TIMKEN Bearing EE280700D - 281200

TDI bearings have a one-piece double inner race and two single outer races and are typically supplied complete with an outer race spacer as a pre-set assembly. The bearing can be used at fixed positions on rotation shaft applications. For rotating housing application it can be used to float on the stationary shaft.
Material: Bearing steels
In Stock:
Photo may not represent actual item. See the technical specification for details.

Specifications of TIMKEN Bearing EE280700D - 281200

TIMKEN Bearing EE280700D - 281200

Specifications

Series

280000

Cone Part Number

EE280700D

Cup Part Number

281200

Design Unit

Inch

Bearing Weight

6.5 lb3 Kg

Cage Material

Stamped Steel

Dimensions

d – Bore

7 in177.8 mm

D – Cup Outer Diameter

12 in304.8 mm

B – Double Cone Width

4.5000 in114.300 mm

C – Cup Width

1.6875 in42.863 mm

T – Bearing Width across Cups

4.3085 in109.436 mm

Abutment and Fillet Dimensions

R – Cone Backface “To Clear” Radius1

0.13 in3.3 mm

r – Cup Backface “To Clear” Radius2

0.130 in3.3 mm

da – Cone Frontface Backing Diameter

7.87 in199.9 mm

Db – Cup Backface Backing Diameter

10.98 in278.89 mm

Ab – Cage-Cone Frontface Clearance

0.08 in2 mm

Basic Load Ratings

C90 – Dynamic Radial Rating (One-Row, 90 million revolutions)3

35100 lbf156000 N

C1 – Dynamic Radial Rating (Two-Row, 1 million revolutions)4

236000 lbf1050000 N

C90(2) – Dynamic Radial Rating (Two-Row, 90 million revolutions)5

61200 lbf272000 N

Ca90 – Dynamic Thrust Rating (90 million revolutions)6

21700 lbf96400 N

Factors

K – Factor7

1.62

e – ISO Factor8

0.36

Y1 – ISO Factor9

1.87

Y2 – ISO Factor10

2.79

G1 – Heat Generation Factor (Roller-Raceway)

591

G2 – Heat Generation Factor (Rib-Roller End)

86

Cg – Geometry Factor11

0.112

Spacer

Note

Spacer shows standard nominal .01 radii, actual bearing may vary

Product description of TIMKEN Bearing EE280700D - 281200

TIMKEN Bearing EE280700D - 281200,Tapered Roller Bearings TDI (Tapered Double Inner) Imperial. Timken® tapered roller bearing assemblies are precisely designed to manage both radial and axial loads, even in the most unforgiving conditions.Double- or two-row Timken® tapered roller bearings feature double cups and two single cones. They are available in a variety of configurations for general industrial and automotive applications. And related type you may also like TIMKEN Bearing EE280700D - 281202.

TDI bearings have a one-piece double inner race and two single outer races and are typically supplied complete with an outer race spacer as a pre-set assembly. The bearing can be used at fixed positions on rotation shaft applications. For rotating housing application it can be used to float on the stationary shaft.

TDI bearings are sometimes used on rotating shaft applications where a loose fit is required for ease of removal.

Size range:
ID 25.400 mm to 1200.150 mm (1.000 in. to 47.2500 in.)
OD 30.480 mm to 2460.000 mm (1.2000 in. to 96.8504 in.)

Design Attributes:
Double cone and two single cups, with or without a cup spacer.
Furnished as a matched assembly.
Cups ground to fit.

Applications:
Gear reduction units
Cranes
Calendar rolls
Industrial machinery

TIMKEN Bearing EE280700D - 281200,Tapered Roller Bearings TDI (Tapered Double Inner) Imperial. A tapered roller bearing includes a retainer formed with a plurality of trapezoidal pockets. Each pocket includes cutouts formed in the crossbars defining each pocket near the narrow end thereof. A tapered roller is received in each pocket with its small-diameter end facing the narrow end of the pocket. Lubricating oil flowing into the bearing space defined radially inwardly of the retainer can quickly flows through the cutouts into the bearing space defined radially outwardly of the retainer at the narrow end of each pocket. Thus, it is possible to reduce the amount of lubricating oil flowing along the raceway of the inner ring to the large-diameter flange, and thus reduce the amount of lubricating oil remaining in the bearing, thereby reducing the torque loss due to rotational resistance of the bearing resulting from lubricating oil remaining in the bearing.

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Literature & catalogs

TIMKEN -LUBRICATION
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TIMKEN -TYPE- TDI
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TIMKEN-TAPERED ROLLER BEARING CAGES
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TIMKEN-TYPE- TS
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