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

W 638/3-2Z

Dimensions

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

Abutment dimensions

d_a	min.	3.7	mm
d_a	max.	3.8	mm
D_a	max.	6.5	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

0.00041

Model Number: W 638/3-2Z
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：2026-04-16
Application:defogging and degreasing,Special Equipment,extruder,electric pump,glass,mechanical and electrical,car steering pin,boring bar boring bar,training beds etc,Wire grinder,other mold
Similar models:SAF 22638 x 7 T W 638/2 XR-2Z SAF 22638 x 6.7/8 W 63800-2RS1 W 638-2RZ W 63802 R-2Z W 63806 R-2Z W 63805-2Z W 63802-2RS1 W 638/4-2Z
BEARING POWER International Trading Co.,Ltd. specialize in W638/3-2Z products，there is large inventory of SKF W 638/3-2Z Deep groove ball bearings. We has been built up long-term cooperation with SKF company, could make a bulk order of the W 638/3-2Z Which SKF W638/3-2Z 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
270x335x18 HDS1 R	270	335	18	Seals
307-ZNR	35	80	21	Bearings, units and housings
51215	75	110	27	Bearings, units and housings
5756	14.3002	34.93	6.35	Seals
68x90x8 CRW1 R	68	90	8	Seals
71924 ACB/P4AL	120	165	22	Bearings, units and housings
8796	22.225	41.25	6.35	Seals
FSNL 517	76.2	-	-	Bearings, units and housings
FYTBK 20 TD	20	-	-	Bearings, units and housings
G 28x37x4	28	37	4	Seals
KR 26 PPXA	-	26	36	Bearings, units and housings
NU 2319 ECJ	95	200	67	Bearings, units and housings

Purchase the SKF W 638/3-2Z Please fill in the following

Hot number： 16044 32912 6005/HR22Q2 7040 CD/HCP4AH1 75x95x12 HMSA10 RG 91337 FYR 2 15/16-3 PFT 3/4 TF SAF 22611 T SAF 23040 KA x 7.1/8 SNW 144x8 SSAFS 22534 x 6 SY 1.15/16 DUTF SYK 20 TD W 627/7 R-2ZS