Rotary Drills - Recent Questions, Troubleshooting & Support

You make the mistake that everyone knows what a '911' is! To me it is a car made by Porsche!


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Rotary Drills | Answered on Mar 02, 2019

This photo is from a Dremel (not Drill Master) but it should be similar. Your tool may have different size collets that take different size diameter shaft bits. You may have the wrong collet (collar) for the bit you want to use.
If your tool only has one size collet then there could be debris stuck in the collet slits which prevent the collet from compressing down on the shaft bit when the top nut is tightened. And sometimes it just takes more torque on the nut that screws over the collet to really tighten it down on the shaft

Rotary Drills | Answered on Jan 26, 2019

Very useful.

Rotary Drills | Answered on Jun 19, 2018

Your one sounds like this one

However there are three variants on this page.

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Rotary Drills | Answered on May 27, 2018

Hold the drill bit with bench wise jaws at up wright way and keep a piece of wood log with chuck head & give it a hammer shot opposite way.Be sure to loosen chuck fully anti-clock wise.If your drill chuck pull releasing type you have to pull it and put a brake on it.

Rotary Drills | Answered on Jul 06, 2017

Fixya does not stock parts for tools. Perhaps if you post the model (because the picture is not clear) we can locate some

Rotary Drills | Answered on Feb 17, 2017

How is the health of position 21 until 27 ??? i think the impactbolt pos 24 has a problem because of the weakness of the material thats used by most of the rotary hammers in these days ,a rotary hammer is not specially made for longlasting jobs, only a few brands have had it like DUSS and Hilti but a demolition hammer is made by more expensive heavier quality materials and made for working 1 or max 2 hours at a strech , a rotary hammer cannot last that jobs.
Buy a consumables kit for this machine, and the special grease for it and use only the Makita heat-resistant lubricant, because only replacing piston rings will not work beware on the lubrication when if there was something leaking in front the o-rings are all be hard and weak because when the pneumatic function is lost and its leaking in the front of the spindle is the first thing to have an good working(and not leaking) inpactbold is the highest priority for the function of the hammerfunction. the first link is having the list

Rotary Drills | Answered on Sep 18, 2016

Remove the chuck and try and release the bit.

Rotary Drills | Answered on Aug 11, 2016

Ok about changing the brushes but have you searched if the place where the brushes are located allow the brushes to move forward freely or they are in a way were narrowed so that the brushes can only move for few millimeters?

Rotary Bosch... | Answered on May 03, 2016

then the broken hammerpiston or the impact bolt ring in front of the locking sleeve can be broken

Rotary Drills | Answered on Apr 24, 2016

unmount the locking rings pins or ball of the toolholder while chisel is inside its possible make the parts short time hot with a burner not to long (where safety glasses ) and leather apron in case of splinters that can come off . spray some wd 40 on the hot part before use a bench vise to set the chisel in with machine on it and the beveled edge of the benchhammer on the front of the tool holder and with a second hammer beat the other site on the benchhammer to work slowly the machine will come off from the chisel. in most cases the drill guide has been worn out from the chuck in case off a cheap rotary hammer it make no sense to do it all. because it has had it working hours on it.

Rotary Drills | Answered on Apr 18, 2016

you probably won't as the GMC operation went broke
I am led to believe that ozito took them over so there is a possibility that the ozito hammer drill will use the same brushes
It is worth a try
other than that, many electric motors use generic brushes so may be an appliance repair shop that has a lot of repairs to hand drills and small electric motors may be able to supply a set of brushes
a sample would be a big advantage when asking around

Rotary Drills | Answered on Apr 05, 2016

You don't mention the brand and model number so I give you this hopefully it will help.

Rotary Drills | Answered on Feb 15, 2016

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