Design updates for the new Cat H110 GC and H120 GC hammers help to increase operating reliability to deliver a low cost-per-hour solution for rock breaking and concrete demolition. Hydraulic efficiencies help enhance overall productivity in road construction, trenching and demolition applications, while quick access to maintenance areas helps reduce costs and boost hammer uptime.

Made from high-quality alloy steel, the H110 GC and H120 GC power cells undergo a two-stage heat treatment process to improve durability and lower service costs. Hydraulic components are shielded from damage by heavy-duty side plates. The Cat H120 GC is also equipped with a standard high-vibration adapter, allowing the hammer to withstand sustained high vibrations.

Large-diameter hammer tools – 100 mm and 140 mm for the H110 GC and H120 GC respectively – feature high frequency and impact power to quickly break through tough rock and concrete. Power combines with fast, impact frequencies – 350 to 700 blows per minute (bpm) for the H110 GC and 350 to 550 bpm for the H120 GC – to make short work of breaking through material, helping increase production and efficiency at the jobsite.

Both hammers are designed with a slip-fit and 90-degree rotatable lower bushing for simple replacement in the field and helps extend service life, thus reducing service time and costs. Daily tool inspection and grease points are accessible from the ground with the hammer mounted on the machine for greater safety, while maintenance areas are quick to access for simplified maintenance. Extending hammer life, reinforced connecting hardware and easy bolt tightening help to provide strong, durable joints.

The Cat H110 GC and H120 GC hammers are fully tested and validated with matched machines for better performance and compatibility. Recommended tool carrier weight for the H110 GC ranges from 10 to 18 t and from 18 to 30 t for the H120 GC. Minimum rated flows are 21 gpm (H110 GC) and 32 gpm (H120 GC).

The H110 GC has a minimum operating weight of 917 kg (top mount) and 801 kg (side mount), while the H120 GC features a minimum operating weight of 2,004 kg (top mount) and 1,827 kg (side mount). Minimum operating pressures for the hammers are 2,132 psi (H110 GC) and 2,277 psi (H120 GC).