Hydraulic breakers serve as essential equipment for demolition operations and road maintenance and foundation construction and rock extraction work. The open design of conventional breakers produces excessive noise which reaches 120-130 dB during impact operations thus leading to construction noise complaints in densely populated urban areas. The development of silenced hydraulic breakers serves as a primary solution for contractors who need to comply with tightening noise regulations.
METDEEM achieves powerful performance through its complete housing noise reduction system and vibration damping technology which maintains stable impact energy.
Understanding Construction Noise Pollution
What Causes Noise on Job Sites
Heavy machinery including excavators and concrete cutters and hydraulic breakers operates at most construction sites. The operation of hydraulic breakers against rock and reinforced concrete produces continuous loud impact sounds. The open design of standard breakers reveals their internal impact system to the air which enables sound and vibration to escape freely.
Impact on Surrounding Communities
High-intensity, repetitive impact noise can cause:
- Disturbance to nearby residents and businesses.
- Stress, sleep interruption, and headaches.
- Communication difficulty and safety risks for workers.
- Noise reflection and amplification in narrow urban streets.
Urban surveys show that sites exceeding 90 dB are associated with significantly higher complaint rates and increased worker fatigue. Schools, hospitals, and office zones are especially sensitive environments where noise control is mandatory.
Growing Global Noise Regulations
London and New York and Singapore have established strict rules to control construction noise during daytime hours. The non-compliance of construction noise regulations results in daily fines ranging from $1,000 to $5,000. The threat of penalties drives contractors to look for equipment that produces minimal noise. The use of hydraulic breakers with noise reduction technology helps reduce emissions where the noise originates and stops work interruptions and penalty payments and public complaints.
What is a Silenced Hydraulic Breaker?
Basic Definition
A silenced hydraulic breaker (also called a boxed-type hydraulic hammer) is an excavator attachment designed to provide strong impact energy while significantly reducing noise and vibration. It performs the same breaking tasks as a standard breaker but uses an enclosed housing and integrated damping system to lower sound levels during operation.
How It Differs from Standard Open-Type Breakers
| Особенность | Open-Type Breaker | Silenced (Box-Type) Breaker |
| Housing | Exposed structure | Fully enclosed steel housing |
| Noise Level | High (up to 120–130 dB) | Reduced (typically −10 to −15 dB) |
| Vibrations | More transmitted to boom/cab | Lower vibration via damping pads |
| Urban Compliance | Often difficult | Meets city construction noise limits |
| Operator Comfort | Higher fatigue | Significantly improved |
METDEEM’ с DM165 Гидравлический тип коробки выключателя and other box-type models maintain strong breaking power while reducing noise and vibration to meet urban construction standards.
How Silenced Breakers Reduce Noise
Fully Enclosed Housing Structure
The protective steel enclosure surrounding the breaker body isolates internal impact noise. This structure prevents direct sound radiation and reduces airborne noise by 10–15 dB under typical operating conditions.
High-Performance Damping Materials
Inside the enclosure, METDEEM integrates:
- Polyurethane damping pads.
- Rubber isolation blocks.
- Noise-absorbing plates.
These components reduce structural vibration and limit transmission to the excavator arm.
Internal Hydraulic Buffering and Energy Control
METDEEM breakers use:
- Hydraulic flow buffering.
- Accumulator-assisted energy recovery.
- Recoil reduction design.
These systems smooth impact cycles, lower vibration peaks, and stabilize the hammer during continuous operation—enhancing both durability and comfort.
Benefits of METDEEM Silenced Hydraulic Breakers
Guaranteed Compliance with Urban Noise Limits
Silenced models such as METDEEM ДМ40 help contractors meet municipal noise limits for:
- City centers.
- Residential demolition.
- School zones.
- Hospital and office districts.
Lower noise also prevents costly fines and keeps work progressing without interruption.
Enhanced Operator Comfort and Safety
Reduced noise and vibration help:
- Lower fatigue.
- Improve communication on site.
- Reduce risk of hearing damage.
- Maintain better machine control.
METDEEM uses high-strength alloy steel and optimized hydraulic circuits to ensure stable and efficient breaking with reduced recoil.
Better Community Relations and Fewer Complaints
Low-noise equipment dramatically reduces disturbance to surrounding homes and businesses.
This improves:
- Project acceptance.
- Public reputation.
- Coordination with local authorities.
- Chances of winning future bids.
Silenced breakers allow contractors to work longer permitted hours without conflict.
Applications for METDEEM Silenced Breakers
- Urban Construction and Foundation Work: In dense downtown areas, noise limits are strict.Silenced models allow rock breaking, trenching, and foundation removal with minimal disruption.
- Road and Bridge Maintenance: Traffic cannot always be stopped. Silenced breakers minimize disturbance to drivers and pedestrians duringasphalt removal, roadbed demolition and bridge repai
- Demolition Near Residential or Sensitive Areas: When working close to houses, apartments, schools, or clinics, low-noise demolition equipment is essential.
Choosing the Right METDEEM Breaker
Key Selection Factors
When selecting a breaker, consider:
- Excavator operating weight.
- Hydraulic flow and pressure.
- Chisel diameter.
- Impact frequency.
- Material hardness and application type.
METDEEM offers models for excavators 0.8–49 tons, ensuring compatibility with most global brands including CAT®, Komatsu®, Volvo®, SANY®, and XCMG®.
Model Matching Examples
- DM35: For 8ton excavators, compact urban jobs.
- DM75: For 7-9ton excavators, roadwork and light demolition.
- DM175: For 40-49ton excavators, heavy-duty concrete and rock breaking.
Each model undergoes factory hydraulic testing to ensure optimal performance.
Maintenance Tips for Long Service Life
- Grease regularly to reduce tool wear.
- Protect seals from dust and sand.
- Use genuine spare parts.
- Check bolts, bushings, and hoses frequently.
- Clean after rain or muddy conditions.
- Follow hydraulic oil flow and pressure recommendations.
Proper maintenance significantly reduces downtime and increases the service life of METDEEM breakers.
Вывод
Silenced hydraulic breakers are essential for modern urban construction. They help contractors meet noise regulations, protect workers, and maintain positive community relations—without sacrificing productivity. МЕТДИМ‘s silenced breaker lineup offers reliable performance, reduced noise, enhanced safety, and proven durability across a wide range of excavator classes and applications.
Часто задаваемые вопросы
Q: What makes a silenced hydraulic breaker quieter?
A: A fully enclosed housing and internal damping system reduce both airborne noise and structural vibration.
Q: Are METDEEM breakers compatible with major excavator brands?
A: Yes. METDEEM breakers fit CAT®, Komatsu®, Volvo®, SANY®, XCMG®, and most international and domestic machines.
Q: What‘s the warranty period?
A: 1 year or 2,000 hours against defects in materials, design, or workmanship.
Q: Do you provide after-sales support?
A: Yes—METDEEM offers selection guidance, installation support, troubleshooting, and customization options.
