DHR264 – is this normal?

Hi there. So I have the dhr264 36v sds drill. When drilling in masonry I use rotation + hammer mode. As its drilling if I apply pressure it then “kicks” the drill bit in the wall…. Is this a normal function? As I don’t feel I am applying excessive force & without any force it obviously wouldn’t drill as well. Just to confirm I am using sds plus bits. 

Probably no help, but with my Dewalt 20v Max SDS, it works the same way. Using the hammer only mode, it basically does nothing until a bit of pressure is exerted. There is a line where there’s too little, or too much. Need to find the sweet spot.

Isn’t hammer only for chiselling?

Yeah, just figured it was a similar deal as far as requiring a bit of pressure to engage the hammer function, even in combo mode.

Could be. Just unsure. It has a shock absorption handle. Wouldn’t think it would kick so hard. 

Most rotary hammers don’t engage the hammer unless you put pressure on the bit. Its complicated but doing that reduces wear by a ton. What youre seeing is just normal.

Very normal for an SDS 🙂 Drill away !!

Ok that’s fine then. Just a very strong kick so was just worried. Almost a chisel than a drill when it kicks. Trick to drilling holes that don’t get too big just don’t apply any pressure I guess?

You can feather the trigger starting the hole to reduce spalling, but if you don’t apply pressure it won’t drill a hole.  It’s that chiseling action that breaks up the masonry so you can drill with it.

Yeah I kind of assumed it would punch a bit. But build up to it if u get me. It just drills then a big punch once pressure is applied. Hence why I thought I would ask. Just glad it’s working how it should. I guess it’s more of a case of u have to get used to the drill. 

I have the Makita XRH05Z which is the US equivalent, I believe. I only used it once to break a 4 inch slab, but boy was that fun. I know what you mean about the kick… it’s strong, but watch the videos on youtube and you will see it is normal. It’s really unbelievable how a cordless tool can have so much power… in hammer only mode, I remember hitting rebar with my chisel tip and watching sparks fly. The only sad part about my rotary is that it remains a trophy in my toolbox and not used enough… can’t wait for my next demolition.

Yeah. My friends sds drill he uses for drilling holes in brick. Seems to do the job fine. Mine seems more of a demolition job if u apply the slightest pressure. Hence why I had to ask if it was the norm

You can start by just rotary mode to get a hole going then kick into hammer drill mode, what your seeing is normal though you need to apply pressure to engage the hammer mode


Jimbo

Sent from my iPhone using Tapatalk

Its normal because its striker inside cylinder and it going back becouse of hit to chisel and then gong forward from compresion and back agaun… But if your tool starts to kick back to your hand then you need replace o-rings in hammer mechanism. 

A video perhaps? Just so we can see your concern without a doubt as to what it’s really doing

Sent from my XT1585 using Tapatalk