30206T40/DBC90- Tapered roller bearing-FGFA bearings

30206T40/DBC90 Matched tapered roller bearings arranged back-to-back

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.

Dimensions

d	30 mm	Bore diameter
D	62 mm	Outside diameter
T	40 mm	Total width
d₁	≈45.3 mm	Shoulder diameter of inner ring
C	33.5 mm	Width of outer rings
l	5.5 mm	Width of spacer ring
t	1.625 mm	Width of lubrication groove
r_1,2	min.1 mm	Chamfer dimension
r₅	min.0.3 mm	Chamfer dimension
a	32.785 mm	Distance between pressure points

Abutment dimensions

d_b	min.37 mm	Diameter of shaft abutment
D_b	min.57 mm	Diameter of housing abutment
C_b	min.3 mm	Minimum width of space required in housing on small side face
r_a	max.1 mm	Radius of fillet
r_c	max.0.3 mm	Radius of fillet

Calculation data

FGFA performance class		FGFA Explorer
Basic dynamic load rating	C	85.7 kN
Basic static load rating	C₀	88 kN
Fatigue load limit	P_u	9.65 kN
Reference speed		7 500 r/min
Limiting speed		11 000 r/min
Limiting value	e	0.37
Calculation factor	Y₁	1.8
Calculation factor	Y₂	2.7
Calculation factor	Y₀	1.8

Tolerances: Normal + CL7C, P5, total width
Internal clearance: values

Basic Parameters

Bearing Inner Diameter：30 mm
Bearing Outer Diameter：62 mm
Bearing Thickness：40 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.