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What's your problem? rotary hammer will not hammer

Relatively new, rotary hammer drill will rotate, but has no hammering action

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2 Answers

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  • Bosch Master
  • 1,825 Answers

If its a little rotary hammer of Bosch in many cases its the same old problem that the Hammer have had reached its working hours and the drive transmission between anchor and gear is worn that will happens ofter then something to find thats broken.

Posted on Apr 17, 2016

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  • Bosch Master
  • 45,531 Answers

Look for a lever that has signs hammer/drill or just drill Place the lever in the hammer position.

Posted on Aug 04, 2013

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

rowdy45176
  • 2176 Answers

SOURCE: my milwaukee 5316 rotary hammer drill wont

Could be a couple things, do you have the selector in the rotation mode, also there is an internal clutch that might have broken or the splines on the spindle might be rounded. If it is the clutch you would have to take it in for repair, it is extremely tricky to work on. Take the bit out (make sure you are using the right bits for this tool) and look at the splines to check their condition. Let me know if I can help more

Posted on Aug 25, 2009

  • 5 Answers

SOURCE: rotary hammer won't rotate, hammers very good

If tool hammers brushes still good. Motor runs hammer action.
Take hammer/ drill switch lever off by removing small plastic plug in center with small screw driver.remove indicator handle off by removing #8 torx screw and lightly pry off. There is a pin and spring that lock tool into hammer or drill.Check for broken spring or binding spring and pin.If binding , clean and grease.

Posted on Jul 08, 2009

comax
  • 154 Answers

SOURCE: Bosch rotary hammer (model # 11230EVS) drill will not rotate

There is a clutch in the main spur wheel of the unit. These sometime begin to slip, on rare occasions they will slip to the point where the drill will not rotate. If you are interested the part number for this clutch is 1617000817.

Posted on Aug 06, 2009

  • 1 Answer

SOURCE: Makita HP1640 hammer drill dual mode - 2 hours

Exchanged Makita HP1640 hammer drill for a new one. The 2nd drill did the same thing in under an hour!! Will return for refund. Instructions say the Forward/Reverse switch must be in a full up or down position for the Hammer/Rotary switch to move; well, it is and the Hammer/Rotary switch still stops at a 1/2 way point between modes. Although I can still use the drill, instruction warnings say not to because it may potentially burn out the motor. I'll have to go with a different brand this 3rd time around. It seems to be a design flaw.

Posted on Oct 11, 2009

deme-tri
  • 90 Answers

SOURCE: I have a makita hr2455x rotary hammer drill that won't hammer

you need to get that service,
the grease causes the hammering.
and probably too much pressure was applied
to it.

Posted on Dec 03, 2009

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1 Answer

How to fix Hammer drill which does not "hammer" in Hammer mode, but rotates normally in rotary but NO hammer action in this mode also?


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

Oct 22, 2015 | Rotary Drills

1 Answer

I have the chance of a cheap D25303K dewalt 230 volt drill. does it have a chisel rotation stop (percussion only) feature ?


Go to the Dewalt service website at http://servicenet.dewalt.com, put the model number in the parts search box and you'll be able to view or download the parts breakdown and owner's manual. By the manual that model does have three modes; a hammer only, drill only and hammer/drill.

May 28, 2012 | Dewalt D25303K Electric rotary hammers

1 Answer

Will it go back and forth as well as rotate?


depends on the drill. give me the brand and model number and I will try and help. Some hammers have a selector on the side to go from hammer drill to hammer and then drill only. Let me know and I will try and help

Jan 08, 2012 | Dewalt Drills

1 Answer

Rotary hammer 11245EVS - Rotates but does not hammer. Thank you. Glen


The motor in these rotary hammers drives two systems in the gun, one to rotate the bit and another that produces the hammering action. The hammer system is mainly a piston driven by a plastic connecting rod on an eccentric cog. The 'usual' failure is the plastic connecting rod but could be any of the gear pins or teeth. It is also possible the striker is stuck in the hammer pipe if the gun wasn't lubricated properly. There are over two hundred parts inside one of these tools so if you're not familiar with repairing one I highly suggest finding a repair shop that works on them. They are good tools and usually worth repairing unless a lot of major parts broke inside.

Aug 15, 2011 | Bosch 11245EVS 2Inch SDSMax Rotary Hammer

1 Answer

Do all sds drills have chisel function?


The SDS designation relates more to the type of chuck on the tool for the bits than to the tool/drill itself. There are both chisels and drill bits with SDS-Plus and SDS-Max shanks, SDS-Max being the the larger of the two. As far as the tools go: Demolition hammers will only hammer and can only use pointed chisels, scaling chisels, scrapers, etc, not anything like a drill bit that requires spinning to work. Rotary hammers can hammer and rotate the bits. Rotary hammers have a selector switch with two or three positions; one for hammer only for the above demolition bits, one for rotary hammer for use with carbite tipped drill bits, and some have a position for rotation only. The rotary hammer is a more versitile tool but more expensive because of extra workings inside.

Feb 17, 2011 | Garden

1 Answer

No hammer effect, motor work OK


First try the switch for hammerdrill/drill action. If it feels loose, then its internal. if it feels ok, then your hammers on the cage are stuck, frozen or worn.

Jul 17, 2009 | Hitachi DH38YE 1 1/2" Spline Rotary Hammer

1 Answer

Drill will rotate but will not hammer under load


most of these types of tools have a manual switch it will be located on the body of the drill just behind the chuck on top or bottom or oposit the grip handle. some models have 2 switches.you want to make sure the switch points to the picture that shows a hammer and drill together.also rember it needs to have down pressure for the hammer part to activate.

May 19, 2009 | Dewalt 1 9/16" Rotary Hammer Drill D25551k

2 Answers

Rotary hammer won't rotate, hammers very good


Unscrew the brushes and take a look at them. It sounds like you need new brushes.

Apr 06, 2009 | Drills

3 Answers

Hammer drills and rotary hammers comparison


Basically yes. Lower power units are usually titled as "hammer drills." Higher power units, usually labeled "rotary hammers," tend to be larger and provide bigger impact forces. But there are a few differences that are worth knowing: The rotary hammer usually have a chisel only feature, for light chiseling and masonry removal. Rotary hammers also have specially designed chucks that only accept bits specifically designed to fit their chuck. The special chuck on a rotary hammer helps hold the drill bit and prevents it from slipping during use.

Aug 27, 2008 | Irwin SDS-Plus Hammer Drill Bit 6in.L,...

1 Answer

Hammer drills types


Two drive systems are available on both the hammer drill and the rotary hammer models: 1. SDS (or Slotted Drive System) bits for hammer drills/rotary hammers allow the bit to slide in the chuck and enhance the hammering action of the tool. For most applications, these bits provide plenty of torque. 2. SDS Max bits are similar to SDS bits, but have larger shanks and come in larger sizes than SDS bits. These powerful bits are useful in industrial applications.

Aug 27, 2008 | Irwin SDS-Plus Hammer Drill Bit 6in.L,...

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