Closed Track - Conveyor tracks are enclosed type and are formed sections. Chain gets appropriate guide with this arrangement ensuring a chain to remain dustproof. K Series Conveyor - K series conveyor is one-of-its-kind and the only overhead conveyor that is lubrication free. Wheels are of glass filled nylon and self lubricating bearings that ensure no metal-tometal contact while movement of conveyor within the track and chain. This is designed to function in ambient temperature and very popular in the field of material handling in various industries. Power and Free conveyor - Power & Free conveyor consists of twin tracks arranged one above another. Upper track carries a continuously moving chain; while the lower track consists of free moving push-pawl trolleys for engaging and disengaging.