Gearbox Parts
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Gear Sets and Gears
Meshing gear pairs that perform the speed reduction and torque multiplication, including spur, helical, and bevel gears as well as the pinion and bull (drive) gears matched to a specific pump model.
Gearbox Bearings
Rolling-element bearings (tapered roller, cylindrical roller, and ball) that support the input, output, and intermediate shafts and carry the radial and thrust loads generated by the gear mesh.
Shafts and Couplings
Input and output shafts plus flexible, gear-type, or flange couplings that connect the engine or transmission to the gearbox and the gearbox to the pump while accommodating misalignment and damping torsional shock.
Worm Gear Drives
Worm and worm-wheel sets used where high single-stage reduction or a right-angle drive is needed, typically in auxiliary and accessory drives rather than the main power path.
Chain and Sprocket Drives
Roller chain and sprocket assemblies used as an alternative power-transmission element in chain-case drives, providing reduction and offset between shaft centers.
Seals and Gaskets
Lip seals, O-rings, and case gaskets that retain lubricant and exclude contamination at shaft penetrations and housing joints in the gearbox.
Housings and Cases
Cast or fabricated gearbox housings, covers, and bearing carriers that locate the shafts and bearings and contain the lubricant bath or circulation system.
Lubrication Components
Oil pumps, filters, breathers, sight glasses, and fittings that supply and condition the gear and bearing lubricant during operation.
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