Hardware (mechanical)

An actuator is a component of a machine that is responsible for moving or controlling a mechanism or system.

A flywheel is a rotating mechanical device that is used to store rotational energy.

A sail is means for redirecting the power of the wind to propel a craft on water, ice or land.

A rivet is a permanent mechanical fastener.

The drivetrain of a motor vehicle is the group of components that deliver power to the driving wheels.

A cam is a rotating or sliding piece in a mechanical linkage used especially in transforming rotary motion into linear motion or vice versa.

A crankshaft—related to crank—is a mechanical part able to perform a conversion between reciprocating motion and rotational motion.

A gear or cogwheel is a rotating machine part having cut teeth, or cogs, which mesh with another toothed part to transmit torque.

Machine element refers to an elementary component of a machine.

A fan is a machine used to create flow within a fluid, typically a gas such as air.

A machine is a tool containing one or more parts that uses energy to perform an intended action.

A propeller is a type of fan that transmits power by converting rotational motion into thrust.

Engineering tolerance is the permissible limit or limits of variation in: 1.

A gasket is a mechanical seal which fills the space between two or more mating surfaces, generally to prevent leakage from or into the joined objects while under compression.

A linear actuator is an actuator that creates motion in a straight line, in contrast to the circular motion of a conventional electric motor.

An axle is a central shaft for a rotating wheel or gear.

A wheel is a circular component that is intended to rotate on an axle bearing.

A pipe is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances which can flow — liquids and gases (fluids), slurries, powders and masses of small solids.

A bayonet mount (mainly as a method of mechanical attachment, as for fitting a lens to a camera) or bayonet connector (for electrical use) is a fastening mechanism consisting of a cylindrical male side with one or more radial pins, and a female receptor with matching L-shaped slot(s) and with spring(s) to keep the two parts locked together.

Propulsion is a means of creating force leading to movement.

Security seals are mechanisms used to seal shipping containers in a way that provides tamper evidence and some level of security.

Bearing balls are special highly spherical and smooth balls, most commonly used in ball bearings, but also used as components in things like freewheel mechanisms.