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LINEX®

CONVEYOR BELT CENTRALISER

Linex® conveyor belt centralising idlers ensure symmetrical belt running and protect the belt edges. They help to prevent expensive production breakdowns, and are maintenance free, wear resistant and easy to install.

Linex® centralising idlers can be applied to conveyor belts used in lignite and coal mining, power plants, cement works, gravel, stone and sand quarries, foundries, aluminium works, steel works, port loading facilities, chemical plant, water and sewage works, refuse incineration plants, and in the wood and metal industry.

Applications

  • ensure symmetrical belt running and protect the belt edges
  • help to prevent expensive production breakdowns
  • maintenance free, wear resistant and easy to install
  • 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® should be fitted as original equipment to all conveyor belts in order to eliminate tracking fault due to:

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

Specification

Rubber cover with 8 twisted support ribs, friction linings at both ends, gyration-mounted centrally on a heavy right-through axle by means of a double spherical roller bearing, two bearing boxes with breaking angle and two longitudinal holes for installation.
TYPE DURO Belt Width A A mm B mm C mm D mm E mm F** mm Weight Kg
LID 50 500 740* 650 810 880 840 190.5 47
LID 65 650 890* 800 960 1030 990 190.5 47
LID 80 800 1090* 1000 1160 1230 1190 190.5 53
LID 100 1000 1280* 1190 1350 1420 1380 190.5 58
LID 120 1200 1530* 1440 1600 1670 1630 190.5 63
LID 140 1400 1720* 1630 1790 1860 1820 190.5 70
LID 160 1600 1950* 1860 2020 2090 2050 190.5 75

All specifications are correct at time of of going to press and are subject to change without prior notice.
* Can be fitted for standard supporting frames. Other dimensions on request.
** Neopren-standard diameter 59mm
** Polyurethane food qualified diameter 69mm

Central Spherical Roller Bearing

The spherical roller bearing has a compound tilting angle of +/- 3° by virtue of which the centralising 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 +/- 6mm.

Tilting

If the belt runs off to one side up to approximately 10mm, the centre of gravity shifts, causing the Linex to react immediately. The centring roller tilts down 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 centralising 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 centre of the structure and guides the shelf back.

Ideal Running

After this correction the conveyor belt is running symmetrically again, and the roller immediately positions itself 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® conveyor belt centralising idlers have 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.

Linex® 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® centralising idler will re-align the belt to it’s central position. 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
10. Clamping pin

Gallery

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