Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF W 638/2.5-2Z

W 638/2.5-2Z

Dimensions

d		2.5	mm
D		6	mm
B		2.6	mm
d₁	≈	3.7	mm
D₂	≈	5.4	mm
r_1,2	min.	0.08	mm

Abutment dimensions

d_a	min.	3.1	mm
d_a	max.	3.6	mm
D_a	max.	5.5	mm
r_a	max.	0.08	mm

Calculation data

Basic dynamic load rating	C	0.117	kN
Basic static load rating	C₀	0.036	kN
Fatigue load limit	P_u	0.002	kN
Reference speed		170000	r/min
Limiting speed		85000	r/min
Calculation factor	k_r	0.02
Calculation factor	f₀	7.1

Mass

Mass bearing

0.0003

Model Number: W 638/2.5-2Z
Inner Diameter：2.5mm Outer Diameter：6mm Width：2.6mm
Reference speed:85000 r/min Limiting speed:170000 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2026-06-25
Application:container finishing,Pneumatic Control Elements,chemical raw materials and reagents,Machine tool accessories,X-ray Equipment,Workpiece,wall materials,animal anatomy,Storage Device,chromatography,non-ferrous metal alloy
Similar models:SAF 22638 T W 63805-2Z W 638/1.5-2Z W 63800 R SAF 22638 x 7 T SAF 22638 x 7 TLC SAF 22638 x 6.13/16 W 638/9-2Z 638-2RZ W 63802-2Z
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Model No. Inner Diameter Outer Diameter Width Type

13557
309-ZNR
7416 CBM
SNW 136x5.3/8
TU 1.11/16 TF

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Hot number： 108x170x15 HMSA10 RG 140x170x15 HMS5 V 1500380 15773 32209 412403 50x100x10 HMSA10 V 51214 7307 BEGAPH 65x140x12 HMSA10 V 87785 D/W R4-2RS1 HME 31/630 PF 1.1/2 TR SHT 85

Model No.	Inner Diameter	Outer Diameter	Width	Type
13557
309-ZNR
7416 CBM
SNW 136x5.3/8
TU 1.11/16 TF