Pulley/Drum

A. Functional Significance

In a belt conveyor system, pulleys (drums) serve several critical functions:

• Drive the belt by transmitting power and changing direction (drive pulleys, tail pulleys, snub pulleys)

• Provide tensioning and return of the belt (take-up drums)

• Support loaded and unloaded belt segments, and ensure belt wrap and tracking

• In heavy-impact zones, the pulley shell and lagging must resist material impact and abrasion
  Selecting a high-quality pulley ensures the conveyor belt runs smoothly, reduces downtime, avoids shell deformation, prevents vibration-induced damage, and reduces maintenance cost.

B. Our Product Features

1. Compatibility with Both TD75 and TDII Standards

   • We produce TD75-standard pulleys designed for retrofit and older system compatibility.

   • We also offer TDII-standard pulleys manufactured to modern specifications, suitable for current conveyor systems.

2. Precision Fabrication & Material Quality

   • Seamless steel tubing or welded steel shells, flame-cut and machined to ensure uniform thickness and concentricity.

   • Use of high-grade 45# (or equivalent) round steel shafts and sleeves, with careful machining to eliminate eccentricity and reduce vibration.

   • For high radial load applications (>50 kN for TD75, >80 kN for TDII), we incorporate stress-relief, static balance testing at belt speeds >2.5 m/s.

3. Optimised Sealing & Bearing Assembly

   • High-quality bearings and bearing blocks are employed, with inner bearing enlargement and heat-fit assembly to reduce bearing damage.

   • According to manufacturers referencing Conveyor Equipment Manufacturers Association (CEMA) standards, pulleys should meet defined run-out, shell thickness and load ratings to ensure service life.

4. Adapted for Heavy Duty and Custom Applications

   • We can manufacture drive pulleys, lagged pulleys, wing pulleys, split pillow block drums, cage drums, and other specialised types to match your conveyor design.

   • Shell diameters from Φ114 mm up to Φ2400 mm (or more), lengths up to 3400 mm, and custom face widths — allowing adaptation to wide-belt, high-capacity systems.

5. Energy Efficiency & Longevity

   • By controlling shell thickness, bearing friction and static balance, the conveyor system’s energy consumption and maintenance intervals can be significantly improved.

   • For instance, standard drum pulleys meeting CEMA B105.1 are recommended not to exceed belt speeds of approx. 800 ft/min (~4.1 m/s).

C. Technical Data Table (Reference)

Below is a table summarising technical reference values for conveyor pulleys/drums derived from third-party industry standards. These values are for guidance only and should be adapted to your specific application and belt system.