BOSCH RH850VC SDS-max® 1-7/8 In. Combination Hammer

These are top notch drills have been used and abused and still keep on keeping on.....

I used a friend's rh745 and it worked great for drilling 1 1/2 inch holes. That took about 5 minutes to go 8 inches into large rock. This one took 4 minutes to go 16 inches deep. What a beast.

Used this to remove 20’x4’x2’ section of ledgerock. Drilling 1 1/2” holes for Dexpan, using Bosch drills for rock, took several days and several bits. As slow as this went I could not imagine using a larger drill. Drill has plenty of power, drilling quickly through rock with a 3/4” drill (until it snapped). Rotary chisel function worked well to break rock up after Dexpan cracked rock.

I live on 2 1/2 acres of Central Oregon Rock pan. I bought this drill and a 1 1/2" rock bit to install 100+ t-posts. This made the job simple. I drilled the16" deep holes in less than a minute. Well worth every penny. Great investment I'd do over anytime.

It arrived damaged, the plastic box is broken.

It’s lighter than it looks and does an amazing job of drilling granite boulders. The proper bit helps too. No complaints as of yet. Definitely use the grease provided and you’ll have to get more than what was in the case.

We live on a big rock outcropping. A fence was something we only dreamed of, until we got this hammer drill! We now have 2.5 acres fenced as a result and a dog that could not possibly be happier! We purchased a 1 1/2 inch bit and were able to drill perfectly sized holes for the T-posts in solid rock. The Bosch drill made an impossible job, possible! It is a real work horse. Let the weight of the drill do the heavy work. We have used it to break up the tops of rocks in our driveway (with a big chisel bit) and a few other big jobs. Very satisfied with the performance of the drill.

The media could not be loaded. My framer came over with his huge jackhammer, but he couldn't finish opening the floor slab as his arms got sore from the vibrations after an hour. To finish the project, I bought my own that could also serve as a drill. This Bosch RH850VC seems to cut through the concrete faster than the large back-breaking models! I can easily finish the job and cut through the rest of the slab. What's most impressive is that it feels smooth and comfortable to operate. I could barely feel any vibrations. It is not nearly as loud as the big units, but seems to break faster. With all the other jackhammers I run to get the earplugs, but this was quieter so I forgot to use the earplugs. Here's a video.