Cat GC Hammers Cat GC Hammers
GC Hammers at work GC Hammers at work
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Impact Energy Class2950 ft-lb (4000 J)
Blows per Minute400-800
Maximum Operating Weight3927 lb (1785 kg)
Minimum Operating Weight3859 lb (1754 kg)
Cat® Hammers make short work of your demolition, construction, and quarry needs. Combine the simple, lightweight design of the GC S Hammer series with the reliability, durability, and value you expect from Cat products. The result is a low cost per hour solution providing the consistent power and performance you need.


Impact Energy Class2950 ft-lb (4000 J)
Blows per Minute400-800
Maximum Operating Weight3927 lb (1785 kg)
Minimum Operating Weight3859 lb (1754 kg)
Maximum Carrier Weight55115 lb (25 t)
Minimum Carrier Weight39683 lb (18 t)
Tool Shaft Diameter5.31 in (135 mm)
Maximum Operating Pressure2610 psi (18000 kPa)
Minimum Operating Pressure2320 psi (16000 kPa)
Rated Flow - Maximum40 gal/min (151 l/min)
Rated Flow - Minimum33 gal/min (125 l/min)

Benefits and Features

  • Go where the job takes you. The Cat® Dealer Network is there to help when you need it.
  • Rely on Caterpillar for complete system support. Receive parts, service, and technical assistance for your machine, hammer, and hydraulics from a single source.

  • Cat® Hammers use up to 25 percent less fuel and are up to 27 percent more efficient.
  • The standard silencing feature, indicated by the 'S' in the nomenclature, protects your operator and everyone near the jobsite.
  • It also allows you to work on jobsites where noise is regulated.
  • The power cell is protected by the fully enclosed housing.
  • The housing also prevents dust and debris from entering the bushing.
  • Enjoy fast service times and lower owning and operating costs with the simplified design.
  • Choose between top and side mount options to match your application.
  • Achieve consistent power and production over time with the gas fired design.
  • Cat Hammers are designed to work with our machines as a total solution and provide seamless hydraulic connectivity for maximum performance.
  • The buffering system reduces vibration to the machine, improves noise suppression, and improved hammer durability.

  • Protect against blank firing with automatic shut off.
  • This feature helps prevent damage to your machine and premature damage to your hammer by detecting when the hammer is not in contact with material.
  • Operator feel, and control is improved with an interlocking quad wear system which guides and supports the front head.
  • Select between high blow frequency and maximum power to get the performance you need to suit your application.
  • Easily adjust the piston stroke between long and short stroke positions to match application requirements.

  • Achieve up to 18 percent lower maintenance costs with Cat® Hammers.
  • Easy and quick access to maintenance areas ensures the hammer always operates at its peak.
  • Spend more time working and less time on service.
  • Greasing can be performed quickly from one standing-height grease point.
  • Service the lower bushing in the field using simple hand tools.
  • Verify the gas charge of the hammer without removing it from your machine.
  • With the standard auto-lube system, your hammer is greased while it runs - saving you time and protecting your investment.