Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF W 639-2Z

W 639-2Z

Dimensions

d		9	mm
D		30	mm
B		10	mm
d₂	≈	15.3	mm
D₂	≈	25.28	mm
r_1,2	min.	0.6	mm

Abutment dimensions

d_a	min.	13	mm
d_a	max.	15.2	mm
D_a	max.	26	mm
r_a	max.	0.6	mm

Calculation data

Basic dynamic load rating	C	4.36	kN
Basic static load rating	C₀	2.32	kN
Fatigue load limit	P_u	0.1	kN
Reference speed		60000	r/min
Limiting speed		30000	r/min
Calculation factor	k_r	0.035
Calculation factor	f₀	12.9

Mass

Mass bearing

0.035

Model Number: W 639-2Z
Inner Diameter：9mm Outer Diameter：30mm Width：10mm
Reference speed:30000 r/min Limiting speed:60000 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2026-08-24
Application:machine tool spindle,diving equipment,axle lathe,Machine tools,blood cell reagent,Hairbrush device,Medical printer,intermediate,clean stationery,enzyme,Oral Image
Similar models:W 639-2RS1 W 639/2.5 R-2ZS W 639/2.5-2ZS W 639/3-2RS1 W 639 W 639/2 R-2Z W 639/3 R-2Z W 639/2-2Z W 639-2Z 316639 AG
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Model No. Inner Diameter Outer Diameter Width Type

23028 CCK/W33 + AHX 3028
7022 ACE/HCP4A
BD-C 2326 K/VE240-H 2326
KM 10
PCMW 223801.5 M

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Hot number： 140x160x12 CRW1 R BD-23060 CCK/W33-AOH 3060 BD-23228-2CS5K/VT143-H 2328 44x62x10 HMS5 V 51112 6211/HR11QN 811/900 M BEAM 040115-2RS HA 2324 NAO 30x47x16 NKXR 30 NNCL 4872 CV NU 2307 ECJ PWTR 1747.2RS S7011 ACE/HCP4A

Model No.	Inner Diameter	Outer Diameter	Width	Type
23028 CCK/W33 + AHX 3028
7022 ACE/HCP4A
BD-C 2326 K/VE240-H 2326
KM 10
PCMW 223801.5 M