Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF 638/4-2Z

638/4-2Z

Dimensions

d		4	mm
D		9	mm
B		4	mm
d₁	≈	5.2	mm
D₂	≈	8.1	mm
r_1,2	min.	0.1	mm

Abutment dimensions

d_a	min.	4.6	mm
d_a	max.	5.1	mm
D_a	max.	8.4	mm
r_a	max.	0.1	mm

Calculation data

Basic dynamic load rating	C	0.54	kN
Basic static load rating	C₀	0.18	kN
Fatigue load limit	P_u	0.07	kN
Reference speed		140000	r/min
Limiting speed		70000	r/min
Calculation factor	k_r	0.015
Calculation factor	f₀	10

Mass

Mass bearing

0.0013

Model Number: 638/4-2Z
Inner Diameter：4mm Outer Diameter：9mm Width：4mm
Reference speed:70000 r/min Limiting speed:140000 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2021-06-05
Application:test strip,expectoration machine,miscellaneous instruments,Cylinder Standard,organic raw materials,shaft milling machine,Machine Tool Accessories,storage and transportation equipment,pneumatic Pump,metallurgy,Forming mold
Similar models:W 63802 R-2Z W 63806-2RZ W 638/5 R-2Z W 63802 SAF 22638 x 6.7/8 TLC W 63803 W 638/1.5-2Z SAF 22638 x 7 TLC W 638/3-2RS1 W 63803-2Z
BEARING POWER International Trading Co.,Ltd. specialize in 638/4-2Z products，there is large inventory of SKF 638/4-2Z Deep groove ball bearings. We has been built up long-term cooperation with SKF company, could make a bulk order of the 638/4-2Z Which SKF 638/4-2Z is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express. Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

Model No.	Inner Diameter	Outer Diameter	Width	Type
14x25x5 HMS5 V	14	25	5	Seals
314987 B	400	560	205	Bearings, units and housings
38x50x7 HMSA10 RG	38	50	7	Seals
6416	80	200	48	Bearings, units and housings
7012 ACE/P4A	60	95	18	Bearings, units and housings
71917 CB/HCP4A	85	120	18	Bearings, units and housings
D/W R3W.1562 R	4.762	12.7	3.967	Bearings, units and housings
FYAWK 1.15/16 LTA	49.213	-	-	Bearings, units and housings
OKCX 720	720		-
NUTR 50110 A	50	110	32	Bearings, units and housings
W 6210-2Z	50	90	20	Bearings, units and housings
YAR 205-100-2RFGR/HV	25.4	52	34.1	Bearings, units and housings

Purchase the SKF 638/4-2Z Please fill in the following

Hot number： 30x40x7 CRW1 V 32252/DF 51210 5399 7038 CD/HCP4AH1 72539 D/W R144 R HA 318 E NJ 214 ECML NNU 4938 BK/SPW33 S7214 ACD/HCP4A SAF 22324 SAF 22326 T SYJ 1. TF W 61904-2Z