Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71912 CB/HCP4AL

71912 CB/HCP4AL

Dimensions

d		60	mm
D		85	mm
B		13	mm
d₁		68.94	mm
d₂		67.73	mm
D₂		78.36	mm
b		2	mm
C₁		6.5	mm
C₂		3.8	mm
C₃		1.7	mm
r_1,2	min.	1	mm
r_3,4	min.	0.3	mm
a		19.5	mm

Abutment dimensions

d_a	min.	64.6	mm
d_b	min.	64.6	mm
D_a	max.	80.4	mm
D_b	max.	83	mm
r_a	max.	1	mm
r_b	max.	0.3	mm
d_n		69.8	mm

Calculation data

Basic dynamic load rating	C	14	kN
Basic static load rating	C₀	14.6	kN
Fatigue load limit	P_u	0.375	kN
Attainable speed for grease lubrication		26000	r/min
Attainable speed for oil-air lubrication		40000	r/min
Ball diameter	D_w	5.556	mm
Number of balls	z	30
Reference grease quantity	G_ref	2.77	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	34	N
Static axial stiffness, preload class A		40	N/µm
Preload class B	G_B	68	N
Static axial stiffness, preload class B		53	N/µm
Preload class C	G_C	205	N
Static axial stiffness, preload class C		85	N/µm
Calculation factors
Calculation factor	f	1.11
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.03
Calculation factor	f_2C	1.08
Calculation factor	f_HC	1.01
Calculation factor	f₀	9.8

Mass

Mass bearing

0.18

Model Number: 71912 CB/HCP4AL
Inner Diameter：60mm Outer Diameter：85mm Width：13mm
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:Spectrum Products,Insect Count,Polymer,cooling system,extruder,spring industry,Display Devices,PVC,Anesthetic Equipment,spreader series,wheel lathe
Similar models:71912 ACD/P4AL S71912 CB/P4A 71912 CD/HCP4A 71912 ACE/P4AL 71912 ACB/P4AL S71912 ACE/P4A 71912 ACE/HCP4AL 71912 CD/P4A 71912 ACE/HCP4A 71912 ACE/P4A
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Model No.	Inner Diameter	Outer Diameter	Width	Type
12481	31.75	50.8	6.35	Seals
15677	39.7002	65.05	7.95	Seals
BD-23240 CCK/W33-AH 3240	190	360	128	Bearings, units and housings
24152 CC/W33	260	440	180	Bearings, units and housings
6006-Z	30	55	13	Bearings, units and housings
HJ 219 EC	95	120.5	14	Bearings, units and housings
NCF 3008 CV	40	68	21	Bearings, units and housings
NK 32/20 TN	32	42	20	Bearings, units and housings
NU 218 ECM	90	160	30	Bearings, units and housings
S7021 CD/HCP4A	105	160	26	Bearings, units and housings
WS 81107	35		3.5	Bearings, units and housings
Z 202	15	-	4	Seals

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