RKB 81144 cylindrical roller thrust bearing

RKB 81144 belongs to cylindrical roller thrust bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 81144 and any equivalents.

For equipment that must carry heavy axial loads in one direction, RKB cylindrical roller thrust bearings from the 811 series are a practical solution. Their cylindrical rollers and precision washers provide a rigid, high-capacity thrust support, making them suitable for hydraulic presses, large gearboxes, cutting tables, mining machinery, steel and cement plants, and heavy machine tools. They are not designed to accommodate angular misalignment.

The part number tells you the bore size directly. The series is written as 811/ followed by the bore diameter in millimeters, with no conversion needed. For instance, 811/500 is a bearing with a 500 mm bore. The same pattern applies to larger sizes such as 811/530, 811/560, 811/600, 811/630, 811/670, 811/710 and 811/750. Reading the code this way speeds up identification when you are working from a drawing or a worn part.

These thrust bearings are built for high axial loads and moderate speeds. Their dismountable design simplifies assembly and maintenance, which is helpful when the bearing sits in hard-to-reach equipment. In operation, the load must be distributed evenly over the rollers. Correct selection depends on the axial load, the rotation speed and the space available. Because the bearing does not allow angular misalignment, the washers must be aligned and the support surfaces must be parallel.

Lubrication and sealing should match the working environment. In dusty or wet conditions, additional protection is recommended to keep contaminants out. When replacing a bearing, compare the bore diameter, outer diameter and total height, and check tolerances and axial clearance for the application. Cylindrical roller thrust bearings in this series can be interchanged with other brands that use the same dimensional designation, so a part number from another supplier can be cross-referenced.

To request a quote, send the full part number or the main dimensions via WhatsApp or email. If the part is not identified, the bore, outer diameter and height are enough to guide the selection. The team can also suggest equivalents and help confirm the right option for the application.