Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71808 CD/HCP4

71808 CD/HCP4

Dimensions

d		40	mm
D		52	mm
B		7	mm
d₁		44.1	mm
d₂		44.1	mm
D₁		48.1	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.15	mm
a		9.7	mm

Abutment dimensions

d_a	min.	42	mm
d_b	min.	42	mm
D_a	max.	50	mm
D_b	max.	51.2	mm
r_a	max.	0.3	mm
r_b	max.	0.15	mm
d_n		44.5	mm

Calculation data

Basic dynamic load rating	C	4.88	kN
Basic static load rating	C₀	4.9	kN
Fatigue load limit	P_u	0.208	kN
Attainable speed for grease lubrication		30000	r/min
Attainable speed for oil-air lubrication		45000	r/min
Ball diameter	D_w	3.175	mm
Number of balls	z	29
Reference grease quantity	G_ref	0.31	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	26	N
Static axial stiffness, preload class A		40	N/µm
Preload class B	G_B	78	N
Static axial stiffness, preload class B		68	N/µm
Preload class C	G_C	155	N
Static axial stiffness, preload class C		100	N/µm
Calculation factors
Calculation factor	f	1.23
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.1
Calculation factor	f_2C	1.18
Calculation factor	f_HC	1.02
Calculation factor	f₀	17.2

Mass

Mass bearing

0.029

Model Number: 71808 CD/HCP4
Inner Diameter：40mm Outer Diameter：52mm Width：7mm
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：2026-04-17
Application:plastic molding,Special Equipment,beverage production,non-ferrous metal alloy,transistor fittings,Machine tool accessories,injection molding machine,rolling mill roll neck and slowdown device,medical equipment,thin metal materials,equipment and
Similar models:71808 ACD/P4 71808 ACD/HCP4 71808 CD/P4 71808 CD/HCP4
BEARING POWER International Trading Co.,Ltd. specialize in 71808CD/HCP4 products，there is large inventory of SKF 71808 CD/HCP4 Angular contact ball bearings, super-precision. We has been built up long-term cooperation with SKF company, could make a bulk order of the 71808 CD/HCP4 Which SKF 71808CD/HCP4 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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Hot number： 1700541 30x62x7 CRW1 R 7224 ACD/HCP4A FY 2. TF FY 55 TF/VA201 FYAWK 40 LTA HA 2324 NJ 29/710 ECMA RLS 6-2Z SALKAC 12 M SALKAC 20 M SE 210 SHT 95 W 609-2RZ W 6202-2RS1/VP311