3578/3520 Timken Tapered Roller Bearing 44.450x84.138x30.163mm

Timken offers the most extensive line of tapered roller bearings in the world. Tapered roller bearings consist of four interdependent components: the cone (inner ring), the cup (outer ring), the tapered rollers (rolling elements) and the cage (roller retainer). Tapered roller bearings are uniquely designed to manage both thrust and radial loads between a rotating and non-rotating member. The steeper the cup angle, the greater the ability of the bearing to handle thrust loads.

Industries:
Aerospace, agriculture, automotive, heavy truck, cement, aggregate, coal, oil and gas, construction, gear drives, machine tools, mining, paper, metals, rail and wind.

Benefits:
Enhanced performance in demanding applications.

Specifications
Series 3500
Cone Part Number 3578
Cup Part Number 3520
Design Unit Inch
Bearing Weight 1.5 lb 0.70 Kg
Cage Material Stamped Steel

Dimensions
d - Bore 1 3/4 in 44.450 mm
D - Cup Outer Diameter 3.3125 in 84.138 mm
B - Cone Width 1.2160 in 30.886 mm
C - Cup Width 0.9375 in 23.813 mm
T - Bearing Width 1.1875 in 30.163 mm

Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1 0.14 in 3.6 mm
r - Cup Backface "To Clear" Radius2 0.130 in 3.3 mm
da - Cone Frontface Backing Diameter 2.01 in 51 mm
db - Cone Backface Backing Diameter 2.24 in 57 mm
Da - Cup Frontface Backing Diameter 3.15 in 80.00 mm
Db - Cup Backface Backing Diameter 2.91 in 73.91 mm
Ab - Cage-Cone Frontface Clearance 0.05 in 1.3 mm
Aa - Cage-Cone Backface Clearance 0.07 in 1.8 mm
a - Effective Center Location3 -0.4 in -10.2 mm

Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)4 6610 lbf 29400 N
C1 - Dynamic Radial Rating (1 million revolutions)5 25500 lbf 113000 N
C0 - Static Radial Rating 30100 lbf 134000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 3460 lbf 15400 N