Classroom on demand

Welcome to Classroom on demand, your source for educational materials related to the vertical transportation industry. This site represents the knowledge and expertise of the best engineers and mechanics in the elevator industry, and will help those new to the elevator industry learn about the basic workings of elevator systems, and also will serve as a reference for people with more experience.

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1 Glossary

Drive MachineThe power unit which applies the energy necessary to raise and lowe...
Gear - RingA large gear driven by the worm gear which is attached to the drive s...
Gear - WormA spiral gear connected to and driven by the motor and which drives t...
Machine – GearedGeared Traction machines for elevators of 500 fpm of less in whi...
Sheave – DeflectorA pulley aligned with the drive sheave, which provides a path ...
Sheave – DriveThe grooved wheel of a traction machine over which hoist ropes are...
V-shaped GrooveA groove in the drive sheave which produces a pinching or wedging...

2 Basic Elevator Design

Geared Traction Elevator AC Geared Motor assembly, which rotates the drive syste...

4 The Traction Elevator

Car Sling - GearedSling The sling is the framework which encloses the cab. The r...
Counterweights - GearedThe counterweights consist of individual flat plates of s...
Geared MachineTraction = A traction elevator configuration uses ropes (cables) t...

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