Showing posts with label breaking concrete. Show all posts
Showing posts with label breaking concrete. Show all posts

Bosch 11230EVS 1-1/2-Inch Electronic Variable-Speed SDS-Max Rotary Hammer with Stop Rotation Review

Bosch 11230EVS 1-1/2-Inch Electronic Variable-Speed SDS-Max Rotary Hammer with Stop Rotation
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Rotary hammers are a big buck item so its important to consider all of them. I use this Bosch hammer in my electrical contracting business. Its small enough to handle easily and it is built to minimize the vibration that comes with drilling concrete. It can drill through concrete up to is specification and handle ground rod driving too. Buy this unit and the Bosch bits but consider the DeWalt accessories, like ground rod driver or spade bit, because they are usually less money.

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Bosch 11245EVS 2-Inch SDS-Max Rotary Hammer Review

Bosch 11245EVS 2-Inch SDS-Max Rotary Hammer
Average Reviews:

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I purchased this unit after test-renting a Bosch 11316 Demolition Hammer in order to dig 25 very deep tree holes in the hard, California clay soil where I live. The 11316 was massive overkill for the job (I used it on 30-40% power all day), and often sunk deep into the cement-hard soil just under its own weight!
The 11241 is a fantastic tool - it digs with a clay spade at a moderate pace, dramatically reducing workload for terraforming (moving a lot of dirt, as I did with a retaining wall), and for trenching, digging, and moderate-duty demolition.
BEWARE - it takes 3-4 hours of use before it really *works*. Out of the box, brand new, you will swear this thing is broken. Read the manual - it vaguely refers to a 5 hour break-in period. Trust me, not much happens for the first 2 hours - I recommend finding drilling applications.
So far, I've trenched, drilled holes in concrete, done terraforming, and some serious digging for tree planting and
other gardening tasks. The weight of this unit is ideal for the application, and the power is just sufficient. (5 stars would be reserved for a bit more power - it takes a while to get through some applications where old roots are in the way - the 11316 cut through them like a hot knife through butter).
I've yet to try this unit on concrete - I suspect it will do a credible job, but not great, due to its moderate power output.
I have the clay spade, acaling chisel, and two bull points of different lengths. All work very well.
One superior aspect of this unit over the 11316 monster - the vibration isolation is really nice in the handle. My wrists can tolerate 2-3 hours/day of this work, where 2 hours of the 11316 caused me a week or so of serious aching.

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