TIMKEN Bearing LM272249DW

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 LM272249DW

TIMKEN Bearing LM272249DW

Specifications

Series

LM272200

Cone Part Number

LM272249DW

Design Units

Imperial

Cage Type

Stamped Steel

C1 – Dynamic Radial Rating (1 million revolutions)1

380000 lbf1690000 N

C0 – Static Radial Rating

921000 lbf4100000 N

Dimensions

d – Cone Bore

19 in482.6 mm

B – Double Cone Width

6.2500 in158.750 mm

Abutment and Fillet Dimensions

R – Cone Backface “To Clear” Radius2

0.13 in3.3 mm

da – Cone Frontface Backing Diameter

19.84 in504 mm

Ab – Cage-Cone Frontface Clearance

0.23 in5.8 mm

Basic Load Ratings

C90 – Dynamic Radial Rating (90 million revolutions)3

98600 lbf439000 N

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

662000 lbf2950000 N

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

172000 lbf764000 N

Ca90 – Dynamic Thrust Rating (90 million revolutions)6

56100 lbf250000 N

Factors

K – Factor7

1.76

G1 – Heat Generation Factor (Roller-Raceway)

6040

G2 – Heat Generation Factor (Rib-Roller End)

665

Cg – Geometry Factor8

0.233

Product description of TIMKEN Bearing LM272249DW

TIMKEN Bearing LM272249DW, It is Tapered Roller Bearings - Double Tapered Cones - Imperial.Timken® tapered roller bearing assemblies are precisely designed to manage both radial and axial loads, even in the most unforgiving conditions.

Timken offers the most extensive line of tapered roller bearings available anywhere in the world. and related type you may also like TIMKEN Bearing LM278848D.

TIMKEN Bearing LM272249DW, Double Tapered Cones - Imperial, Tapered roller bearings are uniquely designed to manage both thrust and radial loads on rotating shafts and in housings. We manufacture nearly 26,000 tapered roller bearing combinations – in single, double and four-row tapered roller bearing configurations. Customized geometries and engineered surfaces can be applied to these tapered roller bearings to further enhance performance in demanding applications.

TIMKEN Bearing LM272249DW, Double Tapered Cones - Imperial, Tapered roller bearings consist of four interdependent components: the cone, or inner ring; the cup, or outer ring; the tapered rollers, or rolling elements; and the cage, or roller retainer. The taper angles allow the bearing to handle a combination of radial and thrust loads. The steeper the cup angle, the greater the ability of the tapered roller bearing to handle thrust loads.

Quality and Performance Come Standard The Timken name stands for high quality and outstanding performance.Using our captivities in bearing technology manufacturing, engineering support and distribution, we provide our customers with smart, cost-effective friction management and power transmission solutions that help them outperform the competition.

An analytic tapered roller bearing torque model is presented along with laboratory test data. Initial results of this proposed model are favorable. An accurate general purpose torque prediction tool could be obtained by extending the concepts presented in conjunction with a more comprehensive analysis of actual bearing operating conditions. By using EHL (Elastomer hydrodynamic Lubrication) theory and micro-macro contact analysis, the bearing torque can be determined by predicting each torque component for each roller due to raceway rolling, raceway moments due to EHL pressure distribution, and frictional force of rib-roller end contact. The roughness effect of contact surfaces, effect of EHL film thickness parameter (the ratio of film thickness to composite surface roughness), and thermal EHL effects are also included. A bearing torque test rig, which can measure the torque of cup race, cone race, and rib separately, was built and used to provide test data. Good agreement between the experimentally measured bearing torques and the predictions of the new torque model has been obtained. This torque model will provide a greater fundamental understanding and is more versatile over a wide range of operating conditions.

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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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Videos

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