30208 R- Tapered roller bearing-FGFA bearings

30208 R Single row tapered roller bearing with flanged outer ring

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.

Dimension series

3DB

Dimensions

d	40 mm	Bore diameter
D	80 mm	Outside diameter
T	19.75 mm	Total width
d₁	≈57.55 mm	Shoulder diameter of inner ring
D₁	85 mm	Diameter of flange
B	18 mm	Width of inner ring
C	16 mm	Width of outer ring
C₁	4 mm	Width of flange
r_1,2	min.1.5 mm	Chamfer dimension of inner ring
r_3,4	min.1.5 mm	Chamfer dimension of outer ring
a	16.094 mm	Distance side face to pressure point

Abutment dimensions

d_a	max.49 mm	Diameter of shaft abutment
d_b	min.48.5 mm	Diameter of shaft abutment
r_a	max.1.5 mm	Radius of shaft fillet

Calculation data

FGFA performance class		FGFA Explorer
Basic dynamic load rating	C	75.8 kN
Basic static load rating	C₀	68 kN
Fatigue load limit	P_u	7.65 kN
Reference speed		7 000 r/min
Limiting speed		8 500 r/min
Limiting value	e	0.37
Calculation factor	Y	1.6
Calculation factor	Y₀	0.9

Basic Parameters

Bearing Inner Diameter：40 mm
Bearing Outer Diameter：80 mm
Bearing Thickness：19.75 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.