Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71911 CB/P4AL

71911 CB/P4AL

Dimensions

d		55	mm
D		80	mm
B		13	mm
d₁		63.94	mm
d₂		62.7	mm
D₂		73.2	mm
b		2	mm
C₁		6.5	mm
C₂		3.8	mm
C₃		1.7	mm
r_1,2	min.	1	mm
r_3,4	min.	0.3	mm
a		18.8	mm

Abutment dimensions

d_a	min.	59.6	mm
d_b	min.	59.6	mm
D_a	max.	75.4	mm
D_b	max.	78	mm
r_a	max.	1	mm
r_b	max.	0.3	mm
d_n		64.8	mm

Calculation data

Basic dynamic load rating	C	13.5	kN
Basic static load rating	C₀	13.7	kN
Fatigue load limit	P_u	0.345	kN
Attainable speed for grease lubrication		22000	r/min
Attainable speed for oil-air lubrication		34000	r/min
Ball diameter	D_w	5.556	mm
Number of balls	z	28
Reference grease quantity	G_ref	2.58	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	33	N
Static axial stiffness, preload class A		34	N/µm
Preload class B	G_B	66	N
Static axial stiffness, preload class B		45	N/µm
Preload class C	G_C	200	N
Static axial stiffness, preload class C		73	N/µm
Calculation factors
Calculation factor	f	1.09
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.02
Calculation factor	f_2C	1.07
Calculation factor	f_HC	1
Calculation factor	f₀	9.8

Mass

Mass bearing

0.18

Model Number: 71911 CB/P4AL
Inner Diameter：55mm Outer Diameter：80mm Width：13mm
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:glass,Industrial Electromechanical,physical instruments,medical equipment,medical equipment,embroidery cloth,insect experimental analysis instrument,Textile Industry Accessories and Accessories,aerial work platform,Water Monitoring,mobile toilet
Similar models:71911 ACD/P4AL 71911 CE/P4A 71911 ACE/P4A 71911 ACE/HCP4A 71911 ACB/HCP4A S71911 CE/P4A 71911 CE/HCP4AH1 71911 CB/P4AL S71911 ACE/HCP4A 71911 CD/P4A
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37532	95.25	126.97	11.13	Seals
6309-RSH	45	100	25	Bearings, units and housings
99828	44.45	52.4002	22.225	Seals
BTW 60 CTN9/SP	60	95	44	Bearings, units and housings
BNTB 326247/HB1	160	250	140	Bearings, units and housings
D/W RW1-4 R	1.984	6.35	3.175	Bearings, units and housings
IR 22x28x20.5	22	28	20.5	Bearings, units and housings
SAF 22536 x 6.1/2 T	165.1	-	-	Bearings, units and housings
SC 70 ES	70	-	49	Bearings, units and housings
SHR 24	24	-	-	Coupling systems
SNW 7x1.1/8	28.575	52.5272	36.8046	Bearings, units and housings
YAR 212-203-2F	55.562	110	65.1	Bearings, units and housings

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Hot number： 13534 6218 60x80x8 HMS5 V 7002 CD/HCP4AH 7030 ACD/P4AL 84697 IR 85x100x63 NKX 17 Z OKBS 90 SAW 23524 x 4.1/16 TLC SNW 32x5.7/16 SY 2.15/16 TF/VA228 SYNT 65 FTF W 619/7 R-2Z YAR 204-012-2RF/VE495