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FRB Bearings crossed roller bearings (TXRs) are designed to offer the highest levels of rotation accuracy and rigidity while conserving space and saving material costs. Able to withstand high overturning moments, TXR bearings are ideal for the table bearing of machine tools, including vertical boring and grinding machines. They also are uniquely suited to many pivot and pedestal applications where space is limited or the lowest possible center of gravity of a rotating mass is required.

Size ranges: 457.2 mm - 1549.4 mm (8 in. to 61 in.)

Design Attributes
1) TXRs feature two rows of rollers in the space of one and its cross section occupies little space, resulting in less housing material, reduced machining requirements and reduced cost.
2) Line contact on the roller raceway and roller configuration provide maximum accuracy of rotation, high stability and greater tilting stiffness.
3) Adjustable design for optimum preload lengthens bearing life, maximizes rigidity and provides for minimum runout.
4) Design allows for lubricants and contaminants to be easily purged.
5) Nylon separators provide low inertia and low running torque.
6) Components are made from case-carburized steel, which provides a tough, shock-resistant core and hard surfaces.

Applications
Precision rotary and indexing tables for machine tools
Vertical and horizontal boring mills
Vertical grinding machines
Rotary surface grinding machines
Large gear hobbing machines
Gun and radar turrets
Large radio and optical telescopes
Swiveling cameras
Steering pivots and casters
Pivots where height is restricted
Microscope tables
Cane center pivots
Swiveling bogies
Welding manipulators
Large tanker mooring buoys
Rotary assembly jigs
Industrial robots