spur gear
1
5.3
- noun
- /spɜr ɡɪr/
- Specialized
:
engranaje recto
- To achieve precise movement, the robot uses a spur gear assembly for its limbs.
- spur gear drive
Examples
-
The engineer explained how the spur gear would mesh perfectly with the other components of the system.
-
Next, an internal spur gear slips over the drive pinion.
Academic text (2000) -
The valves can be equipped with spur gear operators as well as electric motor actuators.
Academic text (1997) -
His groundbreaking experiments on spur gears revealed highly nonlinear behavior that led to significant improvements in their mathematical formulations.
Academic text (2007) -
There are 1,367 spur gears ranging in O.D. from 7 to 505 mm, in face widths from 3 to 90 mm.
Academic text (1994) -
When assembling the motor, make sure the spur gear is aligned correctly with the shaft.
Synonyms
3
8.9
A small gear with few teeth that fits a larger gear
A wheel with straight teeth that fit another wheel to send power between parallel shafts
A round wheel with teeth that makes another wheel turn in a machine
A round wheel with teeth that fits together with another wheel to move parts or change speed
A round wheel with teeth that fits another to change speed or direction
Surface Forms
Morphology
This is a straightforward noun–noun compound: 'spur' (a spike-like projection) modifies 'gear' (a toothed wheel), so the phrase denotes a gear characterized by projection-like teeth. Although the full technical detail (teeth parallel to the axis) is specialist, the basic meaning 'a gear with projecting/spike-like teeth' is directly derivable from the constituents and should be understandable to a B1 learner who knows both words.
Etymology
Spur gear may come from the small pointed spur on a rider's boot, because the gear's straight teeth stick out like those points. Those teeth push the next gear on the same flat level, so spur gear now means a gear with straight teeth that transfer 'turning motion' between two rods that turn side by side.