Monoblock vs Tie Rod Design
Hydraulic Hammers are a crucial tool used on excavators for demolition and breaking through rocky environments. One feature that should not be overlooked before your next purchase is whether to use a Monoblock Hammer or a Tie Rod Hammer.
Tie Rod Hammers are designed by using multiple plates of steel sandwiched together with seals. These plates are then joined together with long bolts called tie rods. The tie rod design makes the manufacture of hammers much more economical, and is still the main design used on very large hammers.
Monoblock Hammers use a single piece of steel as the internal body of the hammer.
There is really only one benefit of a Tie Rod Hammer over a Monoblock Hammer, and that is the cost to manufacture. It is far less expensive to manufacture Tie Rod Hammers than Monoblock Hammers, and this is the main reason that large hammers are still manufactured in this way. Many hammer manufacturers, such as Demoter, use a monoblock design for their small range of hammers and tie rod design for their large range due to the costs.
Monoblock The benefit in power, service life and reduced weight of a Monoblock Hammer greatly exceeds the higher cost of manufacturing smaller hammers. Tie Rod Hammers simply do not last as long or hit as hard as a Monoblock Hammer.