Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S71930 CD/HCP4A

S71930 CD/HCP4A

Dimensions

d		150	mm
D		210	mm
B		28	mm
d₁		168.5	mm
d₂		168.5	mm
D₂		195.15	mm
r_1,2	min.	2	mm
r_3,4	min.	1	mm
a		38.2	mm

Abutment dimensions

d_a	min.	159	mm
d_a	max.	167.7	mm
d_b	min.	159	mm
d_b	max.	167.7	mm
D_a	max.	201	mm
D_b	max.	205	mm
r_a	max.	2	mm
r_b	max.	1	mm

Calculation data

Basic dynamic load rating	C	114	kN
Basic static load rating	C₀	132	kN
Fatigue load limit	P_u	4.15	kN
Attainable speed for grease lubrication		7500	r/min
Ball diameter	D_w	19.05	mm
Number of balls	z	23
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	470	N
Static axial stiffness, preload class A		158	N/µm
Preload class B	G_B	940	N
Static axial stiffness, preload class B		216	N/µm
Preload class C	G_C	1880	N
Static axial stiffness, preload class C		306	N/µm
Preload class D	G_D	3760	N
Static axial stiffness, preload class D		450	N/µm
Calculation factors
Calculation factor	f	1.24
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	16.2

Mass

Mass bearing

2.1

Model Number: S71930 CD/HCP4A
Inner Diameter：150mm Outer Diameter：210mm Width：28mm
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:switch,aerial work platform,Pest Monitoring,hot and cold box,teaching equipment,tapered grinder,outdoor equipment,noise reduction equipment,vacuum filter,construction machinery and equipment,gantry processing
Similar models:S71930 ACD/HCP4A 71930 CD/HCP4AH1 71930 ACD/P4A S71930 ACD/P4A 71930 CD/HCP4A S71930 CD/HCP4A 71930 CD/HCP4AL 71930 ACD/HCP4AL 71930 ACD/HCP4AH1 71930 CD/P4AH1
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Model No.	Inner Diameter	Outer Diameter	Width	Type
218-Z	90	160	30	Bearings, units and housings
21x40x7 HMSA10 V	21	40	7	Seals
25580/25522	44.45	82.931	26.988	Bearings, units and housings
390x450x25 HDS1 R	390	450	25	Seals
71912 CD/HCP4A	60	85	13	Bearings, units and housings
BTW 170 CM/SP	170	260	108	Bearings, units and housings
NU 1014 ECP	70	110	20	Bearings, units and housings
NU 204 ECML	20	47	14	Bearings, units and housings
NU 311 ECML	55	120	29	Bearings, units and housings
SAFS 22520-11 x 3.3/8 TLC	85.725	-	-	Bearings, units and housings
SSAFS 22518 x 3.1/16	77.7875	-	-	Bearings, units and housings
W 61801	12	21	5	Bearings, units and housings

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Hot number： 137570 331590 470831 60x80x7 HMS5 V 7208 ACCBM 7217 CD/P4A BK 1514 RS NJ 313 ECPH PCM 10010560 M PSM 182212 A51 QJ 315 N2PHAS SE 211 SIA 50 ESX-2LS SNW 3040x7-7/16 SYJ 1.3/4 TF