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

W 638/4-2RZ

Dimensions

d		4	mm
D		9	mm
B		4	mm
d₁	≈	5.2	mm
D₂	≈	8.1	mm
r_1,2	min.	0.1	mm

Abutment dimensions

d_a	min.	4.8	mm
d_a	max.	5.1	mm
D_a	max.	8.2	mm
r_a	max.	0.1	mm

Calculation data

Basic dynamic load rating	C	0.364	kN
Basic static load rating	C₀	0.114	kN
Fatigue load limit	P_u	0.005	kN
Reference speed		140000	r/min
Limiting speed		70000	r/min
Calculation factor	k_r	0.02
Calculation factor	f₀	6.5

Mass

Mass bearing

0.001

Model Number: W 638/4-2RZ
Inner Diameter：4mm Outer Diameter：9mm Width：4mm
Reference speed:70000 r/min Limiting speed:140000 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2021-06-03
Application:non-ferrous metal alloy,Cleaning equipment,metering pump,rolling machine,machine lathe,DC generators,Vacuum generator,roller lathe,inorganic chemical,security equipment,boring bar boring bar
Similar models:SAF 22638 TLC 638-2RZ SAF 22638 T SAF 22638 x 6.13/16 TLC W 638/4 R-2Z SAF 22638 x 7 W 63805-2Z W 638/5-2Z W 638/5-2RS1 W 63801-2RZ
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Model No.	Inner Diameter	Outer Diameter	Width	Type
17675	44.45	75.72	11.13	Seals
BD-22212 EK-H 312	55	110	28	Bearings, units and housings
6309/HR22Q2	45	100	25	Bearings, units and housings
7009 ACD/HCP4A	45	75	16	Bearings, units and housings
7213 BEGAPH	65	120	23	Bearings, units and housings
D/W R2 R-2RZ	3.175	9.525	3.967	Bearings, units and housings
FSAF 1616 x 2.5/8 T	66.675	-	-	Bearings, units and housings
GEZ 500 ESX-2LS	127	196.85	95.25	Bearings, units and housings
NUKR 47 A	-	47	66	Bearings, units and housings
P 85 R-1.1/2 FM	38.1	-	-	Bearings, units and housings
PBM 607590 M1G1	60	75	90	Bearings, units and housings
SNW 122x3.15/16/VZ726	100.0125	145.3896	110.1852	Bearings, units and housings

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