Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71908 CB/HCP4AL

71908 CB/HCP4AL

Dimensions

d		40	mm
D		62	mm
B		12	mm
d₁		48.46	mm
d₂		47.6	mm
D₂		55.64	mm
b		2	mm
C₁		5.9	mm
C₂		2.8	mm
C₃		1.7	mm
r_1,2	min.	0.6	mm
r_3,4	min.	0.3	mm
a		14.8	mm

Abutment dimensions

d_a	min.	43.2	mm
d_b	min.	43.2	mm
D_a	max.	58.8	mm
D_b	max.	60	mm
r_a	max.	0.6	mm
r_b	max.	0.3	mm
d_n		49.1	mm

Calculation data

Basic dynamic load rating	C	7.15	kN
Basic static load rating	C₀	6.95	kN
Fatigue load limit	P_u	0.176	kN
Attainable speed for grease lubrication		36000	r/min
Attainable speed for oil-air lubrication		56000	r/min
Ball diameter	D_w	3.969	mm
Number of balls	z	28
Reference grease quantity	G_ref	1.38	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	18	N
Static axial stiffness, preload class A		27	N/µm
Preload class B	G_B	36	N
Static axial stiffness, preload class B		36	N/µm
Preload class C	G_C	110	N
Static axial stiffness, preload class C		58	N/µm
Calculation factors
Calculation factor	f	1.06
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.03
Calculation factor	f_2C	1.08
Calculation factor	f_HC	1.01
Calculation factor	f₀	9.8

Mass

Mass bearing

0.11

Model Number: 71908 CB/HCP4AL
Inner Diameter：40mm Outer Diameter：62mm Width：12mm
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：2024-12-15
Application:Equipment,industrial fans,surgical instruments,garden machinery,Forging machine,Display Devices,orthodontic material,stamping die and its equipment,Security Equipment,Warehouse Shelf Equipment,chemical raw materials and reagents
Similar models:71908 CE/P4AL S71908 CE/P4A 71908 CB/HCP4A S71908 CB/HCP4A S71908 ACB/P4A 71908 CE/P4AH1 71908 ACB/HCP4AL S71908 ACE/P4A 71908 ACE/P4AH1 71908 CE/P4A
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10124	25.4	50.8	6.35	Seals
12383	31.75	47.6	6.35	Seals
2050557	520.7	571.5	20.62	Seals
23746	60.325	85.62	11.13	Seals
43345	110.0074	142.9	12	Seals
6211-2Z/VA228	55	100	21	Bearings, units and housings
7024 CD/P4A	120	180	28	Bearings, units and housings
7056 BGM	280	420	65	Bearings, units and housings
AH 24132	150	160	124	Bearings, units and housings
C 4032	160	240	80	Bearings, units and housings
FYJ 40 KF	35	-	-	Bearings, units and housings
SAF 1618 x 3.1/16	77.7875	-	-	Bearings, units and housings

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Hot number： 2217 K + H 317 23184-2CS5K/VT143 232/800 CAF/W33 61248 635-2RZ 87090 FSAF 22518 x 3.1/16 FY 1.3/8 LDW FYR 2 15/16 OKF 250 YARAG 207 SYFWK 507 L SYJ 30 KF SYNT 80 L W 6203-2Z