Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71918 ACB/HCP4A

71918 ACB/HCP4A

Dimensions

d		90	mm
D		125	mm
B		18	mm
d₁		103	mm
d₂		101.4	mm
D₂		115	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		39	mm

Abutment dimensions

d_a	min.	96	mm
d_b	min.	96	mm
D_a	max.	119	mm
D_b	max.	121.8	mm
r_a	max.	1	mm
r_b	max.	0.6	mm
d_n		103.9	mm

Calculation data

Basic dynamic load rating	C	22.5	kN
Basic static load rating	C₀	26.5	kN
Fatigue load limit	P_u	0.68	kN
Attainable speed for grease lubrication		15000	r/min
Attainable speed for oil-air lubrication		22000	r/min
Ball diameter	D_w	7.144	mm
Number of balls	z	36
Reference grease quantity	G_ref	7.37	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	100	N
Static axial stiffness, preload class A		156	N/µm
Preload class B	G_B	200	N
Static axial stiffness, preload class B		199	N/µm
Preload class C	G_C	600	N
Static axial stiffness, preload class C		302	N/µm
Calculation factors
Calculation factor	f	1.12
Calculation factor	f₁	0.99
Calculation factor	f_2A	1
Calculation factor	f_2B	1.02
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

0.56

Model Number: 71918 ACB/HCP4A
Inner Diameter：90mm Outer Diameter：125mm 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：2026-06-24
Application:Cleaning equipment,test laboratory equipment and accessories,Grinding and polishing equipment,Machine Tool Accessories,sterilizers,Insect Count,chamfering machine etc,switch,expectoration machine,blood cell reagent,flow control valve
Similar models:71918 CE/P4AL S71918 ACB/P4A 71918 CE/HCP4A 71918 ACD/P4AL 71918 ACB/P4A 71918 CD/P4AL S71918 CD/HCP4A 71918 CD/HCP4AL 71918 CD/P4A 71918 ACE/P4AL
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Model No. Inner Diameter Outer Diameter Width Type

17761
240/500 ECA/W33
P 62 R-25 TF
PF 35 FM
S7000 CD/P4A

Purchase the SKF 71918 ACB/HCP4A Please fill in the following

Hot number： 12383 1850554 BD-22352 CCK/W33-AOH 2352 G BT2B 328020 HM 3096 IR 8x12x10.5 K 7x10x8 TN NRT 80 B PBMF 220240140 M1G1 PCM 283225 E PWM 10512080 SAF 22517 T SNP 3064x11.7/16 SIJ 50 ES W 639/1.5-2Z

Model No.	Inner Diameter	Outer Diameter	Width	Type
17761
240/500 ECA/W33
P 62 R-25 TF
PF 35 FM
S7000 CD/P4A