Troughing idler, which is the most common idlers used on belt conveyor, is mounted on the carrying side, used for conveying bulk materials. Generally it consists of 3 rollers in equal length. The two outer rollers are inclined upward and the middle one is horizontal. The inclined degree can be 30°,35°and 45°, some can be up to 60° in suspended type. There are two basic types: standard type and ahead inclined type. The latter can also be present all through the conveyor to prevent the belt from sideslip.

A Troughing Idler is comprised of a central idler roll, which has a fixed width, and two or more wing idlers located on each side of the central idler roll. The wing idlers can be adjusted up or down to change the toughing angle, which affects the depth of the trough created by the conveyor belt as it moves.

The troughing idlers comprise a centre idler roll of a defined width, and 'wing' idlers on either side of the centre roll. Unlike the centre, horizontal roll, the wing idlers are cranked up to an angle known as the troughing angle. This troughing angle ensures that the carrying belt maintains the same cross-sectional area throughout the carrying strand, so that the load-bearing capacity of a particular conveyor belt is the same along the conveyors' full length. In so doing, material loaded to the maximum capacity at the loading point will not fall off of the belt en-route.

Troughing idlers usually deep groove ball Bearing For Conveyor Idler roller.

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Troughing Idler

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