spur gear

English

Noun

spur gear (plural spur gears)

1. (mechanical engineering) The simplest type of gear wheel, with teeth projecting radially, parallel to its axis.

   Synonym: spur-wheel

   • 1962 June, “Beyond the Channel: U.S.S.R.: A 3,000 h.p. diesel-hydraulic from MaK”, in Modern Railways, page 416:

     Each axle has its own final drive two-step reduction, a bevel gear set and a spur gear set which drives the axle. Of these, the spur gears take most of the stress and the bevel gears provide optimum reduction at high speed and low torque—an arrangement which makes for easier assembly and reduced load for the bevel gears.

Hypernyms

• gear, gear wheel

Coordinate terms

• bevel gear, herringbone gear, hypoid gear, pinion, rack

References

• “spur gear”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.