High-Performance Hydraulic Breakers Designed to Get the Job Done

The concept of the high performance boom-mounted hydraulic hammer was pioneered by Allied Construction Products in 1968. As the industry leader, Allied boom-mounted hydraulic breakers combine performance, efficiency and reliability.


Choose from a variety of models in the Rammer® Excellence Series and Performance Series, designed to fit a variety of carriers from large to mini-sized.

  • Heavy-duty sealed housing design enclosed at bottom, suspends the internal working body inside a full-box enclosure to protect the hammer, reduce noise and minimize vibration and wear on the carrier.
  • Gas-assist design using low-pressure nitrogen improves efficiency by reducing demand on the carrier’s hydraulic system
  • Large piston
  • Large tool diameter
  • IBP (Idle Blow Protector) on medium and large models prevents idle strokes, avoiding internal stress and extending life span as well as lower owning and operating costs
  • Optional Automatic Greasing System can be mounted on the hammer housing, dispenses lubricant throughout the hammer
  • Urban-friendly
  • Low operating costs
  • Easy to use and service
  • Excellent power-to-weight ratio
  • Quick-change tool system
  • Constant high productivity
Models Carrier class Service weight Oil flow rate Impact rate Working tool diameter


290 kg

500-950 1/min

Big Hammer Co is an aftermarket manufacturer for all the brands we sell. Big Hammer Co is not endorsed or sponsored by, or in any way associated with Allied. This product is an aftermarket part.

Any use of or reference to the Allied trademark is for the sole purpose of indicating compatibility or product fit, and is not meant to imply any affiliation or relationship between Big Hammer Co and Allied and/or the Allied Trademark.