Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71938 CD/HCP4A

71938 CD/HCP4A

Dimensions

d		190	mm
D		260	mm
B		33	mm
d₁		211.6	mm
d₂		211.6	mm
D₁		238.4	mm
r_1,2	min.	2	mm
r_3,4	min.	1	mm
a		46.8	mm

Abutment dimensions

d_a	min.	199	mm
d_b	min.	199	mm
D_a	max.	251	mm
D_b	max.	255	mm
r_a	max.	2	mm
r_b	max.	1	mm
d_n		217.4	mm

Calculation data

Basic dynamic load rating	C	172	kN
Basic static load rating	C₀	220	kN
Fatigue load limit	P_u	6.2	kN
Attainable speed for grease lubrication		6300	r/min
Attainable speed for oil-air lubrication		9000	r/min
Ball diameter	D_w	22.225	mm
Number of balls	z	28
Reference grease quantity	G_ref	57	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	640	N
Static axial stiffness, preload class A		210	N/µm
Preload class B	G_B	1280	N
Static axial stiffness, preload class B		288	N/µm
Preload class C	G_C	2560	N
Static axial stiffness, preload class C		408	N/µm
Preload class D	G_D	5120	N
Static axial stiffness, preload class D		597	N/µm
Calculation factors
Calculation factor	f	1.27
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	16.4

Mass

Mass bearing

3.64

Model Number: 71938 CD/HCP4A
Inner Diameter：190mm Outer Diameter：260mm Width：33mm
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：2024-12-13
Application:turret industry,Industrial,Generator,pump accessories,enzyme,orthodontic material,other rubber,circulating pump,medical Equipment,Workpiece,Industrial
Similar models:71938 ACD/HCP4A 71938 ACD/HCP4AH1 71938 CD/HCP4AH1 71938 CD/P4A 71938 ACD/P4A 71938 CD/HCP4A
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Model No.	Inner Diameter	Outer Diameter	Width	Type
190x225x15 HMS5 RG	190	225	15	Seals
21134	53.975	76.12	11.13	Seals
220 VL V	198	-	-	Seals
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81168 M	340	420	64	Bearings, units and housings
BT4B 332833 G/HA4	660	1070	-	Bearings, units and housings
C 39/850 M	850	1120	200	Bearings, units and housings
HJ 205 EC	25	34.7	6	Bearings, units and housings
NCF 3028 CV	140	210	53	Bearings, units and housings
NJ 2314 ECPH	70	150	51	Bearings, units and housings
OKBS 51	51	-	-
W 61816-2RZ	80	100	10	Bearings, units and housings

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Hot number： 16052 3306 A-2Z 403000 470386 6372 690 VE R 7849 80x105x10 HMS5 V NK 90/25 NU 2222 ECNML NUP 313 ECML SAF 1509 T SAF 23024 KAT x 4 SAFS 22515-11 x 2.1/2 T SI 30 C