According to the special requirements, we offer planning, manufacturing and assembly of belt pulleys for the conveying equipment for loose goods.

Equipment developed by SIGMA is used worldwide in many diverse industrial sectors such as transshipment services, transport services, food industries, power plants and opencast mining.


Belt pulley manufacture is focusing on the following design versions:

  • Belt pulleys with locking ring connection and T-floor design
  • Belt pulleys with locking ring connection and I-floor design
  • Belt pulleys with internal bearings

All belt pulleys are designed based on the actual loads to which they will be exposed. The design of belt pulleys for use in high-stress applications is verified by FEM calculation.

Pulley bearings

  • Spherical roller bearings on adapter sleeve
  • Wide variety of casings with various sealing systems
    • Pedestal bearings, unsplit and split
    • Slide or insert bearings
    • Flanged bearings
    • Cage bearings
    • Double lip seals, Labyrinth seals, Taconite seals

Pulley linings

  • Hot and cold vulcanized pulley linings
  • Rubber linings in various thicknesses and hardnesses
  • Various profiles including:
    • Diamond
    • Fish bone
    • Waffle
    • Smooth
    • Ceramic linings with rubber as substrate
    • Ceramics directly applied
    • ATEX versions possible

Particular attention is attached to the interfaces for monitoring and maintenance:

  • Speed transmitters
  • Connectors for temperature monitoring
  • Connectors for vibration monitoring
  • Connectors for lubrication