Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S71918 ACD/P4A

S71918 ACD/P4A

Dimensions

d		90	mm
D		125	mm
B		18	mm
d₁		100.8	mm
d₂		100.8	mm
D₂		117.1	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		34.2	mm

Abutment dimensions

d_a	min.	96	mm
d_a	max.	100.2	mm
d_b	min.	96	mm
d_b	max.	100.2	mm
D_a	max.	119	mm
D_b	max.	121	mm
r_a	max.	1	mm
r_b	max.	0.6	mm

Calculation data

Basic dynamic load rating	C	44.2	kN
Basic static load rating	C₀	48	kN
Fatigue load limit	P_u	1.96	kN
Attainable speed for grease lubrication		8500	r/min
Ball diameter	D_w	11.112	mm
Number of balls	z	26
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	280	N
Static axial stiffness, preload class A		224	N/µm
Preload class B	G_B	560	N
Static axial stiffness, preload class B		293	N/µm
Preload class C	G_C	1120	N
Static axial stiffness, preload class C		392	N/µm
Preload class D	G_D	2240	N
Static axial stiffness, preload class D		536	N/µm
Calculation factors
Calculation factor	f	1.23
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_2D	1.14
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

0.57

Model Number: S71918 ACD/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:coal,milling head plug,Laser Cutting,electronic components,car steering pin,Industrial,packaging materials,steam Hydraulic control element,clean stationery,tobacco machinery,baler
Similar models:S71918 ACB/HCP4A 71918 ACE/HCP4AL 71918 CE/HCP4A S71918 CD/P4A 71918 ACB/HCP4A 71918 ACB/P4A 71918 CE/P4AH1 71918 ACD/P4AH1 71918 ACD/HCP4AL S71918 CB/HCP4A
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Model No. Inner Diameter Outer Diameter Width Type

400604
42426
77506
SY 2. TF/VA201
W 6004-2RS1

Purchase the SKF S71918 ACD/P4A Please fill in the following

Hot number： 30x40x7 CRW1 R 32012T65 X/DB 32395 45x65x7 HMSA7P2 R 61812 695x770x30 HDS1 R 7089 7226 CD/P4A BSA 307 C D/W R4 NUP 2226 ECML OKBS 122 PSM 303825 A51 SNL 3148 ATURT YAR 209-111-2FW/VA228

Model No.	Inner Diameter	Outer Diameter	Width	Type
400604
42426
77506
SY 2. TF/VA201
W 6004-2RS1