Primary lump crusher KVB

Primary crushing of lumps

The robust KVB series primary lump crushers are suited to the coarse grinding of agglomerates and lumps which are hard and brittle. Should the product still be too coarse after the primary crusher, we recommend using our MKB lump crusher to grind the coarse goods to the desired final grain size. Thanks to its modular construction the two lump crushers can be built on in a downstream and space-saving manner.

Primary lump crusher KVB


Up until the comb bar the coarse product is milled by rotating beaters and thereafter discharged downwards by means of the changeable comb openings.

Areas of use

In principle all brittle, hard or frozen products with an edge length of up to 150 mm (larger lumps on enquiry) can be milled up to a grain size of 10–15 mm.

Standard design

  • Standard sizes: 200 x 200 mm to 1000 x 1000 mm
  • Capacity up to 30m²/h, other capacities on request
  • Extremely stable construction with low dead space
  • Large lateral openings for cleaning and inspection
  • Shaft sealing by radial shaft sealing rings or packing glands
  • Load transmission by means of coupling or directly with shaft-mounted gear motor
  • Various crusher fittings for final grain sizes of 10 to 15 mm

Primary lump crusher: Sizes and technical data

Type Flange inside mm Number of shafts Flexible coupling Weight
KVB 200 200 x 200 1 ja 137
KVB 300 300 x 300 1 ja 200
KVB 400 400 x 400 1 oder 2 ja 300/350
KVB 500 up to 1000 500 x 500
up to1.000 x 1.000
2 ja  


Crusher fittings Primary lump crusher installed
Crusher fitting Primary lump crusher installed



  • Pressure surge protected design
  • Single or dual shaft design
  • Material: stainless steel 1.4301, 1.4571 or steel
  • Crushing tools made of wear resistant steel
  • Surface design: glass bead blasted
  • Travelling mechanism, control unit, inlet and outlet funnel, adapter pieces (round to square)



  • Easy to clean
  • Low maintenance effort
  • Adaptable for different products and grain sizes with changeable crusher fittings