Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 7021 CD/P4AH1

7021 CD/P4AH1

Dimensions

d		105	mm
D		160	mm
B		26	mm
d₁		121.9	mm
d₂		121.9	mm
D₁		143.1	mm
K		0.5	mm
C₁		6.92	mm
r_1,2	min.	2	mm
r_3,4	min.	1	mm
a		30.8	mm

Abutment dimensions

d_a	min.	114	mm
d_b	min.	114	mm
D_a	max.	151	mm
D_b	max.	155	mm
r_a	max.	2	mm
r_b	max.	1	mm
d_n		125.6	mm

Calculation data

Basic dynamic load rating	C	95.6	kN
Basic static load rating	C₀	96.5	kN
Fatigue load limit	P_u	3.6	kN
Attainable speed for grease lubrication		8000	r/min
Attainable speed for oil-air lubrication		13000	r/min
Ball diameter	D_w	17.462	mm
Number of balls	z	21
Reference grease quantity	G_ref	20.4	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	360	N
Static axial stiffness, preload class A		117	N/µm
Preload class B	G_B	720	N
Static axial stiffness, preload class B		159	N/µm
Preload class C	G_C	1440	N
Static axial stiffness, preload class C		223	N/µm
Preload class D	G_D	2880	N
Static axial stiffness, preload class D		324	N/µm
Calculation factors
Calculation factor	f	1.15
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.02
Calculation factor	f_2C	1.05
Calculation factor	f_2D	1.09
Calculation factor	f_HC	1
Calculation factor	f₀	15.7

Mass

Mass bearing

1.59

Model Number: 7021 CD/P4AH1
Inner Diameter：105mm Outer Diameter：160mm Width：26mm
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：2026-04-16
Application:Food testing,Storage Device,marine test,agriculture,Laser Measurements,relay,Microwave Equipment,multi-knife lathe,mechanical annex,teaching equipment,stacker lift platform
Similar models:7021 CD/P4A 7021 CD/HCP4AL S7021 ACD/HCP4A 7021 CD/HCP4AH1 S7021 CD/HCP4A 7021 ACD/HCP4AH1 7021 ACD/P4A 7021 ACD/P4AL 7021 ACD/P4AH1 7021 CD/HCP4A
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Model No.	Inner Diameter	Outer Diameter	Width	Type
17771	44.45	100	7.95	Seals
17x40x7 HMS5 RG	17	40	7	Seals
330903 A	901.7	1295.4	-	Bearings, units and housings
38x60x10 HMSA10 V	38	60	10	Seals
55x68x8 HMS5 V	55	68	8	Seals
7019 ACE/HCP4AL	95	145	24	Bearings, units and housings
71872 ACM	360	440	38	Bearings, units and housings
99188	47.625	55.9562	10.541	Seals
BMO-6204/048S2/UA008A	20	47	20.2	Bearings, units and housings
S7006 FW/HC	30	55	13	Bearings, units and housings
S7015 ACD/HCP4A	75	115	20	Bearings, units and housings
SAF 1611 x 1.7/8 T	47.625	-	-	Bearings, units and housings

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Hot number： 404504 6208-2RS1 99852 81272 M 99849 N 308 ECM OKC 200 NCF 2912 CV NJ 411 NU 2317 ECM PCZ 0606 M PL 560 S71920 CD/HCP4A SAFS 22520-11 x 3.3/8 T SNW 44x7.1/2