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RBC domestically produces and stocks a line of heavy duty tapered roller thrust bearings with inside diameter sizes ranging from 1.75 inches (44.45 mm) to 16 inches (406.40 mm). These highly engineered bearings are designed for demanding applications operating in harsh environments, such as oilfield top drives, oilfield swivels, extruders, pulp and paper mill equipment, and boring mill tables. The RBC TRTB bearings are manufactured from high quality, high cleanliness, carburizing grade bearing steels for excellent service life and are also available in RBC’s proprietary MAX3™ steel for optimized, extended service life requirements (see page 60 for more MAX3™ detail). Standard designs incorporate a robust machined brass cage, however, most of these bearings can be supplied with a pin-type cage for applications requiring increased load capacity.

Key Features: 
  • Interchangeable with Industry Standard Product Offerings 
  • High Shock Load Resistance 
  • Application Flexibility – Designs with Bore Reliefs Available 
  • Optimized Load Capacity – Maximized Service Life Potential 
  • Best Industry Lead Times 
  • Available as MAX3™ Steel Bearings 
  • Excellent Engineering Support




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Unit of Measure
Items TRTB-Closed
TRTB1120
Tapered Roller Thrust Bearing
TRTB-Closed
TRTB441
Tapered Roller Thrust Bearing
TRTB-Closed
TRTB711
Tapered Roller Thrust Bearing
TRTB-Closed
TRTB921
Tapered Roller Thrust Bearing
TRTB-Closed
TRTB1011
Tapered Roller Thrust Bearing
Bore N/A 11.00 in N/A 4.40 in N/A 7.00 in N/A 9.25 in N/A 10.00 in
Type N/A Tapered Roller Thrust Bearing
Outside Diameter (D) N/A 23.75 in N/A 8.80 in N/A 14.50 in N/A 21.50 in N/A 21.25 in
Height N/A 5.375 in N/A 2.2 in N/A 3.250 in N/A 5 in N/A 4.625 in
Shaft Fillet Radius N/A 0.44 in N/A 0.13 in N/A 0.31 in N/A 0.63 in N/A 0.44 in
Style N/A
Series N/A TRTB
Material N/A Case Hardened Bearing Quality Steel
Cage Material N/A Machined Bronze
Enclosure N/A
Dynamic Load N/A 1590000 lbf N/A 263000 lbf N/A 587000 lbf N/A 1304000 lbf N/A 1166000 lbf
Static Load N/A 7000000 lbf N/A 842000 lbf N/A 2058000 lbf N/A 4427000 lbf N/A 4339000 lbf
Weight N/A 467.38 lb N/A 25.13 lb N/A 106.7 lb N/A 376.99 lb N/A 324.08 lb
Applications N/A Oil field top drives, oil field swivels, extruders, pulp refiners, pulp digesters N/A Oil field top drives, oil field swivels, extruders, pulp refiners, pulp digesters N/A Oil field top drives, oil field swivels, extruders, pulp refiners, pulp digesters N/A Oil field top drives, oil field swivels, extruders, pulp refiners, pulp digesters N/A