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

W 638/4 X-2Z

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.	8.8	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-2Z
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：2025-12-09
Application:food / grain / food equipment,Spectrum Products,rolling mill roll neck and slowdown device,steam Hydraulic control element,magnetic elements,Warehouse Shelf Equipment,milling head plug,Machine Tool Accessories,Broadcasting System,Power equipment,training beds etc
Similar models:W 638/4 XR-2RS1 W 638/5 R-2Z SAF 22638 x 7 TLC SAF 22638 x 7 T W 63800 R-2RS1 W 63801 R W 638/8 R-2Z W 63802-2RZ W 638/4-2Z 638/5-2Z
BEARING POWER International Trading Co.,Ltd. specialize in W638/4X-2Z products，there is large inventory of SKF W 638/4 X-2Z Deep groove ball bearings. We has been built up long-term cooperation with SKF company, could make a bulk order of the W 638/4 X-2Z Which SKF W638/4X-2Z is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express. Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

Model No.	Inner Diameter	Outer Diameter	Width	Type
17285	44.45	61.9	7.95	Seals
32289	81.9912	99.568	12.7	Seals
44959	114.3	139.73	9.53	Seals
6206-2RSH	30	62	16	Bearings, units and housings
6314 NR	70	150	35	Bearings, units and housings
85122	-	-	38.1	Seals
87566	-	-	57.15	Seals
BT4-8139 G/HA1	711.2	914.4	-	Bearings, units and housings
K 81207 TN	35	62		Bearings, units and housings
SI 60 TXE-2LS	60	-	44	Bearings, units and housings
YAR 211-203-2FW/VA201	55.562	100	25	Bearings, units and housings
YELAG 206	30	62	48.4	Bearings, units and housings

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