Double-Row Thrust Tapered Roller Bearing

Specifications

How to choose Tapered Roller Thrust Bearings

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

1. 1. Select the type by load direction

   Single-direction types accept axial load in one direction only, and double-direction types accept load in both directions. Characteristics also vary depending on whether a cage is fitted or the bearing is full-complement. Organize the load direction, presence of rotation, and presence of shock loads before deciding the type.

2. 2. Check static rated load for shock and static loads

   This product: Basic static load rating C0a 2950～32800 kN

   For applications such as screw-down devices that receive large loads or shocks at low speed or at rest, static rated load is the selection criterion. Listed products range widely from 2190 to 98200 kN, and full-complement types have particularly high values. Confirm that there is sufficient margin against the maximum load.

3. 3. Estimate life using dynamic rated load

   This product: Basic dynamic load rating Ca 823～6530 kN

   For applications where the bearing receives load while rotating, calculate rated life from the dynamic rated load. Listed products range from 823 to 6530 kN. Verify that the required life time is met based on the actual axial load and rotational speed.

4. 4. Match shaft and housing dimensions

   This product: Outer diameter D 190～860 mm

   Match the bore to the shaft diameter and the outside diameter to the housing bore. Listed products have bores of 160 to 550 mm and outside diameters of 149.2 to 900 mm. Even with the same outside diameter, series may have different mounting dimensions depending on model number, so check against the dimension tables when replacing existing equipment.

5. 5. Confirm assembly height fits the equipment

   Height determines the axial mounting space. For large bearings, differences in height affect equipment structure. Do not select based on load capacity alone; confirm that the assembly height fits within the axial dimensions of the equipment.

6. 6. Check the rotational speed limit

   Full-complement types have rollers in contact with each other, so they are not suited to high-speed rotation. Confirm that the operating speed does not exceed the permissible speed. If it does, consider a caged type or a lubrication method.

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

About Tapered Roller Thrust Bearings and all products

Description

Large double-row thrust tapered roller bearing with outer diameter of approximately 280 to 860 mm and bore diameter of approximately 160 to 550 mm. Main dimensions, basic load ratings, fatigue limit load, mounting dimensions, and mass are listed for each model number.

FAQ

Q. For which load-bearing applications is the 2THR series double-row thrust tapered roller bearing suitable?

A. It is a large bearing capable of supporting large axial loads, used for thrust support in heavy-duty large machinery and rolling mill equipment.

Q. What are the dimension and load rating ranges of the 2THR series?

A. Bore diameter d is 160 to 550 mm and outer diameter D is 190 to 860 mm. Basic dynamic load rating Ca is 823 to 6530 kN, and basic static load rating C0a is 2950 to 32800 kN.

Q. Do dimensions and load ratings differ by model number in the 2THR series?

A. Yes, dimensions and load ratings differ by model number. Main dimensions, basic load ratings, fatigue limit load, mounting dimensions, and mass are listed for each model number.

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 211
  Found on: https://koyo.jtekt.co.jp/support/catalog-download/