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The Straight & Curved Stairlift Buyers Guide®

 

A Free Information Databank to Learn All About the Stairlift, Global Leading Manufacturers, Reviews, How to Choose a Stairlift and How to Buy a Stairlift!

Curved Rail Stairlifts

Curved Rail Stairlifts

 

Rack and Pinion Drive

Stairlift Rack and Pinion Drive System

Rack and Pinion

 

The majority of today’s stair lift manufacturers, world-wide build a modern state-of-the-art Rack and Pinion Drive System with battery power, which has proven itself to be quiet, reliable and with low maintenance. A drive system which will safely operate a stairlift even during a power outage.

 

A rack and pinion stairlift is a motor-powered lifting device. The rack and pinion gear system is used to convert the rotation into linear motion moving the stairlift up and down the stairs. A passenger is moved on a carriage attached to an inclined rail track.

 

Advanced stairlift technology and innovation has made strides in rail track design with rigid Aluminum Extruded Rail Track (with a Steel Rack attached) fitted between different floor levels in a home or commercial business.

Rack and Pinion Drive

Rack and Pinion System
Rack and Pinion System

Over the years there were several diverse ways and approaches to transfer and drive the stairlift carriage up and down the rail track, from noisy and oily chain driven mechanisms to wire rope or cable wrapping around winch drums. These outdated mechanisms are still available today. All of these are now obsolete apart from the modern Rack & Pinion Drive System which produces a very smooth and safe stairlift ride.

 
For overall passenger safety security and comfort control, some stairlift rail tracks are designed for a rack and pinion drive system, an extruded aluminum rail track system and a multiple glide roller system. For stable and an absolutely secure movement at all times up and down, a stairlift may utilize a chassis system of extra multiple glide rollers, giving a surface contact area for greater holding capability and a gliding capability to furnish a smoother ride.

 

A double tube extruded aluminum rail profile can give a superb feeling of safety and stability. A hardened steel rack is bolted to an aluminum cast track. The stairlift motor which is coupled to the stairlift gearbox drives the round pinion gear along the rack/track. The pinion gear is the rotating machine part having cut teeth, or cogs, which meshes with the toothed part on the rail in order to transmit torque.

 

Added security and safety comes with an Overspeed Governor (OSG) built into the chassis of a stairlift. Should the OSG mechanism sense any over-speed, the centrifugal force causes the over speed governor cams to fly out and in turn release the safety gear jaw which rapidly clamps to the stairlift rail and disengages the motor drive power bringing the stairlift to an immediate safe stop.