	3.85	mm
D₂	≈	6.35	mm
D₃		8.1	mm
C		0.8	mm
r_1,2	min.	0.1	mm

Abutment dimensions

d_a	min.	3.7	mm
d_a	max.	3.8	mm
r_a	max.	0.1	mm

Calculation data

Basic dynamic load rating	C	0.178	kN
Basic static load rating	C₀	0.057	kN
Fatigue load limit	P_u	0.002	kN
Reference speed		160000	r/min
Limiting speed		80000	r/min
Calculation factor	k_r	0.02
Calculation factor	f₀	7.1

Mass

Mass bearing

0.00051

Model Number: W 638/3 R-2Z
Inner Diameter：3mm Outer Diameter：7mm Width：3mm
Reference speed:80000 r/min Limiting speed:160000 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:motor,miscellaneous instruments,thread processing machine,turret industry,X-ray Equipment,Control,packaging machinery,Forging machine,Other Measurements,Sensors,Air
Similar models:W 638/3 R-2Z SAF 22638 TLC W 63805-2Z 638/5-2Z W 638/1.5-2Z W 63805-2RZ W 63806 R-2Z W 638/2 XR-2Z W 63803 R-2Z W 63800-2Z
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Model No.	Inner Diameter	Outer Diameter	Width	Type
13662	34.925	53.98	6.35	Seals
34283	87.3252	114.32	11.13	Seals
36x54x8 CRW1 R	36	54	8	Seals
6216/C3VL0241	80	140	26	Bearings, units and housings
700 VL V	630	-	-	Seals
71919 ACD/P4AL	95	130	18	Bearings, units and housings
9664	24.6126	42.82	7.95	Seals
BS2-2211-2RSK/VT143	55	100	31	Bearings, units and housings
NJ 2313 ECPH	65	140	48	Bearings, units and housings
OKBS 84	84	-	-
SAFS 22522 x 3.13/16	96.8375	-	-	Bearings, units and housings
SNL 3134 G	170	-	-	Bearings, units and housings

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