CONVEYOR PULLEYS

Conveyor Pulleys:-

    A conveyor pulley is configured to revolve about an axis of rotation and includes a cylindrical shell and first and second bushing portions supported within the shell. First and second shaft portions are in torque-transmitting engagement with the first and second bushing portions, respectively. Such first and second shaft portions are restrained from axial movement with respect to the first and second bushing portions, respectively, and the first and second shaft portions are spaced from one another. For repair, the shaft portions and related bearings are independently removable without removing the entire pulley from the conveyor system.

SALIENT FEATURES:

• Stable running, good quality, free maintenance.
• Each Pulley is designed according to its position in conveyor, considering all tension parameters.
• Pulleys are statically balance.
• All components are standardised and compatible, hence less cost.

DESIGN AND CONSTRUCTION :

• Welded steel pulleys are of drum type, with rim, end disc and hubs designed to give maximum rim overhang, prevents accumulation of material.
• Smooth Pulley surfaces provide maximum belt protection.
• Hubs and end disc are accurately machined to assure concentric.
• Pulleys are available with straight or crowned face.
• Pulleys shafts are made from carbon steel/EN-8 and are designed for torque and bending moment.
• Normally shafts are keyed in hub. However, taper lock blushing for ease of maintenance can be provided. Shafts are welded to pulley hub in case of light duty. RUBBER LAGGING
• Drive pulley lagging is usually provided to increase traction between belt and pulley.
• Snub and bend pulleys rubber lagging resists accumulation of material on pulley surface.               
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  Conveyor pulley types:
  
  
  
  

  1. Head Pulley: The pulley at the discharge end of a conveyor belt; may be either an idler or a drive pulley. Usually it has a larger diameter than other pulleys in the system and is often lagged to increase traction and pulley life.

  2. Snub Pulley :Mounted close to the drive pulley on the return side of the belt, the snub pulley's primary job is to increase the angle of wrap around the drive pulley, thereby increasing traction. Its secondary purpose is reducing belt tension, which is important in maximizing conveyor component life. May be lagged for longer wear life.

  3. Take-Up Bend Pulley :The bend pulley is used for changing the direction of the belt running to the gravity take-up. May be lagged for longer wear life.

  4. Take-Up Pulley:: An adjustable idler pulley to accommodate changes in the length of a conveyor belt to maintain proper tension.

  5. Tail Pulley :A pulley at the tail of the belt conveyor opposite the normal discharge end; may be a drive pulley or an idler pulley.

  6. Return Idler: The idler or roller on which the conveyor belt rides after the load which it was carrying has been dumped.