Low-noise block cutter HM-40/80

robusthydraulic

Product overview
The YG Machinery HM-40/80 diamond wire saw is a hydraulic-driven system engineered for cutting thick and reinforced concrete, large blocks and irregular shapes. Designed for demanding demolition and renovation projects, it performs reliably in narrow, wet and underwater conditions.

Embedded video
Demonstration video available showing quiet, precise cutting of concrete and steel with minimal disturbance.

How it works
Hydraulic power drives a continuous steel wire loop fitted with diamond beads. The beads abrade material steadily, enabling stable, vibration-free cuts in reinforced concrete, piers and underwater piles. Automatic tensioning maintains consistent cutting performance.

Technical features

• Stable hydraulic drive
• Long-life diamond beads
• Automatic tension system
• Compatibility with hydraulic wall saws

Key advantages

• Operates in narrow, wet or underwater environments
• High cutting speed for large sections
• Low dust generation and reduced noise
• Suitable for bridges, piers, ports and underwater piles
• No impact on surrounding structures (vibration-free)

Parameters
Wire drive mode: hydraulic
Model / Type: HM-40/80
Minimum input power: 25/33 HP
Output shaft speed: 350 / 940 / 1300 r/min
Maximum wire length: 18 m
Control: fully hydraulic
Cutting machine weight: 64 kg
Motor weight: 14 kg
Rated pump power: 22 / 25 kW
Working voltage: 380 V 50 Hz
Hydraulic pump type: gear pump
Motor flow: 40–100 L/min
Working pressure: 15–20 MPa
Oil tank volume: 17 L
Pump station weight: 98 kg
Pump station dimensions (mm): 650 x 550 x 1150

Industry applications

• Bridge demolition
• Pier and port upgrades
• Underwater pile cutting
• Urban building modification
• Tunnel and subway projects
• Industrial structure removal

Q&A (selected)

• How thick can it cut? Typically over 1 m in thickness depending on setup.
• Can it work underwater? Yes — designed for wet and underwater cutting.
• Does it affect structural stability? No — cutting is vibration-free and impact-free when used correctly.
• Typical price range: USD 8,000–15,000 for common configurations.

Case study (summary)
Port renovation: underwater piles (~2 m diameter). Reported outcomes: ~40% reduction in cutting time, clean cuts without structural damage, and stable long-term operation.

Maintenance and cost considerations

• Wire wear is a recurring consumable cost
• Regular hydraulic oil maintenance required
• Proper wheel care and correct tension/speed can extend wire life by ~30%

Specifications

• Brand: YG Machinery
• Model / Type: HM-40/80
• Wire drive mode: hydraulic
• Minimum input power: 25/33 HP
• Rated pump power: 22/25 kW
• Working voltage: 380 V 50 Hz
• Output shaft speeds: 350 / 940 / 1300 r/min
• Maximum wire length: 18 m
• Motor flow: 40–100 L/min
• Working pressure: 15–20 MPa
• Oil tank volume: 17 L
• Cutting machine weight: 64 kg
• Pump station weight: 98 kg
• Motor weight: 14 kg
• Pump station dimensions: 650 x 550 x 1150 mm
• Recommended uses: wet/underwater cutting, bridges, piers, ports, tunnels, industrial removal