RKB Bearing Products

Double Row Tapered roller Bearings

On March 23, 1895, John Lincoln Scott, a farmer, and carpenter from Wilmot, Indiana, was awarded a patent from the United States Patent Office for his invention of the tapered roller bearing. The purpose of his invention was to improve the performance of wagon wheels used in farming. Today RKB bearing industry is a major player for the design, develop and manufacturing of Tapered roller bearings.  Tapered roller bearings come in a single row, double row, and multi-row configuration. One of the most common variants is a double row tapered roller bearings that design as  TDO, TDONASW, TDI, and TDIS type. These types of bearing can tolerate heavy radial load and axial load in both directions. The bearing dimensions and performance accuracy confirms to ISO/ABMA/GOST standard. The most common applications for Double Row Tapered Roller bearings are Gear Box, Hoisting Equipment, Rolling Mills, and Mining industry.

Tapered roller bearings consist of two basic components; first is the cup and the cone assembly.  The cup is the outer ring and is a separate component.  Second is the cone assembly made up of the inner ring, rollers, and the cage.  Now But let’s talk about the difference between the design in Double Row Tapered Roller Bearing.

TDO design

Have one rib less outer ring ( one double cup) and two inner rings with two ribs each (two single cones) and have two window type press steel cages.

TDI design

Two ribless outer rings (two single cups) and one inner ring with three ribs (one double cone) and have two pieces window type press steel cages.

TDONASW design

Have one ribless outer ring (one double cup) and two inner rings with two ribs each (two single cones) and has one piece window type press steel cage. Design with a lateral shield or seal for contamination protection.

TDIS design

Have two ribless outer rings (two single cups) and one inner ring with three ribs ( one double cone) and have one piece window-type steel cage. Available in steel pin-type cage and pierced roller design.

Double row tapered roller bearings have many advantages related to applications, but service technicians required attention to installing and mounting two rows tapered roller bearings.