Thrust Self-Aligning Roller Bearings

Specifications

How to choose Spherical Roller Thrust Bearings

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

1. 1. Select bore to suit shaft diameter

   This product: Inner diameter d 100～1060 mm

   The bore d is the bore of the shaft washer and is determined by the shaft diameter to be fitted. Listed products range from 60 to 1600 mm. Even at the same bore, the 292, 293 and 294 series differ in outside diameter, height and load capacity, so confirm bore and series together.

2. 2. Check housing space by outside diameter and height

   This product: Outer diameter D 170～1400 mm

   The outside diameter D defines the housing bore, and the height H defines the axial assembly space. Heavier series have larger outside diameter and height and higher load capacity, so check dimensions against both housing design constraints and required load capacity.

3. 3. Verify dynamic load rating for life calculation

   The basic dynamic load rating Ca is the reference value for life calculation under rotating axial load. When radial load is also applied, convert to equivalent load for evaluation. Some products specify that radial load should be 55% or less of axial load, so check the load ratio as well.

4. 4. Use static load rating for static and shock loads

   The basic static load rating C0a is a guideline for the permissible axial load during standstill, very low speed or shock loading. For applications with start-up shock or heavy loads while stopped, check the safety factor against the static rating as well as the dynamic rating.

5. 5. Judge rotational speed by two limits

   The reference speed is a guide based on heat generation, and the limiting speed is the maximum mechanically permissible speed. If the operating speed exceeds the reference speed, consider heat generation including lubrication method and cooling. Oil lubrication is common for this type.

6. 6. Check permissible misalignment against shaft tilt

   This product: Permissible self-aligning angle 0.035～0.052 rad

   The permissible misalignment angle is the shaft tilt the bearing can accommodate. Listed products range from 0.035 to 0.052 rad. Confirm that shaft deflection and housing mounting error fall within this range. Exceeding it causes uneven load distribution and can lead to early damage.

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

About Spherical Roller Thrust Bearings and all products

Description

Thrust self-aligning roller bearings with bore diameters of 100 to 1060 mm. The spherical housing race washer provides self-aligning capability. Not suitable for high-speed rotation. Main dimensions, basic load ratings, and mounting dimensions are listed for each model number.

FAQ

Q. Under what load conditions can thrust self-aligning roller bearings (293, 294, 292 series) be used?

A. They have a large axial load capacity, and radial load can be applied in combination up to 55% or less of the axial load.

Q. What is the self-aligning capability and suitability for high-speed rotation of thrust self-aligning roller bearings (293, 294, 292 series)?

A. The spherical housing race washer provides self-aligning capability. The product is not suitable for high-speed rotation.

Q. What are the ranges of bore diameter, outer diameter, and permissible misalignment angle for thrust self-aligning roller bearings (293, 294, 292 series)?

A. Bore diameter d ranges from 100 to 1060 mm, outside diameter D ranges from 170 to 1400 mm, and permissible misalignment angle ranges from 0.035 to 0.052 rad.

Q. What applications and lubrication methods are thrust self-aligning roller bearings (293, 294, 292 series) used for?

A. They are used for heavy-load axial support and rotating parts of large machinery. Oil lubrication is commonly used.

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

Source documents

• Catalog JTEKT 大形転がり軸受カタログ（技術解説・軸受寸法表） Open page 220
  Found on: https://koyo.jtekt.co.jp/support/catalog-download/