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Introduction to the H55 Hydraulic Hammer
The H55 hydraulic hammer is a robust demolition attachment commonly used in construction, mining, and quarrying operations. Designed to deliver powerful impact blows, this hammer is mounted on excavators or backhoe loaders to break rock, concrete, and other hard materials efficiently. Its balance of power and weight makes it a versatile tool across a range of machine classes.
Key Specifications and Features
The H55 hammer converts hydraulic power from the host machine into mechanical impact energy. This is accomplished by a piston inside the hammer cylinder striking the tool bit repeatedly. The rapid hammering action fractures tough materials, enabling efficient demolition or excavation tasks.
Common applications include:
Maintaining an H55 hammer is vital for safety and operational efficiency. Common maintenance points include:
Operator Tips for Efficient Use
A demolition contractor utilized the H55 hammer on a mid-sized excavator to remove thick concrete walls in an urban redevelopment project. Despite challenging access and heavy reinforcement in the concrete, the hammer’s consistent blow energy and manageable weight allowed the operator to work efficiently without overstraining the excavator hydraulics. Scheduled daily greasing and regular tool bit inspections kept downtime minimal.
Summary Maintenance Checklist for the H55 Hammer
The H55 hydraulic hammer is a powerful, reliable demolition tool adaptable to a variety of tasks and machines. Understanding its operating principles, maintenance needs, and usage best practices can significantly enhance job site productivity and equipment longevity. Whether breaking rock, concrete, or asphalt, the H55 offers a solid balance of power and control, making it a favored attachment for contractors and operators worldwide.
The H55 hydraulic hammer is a robust demolition attachment commonly used in construction, mining, and quarrying operations. Designed to deliver powerful impact blows, this hammer is mounted on excavators or backhoe loaders to break rock, concrete, and other hard materials efficiently. Its balance of power and weight makes it a versatile tool across a range of machine classes.
Key Specifications and Features
- Operating Weight: Approximately 3,000 to 3,500 lbs (1,360 to 1,590 kg)
- Impact Energy: Roughly 1,200 to 1,500 ft-lbs per blow
- Blow Rate: 350 to 450 blows per minute depending on hydraulic flow and pressure
- Hydraulic Requirements: Flow rate between 15 to 30 gallons per minute (GPM), operating pressure around 3,000 psi
- Tool Diameter: Compatible with chisels or moil points approximately 3 to 4 inches in diameter
- Construction: Heavy-duty steel housing with replaceable wear parts for longevity
The H55 hammer converts hydraulic power from the host machine into mechanical impact energy. This is accomplished by a piston inside the hammer cylinder striking the tool bit repeatedly. The rapid hammering action fractures tough materials, enabling efficient demolition or excavation tasks.
Common applications include:
- Breaking concrete foundations or slabs
- Demolishing asphalt pavement
- Fragmenting rock in quarry or mining sites
- Trenching and excavation in rocky soil
Maintaining an H55 hammer is vital for safety and operational efficiency. Common maintenance points include:
- Hydraulic System Check: Ensure clean, properly filtered hydraulic oil to avoid contamination damage
- Tool and Bushings: Regularly inspect the tool bit and bushings for wear; replace worn parts to prevent damage to the hammer body
- Nitrogen Gas Charge: Some models use nitrogen gas for cushioning; check and recharge as necessary according to manufacturer guidelines
- Seals and Hoses: Replace seals and hydraulic hoses showing signs of leakage or cracking promptly
- Greasing: Keep all lubrication points properly greased to minimize friction and wear
Operator Tips for Efficient Use
- Match the hammer size and impact energy to the host machine’s hydraulic capacity and task requirements
- Avoid “dry firing” (operating the hammer without contact) to prevent piston and tool damage
- Use appropriate tools (chisels or moils) for specific materials and jobs to maximize efficiency
- Monitor hydraulic temperature and pressure during operation to avoid overheating or overloading the system
- Operate at steady impact rates rather than excessive force to prolong hammer life
- Blow Rate: Number of impact strikes the hammer delivers per minute
- Impact Energy: The amount of force delivered per blow, generally measured in foot-pounds or joules
- Piston: Internal hammer component that moves rapidly to strike the tool bit
- Tool Bit: The replaceable chisel or moil point that directly contacts and breaks the material
- Nitrogen Gas Charge: Pressurized gas used inside some hammers to cushion piston return and absorb impact recoil
A demolition contractor utilized the H55 hammer on a mid-sized excavator to remove thick concrete walls in an urban redevelopment project. Despite challenging access and heavy reinforcement in the concrete, the hammer’s consistent blow energy and manageable weight allowed the operator to work efficiently without overstraining the excavator hydraulics. Scheduled daily greasing and regular tool bit inspections kept downtime minimal.
Summary Maintenance Checklist for the H55 Hammer
- Check hydraulic oil cleanliness and filters
- Inspect and replace worn tool bits and bushings
- Monitor nitrogen gas pressure (if applicable)
- Examine seals and hoses for leaks or cracks
- Ensure proper lubrication of moving parts
- Watch hydraulic system pressure and temperature during use
The H55 hydraulic hammer is a powerful, reliable demolition tool adaptable to a variety of tasks and machines. Understanding its operating principles, maintenance needs, and usage best practices can significantly enhance job site productivity and equipment longevity. Whether breaking rock, concrete, or asphalt, the H55 offers a solid balance of power and control, making it a favored attachment for contractors and operators worldwide.
