Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71918 ACE/P4A

71918 ACE/P4A

Dimensions

d		90	mm
D		125	mm
B		18	mm
d₁		101	mm
d₂		97.9	mm
D₁		114.22	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		35.9	mm

Abutment dimensions

d_a	min.	96	mm
d_b	min.	93.2	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		103.5	mm

Calculation data

Basic dynamic load rating	C	28.6	kN
Basic static load rating	C₀	23.2	kN
Fatigue load limit	P_u	0.915	kN
Attainable speed for grease lubrication		13000	r/min
Attainable speed for oil-air lubrication		20000	r/min
Ball diameter	D_w	11.112	mm
Number of balls	z	24
Reference grease quantity	G_ref	7	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	260	N
Static axial stiffness, preload class A		164	N/µm
Preload class B	G_B	780	N
Static axial stiffness, preload class B		247	N/µm
Preload class C	G_C	1560	N
Static axial stiffness, preload class C		324	N/µm
Calculation factors
Calculation factor	f	1.19
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

0.54

Model Number: 71918 ACE/P4A
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：2026-06-25
Application:economic mold,car and accessories,vertical processing,Broadcasting System,vertical sawing machine,Blood coagulation reagent,flow control valve,Cylinder Micro,medical equipment,ECG,Logistics Equipment
Similar models:71918 ACE/HCP4AL 71918 ACD/HCP4AL 71918 ACB/P4AL 71918 CD/P4A S71918 CB/HCP4A 71918 ACE/P4AL 71918 ACD/P4AH1 71918 ACB/HCP4A 71918 CD/HCP4AL 71918 CE/HCP4A
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Model No. Inner Diameter Outer Diameter Width Type

21308 EK
32396
65021
71924 CD/P4A
SY 35 TDW

Purchase the SKF 71918 ACE/P4A Please fill in the following

Hot number： 19844 2209 EKTN9 + H 309 524909 6004-RSH 6032 87246 BD-C 3130 K-H 3130 L FYAWK 1.3/8 LTA FYR 3 1/2-3 NCF 29/600 V NJ 2208 ECJ NJ 314 ECML PBMF 061206 M1 SAW 23518 x 3.1/4 T SY 25 TR

Model No.	Inner Diameter	Outer Diameter	Width	Type
21308 EK
32396
65021
71924 CD/P4A
SY 35 TDW