Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 7218 ACD/P4A

7218 ACD/P4A

Dimensions

d		90	mm
D		160	mm
B		30	mm
d₁		111.6	mm
d₂		111.6	mm
D₁		138.4	mm
r_1,2	min.	2	mm
r_3,4	min.	1	mm
a		44.3	mm

Abutment dimensions

d_a	min.	101	mm
d_b	min.	101	mm
D_a	max.	149	mm
D_b	max.	154.4	mm
r_a	max.	2	mm
r_b	max.	1	mm
d_n		117.5	mm

Calculation data

Basic dynamic load rating	C	121	kN
Basic static load rating	C₀	106	kN
Fatigue load limit	P_u	4.05	kN
Attainable speed for grease lubrication		7500	r/min
Attainable speed for oil-air lubrication		12000	r/min
Ball diameter	D_w	22.225	mm
Number of balls	z	16
Reference grease quantity	G_ref	27.765	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	750	N
Static axial stiffness, preload class A		273	N/µm
Preload class B	G_B	1500	N
Static axial stiffness, preload class B		355	N/µm
Preload class C	G_C	3000	N
Static axial stiffness, preload class C		469	N/µm
Preload class D	G_D	6000	N
Static axial stiffness, preload class D		632	N/µm
Calculation factors
Calculation factor	f	1.09
Calculation factor	f₁	0.99
Calculation factor	f_2A	1
Calculation factor	f_2B	1.01
Calculation factor	f_2C	1.02
Calculation factor	f_2D	1.05
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

2.27

Model Number: 7218 ACD/P4A
Inner Diameter：90mm Outer Diameter：160mm Width：30mm
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:Food testing,Broadcasting System,ventilation equipment,ultra-quiet generators,Storage Tool,motor,tooth filling,woodworking machinery,Doppler,glass,water protection
Similar models:7218 BEGAF 7218 BECBM 7218 BEGAM 7218 BECBY 7218 BECBP 7218 BECCM 7218 CD/P4A 7218 CD/HCP4A 7218 ACD/P4A 7218 BECBJ
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Model No. Inner Diameter Outer Diameter Width Type

11352
331978 BG
6310-RSH
W 00
W 34

Purchase the SKF 7218 ACD/P4A Please fill in the following

Hot number： 306474 D 38678 430x480x16 HDS2 R 47x70x10 HMSA10 RG 6209-Z 7021 CD/HCP4A 708 ACE/HCP4AH TQO design NCF 3010 CV OKCS 210 SAF 22526 T SAFS 22518 x 3.1/4 TLC SNL 516 TURU W 619/8-2RZ W 61902-2RZ

Model No.	Inner Diameter	Outer Diameter	Width	Type
11352
331978 BG
6310-RSH
W 00
W 34