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：2026-06-24
Application:extruder,Medium and large motor,product accessories,screen filter,animal anatomy,injection molding machine,coal,metering pump,quality inspection equipment,clean stationery,fruit and vegetable processing
Similar models:W 638/3-2RS1 W 638/2.5 R-2Z W 638/2 R-2Z SAF 22638 x 6.13/16 W 638/2 X-2Z W 63802 R W 63800 R-2Z 638-RZ W 63801-2RS1 W 63806
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Model No. Inner Diameter Outer Diameter Width Type

53412 M + U 412
63004-2RS1
7251
OKC 860
S71908 CD/P4A

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

Hot number： 18025 BD-230/950 CAK/W33-OH 30/950 H 25x52x8 HMS5 V 29334 E 29468 E 6004-RSH 6302/HR11TN 7019 CE/HCP4AL AOHX 3296 G BS2-2210-2RSK/VT143 BD-C 3076 KM-AOH 3076 G FY 1.3/16 TF/VA201 NJ 10/560 MA NUP 328 ECJ PFT 40 TF

Model No.	Inner Diameter	Outer Diameter	Width	Type
53412 M + U 412
63004-2RS1
7251
OKC 860
S71908 CD/P4A