SKF 7304 BECBP Single row angular contact ball bearing

These single row angular contact ball bearings can accommodate radial and axial loads acting simultaneously, where the axial load acts in one direction only. They can operate at high speeds and, depending on the variant, even very high speeds. They are more suitable than deep groove ball bearings for supporting large axial forces acting in one direction.

SKF BEARING

Description

SKF 7304 BECBP bearing specification parameter:

d	20 mm	Bore diameter
D	52 mm	Outside diameter
B	15 mm	Width
d₁	≈32.9 mm	Shoulder diameter of inner ring (large side face)
d₂	≈26.75 mm	Shoulder diameter of inner ring (small side face)
D₁	≈40.5 mm	Shoulder diameter of outer ring (large side face)
a	22.8 mm	Distance side face to pressure point
r_1,2	min.1.1 mm	Chamfer dimension
r_3,4	min.0.6 mm	Chamfer dimension

Abutment dimensions

d_a	min.27 mm	Diameter of shaft abutment
D_a	max.45 mm	Abutment diameter housing
D_b	max.47.8 mm	Diameter of housing abutment
r_a	max.1 mm	Radius of fillet
r_b	max.0.6 mm	Radius of fillet

Calculation data

Basic dynamic load rating	C	19 kN
Basic static load rating	C₀	10 kN
Fatigue load limit	P_u	0.425 kN
Reference speed		17 000 r/min
Limiting speed		18 000 r/min
Minimum axial load factor	A	0.00191
Minimum radial load factor	k_r	0.1
Limiting value	e	1.14

SINGLE BEARING OR BEARING PAIR ARRANGED IN TANDEM
Radial load factor (single, tandem)	X	0.35
Axial load factor (single, tandem)	Y₀	0.26
Axial load factor (single, tandem)	Y₂	0.57

BEARING PAIR ARRANGED BACK-TO-BACK OR FACE-TO-FACE
Radial load factor (back-to-back, face-to-face)	X	0.57
Axial load factor (back-to-back, face-to-face)	Y₀	0.52
Axial load factor (back-to-back, face-to-face)	Y₁	0.55
Axial load factor (back-to-back, face-to-face)	Y₂	0.93