51111-Thrust ball bearing-FGFA bearings

51111 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	55mm	Bore diameter
D	78mm	Outside diameter
H	16mm	Height
d₁	≈ 78mm	Outside diameter shaft washer
D₁	≈ 57mm	Inner diameter housing washer
r_1,2	min. 0.6mm	Chamfer dimension washer

Abutment dimensions

d_a	min. 69mm	Abutment diameter shaft
D_a	max. 64mm	Abutment diameter housing
r_a	max. 0.6mm	Fillet radius

Calculation data

Basic dynamic load rating	C	30.2kN
Basic static load rating	C₀	81.5kN
Fatigue load limit	P_u	3kN
Reference speed		3 800r/min
Limiting speed		5 300r/min
Minimum load factor	A	0.039

Basic Parameters

Bearing Inner Diameter：55 mm
Bearing Outer Diameter：78 mm
Bearing Thickness：16 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.