Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71921 ACD/HCP4AL

71921 ACD/HCP4AL

Dimensions

d		105	mm
D		145	mm
B		20	mm
d₁		117.3	mm
d₂		117.3	mm
D₁		132.7	mm
b		2.3	mm
C₁		10.9	mm
C₂		3.9	mm
C₃		3.2	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_b	min.	111	mm
D_a	max.	139	mm
D_b	max.	141	mm
r_a	max.	1	mm
r_b	max.	0.6	mm
d_n		120.6	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
Attainable speed for oil-air lubrication		15000	r/min
Ball diameter	D_w	12.7	mm
Number of balls	z	27
Reference grease quantity	G_ref	11.1	cm³
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

0.7

Model Number: 71921 ACD/HCP4AL
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：2025-12-09
Application:industrial supplies,scientific instruments,Laser Measurements,casting embedding,chuck industry,Laser Cutting,Hydraulic Equipment,preservation equipment,industrial equipment,flexible processing,Storage Tool
Similar models:71921 ACD/P4A S71921 ACD/P4A 71921 ACD/P4AH1 71921 CD/P4A 71921 ACD/HCP4AL 71921 CD/P4AL 71921 ACD/HCP4AH1 71921 CD/HCP4A S71921 ACD/HCP4A 71921 ACD/P4AL
BEARING POWER International Trading Co.,Ltd. specialize in 71921ACD/HCP4AL products，there is large inventory of SKF 71921 ACD/HCP4AL Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 71921 ACD/HCP4AL Which SKF 71921ACD/HCP4AL 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
126x147x11 CRSA1 R	126	147	11	Seals
15532	39.7002	57.15	6.35	Seals
240/850 ECAK30/W33	850	1220	365	Bearings, units and housings
BD-23224-2CS5K/VT143-H 2324 L	110	215	76	Bearings, units and housings
28276	71.4502	107.95	11.13	Seals
7016 ACD/HCP4A	80	125	22	Bearings, units and housings
71930 CD/HCP4AL	150	210	28	Bearings, units and housings
7214 BECBP	70	125	24	Bearings, units and housings
IR 40x48x22	40	48	22	Bearings, units and housings
PWM 200220250	200	220	250	Bearings, units and housings
SHT 19	19	-	-	Coupling systems
SIJ 25 ES	25	-	20	Bearings, units and housings

Purchase the SKF 71921 ACD/HCP4AL Please fill in the following

Hot number： 22316 EJA/VA405 231/710 CAK/W33 BD-23292 CAK/W33-OH 3292 H 414253 42x72x8 CRW1 R 53316 + U 316 71906 ACE/P4AL GEH 25 ES-2LS NA 4907.2RS PSM 809580 A51 SIKB 5 F SYF 509 TU 506 M W 61806 R W 634 R-2RS1