Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71904 CE/HCP4A

71904 CE/HCP4A

Dimensions

d		20	mm
D		37	mm
B		9	mm
d₁		25.65	mm
d₂		24.4	mm
D₁		31.49	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.15	mm
a		8.5	mm

Abutment dimensions

d_a	min.	22	mm
d_b	min.	22	mm
D_a	max.	35	mm
D_b	max.	36.2	mm
r_a	max.	0.3	mm
r_b	max.	0.15	mm
d_n		26.7	mm

Calculation data

Basic dynamic load rating	C	4.88	kN
Basic static load rating	C₀	2.4	kN
Fatigue load limit	P_u	0.102	kN
Attainable speed for grease lubrication		68000	r/min
Attainable speed for oil-air lubrication		106000	r/min
Ball diameter	D_w	4.762	mm
Number of balls	z	14
Reference grease quantity	G_ref	0.5	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	26	N
Static axial stiffness, preload class A		20	N/µm
Preload class B	G_B	79	N
Static axial stiffness, preload class B		31	N/µm
Preload class C	G_C	157	N
Static axial stiffness, preload class C		43	N/µm
Calculation factors
Calculation factor	f	1.04
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.05
Calculation factor	f_2C	1.09
Calculation factor	f_HC	1.01
Calculation factor	f₀	7.8

Mass

Mass bearing

0.032

Model Number: 71904 CE/HCP4A
Inner Diameter：20mm Outer Diameter：37mm 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:lifting equipment Hoisting hoist,Rolling mill gear box,instrumentation instrument,engineering machine,Laser Devices,Pneumatic Actuator,textile machinery,lifting chain,plastic molding,test equipment,machine lathe
Similar models:71904 CE/HCP4AH S71904 ACE/HCP4A S71904 ACD/P4A S71904 ACE/P4A 71904 CE/P4AH 71904 CE/P4AL 71904 ACE/P4AL 71904 CD/HCP4A 71904 ACD/HCP4A S71904 CD/HCP4A
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Model No.	Inner Diameter	Outer Diameter	Width	Type
260x290x16 HDS2 V	260	290	16	Seals
20749	52.4002	82.58	11.13	Seals
71903 CE/HCP4AH	17	30	7	Bearings, units and housings
91312	-	-	63.5	Seals
BT2B 332493/HA4	635	990.6	-	Bearings, units and housings
BT4B 334126 G/HA1VA901	300	440	-	Bearings, units and housings
FSAF 1615 x 2.1/2 TLC	63.5	-	-	Bearings, units and housings
NA 6905	25	42	30	Bearings, units and housings
NU 348 ML	240	500	95	Bearings, units and housings
SAF 22220 T	100	-	-	Bearings, units and housings
SAF 22324 TLC	120	-	-	Bearings, units and housings
SNW 116x2.5/8	66.675	105.6894	81.1276	Bearings, units and housings

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Hot number： 11673 110x140x12 HMSA10 V BD-22313 EK-AH 2313 G BD-24192 ECAK30/W33-AOH 24192 31308/DF AOH 3060 C 39/1060 MB C 4024 K30V/VE240 NCF 3006 CV NJ 318 ECP NU 313 ECPH SAF 22544 x 7.7/8 TLC SAF 23032 KATLC x 5.1/2 SIL 35 ESX-2LS XHCE 040/OK 110