If you have a Fluent Conveyors machine, the drive pulley is typically the pulley at the end of the conveyor that material is moving towards. If your belt moves in both directions this will be at the end that pulls the largest loads or the belt runs in the direction the most.
If you have a Fluent Conveyors Package Handling conveyor then the drive pulley can be in the middle of the conveyor or at the end. The drive pulley will have a chain and sprocket on one side of it that is attached to a motor. If it is a vanline conveyor it will have a motorized pulley so the drive pulley will be the largest diameter pulley in the drive in the middle of the conveyor.
If you have a conveyor that is manufactured by someone other than Fluent Conveyors there are several ways to locate the drive pulley. First, the drive pulley must be driven. This means it will be near where the power is routed to the conveyor. Next it will be driven so it will either have a motor/gearbox mounted directly to the pulley or attached to it via chain and sprocket (or timing belt). Other considerations to help narrow this down are as follows; the drive pulley is usually at the end of the conveyor that the material is moving towards, the drive pulley is usually coated in lagging (rubber) to increase friction between it and the belt, the drive pulley is typically the largest pulley in the drive system.
Please contact Fluent Conveyors if you have any further questions.