Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71921 CD/HCP4AH1

71921 CD/HCP4AH1

Dimensions

d		105	mm
D		145	mm
B		20	mm
d₁		117.3	mm
d₂		117.3	mm
D₁		132.7	mm
K		0.5	mm
C₁		5.46	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		26.8	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	61.8	kN
Basic static load rating	C₀	69.5	kN
Fatigue load limit	P_u	2.6	kN
Attainable speed for grease lubrication		10000	r/min
Attainable speed for oil-air lubrication		16000	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	230	N
Static axial stiffness, preload class A		122	N/µm
Preload class B	G_B	460	N
Static axial stiffness, preload class B		168	N/µm
Preload class C	G_C	920	N
Static axial stiffness, preload class C		239	N/µm
Preload class D	G_D	1840	N
Static axial stiffness, preload class D		350	N/µm
Calculation factors
Calculation factor	f	1.25
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.07
Calculation factor	f_2C	1.12
Calculation factor	f_2D	1.18
Calculation factor	f_HC	1.04
Calculation factor	f₀	16.4

Mass

Mass bearing

0.7

Model Number: 71921 CD/HCP4AH1
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:Hydraulic Couplings,Technical Equipment,Spectrum Products,glass,air purification,Insect Capture,Forming mold,electronic components,chemical instruments,electromagnet,Other machinery
Similar models:S71921 CD/P4A 71921 CD/P4A 71921 ACD/HCP4AL 71921 CD/P4AH1 S71921 ACD/HCP4A 71921 ACD/P4AL 71921 ACD/P4AH1 71921 CD/P4AL 71921 CD/HCP4A 71921 CD/HCP4AH1
BEARING POWER International Trading Co.,Ltd. specialize in 71921CD/HCP4AH1 products，there is large inventory of SKF 71921 CD/HCP4AH1 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 CD/HCP4AH1 Which SKF 71921CD/HCP4AH1 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
150x180x15 HMS5 V	150	180	15	Seals
25714	65.1002	95.28	11.13	Seals
36172	92.075	114.3	7.4676	Seals
4580/4535	50.8	104.775	39.688	Bearings, units and housings
550 VE R	536	-	-	Seals
600 VL V	540	-	-	Seals
61904-2RZ	20	37	9	Bearings, units and housings
BGSB 358371	508	762	139.7	Bearings, units and housings
EE 285160/285226	406.4	574.675	76.2	Bearings, units and housings
FYRP 3 15/16	100.0125	-	-	Bearings, units and housings
PBM 182530 M1G1	18	25	30	Bearings, units and housings
SAFS 22520 x 3.3/8 TLC	85.725	-	-	Bearings, units and housings

Purchase the SKF 71921 CD/HCP4AH1 Please fill in the following

Hot number： 12582 18671 2206 EKTN9 26625 44630 540 VRME R 55x100x12 HMS5 V 87901 8786 FBSA 210 A/QFC FSAF 23024 KAT x 4.1/8 SNL 3176 TURA SNW 3024x4.3/16 SSAFS 22217 TLC W 61811-2RS1