Wide Chamber Mill – Series W

P13 Pionier – wet wood mill,  Series W

Wide Chamber Mills have been designed for the disintegration of moist and wet wood. The mills comminute soft and hard wood of a feed size of Standard G50 wood chip and a water content of 60% in one step to a fineness required for pressing pellets.

The W series comprises of four sizes and a range between 75 and 250 kW for the drive


Technical Details
  • Symmetric housing, allows operation in both directions
  • Swiveling inlet flap with proximity switches to change sense of rotation
  • Large size enforced impact plates, exchangeable
  • Foreign body trap inside the grinding chamber, easy to clean
  • Two-segment sieve with chain tensioning system, exchange single elements when worn
  • Change screens while machine has stopped
  • Automatic door locking system with stand still monitor
Mill size
W 400 C W 700 C W 1000 C W 1200 C
Diameter of grinding chamber (mm) 680
Width of screen (mm) 400 760 1000 1250
Grinding chamber (m²) 0,60 1,10 1,50 1,80
Drive 3000 rpm, 50 Hz (speed between 1200 and 3600 rpm (20-60 Hz) allowed)
Maximum motor size(kW) bis 75 bis 132 bis 200 bis 250
Typical motor size (kW) 75 110 160 200
Dimensions and Weights
Length* (approx. mm) 2250 2710 2950 3150
Width (approx. mm) 1665 1665 1665 1665
Height (approx. mm) 1150 1150 1150 1150
Weight without motor (kg) 1550 1700 1950 2250

* depends on motor size

Standard Supply and Options

Standard scope of Supply

  • Two part base frame
  • Flexible coupling with protection hood
  • Vibration dampers
  • Sealing for mill outlet
  • 1 set of beaters, fitted in the mill
  • 2 sets of screens, 1 set fitted in the mill
  • 1 set of special tools
  • Multi-layer coating, choice of color RAL 7032 (pebble grey) or RAL 1015 (ivory)


  • Drive motor B3 with integrated PTC sensors
  • Bearing temperature control system according ATEX regulations
  • Mill temperature control system according ATEX regulations
  • Underpressure controller for grinding chamber (vacuum controller)
  • Mill body and rotor made of stainless steel 1.4301/AISI304
  • Explosion protection: Explosion pressure shock resistant and flame penetration proof design to meet ATEX regulations