Translation guide
An axle is a central shaft for a rotating wheel or gear. In Japanese, the most common word is 車軸 (しゃじく), but the specific term depends on the context, such as vehicle type or mechanical precision.
The shaft on which a wheel or pair of wheels rotates, especially in vehicles.
General term for axle of a vehicle. Used for cars, trains, and other wheeled vehicles.
車軸が折れた。
The axle broke.
この車は車軸が頑丈だ。
This car has a sturdy axle.
Loanword from English, common in automotive contexts, especially in technical or tuning discussions.
アクスルを交換する必要がある。
The axle needs to be replaced.
Generic term for shaft or axis. Can mean axle in context, but is broader (e.g., axis of rotation). Often used in compounds.
後輪の軸が曲がった。
The rear wheel axle is bent.
A shaft that supports rotating parts in non-vehicle machinery, such as gears or pulleys.
The standard term for a shaft or axle in mechanical engineering. Used for any rotating shaft.
この機械の軸は定期的に注油が必要です。
The axle of this machine needs regular lubrication.
歯車が軸に固定されている。
The gear is fixed to the axle.
Loanword for shaft, often used interchangeably with 軸 in technical contexts, especially for drive shafts.
The axle of a bicycle wheel, often a thin rod with bearings.
Specifically the axle inside the hub of a bicycle wheel. ハブ (hub) + 軸 (axle).
ハブ軸が曲がると走行が不安定になる。
If the hub axle bends, riding becomes unstable.
Can be used for bicycle axles, though less specific than ハブ軸.
自転車の車軸にグリスを塗った。
I greased the bicycle axle.
Used metaphorically to mean a central point around which something revolves.
Used figuratively as 'axis' or 'pivot', similar to English 'axle' in phrases like 'axle of the world'.
彼はチームの軸となる選手だ。
He is the axle (central figure) of the team.
車軸 is specifically a vehicle axle. 軸 is a general shaft or axis, used in machinery and figuratively. アクスル is a loanword common in car culture but may sound less formal in technical writing.
The English word 'axle' is sometimes confused with 'axis'. In Japanese, 軸 can mean both, but 車軸 is only for physical axles. For a mathematical or political axis, use 軸 or 軸線.
The motor shaft is worn.