SEALMASTER USRBF5520A-308 mounted spherical roller bearing

SEALMASTER USRBF5520A-308 belongs to mounted spherical roller bearing, part of our Bearing housings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for USRBF5520A-308 and any equivalents.

SEALMASTER USRB5500A series housings are mounted units that combine a spherical roller bearing with a housing and shaft locking system. They are used on rotating shafts that carry radial load and moderate thrust in continuous-duty equipment. Having the bearing, housing and locking integrated simplifies assembly and cuts commissioning time. MR Industrial Accessories LLC supplies these units to plants across the United States and in several Latin American countries, and can help you identify the right replacement.

The USRB5500A part number breaks down into blocks: the first letters indicate the housing type, the four-digit number gives the housing size, and the final letter shows the locking or sealing variant. In examples like USRBF5515A-207 and USRBF5520A-308, the number after the hyphen is the shaft diameter the unit fits. Because of this, always provide the complete part number when asking for a replacement—two units from the same series can differ in shaft diameter and locking style.

Typical applications include belt and roller conveyors, bucket elevators, mixers, mills, screens and process equipment in food, cement, mining and aggregate plants. They also appear on road machinery, stockpiling belts and industrial ventilation systems. The spherical roller bearing inside handles slight shaft misalignment and combined loads, as long as you stay within the manufacturer's limits for each size.

When selecting a unit, check three things: shaft diameter, shaft locking type and the sealing needed for the environment. In dusty, wet or frequently washed areas, choose contact seals and oil seals that protect the bearing. During installation, confirm that the housing is aligned with the shaft, that anchor bolts are tightened evenly and that initial lubrication is correct. Poor alignment or uneven tightening will shorten bearing life even if the unit itself is the right one.

Mounted units like these are often interchanged between brands by shaft number and housing configuration rather than by each maker's catalog code. The equivalent is found by matching shaft diameter, bearing type, locking and sealing. MR Industrial Accessories LLC can point you to a compatible alternative or, if needed, manufacture a custom solution. Send the part number or model via WhatsApp or email and we will reply promptly with a quote.