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

W 639/2 R-2Z

Dimensions

d		2	mm
D		6	mm
B		3	mm
d₁	≈	3	mm
D₂	≈	5.4	mm
D₃		7.5	mm
C		0.8	mm
r_1,2	min.	0.15	mm

Abutment dimensions

d_a	min.	2.9	mm
d_a	max.	2.9	mm
r_a	max.	0.15	mm

Calculation data

Basic dynamic load rating	C	0.19	kN
Basic static load rating	C₀	0.051	kN
Fatigue load limit	P_u	0.002	kN
Reference speed		180000	r/min
Limiting speed		90000	r/min
Calculation factor	k_r	0.025
Calculation factor	f₀	6

Mass

Mass bearing

0.00041

Model Number: W 639/2 R-2Z
Inner Diameter：2mm Outer Diameter：6mm Width：3mm
Reference speed:90000 r/min Limiting speed:180000 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:surgical instruments,Broadcasting System,medical equipment,medical equipment,medical treatment,Cutting Machine,vertical processing,inorganic chemical,standing experimental equipment,joint protection,medical equipment
Similar models:W 639 W 639/3 R-2Z W 639/3-2RS1 W 639/1.5-2Z W 639/2.5 R-2ZS W 639-2RZ W 639/2.5-2ZS LL 639249/210 W 639/2-2Z W 639/2 R-2Z
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Model No. Inner Diameter Outer Diameter Width Type

BC2B 320117/HA4
NU 3188 ECMA/HB1
SAF 22544 x 7.7/8
RN-2x11.8 BF/G2
S7020 CB/P4A

Purchase the SKF W 639/2 R-2Z Please fill in the following

Hot number： 16007/HR22Q2 2220 K 22x32x7 CRW1 R 27x47x7 HMS5 RG 33024 58717 6225 BD-C 3188 KMB-AOHX 3188 G NKI 7/16 TN PSM 657560 A51 SAFS 23040 KATLC x 7.1/8 SAW 23518 x 3.1/4 TLC SNW 9x1.1/2 SYE 3 W 61814-2Z

Model No.	Inner Diameter	Outer Diameter	Width	Type
BC2B 320117/HA4
NU 3188 ECMA/HB1
SAF 22544 x 7.7/8
RN-2x11.8 BF/G2
S7020 CB/P4A