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Self-Aligning Roller Bearings

自動調心ころ軸受 R・RR・RH・RHR・RHAタイプ / JTEKT Corporation (Official website) / Listed on page 240 of the document

Self-aligning roller bearings with bore diameters of 100 to 260 mm. Available with cylindrical and tapered bores for heavy-load and shock-load applications.

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Self-Aligning Roller Bearings on page 240 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 240
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Specifications

Inner diameter d 100〜260 mm
Outer diameter D 150〜400 mm
Basic dynamic load rating Cr 262〜3550 kN
Permissible self-aligning angle 0.017〜0.044 rad
Width B 75～462 mm
Mass 0.87～62 kg

How to choose Rolling Bearings

Points to check when selecting, with the values for this product (Self-Aligning Roller Bearings).

  1. 1. Bore and housing bore dimensions

    This product: Inner diameter d 100〜260 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

    This product: Basic dynamic load rating Cr 262〜3550 kN

    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

Self-aligning roller bearings with high rated load capacity and self-aligning capability. Lists cylindrical bore and tapered bore model numbers, and provides basic load ratings, fatigue limit loads, mounting dimensions, axial factors, and other specifications.

Features

  • Self-aligning capability
  • Tapered bore allows easy mounting and dismounting with adapters or removal sleeves
  • RH and RHR types offer excellent high-speed performance

Applications

  • Low- to medium-speed heavy-load applications
  • Applications subject to shock loads
  • Locations with shaft or housing deflection or misalignment

FAQ

Q. What are the bore and outside diameter ranges for Self-Aligning Roller Bearings R, RR, RH, RHR, and RHA types?
A. The bore diameter d ranges from 100 to 260 mm, and the outside diameter D ranges from 150 to 400 mm.
Q. Can Self-Aligning Roller Bearings R, RR, RH, RHR, and RHA types be used in locations with shaft or housing deflection or misalignment?
A. Yes. They are indicated for applications where shaft or housing deflection or misalignment occurs, and they have self-aligning capability. The permissible misalignment angle is 0.017 to 0.044 rad.
Q. What are the mounting methods and high-speed performance of Self-Aligning Roller Bearings R, RR, RH, RHR, and RHA types?
A. Tapered bores allow easy mounting and dismounting using adapters or removal sleeves. The RH and RHR types offer excellent high-speed performance.
Q. What are the basic dynamic load ratings and applications of Self-Aligning Roller Bearings R, RR, RH, RHR, and RHA types?
A. The basic dynamic load rating Cr is 262 to 3550 kN. They are suited for low- to medium-speed heavy-load applications and applications subject to shock loads.

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

Source documents

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