H55s Hydraulic Hammer

Operating Weight - With Tool

760.6 lb

Energy Class

599.6 ft·lbf

Machine Class

93 HP

3-6 Ton Mini Excavators, 216-299 Skid Steer/Compact Track Loaders


Cat® Hammers for Skid Steer Loaders, Multi Terrain Loaders, Compact Track Loaders, Mini Excavators and Backhoe Loaders are high performance breakers, designed for maximum performance on demolition, construction and road work.

Detailed Equipment Specifications

  • Operating Weight - With Tool

    760.6 lb

    345 kg

  • Energy Class

    599.6 ft·lbf

    813 J

  • Machine Class

    93.0 in

    93.0 mm

    3-6 Ton Mini Excavators, 216-299 Skid Steer/Compact Track Loaders

  • Tool Shaft Diameter

    2.3 in

    58 mm

  • Impact Frequency

    93.0 in

    93.0 mm

    600-1680 bpm

  • Minimum Operating Pressure

    1,450.4 psi

    10,000 kPa

  • Minimum Carrier Weight

    5,500.5 lb

    2,495 kg

  • Optimal Hydraulic Flow

    93.0 in

    93.0 mm

    30-85 lpm (8-22 gpm)

  • Overall Width

    13.6 in

    346 mm

  • Overall Length

    17.8 in

    451 mm

  • Overall Height

    43.6 in

    1,108 mm

  • Height - Without Tool

    30.9 in

    784 mm

  • Sound Level

    93.0 in

    93.0 mm

    120 dB

  • Mounting Bracket Size

    93.0 in

    93.0 mm



Used in a wide range of construction and light demolition applications - such as breaking concrete sidewalks and driveways, pavement, roads, masonry, site prep and landscaping, and breaking frozen ground for utility repairs.


Fully enclosed, silenced housing lowers overall noise level for a quieter, safer job site. Internal power cell is protected, designed and engineered to eliminate stress points.

Flat Top/Top-Mount Style

Flat top/top-mount style provides a larger work area and excellent operator visibility with a common footprint and hole pattern for optimum versatility. Top-mount style increases impact power by keeping breaker force and stick force in line. A top-mount bracket will transfer back significantly less recoil and bending stress into the end of the stick, resulting in reduced impact on machine structures. Full complement of mounting brackets is available to suite coupler or pin-on preference.

Auto Shut Off (ASO)

ASO instantly stops the piston when breaking through material, preventing blank firing, a key contributor to hammer wear. Internal stresses are reduced, hammer is protected regardless of operator skill level.

Tri-Suspension System

Tri-Suspension system comprises the suspension jacket, the upper and lower buffers. Suspension aligns power cell and gives manageable, smooth performance.

Standing Height Grease Point

Standing height grease point makes required maintenance comfortable and easy to perform.

Easy to Tune & Maintain

Gas ports and valves are easy to check and charge while hammer is mounted to machine.

Ports Positioned for Hose Protection

Improved routing protects against force and dirt during impact, eliminating downtime.

Hammer Tools

Tools are heat-treated, matched to piston diameter and provide optimum mass to deliver full blow energy.

Similar Attachments


  • Machines built tough and ready to run in rugged applications

  • Trusted advisors to help you find and maximize your equipment

  • Wide inventory of rental equipment that lets you try before you buy

  • Full service and support to ensure performance and longevity