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：2024-12-13
Application:Optical Instruments,turret industry,Food testing,thread processing machine,Seals,Logistics Equipment,instrument,medical equipment,shoe-making machinery,test equipment,training beds etc
Similar models:W 639-2RZ 316639 AG W 639-2Z W 639/2 R-2Z W 639/1.5 R-2Z W 639 W 639/1.5-2Z W 639/3 R-2RS1 W 639/3-2RS1 W 639/2.5 R-2ZS
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Model No.	Inner Diameter	Outer Diameter	Width	Type
19596	50	68	9	Seals
38x60x10 HMS5 RG	38	60	10	Seals
5756	14.3002	34.93	6.35	Seals
6008 N	40	68	15	Bearings, units and housings
7571	19.05	38.07	6.35	Seals
LS 140180	140	180	9.5	Bearings, units and housings
NU 202 ECP	15	35	11	Bearings, units and housings
NU 2248 MA	240	440	120	Bearings, units and housings
OKCX 300	300		-
SAF 22310	50	-	-	Bearings, units and housings
S7216 CD/HCP4A	80	140	26	Bearings, units and housings
SYR 1 1/2 N	38.1	-	-	Bearings, units and housings

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