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

W 638-2RZ

Dimensions

d		8	mm
D		28	mm
B		9	mm
d₂	≈	13.9	mm
D₂	≈	22.38	mm
r_1,2	min.	0.3	mm

Abutment dimensions

d_a	min.	10	mm
d_a	max.	13.8	mm
D_a	max.	26	mm
r_a	max.	0.3	mm

Calculation data

Basic dynamic load rating	C	3.97	kN
Basic static load rating	C₀	1.96	kN
Fatigue load limit	P_u	0.083	kN
Reference speed		67000	r/min
Limiting speed		32000	r/min
Calculation factor	k_r	0.035
Calculation factor	f₀	12.4

Mass

Mass bearing

0.028

Model Number: W 638-2RZ
Inner Diameter：8mm Outer Diameter：28mm Width：9mm
Reference speed:32000 r/min Limiting speed:67000 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:Food testing,joint protection,mobile toilet,Vertical machining,Broadcasting System,plant determination,plastic molding,tube,air shower etc,stirrer,EEG
Similar models:W 638/5 R-2Z W 638/3-2Z W 638/2.5-2Z W 63800 R-2RS1 W 63800 W 63802-2RZ W 638/3 R-2Z W 63802 R W 63803 R 638-RZ
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Model No.	Inner Diameter	Outer Diameter	Width	Type
125x150x12 HMSA10 V	125	150	12	Seals
19278	49.2252	72.01	6.35	Seals
24130-2CS5/VT143	150	250	100	Bearings, units and housings
24156-2CS5K30/VT143	280	460	180	Bearings, units and housings
28669	73.025	95.28	9.53	Seals
3900564	990.6	1041.4	22.23	Seals
6408 N	40	110	27	Bearings, units and housings
71912 CE/HCP4A	60	85	13	Bearings, units and housings
D/W RW144	3.175	6.35	3.175	Bearings, units and housings
GS 89318	90	155	13.5	Bearings, units and housings
K 6x9x8 TN	6	9	8	Bearings, units and housings
YELAG 206-103	30.163	62	36.5	Bearings, units and housings

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Hot number： 22x35x7 HMSA10 V 401800 51232 M 680 VRME R 6214 NR 98x120x12 CRW1 V C 30/670 KM GX 50 F K 50x55x30 PCM 505540 E SAF 1507 SAF 22510 x 1.3/4 SAF 23026 KA x 4.5/16 SIL 40 ES-2RS WS 81116