NSK FH503901A needle roller thrust bearing

NSK FH503901A belongs to needle 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 FH503901A and any equivalents.

Needle thrust bearings in the NSK FH series are built to carry axial loads where radial space is limited. You will find them in gearboxes, clutches and steering systems, among other assemblies that need a shallow, one-direction thrust solution. MR supplies these bearings and quotes them against your exact part number or measurements.

Reading an FH part number is straightforward once you know the pattern. The FH prefix identifies the series, the digits that follow tie back to size and variant, and a trailing letter such as A points to a design or tolerance detail. Take FH502201A, FH502702A and FH503901A: all three belong to the same series but differ in dimensions and internal arrangement. Before you order, confirm shaft and housing dimensions and the direction the axial load will travel.

These bearings turn up in automotive work, machine tools, transmission equipment and agricultural machinery. Repair shops see them inside gearboxes, pumps and clutch systems. Because the section height is small, they fit into spots that will not accept a conventional thrust bearing, which makes them a practical answer for unidirectional axial loading.

Selection comes down to the axial load the application will see, the speed of rotation and how the bearing will be lubricated. Shaft and housing must line up accurately so the bearing does not run under eccentric load. Grease or oil can be used depending on the setup, and keeping the surrounding area clean matters to avoid contamination. Where there is room, pairing the bearing with support washers helps spread the load.

Interchange is possible between needle thrust bearings from different makers when the key dimensions and load capacity line up. Check tolerances and the design of mating parts before substituting. If you are working from another brand's number, send it over and we can point you to the matching option. For critical components, it is worth having a specialist review the change first.

To get a quote on the NSK FH series needle thrust bearing you need, message us on WhatsApp with the part number or the measurements. We will respond promptly. If you are after a particular variant, include the model and we will take it from there.