Lineshaft roller conveyors are, as their title suggests, powered via a shaft beneath the rollers.

A single shaft runs below the rollers running the length of the conveyor. On the shaft there are a series of spools; one spool for each roller, unless "double-driving" is necessary over structural support. A rubber o-ring runs from a spool on the powered shaft to each roller. When the shaft is powered the rubber o-ring acts as a chain between the spool and the roller making the roller rotate. The rotating of the rollers pushes the product along the conveyor.

Advantages of this conveyor are quiet operation and low maintenance. They can be manufactured for almost all applications, at low expense.

Here we can see a Tranzband system with automated rollover stop and chain transfer assembly. (See below for more information).

 

Features:

Safety Spacers between drive spools No pinch points or chains Well guarded universals available

Reliability Simplicity is the key - very little to go wrong, will often keep operating after severe accidental damage Replacement parts are readily available

Versatility Tranzband will carry a large range of box sizes Modular design allows the system to be modified or added to easily Change working height easily on the stands

Accumulation No need to power on and off Accumulation pressure is adjustable

Clean Side frames are continuous, uncluttered and easy cleaning No dirt traps or hard to clean spots

Tapered Rollers Accurate powered transfer around bends

Additional Options: 

Oscillator
	The oscillator is an alternating rack within the tranzband system. This allows a second line of traffic to be merged into the existing one. The oscillator is powered by a pneumatic cylinder and is usually used in conjunction with a police man.
Policeman
	The police man alternates the flow of traffic by only allowing one lane to progress at a time. Other controls may be run off the police man, such as switching the oscillator to the correct orientation to accept the incoming traffic.