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Timken Part Number 55206 – 55444D, Tapered Roller Bearings – TDO (Tapered Double Outer) Imperial

Home TIMKEN BEARING Timken Part Number 55206 – 55444D, Tapered Roller Bearings – TDO (Tapered Double Outer) Imperial

Timken Part Number 55206 – 55444D, Tapered Roller Bearings – TDO (Tapered Double Outer) Imperial

The configuration of the TDO provides a wide effective bearing spread, making it ideal for applications in which overturning moments are a significant load component. TDO bearings can be used in fixed positions or allowed to float in the housing bore.

TIMKEN BEARING

Description

Timken 55206 – 55444D Specifications:

Series

 55000

Cone Part Number

 55206

Cup Part Number

 55444D

Design Units

 Imperial

Bearing Weight

 5.85 lb2.655 Kg

Cage Type

 Stamped Steel

Ab – Cage-Cone Frontface Clearance

 0.16 in4.1 mm

Alternate Part Name

 55206-55444D

Dimensions

d – Bore

 2.0625 in52.388 mm

D – Cup Outer Diameter

 4.4375 in112.713 mm

B – Cone Width

 1.0594 in26.909 mm

C – Double Cup Width

 1.8125 in46.038 mm

T – Bearing Width across Cones

 2.5624 in65.085 mm

Abutment and Fillet Dimensions

R – Cone Backface “To Clear” Radius1 0.14 in3.600 mm
r – Cup Frontface “To Clear” Radius2 0.06 in1.5 mm

db – Cone Backface Backing Diameter

 2.83 in71.90 mm

Da – Cup Frontface Backing Diameter

 4.15 in105.40 mm

Aa – Cage-Cone Backface Clearance

 0.16 in4.1 mm

Basic Load Ratings

C90 – Dynamic Radial Rating (One-Row, 90 million revolutions)3 7350 lbf32700 N
C1 – Dynamic Radial Rating (Two-Row, 1 million revolutions)4 49400 lbf220000 N
C90(2) – Dynamic Radial Rating (Two-Row, 90 million revolutions)5 12800 lbf56900 N
Ca90 – Dynamic Thrust Rating (90 million revolutions)6 11100 lbf49500 N

Factors

K – Factor7 0.66
e – ISO Factor8 0.88
Y1 – ISO Factor9 0.76
Y2 – ISO Factor10 1.14
G1 – Heat Generation Factor (Roller-Raceway)11 36.8

G2 – Heat Generation Factor (Rib-Roller End)

 13.2
Cg – Geometry Factor12 0.109

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