SEALMASTER series AR insert bearing
The SEALMASTER series AR insert bearing is a ball bearing with an extended inner ring, designed to be mounted in split or solid housings. It is used in equipment where the shaft rotates and needs support with alignment and sealing. MR Accesorios Industriales carries this line for industrial plants in Buenos Aires, Argentina and throughout the country.
The series AR designation reads as a size code: AR followed by numbers that indicate the shaft diameter and sealing variants. For example, AR-1-2, AR-1-14, AR-2-1 and AR-2-2 correspond to different sizes. The numeric suffixes differentiate seal and tolerance configurations. To choose the right one, provide the full code shown on the tag or on the housing.
These insert bearings are used in conveyors, mixers, fans, pumps and agricultural machinery. In Argentina they are common in grain plants, meatpacking plants and metallurgical facilities. Their design allows quick mounting on shafts and seating in split housings, which simplifies maintenance on hard-to-reach equipment.
To select, check the shaft diameter, the sealing type (contact or labyrinth) and the internal clearance. Mounting requires cleanliness, alignment and proper lubrication. In dusty or humid environments, choose seals with greater protection. Locking to the shaft is done with set screws or adapter sleeves, depending on the model. Follow the manufacturer's instructions to avoid premature failures.
Interchangeability between brands is established by dimensions and load capacity, not by the code. If you need to replace an insert bearing from another brand, compare bore, outer diameter and width. MR Accesorios Industriales advises you to find the compatible alternative.
To request a quote, send the exact code you need by WhatsApp, for example AR-2-1 or AR-2-08. You can also ask about the full series. At MR Accesorios Industriales we will reply shortly with availability and purchasing options.




