Excavator hydraulic milling cutter KRC 140

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Overview
KEMROC Patented Bullhead Cutters (KRC range) are dual-angled drum cutter attachments engineered for precise narrow trenching with full-face coverage. The design eliminates sideways movement and center gaps, enabling consistent, narrow trench widths in a single pass. The KRC range features a powerful double-motor hydraulic system, protected hose management and is suitable for demanding applications including pipeline trenching, soil stabilisation and underwater operations to 30 meters without modification.

Key benefits

• Exceptional narrow trench width due to special inclined gearbox design
• Full-face coverage — precise cutting without lateral movement
• Protected hose management for reliability in the field
• Powerful hydraulics via double motor design for high cutting force
• Suitable for soil stabilisation and a wide range of ground conditions
• Operational underwater up to 30 meters without modifications
• Low maintenance design with fewer moving parts to minimise downtime

Summary description
The KRC Bullhead Cutters deliver full-face trench cutting by using two angled cutter drums and an inclined dual-drum gearbox. This ensures narrow, consistent trench profiles and avoids over-excavation. The double hydraulic motor layout provides high torque and cutting force, making the KRC series suitable for rock, concrete and hard ground applications as well as subsea and wetland projects. Their design reduces vibration and protects the carrier machine while improving productivity and reducing finishing work.

Model comparison (table)
Model | Average drum diameter (C) | Compatible rotation unit (KRM) | Cutter length (A) | Cutting force at 380 bar | Cutting width (B) | Max. oil flow | Max. operating pressure | Max. rock compressive strength | Number of picks | Pick box | Rated power | Recommended excavator weight | Recommended oil flow | Recommended rpm | Standard hole pattern | Standard pick | Torque at 380 bar | Weight
KRC 40 | 415 mm | KRM35 | 980 mm | 23 kN | 530 mm | 110 l/min | 400 bar | 30 MPa | 60 Pcs | PH 20 Type | 40 kW | 7 – 11 t | 80 l/min | 110 rpm | LB10 | 16/46/38/20 | 4800 Nm | 475 kg
KRC 60 | 545 mm | KRM40 | 1200 mm | 33 kN | 600 mm | 155 l/min | 400 bar | 50 MPa | 56 Pcs | PH 22 HD Type | 60 kW | 12 – 17 t | 115 l/min | 85 rpm | LB20 | 15/46/38/22 C | 9100 Nm | 850 kg
KRC 100 | 650 mm | KRM50 | 1390 mm | 48 kN | 810 mm | 230 l/min | 400 bar | 80 MPa | 52 Pcs | PH 32 HD Type | 100 kW | 18 – 30 t | 205 l/min | 70 rpm | LB30 | 17/75/70/30 Q | 15700 Nm | 1400 kg
KRC 110 | 650 mm | KRM50 | 1390 mm | 60 kN | 810 mm | 285 l/min | 400 bar | 80 MPa | 52 Pcs | PH 32 HD Type | 110 kW | 20 – 32 t | 255 l/min | 70 rpm | LB30 | 17/75/70/30 Q | 19400 Nm | 1400 kg
KRC 140 | 700 mm | KRM60 | 1520 mm | 69 kN | 880 mm | 300 l/min | 400 bar | 100 MPa | 52 Pcs | PH 32 HD Type | 140 kW | 25 – 40 t | 265 l/min | 75 rpm | LB40 | 17/75/70/30 Q | 24200 Nm | 2000 kg
KRC 150 | 700 mm | KRM60 | 1520 mm | 86 kN | 880 mm | 360 l/min | 400 bar | 100 MPa | 52 Pcs | PH 32 HD Type | 150 kW | 35 – 50 t | 330 l/min | 75 rpm | LB40 | 19/75/70/30 Q | 30200 Nm | 2000 kg
KRC 160 | 700 mm | KRM70 | 1520 mm | 93 kN | 880 mm | 360 l/min | 400 bar | 120 MPa | 52 Pcs | PH 32 HD Type | 160 kW | 35 – 55 t | 360 l/min | 75 rpm | LB40 | 19/75/70/30 Q | 32700 Nm | 2000 kg
KRC 220 | 925 mm | KRM80 | 1860 mm | 131 kN | 1200 mm | 610 l/min | 400 bar | 140 MPa | 68 Pcs | PH 38 HD Type | 220 kW | 50 – 70 t | 520 l/min | 50 rpm | LB40 | 25/80/80/38 C | 60500 Nm | 4300 kg
KRC 240 | 925 mm | KRM80 | 1860 mm | 141 kN | 1200 mm | 630 l/min | 400 bar | 140 MPa | 68 Pcs | PH 38 HD Type | 240 kW | 55 – 80 t | 560 l/min | 50 rpm | LB40 | 25/80/80/38 C | 65300 Nm | 4300 kg

Applications & Usage

• Trenching and pipeline installations — narrow, clean and consistent trench profiles
• Underwater and subsea trenching — operable to 30 m without modification
• Soil stabilisation and foundation work
• Cutting through rock and concrete in heavy-duty conditions

Caractéristiques / spécifications techniques

• Design: Patented inclined dual-drum (V-shaped) gearbox for full-face coverage
• Hydraulics: Double motor design providing high torque and consistent cutting force
• Underwater capability: Operable up to 30 m depth without modification
• Protected hose management to enhance reliability and service life
• Maintenance: Fewer moving parts and simplified maintenance procedures
• Standard picks and pick box types vary by model (examples: PH 20, PH 22 HD, PH 32 HD, PH 38 HD)
• Operating pressure: up to 400 bar (models vary)
• Suitable carrier weight range: from 7 t up to 80 t depending on model
• Rated power range: approx. 40 kW up to 240 kW depending on model
• Typical applications: trenching, pipeline work, underwater/subsea trenching, soil stabilisation, heavy-duty rock cutting