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pulleys
 

Range of Manufacture - Pulleys

SHREYANSH ENTERPRISE Pulleys are manufactured with a zeal for offering only Right Quality product to the customer with a robust built to suit the severity of the site conditions. Vast experience in the field of manufacturing Belt Conveyor components for over Three decades and equipped with an in depth understanding of the site conditions SHREYANSH Pulleys are best chosen for hassle free conveyor operation.

Pulley Parameter Min.Range Max. Range
Shell Diameter 193.7 mm 1600 mm
Shell Length 350 mm 2600 mm
Shell Thickness 6 mm 36 mm
Shaft Diameter 60 mm 420 mm
Shaft Length 500 mm 5000 mm

Extraordinary care is taken to ensure that the most vital part of a belt conveyor system conforms to the exacting standards that is required by the industry. This has earned an irreplaceable faith on our pulleys by a vast majority of our customers.

Types of Pulleys

  • Head Pulley
  • Drive Pulley
  • Take Up Pulley
  • Bend Pulley
  • Tail Pulley
  • Snub Pulley
  • Deflector Pulley
  • Non Magnetic Pulley

Types of Construction ( Shaft to Hub Connection)

  • Parrallel key Type
  • Gib head key Type
  • Weld on Hub Type
  • Taper Locking Type
  • Bearing Mounted Type
  • Grip Spring Type
  • Stub axle Shrink Fit

SPECIAL FEATURES OF SHREYANSH PULLEYS :
Manufactured as per International Standards

  • Each conveyor system is considered unique in all factor and carefully reviewed while the pulleys are designed
  • Eccentricity of Pulleys are normally less then 1 mm, though IS: 8531-1977 permits +0.5 % of the OD of Pulleys
  • Contact area normally around 90% to 95%
  • Above Features ensures least imbalance , least vibration et., and eliminate 'HOP' in the Pulley
  • Strict adherence to above qualities provides higher load carrying capacity .
  • Specific engineering is carried out for pulleys supplied as Original Equipment conforming to National/ International standards. Spares are manufactured as per customer's requirements.
  • Stringent Quality Control and inspection combined with vastly experienced workforce ensure that each pulley is masterpiece conforming to all the requirements of the customers.

MANUFACTURING PROCESS OF SHREYANSH PULLEYS:

PULLEY SHELL :

The Pulley shell rolled out of tested plates with one longitudinal seam welding. The welded shell is stress relived in order to avoid stress concentration.

The Pulley shells are of sufficient thickness to carry the desired load without depending on the intermediate discs on all the pulleys designed by SHREYANSH ENTERPRISE. Intermediate discs can be provided if required by the customers.

PULLEY SHAFT :

Shafts fixed to the hub by keys/taper lock assembly/locking device, etc., and the hubs are fixed to the endplates by welding or by bolting. (For extra heavy duty application aero-diaphragm type hubs of cast steel are incorporated replacing forged hubs and end discs).

  • Each part of the Pulley is treated as separate entity and is carefully manufactured.
  • Compatibility of all components to afford maximum structural strength at the least cost is ensured.
  • OD Surface of the pulley are machined to maintain concentricity less than 1 mm.
  • Stress relieving done whenever require/applicable
  • Static/dynamic balancing done as required.

RUBBER LAGGING:

Selection of Lagging:
The choice of lagging is influenced by the objectives. Extra thickness of rubber is sometimes used for increased life, prevention of dirt build-up on the pulley and for protection of the belt. Grooving may be used to increase the friction pull under wet or dry conditions and for prevention of dirt built-up on the pulley.

Rubber lagging can be furnished on either crown or straight face pulleys. Rubber lagging without fabric backing can be vulcanized directly on the pulley face. Three standard thickness, 6 mm, 10 mm and 12mm are available. Other thicknesses can be supplied on request. The rubber for lagging will have a hardness of 55-60 Shore A. Natural, Neoprene or other compounds can also be used as per customer’s request. Special finishes including machined surface or friction impression are available to suit individual applications.

Quality Assurance:
Raw materials are checked for their chemical and mechanical properties. They are also checked ultrasonically for cracks, flaws, inclusion, etc. Fits & tolerance, dimension, etc., as per the SHREYANSH ENTERPRISE standard for various components are strictly maintained in the manufacturing process. All welding are done on specially designed automatic welding machines operated by certified welders. Total care is being taken to ensure least distortion during welding employing special welding techniques. The correct quality electrodes are used to ensure clean and strong weld with full penetration by MIG/MAG/TIG by qualified and approved welders.

Pulley Concentricity:
Our pulleys are concentric to the shafts. Quality material and workmanship assure extended belt life and greater mechanical dependability within the conveyor.
 
     
 
 
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