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

Double-wrappedRoping arrangement on gearless traction elevators, where the hoist...
Drive MachineThe power unit which applies the energy necessary to raise and lowe...
Machine – GearlessGearless Traction machines for elevator of 500 fpm or higher i...
Sheave – DriveThe grooved wheel of a traction machine over which hoist ropes are...
Sheave – SecondaryA pulley on a gearless machine which serves two purposes - 1. ...
U-shaped GrooveA groove in the drive sheave which produces no pinching or wedgin...

2 Basic Elevator Design

Gearless Traction Elevator Our AC Gearless Line of elevators designed for High S...

4 The Traction Elevator

Car Sling - GearlessIsolated PlatformThe platform serves as the base on which yo...
Counterweights - Gearless The counterweights consist of individual flat plates o...
Geared Traction Drive SheaveThe geared traction drive sheave has "V" shaped groo...

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