Duff Norton 228R REBUILT AIR JACK, 20 TON

Air Motor Jacks

Duff-Norton air motor jacks are offered in seven models from 20 ton to 100 ton. These precision built, sturdy, dependable machines employ the time-tested basic screw principle with fool-proof, built-in rotary air motor. Can be synchronized for simultaneous operation of two jacks through use of a "Y? connection. Used for raising and lowering freight cars, diesel locomotives and truck trailers.

Design and Manufacturing Features:

Manufactured in compliance with ASME B30.1

Easy to move and spot with long transport handle and collapsible spotting handles

Up or down hand throttle control well guarded. Position of lever clearly indicates direction up or down

Sturdy shell with large diameter base for stability under top-heavy loads

10” diameter, 2 ½” face solid rubber-tire roller bearing wheels assure easy portability

Transport handle folds down and out of the way when jack is in use

Automatic shut off stops the motor when the lifting standard reaches the safe limit of its raised or lowered position

Screen in air hose connection easily removed for cleaning

Easy to lubricate through two convenient plugs in jack and one in air motor

Built in muffler

Ball bearing thrust and radial mountings throughout for easy action and long life

Safety Features:

A brake is provided on 50 and 100 ton jacks to prevent accidental lowering

The load is lowered entirely, as well as raised, by air motor so that the lowering speed is always under constant control, preventing slipping or sudden dropping of the load

The design of the jack prevents lowering or creeping under load in case of air failure due to disconnection or injury to the hose

Jacks are internally keyed to prevent standard from turning

Broad, sturdy base for stability

Serrated forged steel top