Excavator hydraulic milling cutter EK 140

Product overview
The EK 140 chain cutter for excavators is designed for jobs where cutting control, energy efficiency and machine wear are as important as cutting force. Positioned in the EK Chain Cutters range, the EK 140 uses a central cutting chain between two drums to continuously remove material from the cutting zone, preventing the formation of a central pillar of uncut material common to standard drum cutters.

Main benefits

• Up to 40% lower energy consumption versus conventional rotary drum cutters.
• High cutting force: 58 kN (at 400 bar) for continuous material removal.
• Available cutting widths: 800 mm, 900 mm or 1,000 mm to match trench/profile requirements.
• Produces narrow trenches with fine-grained material and clean profiles, reducing overbreak and backfilling work.
• Continuous cutting reduces vibration peaks and shock loads, enabling work close to existing structures and finished surfaces.
• Can operate fully submerged without technical modification, suitable for underwater excavation.

Key features & technical advantages

• Central cutting chain continuously removes material between drums, eliminating inefficient swinging and re-cutting.
• Hydraulically optimised for 30–45 t excavators with recommended and maximum oil flow values to support long duty cycles.
• Reduced wear on excavator swing components (swing gear, slew ring, swing drive) due to minimized side-to-side swinging.
• Controlled, low-vibration cutting reduces the need for blasting or heavy breakers in many applications.
• Precision trenching capability to create accurate trench profiles and lower material handling and reinstatement costs.

Applications

• Rock and high-resistance ground excavation where energy-efficient cutting maintains productivity over long shifts.
• Controlled concrete and structural removal where limiting secondary cracking and vibration is critical.
• Precision trenching in demanding ground conditions to achieve optimal trench profiles with minimal overbreak.
• Underwater and submerged excavation tasks, operable without modification.

Technical specifications

• Recommended excavator weight: 30 – 45 t (65,000 – 100,000 lb)
• Rated power: 140 kW (190 hp)
• Drum cutter length (A): 2150 mm (85 in)
• Cutting width (B): 800 | 900 | 1000 mm (32 | 36 | 40 in)
• Cutter drum diameter (C): 850 mm (33 in)
• Recommended rpm: 70 rpm
• Recommended oil flow: 275 l/min (73 gal/min)
• Max. oil flow: 320 l/min (85 gal/min)
• Max. operating pressure: 400 bar (5800 psi)
• Torque at 380 bar: 24,500 Nm (approx.)
• Cutting force at 380 bar: 58 kN (≈12,950 lbf)
• Max. rock compressive strength: 100 MPa (≈14,500 psi)
• Weight (by cutting width): 3650 | 3700 | 3800 kg
• Pick box / Type: PH 32 HD Type
• Number of picks in cutter drums: 44 | 48 | 56 pcs (depending on configuration)
• 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