spur gear: meaning, definition, pronunciation and examples
C1+ / SpecializedTechnical / Engineering
Quick answer
What does “spur gear” mean?
A cylindrical gear with straight teeth cut parallel to its axis, used to transmit motion between parallel shafts.
Audio
Pronunciation
Definition
Meaning and Definition
A cylindrical gear with straight teeth cut parallel to its axis, used to transmit motion between parallel shafts.
The simplest and most common type of gear, representing the basic concept in gear design and power transmission. In broader contexts, it can symbolize straightforward, direct mechanisms or solutions.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Both regions use 'spur gear' as the standard technical term.
Connotations
Neutral technical term in both varieties.
Frequency
Equally common in technical contexts in both regions.
Grammar
How to Use “spur gear” in a Sentence
The [driver/driven] spur gear [meshes with/engages] the [other gear/idler].A spur gear [transmits torque/converts rotational motion] between [parallel shafts/a motor and a load].Vocabulary
Collocations
Examples
Examples of “spur gear” in a Sentence
noun
British English
- The vintage clock mechanism relies on a finely crafted brass spur gear.
- You'll notice more whining from a spur gear system compared to a helical one.
American English
- The problem was traced back to a cracked spur gear in the transmission.
- For this application, a spur gear is more cost-effective than a helical gear.
Usage
Meaning in Context
Business
Rare, except in procurement, manufacturing, or technical sales discussions ('We need to order replacement spur gears for the assembly line').
Academic
Common in engineering, physics, and design textbooks and papers ('The efficiency of the spur gear pair was calculated under load').
Everyday
Very rare. Used only when explaining mechanical devices in simple terms ('The hand drill uses a set of spur gears to change the speed').
Technical
The primary context. Pervasive in mechanical engineering, automotive design, robotics, and industrial maintenance manuals ('Align the two spur gears precisely to avoid premature wear').
Vocabulary
Synonyms of “spur gear”
Strong
Neutral
Weak
Vocabulary
Antonyms of “spur gear”
Watch out
Common Mistakes When Using “spur gear”
- Pronouncing 'spur' and 'gear' as one word (/ˈspɜːɡɪə/). They are two distinct words.
- Using 'spur gear' to refer to any type of gear.
- Confusing 'spur gear' with 'sprocket' (which is for chains).
FAQ
Frequently Asked Questions
Spur gears tend to be noisier, especially at high speeds, because the straight teeth engage with a single impact across the entire face width.
No, by definition, spur gears are designed to transmit motion between parallel shafts. For intersecting (perpendicular) shafts, bevel gears are used.
Yes, but primarily in applications where noise is less critical, such as in the starter motor drive, oil pump, or some manual transmission components. Helical gears are more common for the main transmission gears due to their quieter operation.
It refers to the straight, radial projection of the teeth, similar to the prong (spur) on a rider's boot. It distinguishes them from angled (helical) or curved (herringbone) teeth.
A cylindrical gear with straight teeth cut parallel to its axis, used to transmit motion between parallel shafts.
Spur gear is usually technical / engineering in register.
Spur gear: in British English it is pronounced /ˈspɜː ɡɪə/, and in American English it is pronounced /ˈspɝ ɡɪr/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “As straightforward as a spur gear.”
Learning
Memory Aids
Mnemonic
Imagine a knight's SPUR - simple, straight, and pointed. A SPUR gear has straight teeth that point outwards, just like a spur.
Conceptual Metaphor
A spur gear is the MODEL-T FORD of gears: fundamental, reliable, direct, but can be noisy and lacks sophistication compared to newer designs.
Practice
Quiz
What is a key distinguishing feature of a spur gear?