51209-Thrust ball bearing-FGFA bearings

51209 Single direction thrust ball bearing

Thrust ball bearings are primarily designed to withstand axial loads, engineered to handle thrust forces during high-speed operation. They are incapable of bearing radial loads and have a relatively low maximum rotational speed. Offering straightforward installation and maintenance, they find extensive application in machinery such as machine tools, electric motors, cranes, and automotive gearboxes.

Dimensions

d	45mm	Bore diameter
D	73mm	Outside diameter
H	20mm	Height
d₁	≈ 73mm	Outside diameter shaft washer
D₁	≈ 47mm	Inner diameter housing washer
r_1,2	min. 1mm	Chamfer dimension washer

Abutment dimensions

d_a	min. 62mm	Abutment diameter shaft
D_a	max. 56mm	Abutment diameter housing
r_a	max. 1mm	Fillet radius

Calculation data

Basic dynamic load rating	C	39kN
Basic static load rating	C₀	86.5kN
Fatigue load limit	P_u	3.2kN
Reference speed		3 600r/min
Limiting speed		5 000r/min
Minimum load factor	A	0.038

Basic Parameters

Bearing Inner Diameter：45 mm
Bearing Outer Diameter：73 mm
Bearing Thickness：20 mm

Wafangdian Fafuge Bearing Co., Ltd., rooted in Wafangdian Bearing Industry Base, is an emerging professional bearing manufacturer. Drawing on the base’s profound industrial heritage, we have upheld craftsmanship since inception, integrated precision manufacturing into R&D and production, and focused on the R&D and refined production of spherical roller bearings.