Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71956 CD/P4A

71956 CD/P4A

Dimensions

d		280	mm
D		380	mm
B		46	mm
d₁		311.8	mm
d₂		311.8	mm
D₁		348.2	mm
r_1,2	min.	2.1	mm
r_3,4	min.	1.1	mm
a		67.4	mm

Abutment dimensions

d_a	min.	291	mm
d_b	min.	291	mm
D_a	max.	369	mm
D_b	max.	374	mm
r_a	max.	2	mm
r_b	max.	1	mm
d_n		319.7	mm

Calculation data

Basic dynamic load rating	C	291	kN
Basic static load rating	C₀	455	kN
Fatigue load limit	P_u	10.6	kN
Attainable speed for grease lubrication		3200	r/min
Attainable speed for oil-air lubrication		4800	r/min
Ball diameter	D_w	30.162	mm
Number of balls	z	31
Reference grease quantity	G_ref	159	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	1090	N
Static axial stiffness, preload class A		266	N/µm
Preload class B	G_B	2180	N
Static axial stiffness, preload class B		363	N/µm
Preload class C	G_C	4360	N
Static axial stiffness, preload class C		509	N/µm
Preload class D	G_D	8720	N
Static axial stiffness, preload class D		741	N/µm
Calculation factors
Calculation factor	f	1.27
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.09
Calculation factor	f_2D	1.15
Calculation factor	f_HC	1
Calculation factor	f₀	16.7

Mass

Mass bearing

12.9

Model Number: 71956 CD/P4A
Inner Diameter：280mm Outer Diameter：380mm Width：46mm
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：2025-12-09
Application:Wire grinder,plastic molding,axle lathe,other accessories,Special Equipment,Equipment,Security Equipment,medical treatment,stacker lift platform,teaching equipment,machine tool spindle
Similar models:71956 ACD/P4A 71956 CD/P4A 71956 ACD/HCP4A 71956 CD/HCP4A
BEARING POWER International Trading Co.,Ltd. specialize in 71956CD/P4A products，there is large inventory of SKF 71956 CD/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 71956 CD/P4A Which SKF 71956CD/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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407254	670	-	-	Seals
FYWK 1. YTA	25.4	-	-	Bearings, units and housings
NATR 12 X	12	32	15	Bearings, units and housings
OH 3960 H	280	300	140	Bearings, units and housings
PRM 353920	35	39	20	Bearings, units and housings
SALA 70 TXE-2LS	70	-	49	Bearings, units and housings
SYE 2 11/16-3	68.2625	-	-	Bearings, units and housings
YEL 207-105-2F		72		Bearings, units and housings

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