Hammer Mills 670

The Ottevanger Hammer Mills 670 series are very efficient mills and the result of our innovation and many years of experience. Depending on the number of revolutions and selected sieve size the machine is able to reduce the particle size down to approx. 200 micron.  The Hammer Mill 670 machines can rotate in two directions and are equipped with electro-pneumatically operated valves and cast iron rupture discs.

The machine features a solid all-welded construction and has a number of benefits, which are mentioned below.

A closed vibratory feeder with a permanent magnet ensures the supply for the Hammer Mill. The feeder can be provided with a roll-feeder with a stone cather and a self-cleaning magnet. One of the options is to add an automatic frequency-controlled vibratory feeder to the machine. The feeder ensures a uniform distribution of granulate over the full width of the grinding chamber. The milled material leaves the grinding chamber immediately in order to keep the efficiency of the milling process as high as possible.


  • Designed for dual direction of rotation
  • Electro-pneumatic operated product guide valve
  • Cast iron breaker plates
  • Large inspection doors
  • Built onheavybase frame with shock absorbers
  • Precisely balanced rotor guarantees a long service life
  • Fully enclosed roll feeder with automatic self-cleaning magnet – and stone trap
  • Screen changing without stopping the mill
  • Automatic feeder

Range of Hammer Mills 670

Type HM670-750 HM670-1150
Motor(KW) 110-160 160-250
Screen Surface(m²) 2 x 0,55 2 x 0,8
Chamber Diameter(mm) 670 670
  Length(mm) 750 1150
Capacity Maize 15-25 20-35
  Barley 9-13 12-18
Transport Weight(kg) 2300 2900

Doorsnede hm