SEALMASTER RPBA 300-C4 CR pillow block bearing

SEALMASTER RPBA 300-C4 CR belongs to pillow block 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 RPBA 300-C4 CR and any equivalents.

The SEALMASTER RPBA-CR line covers mounted bearing units built around a cast iron housing that bolts down to a flat base, holding a rotating shaft in place. Conveyors, fans, mixers and similar machinery rely on this kind of support when alignment has to stay steady under load. MR supplies the series to maintenance and purchasing teams throughout the United States and Latin America.

Reading the code helps you order the right unit. RPBA marks the pillow block family that takes an inserted bearing, and the digits that follow give the shaft size in inches: RPBA 103-C2 CR fits a 1.3/16" shaft, RPBA 104-C2 CR a 1.1/4" shaft, and RPBA 106-C2 CR a 1.3/8" shaft. The -C2 portion defines how the bearing locks onto the shaft, while CR tells you the unit carries contact sealing.

These units turn up in belt conveyors, bucket elevators, mills, mixers and process lines, including food, cement, chemical and agro-industrial plants. Dust, moisture and moderate loads are part of daily operation in those settings, and keeping the mounting reliable is what keeps unplanned downtime away.

Selection comes down to three things: shaft diameter, whether the load is radial, axial or combined, and what the surrounding environment throws at the unit. The CR seal keeps contaminants out and lubricant in. Check the lubrication and make sure the pillow blocks line up with each other, since poor alignment introduces parasitic stresses. Bolt the housing to a rigid, flat base and tighten to the manufacturer's recommendations.

RPBA-CR pillow blocks interchange with other brands built to the same standardized dimensions, though suffixes and tolerances can differ between makers. For a quote, send the full part number, such as RPBA 108-C2 CR, along with your operating conditions, and we can point you to the equivalent option.

Have a pillow block to replace? Message us on WhatsApp or by email with the part number or the shaft dimensions. We reply promptly and can suggest equivalents or help you choose within the SEALMASTER line we supply.