Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF W 638/4 X-2RZ

W 638/4 X-2RZ

Dimensions

d		4	mm
D		10	mm
B		4	mm
d₁	≈	5.9	mm
D₂	≈	8.8	mm
r_1,2	min.	0.2	mm

Abutment dimensions

d_a	min.	5.6	mm
d_a	max.	5.8	mm
D_a	max.	8.9	mm
r_a	max.	0.2	mm

Calculation data

Basic dynamic load rating	C	0.553	kN
Basic static load rating	C₀	0.245	kN
Fatigue load limit	P_u	0.011	kN
Reference speed		130000	r/min
Limiting speed		63000	r/min
Calculation factor	k_r	0.02
Calculation factor	f₀	12.3

Mass

Mass bearing

0.0013

Model Number: W 638/4 X-2RZ
Inner Diameter：4mm Outer Diameter：10mm Width：4mm
Reference speed:63000 r/min Limiting speed:130000 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2024-12-14
Application:survey accessories,rubber products machinery and equipment,Power equipment,Security Equipment,wheel lathe,tapping machine,Rolling mill,plastic blow molding,key lock,multi-knife lathe,Perfusion device
Similar models:638/8-2Z W 63804 R-2Z W 638/1.5-2Z W 63805-2Z 638-RZ W 63800-2RZ W 638/3-2RS1 W 638 W 63805-2RZ W 638/8 R-2Z
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SY 2.3/16 FM	55.563	-	-	Bearings, units and housings
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Hot number： 2211 EM 22244 CC/W33 25590/25520 292/530 EM 30 VS R 6304 ETN9 7411 D/W RW4 R-2RS1 FSAF 22517 x 2.7/8 N 068 NUTR 45 A OKBS 117 PF 45 TR SAF 22638 x 6.7/8 SNP 3048x8.15/16