Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71909 CD/HCP4A

71909 CD/HCP4A

Dimensions

d		45	mm
D		68	mm
B		12	mm
d₁		52.6	mm
d₂		52.6	mm
D₁		60.4	mm
r_1,2	min.	0.6	mm
r_3,4	min.	0.3	mm
a		13.6	mm

Abutment dimensions

d_a	min.	48.2	mm
d_b	min.	48.2	mm
D_a	max.	64.8	mm
D_b	max.	66.6	mm
r_a	max.	0.6	mm
r_b	max.	0.3	mm
d_n		54.2	mm

Calculation data

Basic dynamic load rating	C	13	kN
Basic static load rating	C₀	9.5	kN
Fatigue load limit	P_u	0.4	kN
Attainable speed for grease lubrication		24000	r/min
Attainable speed for oil-air lubrication		36000	r/min
Ball diameter	D_w	6.35	mm
Number of balls	z	23
Reference grease quantity	G_ref	1.62	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	50	N
Static axial stiffness, preload class A		44	N/µm
Preload class B	G_B	100	N
Static axial stiffness, preload class B		59	N/µm
Preload class C	G_C	200	N
Static axial stiffness, preload class C		81	N/µm
Preload class D	G_D	400	N
Static axial stiffness, preload class D		115	N/µm
Calculation factors
Calculation factor	f	1.11
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.07
Calculation factor	f_2C	1.12
Calculation factor	f_2D	1.18
Calculation factor	f_HC	1.04
Calculation factor	f₀	10.5

Mass

Mass bearing

0.12

Model Number: 71909 CD/HCP4A
Inner Diameter：45mm Outer Diameter：68mm 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：2025-12-09
Application:paint paint,Cutting Machine,Dental Equipment,Industrial,medical equipment,relay,switch,Vertical pull,woodworking machinery,vacuum suction cup,ventilation fans
Similar models:71909 ACE/P4A S71909 CD/HCP4A S71909 CB/P4A 71909 ACE/P4AH1 71909 ACB/P4AL 71909 CE/P4A 71909 CE/P4AH1 S71909 ACD/P4A 71909 ACE/P4AL 71909 ACE/HCP4AL
BEARING POWER International Trading Co.,Ltd. specialize in 71909CD/HCP4A products，there is large inventory of SKF 71909 CD/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 71909 CD/HCP4A Which SKF 71909CD/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.

Model No.	Inner Diameter	Outer Diameter	Width	Type
12533	31.75	52.375	10.998	Seals
21136	53.975	76.12	11.13	Seals
22317 E	85	180	60	Bearings, units and housings
31307	35	80	22.75	Bearings, units and housings
7409 BGBM	45	120	29	Bearings, units and housings
8677	22.225	34.93	4.78	Seals
87789	-	-	28	Seals
FYJ 55 TF	55	-	-	Bearings, units and housings
HA 307	30.1625	35	35	Bearings, units and housings
NJ 314 ECP	70	150	35	Bearings, units and housings
SAFS 22234	170	-	-	Bearings, units and housings
SY 20 TDW	20	-	-	Bearings, units and housings

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