BT4-8125 EA1/C725- Tapered roller bearing-FGFA bearings

BT4-8125 EA1/C725 Four-row tapered roller bearing

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	TQOSN/GWSI
Bore type	Cylindrical with helical groove

Dimensions

d	457.2 mm	Bore diameter
D	606 mm	Outside diameter
B	381 mm	Total bearing width over inner rings
T	381 mm	Total bearing width over outer rings
d₁	≈490 mm	Abutment diameter shaft
D₁	≈560 mm	Abutment diameter housing
r_1,2	min.1 mm	Chamfer dimension inner ring
r_3,4	min.6.4 mm	Outer ring radius (chamfer)

Calculation data

FGFA performance class		FGFA Explorer
Basic dynamic load rating	C	7 500 kN
Basic static load rating	C₀	16 300 kN
Fatigue load limit	P_u	1 250 kN
Comparative radial load rating	C_F	1 830 kN
Comparative axial load rating	C_Fa	295 kN
Thrust factor	K	1.76
Limiting value	e	0.33
Calculation factor	Y₁	2
Calculation factor	Y₂	3
Calculation factor	Y₀	2

Tolerances: bearings (Normal and CL7C), inch bearings
Internal clearance

Basic Parameters

Bearing Inner Diameter：457.2 mm
Bearing Outer Diameter：606 mm
Bearing Thickness：381 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.