Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71905 ACD/HCP4A

71905 ACD/HCP4A

Dimensions

d		25	mm
D		42	mm
B		9	mm
d₁		30.6	mm
d₂		30.6	mm
D₁		36.4	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.2	mm
a		12.4	mm

Abutment dimensions

d_a	min.	27	mm
d_b	min.	27	mm
D_a	max.	40	mm
D_b	max.	40.6	mm
r_a	max.	0.3	mm
r_b	max.	0.2	mm
d_n		31.8	mm

Calculation data

Basic dynamic load rating	C	6.37	kN
Basic static load rating	C₀	3.8	kN
Fatigue load limit	P_u	0.16	kN
Attainable speed for grease lubrication		38000	r/min
Attainable speed for oil-air lubrication		56000	r/min
Ball diameter	D_w	4.762	mm
Number of balls	z	18
Reference grease quantity	G_ref	0.54	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	40	N
Static axial stiffness, preload class A		66	N/µm
Preload class B	G_B	80	N
Static axial stiffness, preload class B		86	N/µm
Preload class C	G_C	160	N
Static axial stiffness, preload class C		112	N/µm
Preload class D	G_D	320	N
Static axial stiffness, preload class D		149	N/µm
Calculation factors
Calculation factor	f	1.07
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

0.039

Model Number: 71905 ACD/HCP4A
Inner Diameter：25mm Outer Diameter：42mm Width：9mm
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：2026-04-16
Application:coupling type,defogging and degreasing,Laser Measurements,electromyography machine,extruder,die casting mold,ECG,Pest Monitoring,,sewage pump,packaging machinery
Similar models:71905 CE/P4A 71905 CD/P4A 71905 CD/HCP4A 71905 ACE/P4AH S71905 CD/HCP4A 71905 CE/HCP4AL 71905 ACD/HCP4A 71905 CE/P4AL S71905 CE/HCP4A 71905 ACE/HCP4AH
BEARING POWER International Trading Co.,Ltd. specialize in 71905ACD/HCP4A products，there is large inventory of SKF 71905 ACD/HCP4A Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 71905 ACD/HCP4A Which SKF 71905ACD/HCP4A 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
180x210x15 HMS5 RG	180	210	15	Seals
3312 A	60	130	54	Bearings, units and housings
51140 M	200	250	37	Bearings, units and housings
53216 + U 216	80	115	29.5	Bearings, units and housings
71914 ACB/HCP4A	70	100	16	Bearings, units and housings
950 VA R	865	-	-	Seals
BSA 307 C	35	80	21	Bearings, units and housings
K 18x24x12	18	24	12	Bearings, units and housings
NU 2313 ECPH	65	140	48	Bearings, units and housings
S71912 CB/HCP4A	60	85	13	Bearings, units and housings
SAF 22234 TLC	170	-	-	Bearings, units and housings
SNL 4080 G	400	-	-	Bearings, units and housings

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