Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71934 CD/HCP4A

71934 CD/HCP4A

Dimensions

d		170	mm
D		230	mm
B		28	mm
d₁		188.5	mm
d₂		188.5	mm
D₁		211.5	mm
r_1,2	min.	2	mm
r_3,4	min.	1	mm
a		40.9	mm

Abutment dimensions

d_a	min.	179	mm
d_b	min.	179	mm
D_a	max.	221	mm
D_b	max.	225	mm
r_a	max.	2	mm
r_b	max.	1	mm
d_n		193.5	mm

Calculation data

Basic dynamic load rating	C	133	kN
Basic static load rating	C₀	166	kN
Fatigue load limit	P_u	5.1	kN
Attainable speed for grease lubrication		7000	r/min
Attainable speed for oil-air lubrication		10000	r/min
Ball diameter	D_w	19.05	mm
Number of balls	z	29
Reference grease quantity	G_ref	36	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	500	N
Static axial stiffness, preload class A		190	N/µm
Preload class B	G_B	1000	N
Static axial stiffness, preload class B		262	N/µm
Preload class C	G_C	2000	N
Static axial stiffness, preload class C		371	N/µm
Preload class D	G_D	4000	N
Static axial stiffness, preload class D		547	N/µm
Calculation factors
Calculation factor	f	1.3
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	16.5

Mass

Mass bearing

2.34

Model Number: 71934 CD/HCP4A
Inner Diameter：170mm Outer Diameter：230mm 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：2026-04-18
Application:cleaners,shoe-making machinery,equipment,atomizer class,Industrial,comprehensive experiment,heating fans,Anesthetic Equipment,Solenoid Valves,Broadcasting System,hydraulic pump
Similar models:71934 ACD/P4AH1 71934 CD/HCP4AH1 71934 CD/P4AH1 71934 ACD/P4A 71934 ACD/HCP4AH1 71934 CD/HCP4A 71934 ACD/HCP4A
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21x40x7 HMSA10 RG	21	40	7	Seals
312	60	130	31	Bearings, units and housings
316198	500	620	45	Bearings, units and housings
85535	-	-	25.4	Seals
BA 4	4	10	4	Bearings, units and housings
HA 311 E	49.2125	75	45	Bearings, units and housings
HE 2338	171.45	240	169	Bearings, units and housings
NU 1060 MA	300	460	74	Bearings, units and housings
PCM 808560 M	80	85	60	Bearings, units and housings
S7017 ACB/HCP4A	85	130	22	Bearings, units and housings
SCF 40 ES	40	-	28	Bearings, units and housings

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