Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71908 ACE/P4A

71908 ACE/P4A

Dimensions

d		40	mm
D		62	mm
B		12	mm
d₁		46.5	mm
d₂		44.8	mm
D₁		54.15	mm
r_1,2	min.	0.6	mm
r_3,4	min.	0.3	mm
a		18.6	mm

Abutment dimensions

d_a	min.	43.2	mm
d_b	min.	42	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		48	mm

Calculation data

Basic dynamic load rating	C	9.23	kN
Basic static load rating	C₀	5.85	kN
Fatigue load limit	P_u	0.245	kN
Attainable speed for grease lubrication		28000	r/min
Attainable speed for oil-air lubrication		44000	r/min
Ball diameter	D_w	6.35	mm
Number of balls	z	19
Reference grease quantity	G_ref	1.4	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	84	N
Static axial stiffness, preload class A		78	N/µm
Preload class B	G_B	250	N
Static axial stiffness, preload class B		117	N/µm
Preload class C	G_C	505	N
Static axial stiffness, preload class C		153	N/µm
Calculation factors
Calculation factor	f	1.05
Calculation factor	f₁	0.99
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.07
Calculation factor	f_HC	1
Calculation factor	e	0.68
Calculation factor (single, tandem)	Y₂	0.87
Calculation factor (single, tandem)	Y₀	0.38
Calculation factor (single, tandem)	X₂	0.41
Calculation factor (back-to-back, face-to-face)	Y₁	0.92
Calculation factor (back-to-back, face-to-face)	Y₂	1.41
Calculation factor (back-to-back, face-to-face)	Y₀	0.76
Calculation factor (back-to-back, face-to-face)	X₂	0.67

Mass

Mass bearing

0.1

Model Number: 71908 ACE/P4A
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：2026-04-17
Application:reducer,universal category,extruder,textile machinery,clean stationery,coal mill,glass,large agricultural machinery,Antenna Potentials,horizontal processing,packaging materials
Similar models:71908 CE/HCP4A 71908 CD/HCP4A 71908 ACD/P4A 71908 CE/HCP4AL S71908 ACE/P4A S71908 CD/P4A 71908 CE/P4AL 71908 CB/HCP4A S71908 CE/P4A 71908 ACB/P4A
BEARING POWER International Trading Co.,Ltd. specialize in 71908ACE/P4A products，there is large inventory of SKF 71908 ACE/P4A 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 ACE/P4A Which SKF 71908ACE/P4A 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： 15802 30210 415002 55x75x10 HMSA10 RG 6310-2Z/VA201 7305 BECBPH 86533 7010 CE/P4A BC4-8051/HA4 FY 35 LF HM 3068 NJ 2218 ECJ NU 10/500 MA SNW 140x7.13/16 W 61808-2RZ