CONVEYOR CENTRALIZER

LINEX®

Keeping conveyor belts dead centre

Applications

• Linex^® conveyor belt centralizing idlers ensure symmetrical belt running and protect the belt edges
• Linex^® conveyor belt centralizing idlers help to prevent expensive production breakdowns
• Linex^® is maintenance free, wear resistant and easy to install
• Linex^® centralizing idlers can be applied to conveyor belts used in lignate and coal mining, power plants, cement works, gravel, stone and sand quarries, foundries, aluminium works, steel works, port loading facilities, chemical plants, water and sewage works, refuse incineration plants, and in the wood and metal processing industry.

Linex centralizing idlers should be fitted as original equipment to all conveyor belts in order to eliminate tracking fault due to:

uneven, worn or wrongly spiced conveyor belts incorrect idler adjustment conical head pulleys distorted steel structure differential structure temperatures asymmetrical or transverse shear-producting load aysmmetrical friction forces caused by pulleys, idlers, scrapers and chute seals

Specification

Rubber cover, With 8 twisted support ribs, friction linings at both ends, giration-mounted centrally on a heavy right-through axle by means of a double spherical roller bearing, 2 bearing boxes with braking angle and 2 longitudinal holes for installation.

Central Spherical Roller Bearing

This spherical roller bearing has a compound tilting angle of 30 by virtue of which the centralizing idler can adjust to the running of the belt. The spherical roller bearing is in the middle of the bearing axle and directly below the centre of gravity of the conveyor belt.

Ideal Running

Centrally or symmetrically running conveyor belt in ideal position. Lateral running tolerance normally ± 6 mm.

Tilting

If the belt runs off to one side up to approximately l0mm,the center of gravity shifts, causing the LINEX^® to react immediately. The centering roller tilts downwards on this side and at the same time the opposite side lifts up and the friction lining touches the upper brake angle

Twisting and Correction

Due to the braking effect and because the centralizing idler rolls back over the braking angle the idler positions itself at an angle to the running direction of the conveyor belt. The running vector of the Linex^® points back towards the middle of the conveyor structure. The friction force which is increased by the chevron- shaped rubber ribs acts towards the center of the structure and guides the belt back.

Ideal Running

After this correction the conveyor belt is running symmetrically again and the roller positions itself straight away horizontally and transversely to the running direction of the conveyor belt.

The LINEX^® is therefore dynamically stable, imparting corrective action only when required.

Important Note,

The corrective effect of the LINEX^® is achieved by the weight of the conveyor

belt and not by its tension. The LINEX^® must not be used as a snub pulley.

Linex^® Design

LINEX^® conveyor belt centralising idlers ha been designed according to the physical laws of gravity and friction and on the basis of many years experience with conveyor belts in practical use.

The LINEX^® conveyor belt centralizing idler ensures true and in-line running of the conveyor belt. It is usually installed just before the tail pulley, virtually beneath the material transfer chute, in place of a support idler. If there is the slightest deviation in the running of the belt, the Linex^® conveyor belt centralizing idler which is mounted at its center by the frictional action of its chevron-shaped rubber This ensures that the load on the belt is centrally located, and reliably prevents any slide spillage or damage to the belt edges and the skirting of the chute.

	1 conveyor belt 2. end brackets 3. bearing axle 4. steel roller body 5. rubber cover with support ribs 6. spherical double roller bearing 7. friction lining 8. braking angle 9. bolted connection 1 0. clamping pin

Linex^® is a registered trademark of Linemann