SKF
Cylindrical Roller Thrust Bearings
Cylindrical roller thrust bearings are designed to carry heavy axial loads in one direction, using short cylindrical rollers arranged radially with their axes perpendicular to the shaft axis. SKF offers single direction and double direction variants, with flat or spherical housing washers. The rollers are crowned to eliminate edge stress, and the cage provides precise roller guidance. These bearings are separable, simplifying mounting. They require a minimum axial load to prevent sliding and are suitable for moderate speeds. Typical applications include crane hooks, heavy-duty extruders, rolling mill screw-down mechanisms, and marine propeller thrust blocks. When paired with a aligning seat washer (spherical housing washer), they can compensate for small misalignments.
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Trusted by Industry Leaders
High Axial Load Capacity
Roller line contact supports substantial thrust forces.
Crowned Rollers
Eliminate harmful edge stresses for longer life.
Separable Design
Shaft washer, housing washer, and roller/cage assembly can be mounted individually.
Alignment Compensation Option
Spherical housing washer aligns against mounting surface errors.
Robust Cage Designs
Guide rollers under reversing and oscillating axial loads.
Double Direction Available
Accommodates thrust in both directions with a central shaft washer.
Cylindrical Roller Thrust Bearings in Marine Propeller Shafts
The thrust block in a marine drivetrain absorbs the propeller’s push, transferring it to the hull. Cylindrical roller thrust bearings provide reliable, high-capacity thrust support at continuous speeds, with cooling oil circulated through the housing to manage temperature.
Sizing and Minimum Load Requirements for Thrust Bearings
For proper rolling, thrust bearings must be continuously loaded. SKF provides calculation methods to verify that the applied axial load exceeds the minimum load, preventing roller skidding and wear. If necessary, a spring preload can be added.