TAPERED ROLLER THRUST BEARINGS
Overview:
Vafem thrust bearings are built to handle high thrust loads and heavy shock. The distinctive on-apex design characteristic of tapered roller thrust bearings ensures true rolling motion, which reduces roller sliding and provides a smoother, cooler-running bearing than other thrust types. Available in a wide range of sizes and design styles, these bearings fi t many types of machinery in the industrial and automotive markets.
• Bore Sizes:
16.1 mm - 1550.0 mm (0.6337 in. - 61.0236 in.)
• Industries:
Aggregate, rubber and plastics, metals, oil, gas and power generation.
• Applications:
Cone crushers, crane hooks, oil well swivels, top drives, extruders, pulverizer drives, rolling mills, machine tool spindles and tables, drilling rig hydraulic heads, gear boxes and pre-heater fans.
• Benefits:
High performance and application flexibility versus other non-tapered bearing types. Large range of product offerings.
VAFEM tapered roller thrust bearings include conical rollers for true rolling motion. These bearings are engineered so that the rollers and raceway converge at a common apex point, which is on the center line of the bearing. Seating force between the rib and roller helps provide positive roller guidance.
VAFEM manufactures several types of heavy-duty tapered roller thrust bearings: standard
(TTHD), V-flat (TTHDFL) and self-aligning V-flat (TTVS). Timken also offers TTSP and TTC, lightduty thrust bearings designed for oscillating applications.
TTHD
The TTHD design has an identical pair of hardened and ground steel rings with tapered raceways. Because both rings have the same bore and O.D., housings should be designed to clear the O.D. of rotating rings and shafts stepped to clear the bore of stationary rings. Controlled-contour tapered rollers are used and equally spaced by a cage. All components are separable. Most TTHD bearings are supplied with case-carburized components, which are well-suited for applications where extremely high thrust loads and heavy shock may be encountered. For very low-speed applications with unusually high loading, TTHD bearings can be supplied with a full complement of rollers. Extensively used in numerous applications, including oil well swivels, top drives, pulp refiners, extruders and gearboxes. Applications for full-complement bearings should be reviewed by your Timken engineer to help ensure selection of the proper bearing.
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