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：2026-04-17
Application:Logistics Equipment,printing machinery,air purification,forming machine,Forming mold,car steering pin,altimeter etc,Industrial Adhesive,agricultural testing and analysis equipment and related,defogging and degreasing,medical equipment
Similar models:SAF 22638 TLC W 63802 R SAF 22638 x 6.7/8 T 638/8-2Z W 63805 W 63806 SAF 22638 x 6.7/8 W 638/4 XR-2Z SAF 22638 x 6.13/16 TLC W 638/4 X-2RS1
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130x170x12 HMSA10 RG	130	170	12	Seals
310-2Z	50	110	27	Bearings, units and housings
71911 ACE/P4AH1	55	80	13	Bearings, units and housings
71916 ACB/HCP4A	80	110	16	Bearings, units and housings
FYTB 1.7/16 LDW	36.5125	-	-	Bearings, units and housings
NA 6903	17	30	23	Bearings, units and housings
NNCF 4868 CV	340	420	80	Bearings, units and housings
PCM 182025 M	18	20	25	Bearings, units and housings
S7008 ACB/HCP4A	40	68	15	Bearings, units and housings
S7209 ACD/P4A	45	85	19	Bearings, units and housings
SNW 24x4.1/16	103.1875	120	87.7824	Bearings, units and housings
YAR 203/12-2F	12	40	27.4	Bearings, units and housings

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Hot number： 14423 16054 1800558 53209 + U 209 708 CE/P4A AH 2338 G C 4040 V HM 903249/210 KR 16 PPA LR 8x12x10.5 NNC 4920 CV NU 216 ECJ PCZ 0708 M SAF 22518 x 3.1/8 SYNT 60 LTF