INA RA108-NPP-B y-bearing (insert bearing)

INA RA108-NPP-B belongs to y-bearing (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 RA108-NPP-B and any equivalents.

The INA RA-NPP-B series Y-bearing is a ready-to-mount insert with a spherical outer ring and set screws for shaft locking. It fits into split or pillow block housings and suits equipment where the shaft turns on simple supports and minor misalignment must be absorbed. MR Industrial Accessories LLC supplies this INA line from Miami, Florida, serving customers across the United States, Canada, Mexico and South America.

Reading the RA-NPP-B code helps you order the right insert. The RA prefix denotes the Y-bearing series with a spherical outer ring. The first number gives the shaft diameter. When a second number appears after a hyphen, as in RA104-206-NPP-B, it refers to the insert's outer diameter. The NPP suffix means double contact sealing, and the final B identifies the inner ring design. So RA100-NPP-B and RA108-NPP-B belong to the same series but differ in shaft size.

These bearings are found in belt conveyors, bucket elevators, mixers, mills, packaging lines and process equipment in food, chemical and aggregate plants. Split housings simplify mounting and maintenance because you can service the bearing without dismantling the entire shaft. Road machinery and material handling equipment also use them.

Selection depends on shaft diameter and the housing seat. The NPP seal keeps dust and splashes out, but it does not replace lubrication. Verify that the grease suits your temperature and speed conditions. During mounting, align the housing and tighten the set screws onto the shaft without striking the insert. Excessive misalignment shortens service life even with a spherical outer ring.

INA Y-bearings interchange with other European brands that use equivalent designations, such as YAR, YET or GRA series from other manufacturers. Interchangeability depends on shaft dimensions, outer diameter and insert width, not only on the part number. If you are replacing an existing bearing, send the measurements or the part number stamped on the insert and we will confirm a matching equivalent.

MR Industrial Accessories LLC supplies the INA line. If you have the part number of the Y-bearing you need, write to us on WhatsApp or email and we will reply promptly with a quote. We can also help you identify a replacement if you send a photo or the shaft and housing measurements.