Top Roller in Excavator
The carrier side of a belt conveyor is the side that is utilized to transport objects. A conveyor's main body is shaped like an oval and is long horizontally, with pulleys (rollers) linked at both ends in this side view. The carrier side is the upper side that is utilized to carry objects. Carrier rollers are rollers that hold the conveyor belt on the carrier side.
We usually utilize build-to-order (BTO) belts instead of ready-made conveyor belts when big conveyance capacity and strength are required for black rubber belt conveyor. Conveyor belts are constructed to have ship bottom form, not flat, for transporting big volumes of items. The bottom of the ship is shaped on the conveying side,
in other words carrier side.
In the first place, there are mainly two kinds of rollers. Rollers holding conveyor belt at transporting side are called carrier roller and roller holding belt at returning side are called return rollers.
Ship bottom shape of conveyor belt is made at transporting side (carrier side in other words) and the ship bottom shape is made with either three rollers or two rollers. These rollers are put into a holder specially made for them and hold conveyor belt together with the holder. It is called “3 point carrier roller” when 3 rollers are used, and “2 point carrier rollers” when 2 rollers are used. “3 point carrier roller” is commonly used in build-to-order conveyors and “2 point carrier roller” is used in ready-made conveyors.
There are standardized dimensions for the “carrier roller” and “return roller” in JIS (Japan Industrial Standard). These dimensions are used for most of build-to-order belt conveyor with ship bottom shape. However, none-JIS but manufacturer’s own specification is often used for rollers in ready-made belt conveyor, and the diameter of rollers are normally smaller than ones that JIS standardizes. It is probably because manufacturer tend to reduce production cost as much as possible.
Our heavy duty top rollers guide tracks over the undercarriage frame and are designed to guaranteed performance for each application and are manufactured with reinforced flanges and heavy duty seals for increased wear life and reliability.
