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Type TTHD-Thrust Tapered Roller Bearing

Bearing Timken

Type TTHD-Thrust Tapered Roller Bearing

TTHD bearings consist of two thrust races, a set of rollers and a cage. This design can create up to 40 percent more capacity than cylindrical and spherical bearings with the same envelope dimensions.

The configuration of TTHD bearings creates a benefit called true rolling motion. The extensions of the raceways and rollers converge at a common point (the apex) on the axis of rotation. As a result, true rolling motion reduces heat generation and wear on the races and rollers.

Size ranges:

ID 34.925 mm to 1352.550 mm (1.3750 in. to 53.2500 in.)

OD 76.200 mm to 1524.000 mm (3.0000 in. to 60.0000 in.)

Design Attributes:
  • We make bearings from premium quality, case-carburized bearing steel and feature a hard, fatigue-resistant surface and a durable, crack-resistant core to maximize service life. High-quality materials also provide a high shock resistance in heavy load applications.
  • Timken designed TTHDs for high thrust-load capacity and applications with increased pressures.
  • The true rolling motion of TTHDs allow for higher speeds with minimum roller skewing or skidding.
  • Special profiles on TTHDs create an advanced geometry and minimize edge-stress concentrations caused by high thrust loads.
  • Enhanced material, special finishes and increased precision also can be applied to further extend bearing life.
  • Additional bearing capacity is available with TTHDFL design, which features a different cage and one flat-thrust race.
Applications:

Type TTHD bearings are engineered for use in:

  • Machine tools
  • Mill stands
  • Oil well swivels
  • Plastic extruders
  • Pulp refiners

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