Star screening machines / disc screening machines

Star creening machine Type: AST / disc screening machine Type: ASC

The S&F star and disc screening machines are suitable for screening damp material, such as compost, bark etc., as well as for rough pre-screening of other bulk materials.

S&F Star Screen


S&F star separators and disc separators are used in saw mills, waste wood plants, recycling plants, compost centres, waste management industry, environmental engineering, etc.  

Materials to be screened

S&F star screening machines screen compost, green waste, bark, shredded wood, green wood, waste wood, sand and soil, etc.
S&F disc screening machines screen waste wood, bark, compost, firewood, scrap wood, construction debris, glass, etc. They are ideal for separating out over-lengths.

Technical description

The S&F star and disc screening machines consist of numerous shafts aligned parallel and at the same distance to each other which are fitted with side-by-side rotating star or disc type wheels.  The screening stars or discs are arranged so that square or rectangular openings are produced. The shaft spacing determines the size of the respective openings.

The star and disk screening machines are fed by a dosing system, conveyor belt or the like. The smaller fraction falls through between the stars, while the larger fraction is moved along further on the screening surface by the rotation of the shafts. The larger fraction is moved along the screening surface by the rotating shafts until it is thrown off at the end of the screen.

Star and disc screening machines can be used horizontally or at a slight incline. They are characterized by vibration-free operation and, due to the fact that they do not clog easily, they are suitable for grading damp and difficult to screen bulk solids as well as for screening out over-lengths.

Advantages of S&F star screening machines

  • Highest throughput rate for damp materials and low space requirements
  • Highly reliable
  • Low maintenance and repair
  • Sturdy construction
  • Low maintenance costs
  • Self-cleaning system thanks to plastic screening stars
  • Particle size can be changed by changing the speed of the screen deck
  • High degree of selectivity even when damp material is loaded
  • Service-friendly design
  • Any fraction can be selected
  • Special controls for individual adjustment of the screen deck speed
  • Screening results can be set by the stars or discs and speed control 

Technical data

TypeScreening width [mm]Capacity[m3/h]Drive Power [kW]
AST-60060030- 60According requirement or length of screen

*Performance details dependent on:, Screened material, Mesh aperture, Number of fractions, Moisture in material, Bulk weight, etc.

Star screens:

  • Particle size: 0 - 120 mm
  • Screen lengths of up to 6 m
  • Throughput rate of up to 400 m³/h

Disc screens:

  • Particle size: 0 - 300 mm
  • Screen lengths of up to 6 m
  • Throughput rate of up to 400 m³/h