NTN REL212-204 insert bearing

NTN REL212-204 belongs to insert 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 REL212-204 and any equivalents.

The NTN REL2 series covers insert ball bearings built with an extended inner ring and a spherical outer ring, which is what allows them to sit in split plummer block housings and Y-bearing units. A shaft can be locked to the inner ring while the housing takes care of alignment, and the sealing arrangement keeps grease in and contamination out. MR Industrial Accessories supplies this series and helps buyers match the exact variant to the equipment.

Reading the code is straightforward. The letters REL are followed by a size number, so REL204 fits a 20 mm shaft, REL205 a 25 mm shaft and REL206 a 30 mm shaft. Suffixes such as REL204-012 or REL205-013 point to versions with non-standard bore or width dimensions. Every unit in the series shares the same two defining traits: set screws on the extended inner ring for shaft locking, and a spherical outer ring that can self-align inside the housing.

These bearings turn up in conveyors, grain elevators, mixers, fans, pumps and machinery in the food, textile, woodworking and agricultural sectors. Plants and workshops choose them when mounting has to be simple and maintenance access is limited. Because the bearing is sealed, it handles dusty, moderately humid and vibrating conditions well, as long as the seal type matches the environment.

Selection starts with shaft diameter, then load type, whether radial, axial or combined, followed by rotation speed and site conditions. Sealing options range from single to double contact, and certain models include an extra groove for a radial shaft seal. At installation, confirm the housing is aligned and the set screws are tightened properly on the shaft, and lubricate with lithium grease or an equivalent. In very dirty areas, a variant with heavier sealing is the better choice.

Interchange is possible with insert bearings from other manufacturers that use the same dimensional nomenclature, including SKF, FAG, NSK and Timken, when bore, outer diameter and width all line up and the locking method is the same. Check the sphericity angle of the outer ring and the position of the set screw holes before committing. MR Industrial Accessories can point you to a suitable equivalent reference.

To request a quote, send the part number or the size you need by WhatsApp or email. The team responds quickly and will confirm which variant suits your equipment, along with advice on the matching housing and mounting accessories.