Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S71918 CD/HCP4A

S71918 CD/HCP4A

Dimensions

d		90	mm
D		125	mm
B		18	mm
d₁		100.8	mm
d₂		100.8	mm
D₂		117.1	mm
r_1,2	min.	1.1	mm
r_3,4	min.	0.6	mm
a		23.5	mm

Abutment dimensions

d_a	min.	96	mm
d_a	max.	100.2	mm
d_b	min.	96	mm
d_b	max.	100.2	mm
D_a	max.	119	mm
D_b	max.	121	mm
r_a	max.	1	mm
r_b	max.	0.6	mm

Calculation data

Basic dynamic load rating	C	47.5	kN
Basic static load rating	C₀	51	kN
Fatigue load limit	P_u	2.08	kN
Attainable speed for grease lubrication		13000	r/min
Ball diameter	D_w	11.112	mm
Number of balls	z	26
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	180	N
Static axial stiffness, preload class A		104	N/µm
Preload class B	G_B	360	N
Static axial stiffness, preload class B		143	N/µm
Preload class C	G_C	720	N
Static axial stiffness, preload class C		203	N/µm
Preload class D	G_D	1440	N
Static axial stiffness, preload class D		297	N/µm
Calculation factors
Calculation factor	f	1.23
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	16.3

Mass

Mass bearing

0.48

Model Number: S71918 CD/HCP4A
Inner Diameter：90mm Outer Diameter：125mm Width：18mm
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:Medical equipment,hydraulic actuator,X-ray Equipment,metallurgical mold,quality inspection equipment,switch,other CNC,Medical room equipment,municipal machinery,Broadcasting System,tobacco machinery
Similar models:71918 CE/P4A 71918 CD/P4AL 71918 CE/P4AL 71918 ACB/HCP4AL 71918 CB/P4A S71918 CB/HCP4A S71918 ACB/P4A 71918 ACD/HCP4AL 71918 ACD/HCP4AH1 71918 ACD/P4AL
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1000 VA R	910	-	-	Seals
140x160x12 HMS5 V	140	160	12	Seals
2220	100	180	46	Bearings, units and housings
22328 CCJA/W33VA406	140	300	102	Bearings, units and housings
22394	57.15	77.75	11.13	Seals
30056	76.2	107.92	11.13	Seals
7319 BEGAY	95	200	45	Bearings, units and housings
GS 81140	200	250	11	Bearings, units and housings
IR 25X30X16 IS1	25	30	16	Bearings, units and housings
N 038	28.829	-	189.7888	Bearings, units and housings
NA 4926	130	180	50	Bearings, units and housings
SAF 1518 x 3.1/4 TLC	82.55	-	-	Bearings, units and housings

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Hot number： 14282 30220 330x370x20 HDS1 R 52230 M 6300-Z 7308 BECAP 89418 M AOH 30/1060 GS 81103 HCRE 110 R NNCL 4838 CV NU 224 ECML RNA 6907 PRM 707580 SNW 144x7.13/16