Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S71921 ACD/HCP4A

S71921 ACD/HCP4A

Dimensions

d		105	mm
D		145	mm
B		20	mm
d₁		117.3	mm
d₂		117.3	mm
D₂		135.65	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		39.3	mm

Abutment dimensions

d_a	min.	111	mm
d_a	max.	116.7	mm
d_b	min.	111	mm
d_b	max.	116.7	mm
D_a	max.	139	mm
D_b	max.	141	mm
r_a	max.	1	mm
r_b	max.	0.6	mm

Calculation data

Basic dynamic load rating	C	57.2	kN
Basic static load rating	C₀	65.5	kN
Fatigue load limit	P_u	2.5	kN
Attainable speed for grease lubrication		9000	r/min
Ball diameter	D_w	12.7	mm
Number of balls	z	27
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	360	N
Static axial stiffness, preload class A		292	N/µm
Preload class B	G_B	720	N
Static axial stiffness, preload class B		384	N/µm
Preload class C	G_C	1440	N
Static axial stiffness, preload class C		514	N/µm
Preload class D	G_D	2880	N
Static axial stiffness, preload class D		703	N/µm
Calculation factors
Calculation factor	f	1.25
Calculation factor	f₁	0.98
Calculation factor	f_2A	1
Calculation factor	f_2B	1.07
Calculation factor	f_2C	1.12
Calculation factor	f_2D	1.17
Calculation factor	f_HC	1.04
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

0.71

Model Number: S71921 ACD/HCP4A
Inner Diameter：105mm Outer Diameter：145mm Width：20mm
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：2026-04-17
Application:top industry,electric hydraulic lifting platform,paint paint,large agricultural machinery,insect experimental analysis instrument,gantry processing,garden machinery,medical equipment,dynamic blood pressure,Pest Monitoring,tobacco machinery
Similar models:S71921 ACD/P4A 71921 ACD/P4AL S71921 ACD/HCP4A S71921 CD/P4A 71921 ACD/P4A 71921 CD/P4AL 71921 CD/HCP4AH1 71921 CD/HCP4A 71921 ACD/P4AH1 S71921 CD/HCP4A
BEARING POWER International Trading Co.,Ltd. specialize in S71921ACD/HCP4A products，there is large inventory of SKF S71921 ACD/HCP4A Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the S71921 ACD/HCP4A Which SKF S71921ACD/HCP4A is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express. Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

Model No.	Inner Diameter	Outer Diameter	Width	Type
22x45x7 HMS5 V	22	45	7	Seals
6318-2RS1	90	190	43	Bearings, units and housings
82527	209.55	235	12.7	Seals
C 31/710 KMB	710	1150	345	Bearings, units and housings
FY 512 M	-	-	-	Bearings, units and housings
HN 1816	18	24	16	Bearings, units and housings
NATV 15 PPA	15	35	18	Bearings, units and housings
W 6008-2RS1/VP311	40	68	15	Bearings, units and housings
SNL 520-617	88.9	-	-	Bearings, units and housings
SNW 22x4	101.6	110	81.1784	Bearings, units and housings
SSAFS 22517 x 2.13/16 TLC	71.4375	-	-	Bearings, units and housings
WS 89317	85		13.5	Bearings, units and housings

Purchase the SKF S71921 ACD/HCP4A Please fill in the following

Hot number： 19x35x7 CRW1 R 23222 CCK/W33 314486 A 315835 A 35x52x8 HMSA10 V 950 VE R BT4B 328350 G/HA1 FYWK 504 Y HM 46 T NU 226 ECP PCM 121415 M PSM 253220 A51 RNAO 40x50x17 SAF 1220 SAF 22520 x 3.5/16 T