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

71905 ACE/HCP4A

Dimensions

d		25	mm
D		42	mm
B		9	mm
d₁		30.7	mm
d₂		29.4	mm
D₁		36.39	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.15	mm
a		12.8	mm

Abutment dimensions

d_a	min.	27	mm
d_b	min.	27	mm
D_a	max.	40	mm
D_b	max.	41.2	mm
r_a	max.	0.3	mm
r_b	max.	0.15	mm
d_n		31.8	mm

Calculation data

Basic dynamic load rating	C	4.94	kN
Basic static load rating	C₀	2.7	kN
Fatigue load limit	P_u	0.114	kN
Attainable speed for grease lubrication		52000	r/min
Attainable speed for oil-air lubrication		83000	r/min
Ball diameter	D_w	4.762	mm
Number of balls	z	16
Reference grease quantity	G_ref	0.6	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	45	N
Static axial stiffness, preload class A		57	N/µm
Preload class B	G_B	140	N
Static axial stiffness, preload class B		86	N/µm
Preload class C	G_C	270	N
Static axial stiffness, preload class C		111	N/µm
Calculation factors
Calculation factor	f	1.06
Calculation factor	f₁	0.98
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.08
Calculation factor	f_HC	1.01
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

0.036

Model Number: 71905 ACE/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:centrifugal pump,Hydraulic Rama,marine analysis,noise reduction equipment,Machine tools,Generator,training beds etc,instrumentation instrument,Cylinder Standard,cleaners,gas turbine
Similar models:71905 CE/HCP4A 71905 ACD/HCP4A 71905 ACD/P4A 71905 CE/HCP4AL S71905 ACE/HCP4A 71905 ACE/HCP4AH 71905 CD/HCP4A S71905 CE/P4A 71905 ACE/P4AH S71905 CE/HCP4A
BEARING POWER International Trading Co.,Ltd. specialize in 71905ACE/HCP4A products，there is large inventory of SKF 71905 ACE/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 ACE/HCP4A Which SKF 71905ACE/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.

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2050252	520.7	558.8	19.05	Seals
22225	56.9976	67.0052	5.9944	Seals
6211/HC5C3	55	100	21	Bearings, units and housings
65 VA V	58	-	-	Seals
78x100x10 HMS5 V	78	100	10	Seals
BD-C 31/750 KMB-AOH 31/750	710	1220	365	Bearings, units and housings
FSAF 1218	90	-	-	Bearings, units and housings
FSE 515-612	65	-	-	Bearings, units and housings
NKI 42/30	42	57	30	Bearings, units and housings
NUP 209 ECPH	45	85	19	Bearings, units and housings
OKF 470	470	1000	-

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Hot number： 1000530 1400314 34x48x8 HMS5 V 580 VE R 62495 7215 CD/HCP4A 75 VA R AHX 317 FBSA 208 A/QBC GB 4921 NA 4872 NNCL 4872 CV SAF 22313 TLC PFD 35 FM YARAG 207-106