Controller
An electrical panel which performs many computer functions by which it operates an elevator.

Machine Room
The room in which the power machinery for operation of the elevator is located.

Sheave
A sheave is a grooved wheel often used for holding a belt, wire rope, or rope and incorporated into a pulley. The sheave spins on an axle or bearing inside the frame of the pulley. This allows the wire or rope to move freely, minimizing friction and wear on the cable.

Hoist Ropes
Hoist ropes are connected to an elevator car (cab) at one end and to a counterweight at the other end. Ropes are laid over grooves on the drive sheave, which is driven by a motor via a brake with or without a gearbox. The frictional force between the grooves and ropes drives the ropes up and down.

Car Door Operator
The elevator door operator is the assembly that ensures the elevator door opening and elevator door closing mechanism work. The electrical part includes the elevator door motor, motor speed control device, position switch or encoder; the mechanical part includes the door rail, hanging board, door leaf linkage, etc. The door protection system has a light curtain and safety touch panel.

Car Doors
Elevator doors are set of doors that prevent passenger from falling onto the hoistway.

Operation Panel & Phone
A device for operating elevators, installed in a hall or inside a car, and onto which Car Buttons are mounted.

Traveling Cables
A cable that is used for power transmission to the elevator car, and communication between the controller, and the elevator car.

Hoistway Entrance
The exterior door that leads from the hallway to the elevator car.

Counterweight Buffer
a device designed to stop a descending counterweight beyond its normal limit and to soften the force with which the elevator runs into the pit during an emergency.

Car Buffer
A buffer is a device designed to stop a descending car beyond its normal limit and to soften the force with which the elevator runs into the pit during an emergency.

Pit
That portion of an elevator shaft or hoistway extending below the level of the bottom landing saddle to provide for bottom overtravel and clearance, and for elevator parts that require space below the bottom limit of car travel.

Geared Machine
the geared traction elevator machine utilizes a reduction gear with a high-speed motor to drive the traction sheave.

Governor
An elevator device which acts as a stopping mechanism in case the elevator runs beyond its rated speed.

Rope Gripper
A machine that is hydraulically reset and mechanically activated to grip the elevator suspension ropes to protect an elevator in case there is an electrical or mechanical failure.

Final Limit Switch
Used to detect the presence of a moving object when the object passes or when it reaches its final destination.

Roller Guides
Roller guides travel along hoistway rails to keep your elevator car properly aligned as it moves up and down in the hoistway. They help smooth your elevator’s ride by absorbing vibration, much the way the shock absorbers in an automobile’s suspension help it glide over bumps in the road.

Counterweight
A counterweight carried by an elevator cable to balance the weight of an elevator cab; the counterweight travels upward when the cab travels downward, and vice versa; usually composed of steel plates stacked within a frame.

Governor Tension Sheave
Part of the system that acts as a stopping mechanism in case the elevator runs beyond its rated speed.

Directional Limit Switch
Limit switches detect and are controlled by the motion or presence of an object. Switches are electrical devices used to break electrical circuits.