Hypoid gearboxes are gearboxes having axes that are non-intersecting and not parallel.[1][2] The hypoid gearboxes are a subcategory of spiral bevel gearbox[3] with the axes of gears at an offset from one another. In comparison to the conical geometry of a spiral bevel gear, the basic geometry of hypoid gear is hyperbolic. The spiral angle of the pinion is larger than the spiral angle of the gear in a hypoid gearbox, so the pinion diameter can be larger than that of a bevel gear pinion. This helps in attaining an enhanced contact surface and a better tooth strength which allows for higher gear ratios and scope of higher torque transmission.[4] Bearings can also be used on both sides of gears for extra rigidity as the offset between the axes allows the scope for extra support.
^Stokes, Alec (13 March 1992). Manual Gearbox Design(PDF). Oxford: Butterworth-Heinemann. pp. 40–49. ISBN 978-0-75060-417-8.
^International Gear Conference 2014: 26th–28th August 2014, Lyon. Elsevier. 2014. pp. 107–117. doi:10.1016/C2013-0-23221-9. ISBN 978-1-78242-194-8.
^Gupta, Kapil; Jain, Neelesh Kumar; Laubscher, Rolf (2017). Advanced Gear Manufacturing and Finishing: Classical and Modern Processes. pp. 1–33. ISBN 978-0-12-804460-5.
in weight. The hypoid gear is also commonly used in some railcar transmissions with diesel power units - where the engine and gearbox are similar to those...
for manual gearboxes and differentials contain extreme pressure (EP) additives and antiwear additives to cope with the sliding action of hypoid bevel gears...
Differential Clutch Motor Gearbox Final drive Differential Drive shafts and constant-velocity joints to each wheel Clutch Gearbox Transfer box Transmission...
component of the car's structure. The rear axle was also a new design with hypoid gearing. The body could be finished in a wide range of colours, both as...
drive differential for strength. The worm drive is not as efficient as a hypoid gear, and such trucks invariably have a very large differential housing...
headers extracts the waste gases, which exit through two shortened mufflers. Hypoid gears and a shaft turns the rear wheel, with the shaft housing forming the...
third) and reverse with a single-plate dry clutch which sent power through a hypoid bevel final drive to the rear axle and its 21" Rudge-Whitworth wire centre-lock...
trains because it generates more noise and vibration than a hypoid does. Bringing hypoid gears to market for mass-production applications was an engineering...
restricted ground clearance was improved by the adoption of a conventional hypoid bevel drive to the rear axle replacing the traditional Daimler underslung...
that the final drive was reliably unreliable, with all examples having the hypoid crown wheel pinion of their final drives fail at around fifty miles, much...
internal friction, and combined with a modified driveline including a new hypoid drive axle, higher power and greater fuel efficiency were attained. It helped...
through a four-speed manual gearbox featuring synchromesh on the top three gears, and final drive in the rear axle was by hypoid gears. The 5.56 L (339 cu in)...
precision) it is controlled by double acting Armstrong hydraulic dampers. Hypoid bevel final drive was fitted for the first time and greatly reduced the...
(3.0 kW) motor. The specification also included a double-reduction hypoidgearbox and hydraulically operated brakes on all four wheels. The Metropolitan...
a Torsen type 1 Torque Sensing differential, instead of the more common hypoid open differential. Both available engines used a Bosch Motronic fully electronic...
live rear axle with hypoid final drive. The braking system is Lockheed hydraulic. The engine is connected to a four-speed gearbox with centrally mounted...
remoter territories". The IIIB also received a new back axle featuring a hypoid bevel in place of the former model's spiral bevel. The IIIC, launched July...
four-speed Wilson-type pre-selector gearbox with a fluid flywheel. Like the DE chassis on which it was based, the DC 27 had hypoid gear drive, independent front...
Goodyear Eagle NCT Gearbox David Brown 4-speed manual, all-synchromesh David Brown 4-speed manual, all-synchromesh Final Drive Hypoid bevel 3.31:1 Powr-lok...
design of coil-sprung independent front suspension with a well-located hypoid bevel driven 'live' rear axle using semi-elliptic springs. The Majestic's...
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