NSK M 84210 tapered roller bearing cup

NSK M 84210 belongs to tapered roller bearing cup, 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 M 84210 and any equivalents.

A tapered roller bearing cup is the outer ring that presses into the housing and provides the raceway the rollers run on. The matching cone, which carries the rollers, sits on the shaft. This NSK cup is supplied against the part number printed on the component or shown on your drawing. Typical service locations include truck and trailer wheel hubs, gearboxes, road construction equipment and other industrial drives that see combined radial and axial loads.

The M series designation starts with the letter M and continues with a five- or six-digit number. Take M 84210, M 84510, M 86610 and M 236810 as examples: the M marks the series, while the digits define the outer diameter, the width and the raceway angle. Because cup and cone are matched as a set, the cup number by itself does not describe a complete bearing. Either keep the original pairing or have the full bearing number checked for an equivalent.

In plant and fleet maintenance these cups turn up in truck and trailer hubs, transmission gearboxes, speed reducers, road construction machinery and milling equipment. They also see service in milling machine spindles and heavy conveyor rollers. As a wear item, the cup comes out together with the cone once pitting, wear or axial play beyond tolerance appears.

Selection starts with axial play, which is set through the cone rather than the cup. The housing bore should be clean, free of burrs and concentric to spec. Seat the cup with a press or a proper driver, and never hammer directly on the raceway. Grease suits low-speed duty, oil suits enclosed gearboxes, and the seal choice depends on how much dust and water the location sees.

Cups for tapered roller bearings interchange across brands by part number and by standardized dimensions. When a customer hands over another maker's number, the match is usually found from the outer diameter, the width and the raceway angle. The final confirmation is always made against the complete bearing part number.