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For extruders

SUPREX twin screw extruder gear unit

The SUPREX extruder gear box is the most sophisticated solution for a variable-speed drive of large, twin screw extruders for polyolefin compounding.

Introduced in 1999, the SUPREX gear box’s integrated planetary superimposition gear stage enables variable-speed in an energy-efficient, cost-effective, and obsolescence-proof way. It combines a large, fixed-speed main motor (DOL) with a smaller, variable-speed drive (VDS) with frequency converter.
The gearbox is available with an output torque of up to 500 kNm per output shaft in both sleeve and roller bearing version with a flexible center distance and distinguishes itself due to a very high level of reliability and durability.

The sleeve bearing design in particular allows for maintenance intervals of > 10 years, thereby achieving the lowest maintenance costs and preventing expensive system downtime.

Features

SUPREX twin screw extruder gear unit

  1. Variable speed for different material grades with high product quality in the compounding of polyolefines (polyethylene and polypropylene)
  2. 2.5 percent better overall system efficiency compared to large VSD + fixed-speed gear boxes – most economical solution
  3. Fewer obsolescence issues due to off-the-shelf frequency converter for small VFD
  4. Maintenance intervals > 10 years possible with the slide bearing option
Technical Data

SUPREX twin screw extruder gear unit

Sense of rotation output shafts:Co-rotating
Center distances:From 205 mm to 349 mm
Output torques:From 100 kNm to 500 kNm per output
Gear ratios:From 5 to 14
Input speed:1,200 / 1,500 or 1,800 rpm.
Gearing design according to DIN/AGMA:Sleeve bearing or roller bearing version available