Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF 71903 CD/P4A

71903 CD/P4A

Dimensions

d		17	mm
D		30	mm
B		7	mm
d₁		20.9	mm
d₂		20.9	mm
D₁		25.7	mm
r_1,2	min.	0.3	mm
r_3,4	min.	0.2	mm
a		6.7	mm

Abutment dimensions

d_a	min.	19	mm
d_b	min.	19	mm
D_a	max.	28	mm
D_b	max.	28.6	mm
r_a	max.	0.3	mm
r_b	max.	0.2	mm
d_n		22.1	mm

Calculation data

Basic dynamic load rating	C	4.16	kN
Basic static load rating	C₀	2.08	kN
Fatigue load limit	P_u	0.088	kN
Attainable speed for grease lubrication		50000	r/min
Attainable speed for oil-air lubrication		75000	r/min
Ball diameter	D_w	3.969	mm
Number of balls	z	14
Reference grease quantity	G_ref	0.24	cm³
Preload and stiffness (back-to-back, face-to-face)
Preload class A	G_A	15	N
Static axial stiffness, preload class A		16	N/µm
Preload class B	G_B	30	N
Static axial stiffness, preload class B		22	N/µm
Preload class C	G_C	60	N
Static axial stiffness, preload class C		30	N/µm
Preload class D	G_D	120	N
Static axial stiffness, preload class D		43	N/µm
Calculation factors
Calculation factor	f	1.05
Calculation factor	f₁	1
Calculation factor	f_2A	1
Calculation factor	f_2B	1.04
Calculation factor	f_2C	1.09
Calculation factor	f_2D	1.15
Calculation factor	f_HC	1
Calculation factor	f₀	9.8

Mass

Mass bearing

0.017

Model Number: 71903 CD/P4A
Inner Diameter：17mm Outer Diameter：30mm Width：7mm
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：2024-12-23
Application:plastic blow molding,stirrer,Hair styling device,small diesel generators,screen filter,gantry processing,Hydraulic Press,Doppler,Energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving,other lathe,test equipment
Similar models:71903 CE/HCP4A 71903 CE/P4A S71903 CD/P4A 71903 CD/P4A 71903 CE/HCP4AH 71903 ACD/HCP4A S71903 ACD/HCP4A S71903 CD/HCP4A 71903 ACE/P4A 71903 ACD/P4A
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Model No.	Inner Diameter	Outer Diameter	Width	Type
115x140x12 CRW1 R1	115	140	12	Seals
13548	34.925	47.6	6.35	Seals
13878	34.925	65.07	9.53	Seals
BD-24048 CCK30/W33-AOH 24048	220	360	118	Bearings, units and housings
61948	240	320	38	Bearings, units and housings
71922 ACD/HCP4AL	110	150	20	Bearings, units and housings
90139	-	-	25.4	Seals
H 2305	20	38	35	Bearings, units and housings
K 8x12x10 TN	8	12	10	Bearings, units and housings
PBMF 091408 M1	9	14	8	Bearings, units and housings
SAF 22624 x 4.1/16	103.1875	-	-	Bearings, units and housings
SAFS 22228 T	140	-	-	Bearings, units and housings

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Hot number： 122555 16003/HR22T2 24022 CC/W33 340x380x20 HS8 R 41751 6217-Z 7203 ACD/HCP4A FSAF 22611 x 1.7/8 K 5x8x10 TN NCF 29/850 V NJ 214 ECP NU 1013 ECP PCM 060810 E SAF 1615 SILJ 12 E