EK 220 | Chain Cutter for Large Excavators
Extreme-Duty Cutting in Very High-Resistance Ground
- With 73,000 Nm at 400 bar, EK 220 delivers more than double the torque of mid-range models
- A rated power of 220 kW ensures full utilization of large excavator hydraulic systems without exceeding mechanical safety margins.
- The 147.5 kN cutting force enables consistent engagement in high-strength rock and reinforced materials without reliance on impact.
- The 147.5 kN cutting force enables consistent engagement in high-strength rock and reinforced materials without reliance on impact.
The EK 220 Chain Cutter for large excavators represents the upper limit of the EK Chain Cutters range, developed for excavation tasks where ground resistance, tool load, and structural stress define feasibility. Built on KEMROC’s patented continuous chain cutting principle, EK 220 is designed for applications that exceed the operating range of conventional heavy excavation attachments.
Matched with 50–70 ton excavators, EK 220 is selected for projects where excavation is no longer intermittent or selective, but structurally demanding and continuous. Instead of relying on repeated impact or fragmentation, the EK cutting system applies sustained cutting force, allowing controlled material removal even when resistance remains consistently high.
With a verified capability to operate in ground conditions reaching up to 140 MPa uniaxial compressive strength, EK 220 supports excavation tasks at the extreme end of mechanical cutting—where tool stability, torque reserve, and machine compatibility are critical.
Model EK 220
- Recommended excavator weight50 – 70 t 110,000 – 154,000 lb
- Rated power220 kW 295 hp (220 kW)
- Drum cutter length (A)2.400 mm 95 in
- Cutter head width (B)920 mm 36 in
- Cutter drum diameter (C)990 mm 39 in
- Width of gearbox (D)850 mm 34 in
- Recommended rpm40 rpm 40 rpm
- Recommended oil flow420 – 550 l/min 111 – 146 gal/min
- Max. oil flow650 l/min 170 gal/min
- Max. operating pressure400 bar 5,800 psi (400 bar)
- Max. torque at max. hydraulic pressure73,000 Nm 53,840 lbf·ft
- Max. cutting force at max. torque147.5 kN 33,160 lbf
- Max. rock compressive strength140 MPa 20,000 psi (140 MPa) psi
- Weight5.900 kg 13,000 | 14,330 lb
- Pick boxPH 38 HD Type PH 38 HD Type
- Number of picks in cutter drums44 Pcs 44 Pcs
- Number of picks in the cutter chain58 Pcs 58 Pcs
- Standard pickER 25/80/80/38 C ER 25/80/80/38 C
Why Choose the EK 220 Chain Cutter?
Designed for the Highest Resistance Levels
EK 220 is engineered specifically for ground conditions where resistance is the primary limiting factor. Its cutting system prioritizes torque availability and structural integrity over cutting speed.
Matched to Large Excavator Platforms
With a rated power of 220 kW, EK 220 is designed to work within the hydraulic performance envelope of large excavators, ensuring stable operation without overloading the carrier.
Controlled Cutting Where Impact Tools Reach Their Limit
The continuous cutting principle enables predictable material removal, reducing shock loads on both the attachment and the excavator in extreme operating conditions.
• Maximum torque: 73,000 Nm at 400 bar • Maximum cutting force: 147.5 kN These values allow EK 220 to maintain controlled cutting behavior in very high-resistance ground, where lower-capacity attachments become ineffective.
• Recommended oil flow: 420–550 l/min • Maximum oil flow: 650 l/min The hydraulic system is configured to support continuous operation under extreme load, minimizing performance fluctuation during demanding excavation cycles.
• Pick box type: PH 38 HD • Cutter drum picks: 44 • Cutter chain picks: 58 • Standard pick: ER 25/80/80/38 C The pick system is designed to withstand high mechanical stress and abrasive contact, focusing on durability and cutting stability rather than aggressive penetration.
With an operating weight of 5,900 kg, EK 220 provides the mass required to stabilize cutting forces, maintain alignment, and reduce dynamic loads on the excavator during extreme-duty operation.
Main Applications of the EK 220 Chain Cutter for Large Excavators
Extreme-Resistance Ground Excavation
EK 220 chain cutter is used where ground resistance remains consistently high across the excavation area, requiring maximum torque and cutting force.
Large-Scale Structural and Industrial Excavation
Suitable for excavation tasks in large industrial developments and heavy civil projects where material strength exceeds conventional mechanical cutting limits.
Controlled Removal in High-Stress Conditions
The attachment supports controlled material removal in environments where uncontrolled breakage or vibration cannot be tolerated.
Continuous Trenching in Demanding Environments
EK 220 chain cutter is selected for projects requiring long duty cycles under extreme mechanical load, where attachment endurance is critical.
FAQs – EK 220 Chain Cutter
When is EK 220 chain cutter required instead of EK 160?
EK 220 is selected when ground resistance exceeds the practical operating range of smaller chain cutters and higher torque reserves are required.
Is EK 220 intended for standard excavation tasks?
No. EK 220 chain cutter is designed for extreme-duty excavation where conventional attachments cannot maintain stable cutting performance.
Does EK 220 chain cutter rely on impact to break material?
No. It uses continuous mechanical cutting, reducing shock loads and improving control in high-resistance ground.
What limits EK 220’s application range?
The primary limiting factor is carrier compatibility, as EK 220 requires large excavators with sufficient hydraulic capacity.
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