Grinding attachments for wood and removal of tree stumps

You have disturbing, unsightly tree stumps on your property We can remove them efficiently, cleanly and quickly. The newly developed KST range of tree stump grinders are designed specifically for the quick and effective removal of tree stumps.

Models, available for use on excava­tors from 2 to 25 ton operating weight as well as backhoe and skid steer loaders, can operate with rotation speeds up to 2,000 rpm.

Due to the design of the cutter disc, hard wood can be ground very effectively as well as soft woods. All of our cutter discs are fitted with tungsten carbide tipped teeth.

As an optional extra, KST grinders can be supplied with one of the rotation modules from the KRM range.

  • Expensive excavation of tree stumps, earth works and recycling are no longer necessary
  • Wood shavings mix with soil and earth to fill the hole left by the tree stump
  • Roots left in the ground will rot away over time

Compare models

KST 20 KST 30 KST 40 KST 50
→ Technical data → Technical data → Technical data → Technical data
Recommended excavator weight:
2 – 4 t
Recommended excavator weight:
5 – 10 t
Recommended excavator weight:
10 – 16 t
Recommended excavator weight:
15 – 25 t
Rated power:
55 kW
Rated power:
80 kW
Rated power:
130 kW
Rated power:
135 kW
Recommended oil flow at 150 bar:
25 l/min
Recommended oil flow at 150 bar:
60 l/min
Recommended oil flow at 150 bar:
120 l/min
Recommended oil flow at 150 bar:
140 l/min

KST 20

  • Recommended excavator weight
    2–4 t
  • Rated power
    55 kW
  • Maximum torque at 350 bar
    140 Nm
  • Recommended rotation speed
    1,000 rpm
  • Maximum rotation speed
    1,200 rpm
  • Recommended oil flow at 150 bar
    25 l/min
  • Maximum oil flow
    30 l/min
  • Maximum operating hydraulic pressure
    350 bar
  • Weight of the base drive unit
    70 kg
  • Cutter disc
  • Weight with protection cover
    70 kg
  • Number of cuting tools
    20 Pcs
  • Standard cuting tool
    Wood cutting tool set

KST 30

  • Recommended excavator weight
    5–10 t
  • Rated power
    80 kW
  • Maximum torque at 350 bar
    311 Nm
  • Recommended rotation speed
    1,100 rpm
  • Maximum rotation speed
    2,000 rpm
  • Recommended oil flow at 150 bar
    60 l/min
  • Maximum oil flow
    140 l/min
  • Maximum operating hydraulic pressure
    350 bar
  • Weight of the base drive unit
    210 kg
  • Cutter disc
  • Weight with protection cover
    120 kg
  • Number of cuting tools
    30 Pcs
  • Standard cuting tool
    Wood cutting tool set

KST 40

  • Recommended excavator weight
    10–16 t
  • Rated power
    130 kW
  • Maximum torque at 350 bar
    600 Nm
  • Recommended rotation speed
    1,100 rpm
  • Maximum rotation speed
    2,000 rpm
  • Recommended oil flow at 150 bar
    120 l/min
  • Maximum oil flow
    270 l/min
  • Maximum operating hydraulic pressure
    350 bar
  • Weight of the base drive unit
    350 kg
  • Cutter disc
  • Weight with protection cover
    175 kg
  • Number of cuting tools
    36 Pcs
  • Standard cuting tool
    Wood cutting tool set

KST 50

  • Recommended excavator weight
    15–25 t
  • Rated power
    135 kW
  • Maximum torque at 350 bar
    721 Nm
  • Recommended rotation speed
    1,100 rpm
  • Maximum rotation speed
    2,000 rpm
  • Recommended oil flow at 150 bar
    140 l/min
  • Maximum oil flow
    330 l/min
  • Maximum operating hydraulic pressure
    350 bar
  • Weight of the base drive unit
    490 kg
  • Cutter disc
  • Weight with protection cover
    225 kg
  • Number of cuting tools
    42 Pcs
  • Standard cuting tool
    Wood cutting tool set