Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71917 ACE/HCP4A

71917 ACE/HCP4A

Dimensions

d		85	mm
D		120	mm
B		18	mm
d₁		96	mm
d₂		92.9	mm
D₁		109.22	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		34.1	mm

Abutment dimensions

d_a	min.	91	mm
d_b	min.	88.2	mm
D_a	max.	114	mm
D_b	max.	116.8	mm
r_a	max.	1	mm
r_b	max.	0.6	mm
d_n		98.6	mm

Calculation data

Basic dynamic load rating	C	28.1	kN
Basic static load rating	C₀	22	kN
Fatigue load limit	P_u	0.9	kN
Attainable speed for grease lubrication		16500	r/min
Attainable speed for oil-air lubrication		25000	r/min
Ball diameter	D_w	11.112	mm
Number of balls	z	23
Reference grease quantity	G_ref	7	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	255	N
Static axial stiffness, preload class A		175	N/µm
Preload class B	G_B	765	N
Static axial stiffness, preload class B		263	N/µm
Preload class C	G_C	1529	N
Static axial stiffness, preload class C		346	N/µm
Calculation factors
Calculation factor	f	1.16
Calculation factor	f₁	0.98
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.08
Calculation factor	f_HC	1.01
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

0.42

Model Number: 71917 ACE/HCP4A
Inner Diameter：85mm Outer Diameter：120mm Width：18mm
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：2026-06-25
Application:small appliances,paint paint,printing machinery,oral medical device,car instrument,pneumatic,Pump,Machine Tool Accessories,Spectrum Products,ignition system,lifting tackle
Similar models:71917 CB/P4A 71917 CD/HCP4AH1 71917 ACB/HCP4AL 71917 CB/HCP4A S71917 CE/P4A S71917 ACD/P4A 71917 CD/HCP4A 71917 ACE/HCP4AL S71917 CB/P4A 71917 CD/P4A
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Model No. Inner Diameter Outer Diameter Width Type

6012 NR
85015
FYWK 50 LTHR
SAFS 22534 x 5.13/16 T
SD 37x47x4

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Hot number： 1220 VRME R 32228 39585/39520 61909-2RZ 624-Z 7009 CE/HCP4AL 7010 CE/P4A 71905 CE/P4AH BT4B 329007/HA1 BD-C 2217 K-AHX 317 IR 12x15x12.5 NKI 55/25 TN OKC 330 SSAFS 23056 KATLC x 10.7/16 SY 506 M

Model No.	Inner Diameter	Outer Diameter	Width	Type
6012 NR
85015
FYWK 50 LTHR
SAFS 22534 x 5.13/16 T
SD 37x47x4