331945- Tapered roller bearing-FGFA bearings

331945 Double row tapered roller bearing, TDO design

Tapered roller bearings are of the separable type, comprising an inner ring, outer ring, tapered rollers, and a cage. Through the matching of tapered raceways and rollers, they can simultaneously withstand substantial radial loads and unidirectional axial loads. Characterised by high load-carrying capacity and rigidity, they find extensive application in automotive hubs, machine tool spindles, construction machinery, mining equipment, and similar scenarios.

Design variant/feature

TDO/D

Dimensions

d	228.6 mm	Bore diameter
D	488.95 mm	Outside diameter
T	254 mm	Total width
C	152.4 mm	Width of outer ring
d₁	359.5 mm	Shoulder diameter of inner ring (large side face)
D₁	455.283 mm	Raceway diameter of outer ring (large side face)
r_1,2	min.6.4 mm	Chamfer dimension of inner ring
a	326.405 mm	Distance between pressure points

Calculation data

Basic dynamic load rating	C	3 143 kN
Basic static load rating	C₀	4 500 kN
Fatigue load limit	P_u	390 kN
Limiting value	e	0.94
Calculation factor	Y₁	0.72
Calculation factor	Y₂	1.07
Calculation factor	Y₀	0.7
Comparative radial load rating	C_F	735 kN
Comparative axial load rating	C_Fa	669 kN
Thrust factor	K	0.62

Tolerances:
bearings: Normal and CL7C, P5
inch bearings: Normal and CL
Internal clearance

Basic Parameters

Bearing Inner Diameter：228.6 mm
Bearing Outer Diameter：488.95 mm
Bearing Thickness：203.2 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.