51256 M-Thrust ball bearing-FGFA bearings

51256 M 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	280mm	Bore diameter
D	380mm	Outside diameter
H	80mm	Height
d₁	≈ 375mm	Outside diameter shaft washer
D₁	≈ 284mm	Inner diameter housing washer
r_1,2	min. 2.1mm	Chamfer dimension washer

Abutment dimensions

d_a	min. 339mm	Abutment diameter shaft
D_a	max. 321mm	Abutment diameter housing
r_a	max. 2mm	Fillet radius

Calculation data

Basic dynamic load rating	C	488kN
Basic static load rating	C₀	2 320kN
Fatigue load limit	P_u	47.5kN
Reference speed		750r/min
Limiting speed		1 000r/min
Minimum load factor	A	28

Basic Parameters

Bearing Inner Diameter：280 mm
Bearing Outer Diameter：380 mm
Bearing Thickness：80 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.