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Single-Direction Thrust Tapered Roller Bearing

単式スラスト円すいころ軸受 THR・T シリーズ / JTEKT Corporation (Official website) / Listed on page 210 of the document

Thrust tapered roller bearing suited to large axial loads and shock loads. Sizes with bore diameters of 114.3 to 830 mm are listed.

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Single-Direction Thrust Tapered Roller Bearing on page 210 of JTEKT Corporation "JTEKT 大形転がり軸受カタログ（技術解説・軸受寸法表）"
Source: JTEKT Corporation「JTEKT 大形転がり軸受カタログ（技術解説・軸受寸法表）」page 210
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Specifications

Inner diameter d 114.3～830 mm
Outer diameter D 250～1010 mm

How to choose Rolling Bearings

Points to check when selecting, with the values for this product (Single-Direction Thrust Tapered Roller Bearing).

  1. 1. Bore and housing bore dimensions

    This product: Inner diameter d 114.3～830 mm

    Select the bore diameter d to match the shaft seat, the outside diameter D to match the housing bore, and the width B to suit the installation space. Main dimensions are standardized in ISO and JIS dimension series, so interchangeable products can be found by boundary dimension designation. For tapered roller bearings, also check the assembled width T; for thrust bearings, also check the height H.

  2. 2. Dynamic load rating based on life calculation

    The basic dynamic load rating Cr is the reference value for calculating rated life. Verify that the required life is met using the equivalent load during operation and the rotational speed. For ball bearings, life is proportional to the cube of the load ratio, so providing load margin greatly extends life.

  3. 3. Margin for static and shock loads

    The basic static load rating C0r is the allowable standard for permanent deformation generated at the rolling elements and raceways under stationary or low-speed conditions. For applications with oscillating motion or shock loads, confirm that a static safety factor against the maximum load is secured using C0r.

  4. 4. Operating speed and lubrication method

    The limiting speed differs by lubrication method, and separate values are given for grease lubrication and oil lubrication. Confirm that the normal operating speed does not exceed the limiting value, and in high-speed ranges also consider cage material and precision grade. The reference speed can also be consulted as a thermal guideline.

  5. 5. Precision grade and internal clearance

    Precision grades (P0, P6, P5, etc.) indicate rotational accuracy and dimensional accuracy; for high-precision applications such as machine tool spindles, select higher grades. Internal clearance (C2, CN, C3, etc.) is selected to allow for changes caused by interference fit and temperature differences during operation.

  6. 6. Materials and lubrication suited to the environment

    For corrosive, high-temperature, vacuum, or clean environments, select specifications such as rings and rolling elements made of stainless steel or ceramics, or solid lubricants and fluorine grease for vacuum use. Check the operating temperature range, low dust generation, and whether food-grade grease registration applies against the application conditions.

This guide was written by AI based on the listed products' documents and specification items.

About Rolling Bearings and all products

Description

Available in designs with a flange on either or both of the shaft raceway and housing raceway. Used in crane hooks, swivels of oil drilling rigs, and others. Includes full-complement types for screw-down applications.

Features

  • Accommodates large axial loads
  • High resistance to shock loads

Applications

  • Crane hooks
  • Swivels for oil drilling rigs

FAQ

Q. What sizes are available for the Single-Direction Thrust Tapered Roller Bearing THR/T Series?
A. Sizes with bore diameters of 114.3 to 830 mm are listed. Outside diameter D ranges from 250 to 1010 mm.
Q. What load conditions is the Single-Direction Thrust Tapered Roller Bearing THR/T Series suited to?
A. It is a thrust tapered roller bearing suited to large axial loads and shock loads. It features high resistance to shock loads.
Q. What designs are available for the Single-Direction Thrust Tapered Roller Bearing THR/T Series?
A. Designs are available with a flange on either or both of the shaft raceway and housing raceway. Full-complement types for screw-down applications are also included.
Q. What applications is the Single-Direction Thrust Tapered Roller Bearing THR/T Series used for?
A. It is used in crane hooks, swivels of oil drilling rigs, and others.

Written by AI based on the content of the source documents.

Source documents

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