Rotary Drum Cutters – Proven concepts made better

In addition to our unique chain cutter with a cutter chain running between cutter drums, now we have rotary drum cutters without the cutter chain in our product range.

The patented EK range of chain cutters are one of our core products and continues to be recommended as an ideal tool for trenching contractors. This concept is being expanded with the addition of the new EKT range of traditional style drum cutters. These lower priced models are supplied as rotary drum cutters without a central cutting chain, but conversion kits are available so that cutter chains can be fitted later.

In addition to standard EK and the convertible EKT range, traditional style rotary drum cutters are now also available from KEMROC. They are designated as the new KR range of drum cutters. Designed to be incredibly robust, these attachments are ideal for use on short arm excavators working in confined spaces, especially in tunnelling and also for the vibration free and silent demolition of re-enforced concrete structures.

The new KRD range of direct drive drum cutters can be described as compact, lightweight but strong. Lighter and shorter, these attach­ments are ideal for use on long-arm excavators for demolition and shaft sinking applications. They can also be used for soil stabilisation and concrete renovation applications. Intentionally oversized bearings have been used to support the cutter drums for a long operating life.

  • Range of cutting widths available
  • Fine grained cut material
  • Excavator friendly and energy saving
  • Low noise and vibration levels
  • Works underwater without needing any modifications
  • Design protected under patents

Compare ranges

EKT Range

KR Range

KRD Range

EKT range KR range KRD range
→ EK range → KR range → KRD range
Recommended excavator weight:
18 – 45 t 		Recommended excavator weight:
1 – 125 t 		Recommended excavator weight:
20 – 40 t
Possibility of conversion to a chain cutter:
Yes 		Possibility of conversion to a chain cutter:
No 		Possibility of conversion to a chain cutter:
No
Applications:

Trenching and pipeline work

Mining of soft to medium hard minerals

Also used for concrete renovation, profiling, underwater excavations and tunnelling

 Applications:

Tunnelling

Demolition

Also used for trenching and pipeline work, renovating concrete, profiling, mining of soft minerals and underwater excavating

 Applications:

Demolition using long arm excavators

Ground stabilisation

Renovating concrete

Also used for trenching and pipeline work, profiling, mining soft minerals, underwater excavations, tunnelling and shaft sinking

EKT range

Rotary drum cutters– can be converted into chain cutters for excavators from 18 to 45 t

Features

  • Can be converted to an EK model
  • Tough, rigid gearbox housing
  • High torque motors for maximum cutting force
  • Drums with cutter tool pattern designed for optimum energy saving efficiency
  • Drums supported on robust bearings
  • Protection for hydraulic hoses

Applications

  • Trenching and pipeline work
  • Mining of soft to medium hard minerals
  • Also used for concrete renovation, profiling, underwater excavations and tunnelling

World First

Converts from a rotary drum cutter to a chain cutter

EKT 100 EKT 110 EKT 140 EKT 150 EKT 160
Recommended excavator weight 18 – 30 t 20 – 30 t 20 – 40 t 30 – 45 t 35 – 45 t
Rated power 100 kW 110 kW 140 kW 150 kW 160 kW
Possibility of conversion to a chain cutter yes yes yes yes yes
Drum cutter length (A) 1,440 mm 1,440 mm 1,510 mm 1,510 mm 1,510 mm
Cutter head width, standard (B) 700 | 800 mm 700 | 800 mm 880 mm 880 mm 880 mm
Durchmesser des Standard­schneid­kopfes (C) 600 mm 600 mm 670 mm 670 mm 670 mm
Maximum torque at 380 bar 18.240 Nm 24.500 Nm 25.400 Nm 30.300 Nm 34.000 Nm
Maximum cutting force at 380 bar 60,800 N 81,667 N 75,821 N 90,448 N 101,493 N
Recommended rotation speed 80 rpm 75 rpm 70 rpm 70 rpm 65 rpm
Recommended oil flow 200 – 270 l/min 230 – 300 l/min 280 – 330 l/min 300 – 350 l/min 320 – 380 l/min
Maximum oil flow at 10 bar 350 l/min 350 l/min 380 l/min 400 l/min 400 l/min
Maximum operating hydraulic pressure 400 bar 400 bar 400 bar 400 bar 400 bar
Weight 1,400 kg 1,400 kg 1,900 kg 1,900 kg 1,900 kg
Number of picks 40 | 44 pcs 40 | 44 pcs 44 pcs 44 pcs 44 pcs
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KR range

Rotary drum cutters with spur gears for excavators from 1 to 125 t

Features

  • Extra heavy-duty, rigid gear box housing
  • Equipped for optional water spray dust suppression system
  • High torque motors for maximum cutting force
  • Cutter tool pattern on drums designed for optimum energy saving efficiency
  • Drums supported on heavy-duty bearings
  • Exceptional wear protection on the gearbox
  • Protected hose management

 

Gear drive

Applications

  • Tunnelling
  • Demolition
  • Also used for trenching and pipeline work, renovating concrete, profiling, mining of soft minerals and underwater excavating
KR 15 KR 18 KR 30 KR 45 KR 65 KR 80 KR 110 KR 120 C KR 120 KR 150 KR 160 KR 200 KR 400
Recommended excavator weight 0.6 – 3 t 2 – 4 t 5 – 8 t 9 – 15 t 12 – 18 t 15 – 25 t 20 – 35 t 20 – 40 t 25 – 45 t 30 – 50 t 35 – 55 t 50 – 70 t 80 – 125 t
Rated power 15 kW 18 kW 30 kW 45 kW 65 kW 80 kW 110 kW 120 kW 120 kW 120 kW 160 kW 200 kW 400 kW
Drum cutter length (A) 610 mm 610 mm 805 mm 965 mm 1,130 mm 1,200 mm 1,420 mm 1,420 mm 1,420 mm 1,420 mm 1,580 mm 1,650 mm 1,970 mm
Cutter head width,
standard (B)		 405 mm
 		 405 mm 500 mm 600 mm 780 mm 800 mm 1,040 mm 880 mm 1,040 mm 1,040 mm 1,050 | 1,240 mm 1,330 mm 1,600 mm
Cutter drum diameter,
standard (C)		 225 mm
 		 225 mm 370 mm 400 mm 575 mm 575 mm 680 mm 680 mm 680 mm 680 mm 680 mm 805 mm 920 mm
Maximum torque at 380 bar 1,000 Nm 2,000 Nm 4,500 Nm 6,300 Nm 11,300 Nm 15,200 Nm 20,200 Nm 25,400 Nm 25,400 Nm 30,300 Nm 36,400 Nm 51,000 Nm 118,500 Nm
Max. cutting force at 380 bar 8,889 N 17,778 N 24,324 N 31,500 N 39,304 N 52,870 N 59,412 N 74,706 N 74,706 N 89,118 N 107,059 N 126,708 N 257,609 N
Recommended rotation speed 100 rpm 100 rpm 100 rpm 90 rpm 85 rpm 80 rpm 75 rpm 75 rpm 75 rpm 70 rpm 65 rpm 55 rpm 50 rpm
Recommended oil flow 15 – 25 l/min 25 – 40 l/min 50 – 80 l/min 90 – 120 l/min 120 – 150 l/min 150 – 190 l/min 240 – 280 l/min 280 – 350 l/min 280 – 350 l/min 300 – 350 l/min 300 – 390 l/min 350 – 450 l/min 700 – 950 l/min
Maximum oil flow at 10 bar 40 l/min 60 l/min 90 l/min 130 l/min 170 l/min 210 l/min 300 l/min 350 l/min 350 l/min 360 l/min 400 l/min 500 l/min 1,000 l/min
Maximum operating hydraulic pressure 400 bar
 		 400 bar 400 bar 400 bar 400 bar 400 bar 400 bar 400 bar 400 bar 400 bar 400 bar 380 bar 380 bar
Weight 100 kg 130 kg 290 kg 450 kg 820 kg 1,000 kg 1,850 kg 1,850 kg 1,850 kg 1,900 kg 2,500 kg 3,500 kg 6,000 kg
Number of picks 40 pcs 40 pcs 44 pcs 44 pcs 44 pcs 44 pcs 56 pcs 44 pcs 56 pcs 56 pcs 56 pcs 64 pcs 68 pcs
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KRD range

Rotary drum cutters with direct drive
for excavators from 20 to 40 t

Features

  • Strong, compact design
  • Direct drive with particularly strong support for the cutter drums
  • High power to weight ratio
  • Protected hose management

Direct drive

Applications

  • Demolition using long arm excavators
  • Ground stabilisation
  • Renovating concrete
  • Also used for trenching and pipeline work, profiling, mining soft minerals, underwater excavations, tunnelling and shaft sinking
KRD 100 KRD 120 KRD 150
Recommended excavator weight 20 – 40 t 25 – 40 t 30 – 40 t
Rated power 110 kW 120 kW 120 kW
Drum cutter length (A) 1,070 mm 1,070 mm 1,070 mm
Cutter head width, standard (B) 1.000 mm 1.000 mm 1.000 mm
Cutter drum diameter, standard (C) 730 mm 730 mm 730 mm
Maximum torque at 380 bar 20,200 Nm 25,400 Nm 30,300 Nm
Maximum cutting force at 380 bar 55,342 N 69,589 N 83,014 N
Recommended rotation speed 75 rpm 75 rpm 75 rpm
Recommended oil flow 240 – 280 l/min 280 – 320 l/min 300 – 350 l/min
Maximum oil flow at 10 bar 350 l/min 350 l/min 350 l/min
Maximum operating hydraulic pressure 400 bar 400 bar 400 bar
Weight 1,500 kg 1,500 kg 1,500 kg
Number of picks 48 pcs 48 pcs 48 pcs
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