30244T170/DB11C170- Tapered roller bearing-FGFA bearings

30244T170/DB11C170 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	220 mm	Bore diameter
D	400 mm	Outside diameter
T	170 mm	Total width
d₁	≈295.99 mm	Shoulder diameter of inner ring
C	134 mm	Width of outer rings
l	26 mm	Width of spacer ring
r_1,2	min.5 mm	Chamfer dimension
r₅	min.1.5 mm	Chamfer dimension
a	173.118 mm	Distance between pressure points

Abutment dimensions

d_b	min.240.5 mm	Diameter of shaft abutment
D_b	min.371 mm	Diameter of housing abutment
C_b	min.18 mm	Minimum width of space required in housing on small side face
r_a	max.5 mm	Radius of fillet
r_c	max.1.5 mm	Radius of fillet

Calculation data

Basic dynamic load rating	C	1 816 kN
Basic static load rating	C₀	2 800 kN
Fatigue load limit	P_u	255 kN
Reference speed		950 r/min
Limiting speed		1 600 r/min
Limiting value	e	0.43
Calculation factor	Y₁	1.6
Calculation factor	Y₂	2.3
Calculation factor	Y₀	1.6

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

Basic Parameters

Bearing Inner Diameter：220 mm
Bearing Outer Diameter：400 mm
Bearing Thickness：170 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.