Rollers / Stations
|Product range of upper self-aligning|
|Product range of lower self-aligning|
|View idler selection|
|Industries - application|
Self-aligning troughing sets
Sometimes the difficult working conditions of the plant results in a lateral movement of the belt. In this case a self-aligning troughing set is used which acts in a way that corrects the belt tracking and maintains it constantly in the central position. The self-aligning troughing set is designed as a series of rollers arranged in a trough positioned onto the supporting transom which itself is fixed to a slewing ring which permits rotation. The slewing ring (a large ball bearing) permits a rotation limited to 5-8 degrees and is sized in proportion to the vertical loading; a tapered roller bearing assembled to the shaft of the slewing ring, absorbs any side forces or overturning pressures. The installation of the self-aligning troughing sets is advised to be positioned on the upper strand rather than the return section, and used only when the working conditions require.
Self-aligning troughing set for loaded strand of belt
The self-aligning troughing sets are designed and manufactured in a way that allows them to be entirely interchangeable with the normal transom. Normally it is a good standard to install them at an approximate distance of 15 metre from the pulley and at a pitch of about 30 m. It is not advised to use self-aligning troughing sets on very short conveyors. The self-aligning troughing sets are designed in 3 different versions:
Model S, with rigid arm;
Model F, with pivoting arm with brake;
Model R, with centralized pivoting arm with brake, for reversible
Self-aligning troughing sets for return belt
Sometimes even on the return section it is necessary to correct the tracking of the movement of the belt. As with the upper section, the return section self-aligning troughing set excercises a corrective action on the belt. The method of function is similar to that of the upper self-aligning troughing set.
Standard version for single directional conveyor belt with single roller and fixed lever arm with offset guide roller. Guide rollers type PS G7 20M16 60N 100 to be ordered separately.
Special version used on reversible belt, using two rollers and pivoting lever arms with the brake and guide roller located in line. Guide rollers type PS G7 20S18 60N 100 to be ordered separately.