Excavator hydraulic milling cutter EK 150

Overview
The EK 150 chain cutter attachment KEMROC for heavy excavators converts hydraulic power directly into continuous cutting by means of a central cutting chain. It is designed for efficient removal of stone and concrete up to 100 MPa uniaxial compressive strength, reducing machine swing movements and material handling. Suited for long-duration trenching, profiling and submerged works on 35–50 t excavators where operating-cost control and cutting accuracy are required.

Key Benefits

• Approx. 40% lower energy consumption versus equivalent rotary drum cutters without a central chain.
• Continuous central cutting chain clears material automatically, avoiding repeated lateral swinging and re-cutting.
• Produces fine-grained spoil suitable for direct reuse as backfill, reducing transport and external fill costs.
• Operates underwater without modification.
• Reduces mechanical stress and wear on excavator swing components (slew ring, swing drive), lowering maintenance costs.

Main Applications

• Heavy trenching and pipeline installation — produces deep, narrow trenches with accurate profiles.
• Mining of medium-hard materials — selective mining where drill-and-blast is restricted.
• Tunnelling and profiling works — precision cutting and controlled shaping in confined excavation zones.
• Underwater and submerged projects — effective for dredging, harbour construction and submerged excavation.

Technical Details / Notes
Continuous-chain cutting principle enables efficient material removal while significantly reducing swinging loads and re-cutting. The unit produces reusable fine-grained material and narrow trench geometry to minimize spoil volume and transport requirements.

Caractéristiques / spécifications techniques

• Model: EK 150
• Brand: KEMROC
• Recommended excavator weight: 35 – 50 t (75,000 – 110,000 lb)
• Rated power: 150 kW (200 hp)
• Drum cutter length (A): 2150 mm (85 in)
• Cutting width (B): 800 | 900 | 1000 mm (32 | 35 | 40 in)
• Cutter drum diameter (C): 850 mm (33 in)
• Recommended rpm: 65 rpm
• Recommended oil flow: 330 l/min (approx.)
• Max. oil flow: 390 l/min
• Max. operating pressure: 400 bar
• Torque at 380 bar: 29,800 Nm
• Cutting force at 380 bar: 70 kN
• Max. rock compressive strength (verified): 100 MPa
• Weight (variants): 3650 | 3700 | 3800 kg (8046 | 8158 | 8378 lb)
• Pick box / type: PH 32 HD Type
• Number of picks in cutter drums: 44 | 48 | 56 pcs
• Number of picks in the cutter chain: 63 pcs
• Standard pick: 17/75/70/30 Q
• Standard hole pattern: LB40
• Compatible rotation unit (KRM): KRM60