Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 708 CD/HCP4A

708 CD/HCP4A

Dimensions

d		8	mm
D		22	mm
B		7	mm
d₁		12.6	mm
d₂		12.6	mm
D₁		17.4	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.2	mm
a		5.5	mm

Abutment dimensions

d_a	min.	10	mm
d_b	min.	10	mm
D_a	max.	20	mm
D_b	max.	20.6	mm
r_a	max.	0.3	mm
r_b	max.	0.2	mm
d_n		13.6	mm

Calculation data

Basic dynamic load rating	C	3.25	kN
Basic static load rating	C₀	1.37	kN
Fatigue load limit	P_u	0.057	kN
Attainable speed for grease lubrication		110000	r/min
Attainable speed for oil-air lubrication		160000	r/min
Ball diameter	D_w	3.969	mm
Number of balls	z	9
Reference grease quantity	G_ref	0.15	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	10	N
Static axial stiffness, preload class A		12	N/µm
Preload class B	G_B	20	N
Static axial stiffness, preload class B		16	N/µm
Preload class C	G_C	40	N
Static axial stiffness, preload class C		21	N/µm
Preload class D	G_D	80	N
Static axial stiffness, preload class D		30	N/µm
Calculation factors
Calculation factor	f	1.02
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.02
Calculation factor	f_2C	1.05
Calculation factor	f_2D	1.09
Calculation factor	f_HC	1.02
Calculation factor	f₀	8.4

Mass

Mass bearing

0.011

Model Number: 708 CD/HCP4A
Inner Diameter：8mm Outer Diameter：22mm 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：2021-06-03
Application:car and accessories,animal,test equipment,electrostatic protection,luminescent reagent,pump industry,motor,noise reduction equipment,internal combustion engine,Spectrum Products,labor insurance
Similar models:WBB1-8708-2Z PCM 050708 E 708 ACE/P4AH WBB1-8708-2RS1 70892 AM PBM 708590 M1G1 PSMF 708560 A51 PBM 7085120 M1G1 WBB1-8708 R-2Z BT1B 617089 B
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RMS 22	69.85	158.75	34.925	Bearings, units and housings
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SAFS 22520 x 3.1/2	88.9	-	-	Bearings, units and housings
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