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Double-Row Tapered Roller Bearings (Outward-Facing) TDO/TDOS Type

TDO・TDOS形 / JTEKT Corporation (Official website) / Listed on page 160 of the document

Double-row tapered roller bearings with outward-facing outer rings. Numerous bore numbers listed from around 100 mm to over 280 mm in bore diameter.

Last verified: (date the content was verified against the source document)

Double-Row Tapered Roller Bearings (Outward-Facing) TDO/TDOS Type on page 160 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 160
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Specifications

Inner diameter d 100～280.192 mm
Outer diameter D 150～533.400 mm
Basic dynamic load rating Cr 226～3820 kN
Width T 76.200～410 mm

How to choose Tapered Roller Bearings

Points to check when selecting, with the values for this product (Double-Row Tapered Roller Bearings (Outward-Facing) TDO/TDOS Type).

  1. 1. Dimension series matching shaft and housing

    This product: Inner diameter d 100～280.192 mm

    Bore d matches the shaft diameter and outside diameter D matches the housing bore. Tapered roller bearings come in metric and inch series, and bearings of similar size are not interchangeable. When replacing bearings in existing machinery, confirm the series of the boundary dimension designation, and check inner ring width B and outer ring width C against the step dimensions of the mounting section.

  2. 2. Managing preload with assembled width T and tolerance

    This product: Width T 76.200～410 mm

    Width T is the overall width of the inner and outer rings when assembled, and it affects axial mounting dimensions and the adjustment amount for preload or clearance. The assembled width tolerance class changes the effort required for adjustment, so when used in pairs, confirm T and its tolerance class.

  3. 3. Estimating life with basic dynamic load rating

    This product: Basic dynamic load rating Cr 226～3820 kN

    Basic dynamic load rating Cr is the basis for life calculation. From radial and axial loads, the dynamic equivalent load is obtained using factor e and load factor Y1, and rated life is calculated from the ratio to Cr. The listed Cr values range from 9.5 kN to several tens of thousands of kN and vary greatly with the number of rows.

  4. 4. Checking shock and low-speed use with static load rating

    For applications with stationary operation, very low speed, or shock loads, check the margin against permanent deformation using the ratio of basic static load rating C0r to the static equivalent load (calculated with Y0). For heavy-duty rolling mills and similar uses, secure capacity with double-row or four-row types.

  5. 5. Determining shaft support by load action point position

    Tapered roller bearings have load action points located away from the end face, and the span between supports changes depending on back-to-back or face-to-face arrangement. Use the load action point position a for calculating shaft deflection and reaction forces, and determine the mounting direction accordingly.

  6. 6. Matching rotational speed and lubrication method

    The permissible rotational speed is set higher for oil lubrication than for grease lubrication. Confirm that the operating speed is within the value for each lubrication method. For differentials and other applications where energy saving is required, low-torque types showing the friction torque reduction rate are also candidates.

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

About Tapered Roller Bearings and all products

Description

Outward-facing (integral outer ring) double-row tapered roller bearings. The table lists dimensions for bore diameters of approximately 100 to 280 mm, basic dynamic load rating, fatigue limit load, mounting dimensions, and axial factor.

Features

  • Double-row arrangement with integrated outer ring assembly
  • Special chamfer shape (SP) available

Applications

  • Main shafts of industrial machinery
  • Rotating parts subjected to heavy loads

FAQ

Q. What applications are the TDO/TDOS Type Double-Row Tapered Roller Bearings (Outward-Facing) suitable for?
A. They are used for main shafts of industrial machinery and rotating parts subjected to heavy loads.
Q. What are the bore and outside diameter ranges of the TDO/TDOS Type Double-Row Tapered Roller Bearings (Outward-Facing)?
A. Bore diameter d ranges from 100 to 280.192 mm, and outside diameter D ranges from 150 to 533.400 mm.
Q. What are the basic dynamic load rating and width ranges of the TDO/TDOS Type Double-Row Tapered Roller Bearings (Outward-Facing)?
A. Basic dynamic load rating Cr ranges from 226 to 3820 kN, and width T ranges from 76.200 to 410 mm.
Q. What are the structural features of the TDO/TDOS Type Double-Row Tapered Roller Bearings (Outward-Facing)?
A. They have a double-row arrangement with integrated outer ring assembly and are available with a special chamfer shape (SP).

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

Source documents

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