Bosch just introduced their new 10-amp DH507 SDS-Max demolition hammer, which is said to offer improved ergonomics and design features, and a best-in-class power to weight ratio.
The new demo hammer is designed to handle common demo chipping tasks, such as removing wall and floor tiles, cutting slots in masonry or concrete, creating recesses, breaking through concrete, separating bricks and blocks, and repairing joints.
It weighs in at 12.4 lbs and delivers 5.6 ft-lbs of impact energy.
Vario-Lock positioning allows the chisel mechanism to be rotated and locked into 12 different positions, so users can always dial in the best working angle. The hammer also features a lock-on button and variable speed dial and trigger.
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Retail price is around $450.
Bosch has been working hard in recent years to reduce the vibrations and shock in a lot of their tools. The press materials for this new demo hammer says that it also features a re-engineered impact system with sleeve control for added user comfort, reducing contact pressure when chiseling for long periods of time. Vibration dampening and reduced impact shock might not seem like a big deal, but if you can tell a difference immediately imagine the effect it has after a few hours.
What you get with the DH507 is a compact demo hammer that can be better maneuvered in tight spaces or from different angles and positions. If you need something a little more hard-hitting, the Bosch 13-amp 11321EVS hamer looks like a good option as it offers more power while only being 1/2 pound heavier and costing less than $100 more.
It’s particularly difficult to judge something like this without first testing it out, but my first impression is that the new design seems quite sound.
Thanks for the post. Manufacturers like Bosch seem to be making progress in upping the capacity of electric chipping and demo hammers – but this is indeed a tough category to judge not only because of the variability of the operators – but also because not all concrete/masonry/rock is created equal. Having a stable of tools and powering options (Battery, AC, Air and Hydraulic) is still the best way to fit the tool to the job (and the worker)
I have the Makita HM0870C. It is 11.1lbs and has 8ft/lbs of impact energy. I don’t see the advantage of the new Bosch here.