HM 259048/010/HA4- Tapered roller bearing-FGFA bearings

HM 259048/010/HA4 Single 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.

Dimension series

HM 259000

Dimensions

d	317.5 mm	Bore diameter
D	447.675 mm	Outside diameter
T	85.725 mm	Total width
d₁	≈376.1 mm	Shoulder diameter of inner ring
B	85.725 mm	Width of inner ring
C	68.262 mm	Width of outer ring
r_1,2	min.3.5 mm	Chamfer dimension of inner ring
r_3,4	min.3.3 mm	Chamfer dimension of outer ring
a	80 mm	Distance side face to pressure point

Abutment dimensions

d_a	max.341 mm	Diameter of shaft abutment
d_b	min.339 mm	Diameter of shaft abutment
D_a	min.405 mm	Diameter of housing abutment
D_a	max.428 mm	Diameter of housing abutment
D_b	min.428 mm	Diameter of housing abutment
C_a	min.9 mm	Minimum width of space required in housing on large side face
C_b	min.17 mm	Minimum width of space required in housing on small side face
r_a	max.3.5 mm	Radius of shaft fillet
r_b	max.3.3 mm	Radius of housing fillet

Calculation data

Basic dynamic load rating	C	1 363 kN
Basic static load rating	C₀	2 700 kN
Fatigue load limit	P_u	220 kN
Reference speed		900 r/min
Limiting speed		1 200 r/min
Limiting value	e	0.33
Calculation factor	Y	1.8
Calculation factor	Y₀	1

Basic Parameters

Bearing Inner Diameter：317.5 mm
Bearing Outer Diameter：447.675 mm
Bearing Thickness：85.725 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.