Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71908 CB/P4AL

71908 CB/P4AL

Dimensions

d		40	mm
D		62	mm
B		12	mm
d₁		48.46	mm
d₂		47.6	mm
D₂		55.64	mm
b		2	mm
C₁		5.9	mm
C₂		2.8	mm
C₃		1.7	mm
r_1,2	min.	0.6	mm
r_3,4	min.	0.3	mm
a		14.8	mm

Abutment dimensions

d_a	min.	43.2	mm
d_b	min.	43.2	mm
D_a	max.	58.8	mm
D_b	max.	60	mm
r_a	max.	0.6	mm
r_b	max.	0.3	mm
d_n		49.1	mm

Calculation data

Basic dynamic load rating	C	7.15	kN
Basic static load rating	C₀	6.95	kN
Fatigue load limit	P_u	0.176	kN
Attainable speed for grease lubrication		30000	r/min
Attainable speed for oil-air lubrication		45000	r/min
Ball diameter	D_w	3.969	mm
Number of balls	z	28
Reference grease quantity	G_ref	1.38	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	18	N
Static axial stiffness, preload class A		25	N/µm
Preload class B	G_B	36	N
Static axial stiffness, preload class B		32	N/µm
Preload class C	G_C	110	N
Static axial stiffness, preload class C		52	N/µm
Calculation factors
Calculation factor	f	1.06
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.02
Calculation factor	f_2C	1.07
Calculation factor	f_HC	1
Calculation factor	f₀	9.8

Mass

Mass bearing

0.12

Model Number: 71908 CB/P4AL
Inner Diameter：40mm Outer Diameter：62mm Width：12mm
Reference speed:- Limiting speed:-
Type：Bearings, units and housings Super-precision bearings Angular contact ball bearings Angular contact ball bearings, super-precision
Details： Angular contact ball bearings, super-precision
Update date：2026-04-16
Application:Cleaning equipment,miscellaneous instruments,journal lathe,ventilation equipment,Storage Tool,sawing machine,rolling mill roll neck and slowdown device,thin metal materials,filter paper products,,motorcycle
Similar models:71908 CB/HCP4AL 71908 CB/HCP4A 71908 CE/P4A 71908 ACE/P4AH1 71908 ACB/P4A 71908 CD/HCP4A S71908 ACE/P4A 71908 ACD/P4A S71908 CD/P4A S71908 ACD/HCP4A
BEARING POWER International Trading Co.,Ltd. specialize in 71908CB/P4AL products，there is large inventory of SKF 71908 CB/P4AL Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 71908 CB/P4AL Which SKF 71908CB/P4AL 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.

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Hot number： 1312 EKTN9 + H 312 BD-22344-2CS5K/VT143-OH 2344 H 418502 87923 71920 ACD/HCP4AL 87070 99181 BT4B 328083/HA1 C 2213 KV FSAF 1520 MVR1-100 P 1. TR SAF 1317 SAF 22610 x 1.5/8 WS 89436