Tapered Roller Thrust Bearings
Thrust tapered roller bearings are rolling bearings that use conical rollers placed between raceways to support large axial loads. The apexes of the roller and raceway conical surfaces converge at one point on the bearing axis, so the rollers roll without sliding. Single-direction types accept axial load in one direction, and double-direction types accept load in both directions. Full-complement types, which pack rollers without a cage, are also available. Full-complement types have a high static rated load and suit heavy shock loads. Applications include screw-down devices on rolling mills (reduction devices that adjust roll gap) and thrust support for heavy large machinery.
-
Tapered Roller Thrust Bearings
Full Roller Thrust Tapered Roller Bearing THR Type for Screw Down
Full roller thrust tapered roller bearing for screw down of rolling mills. Dimensions vary by model number within an outside diameter range of 149 to 641 mm.
JTEKT Corporation
-
Tapered Roller Thrust Bearings
Full Roller Thrust Tapered Roller Bearing for Screwdown THR…X Type
Full roller thrust tapered roller bearing for screwdown, THR…X type. Dimensions vary by model number with outside diameters ranging from 149 to 900 mm.
JTEKT Corporation
-
Tapered Roller Thrust Bearings
Double-Row Thrust Tapered Roller Bearing
Double-row thrust tapered roller bearing with bore diameter of approximately 160 to 420 mm. A large bearing that supports heavy axial loads, with dimensions and load ratings varying by model number.
JTEKT Corporation
How to choose Tapered Roller Thrust Bearings
-
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. Check static rated load for shock and static loads
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. Estimate life using dynamic rated load
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. Match shaft and housing dimensions
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. 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. 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. Check each manufacturer's documents before adopting.