Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71930 CD/HCP4A

71930 CD/HCP4A

Dimensions

d		150	mm
D		210	mm
B		28	mm
d₁		168.5	mm
d₂		168.5	mm
D₁		191.5	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_b	min.	159	mm
D_a	max.	201	mm
D_b	max.	205	mm
r_a	max.	2	mm
r_b	max.	1	mm
d_n		173.5	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
Attainable speed for oil-air lubrication		11000	r/min
Ball diameter	D_w	19.05	mm
Number of balls	z	23
Reference grease quantity	G_ref	35	cm³
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

2.08

Model Number: 71930 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：2025-12-09
Application:forklift industry,Plastic molding,Workpiece,Medical printer,Insect Capture,small appliances,teaching equipment,lifting tackle,laser devices,Cutting Machine,Die
Similar models:71930 ACD/P4AH1 71930 CD/HCP4AL 71930 ACD/HCP4AH1 71930 CD/HCP4AH1 71930 CD/P4AL 71930 ACD/HCP4A S71930 ACD/P4A S71930 CD/HCP4A 71930 ACD/P4A 71930 CD/P4AH1
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Hot number： 16003/HR22T2 18565 22313 EK 2310 K + H 2310 25x62x10 HMSA10 V 36185 FSAF 22611 x 1.7/8 HK 0408 LR 25x30x12.5 NCF 2230 ECJB NUP 221 ECML PSM 061006 A51 PSM 152030 A51 SAF 1517 x 3 T SNW 3032x5.3/8