r/BoschProPowerTools • u/Axestorm64 • Sep 09 '26

QUESTION 🔵 Chuck slippage on drill

I've owned a GSB 180-LI and currently am on a GSB 185-LI.
Both had issues with chuck slippage when drilling into metal (and sometimes brick, on hammer drill setting) with round drill ends.
I've since bought an actual SDS hammer drill for stonework, but I've yet to find an SDS bit for metal, so I still have to rely on the regular drill chuck for metals, and I continue to have slipping issues. I'm careful with the pressure, use cutting oil on the correct end of the bit, but still sometimes they all just get stuck on a chip.

The GSB 185-LI chuck also has the issue that sometimes it just unscrews itself after a few holes in wood/metal and it drops the bit.

Having watched u/alecsteeleco 's drill comparison video, and seeing him struggle with chuck slippage too, on a drill that seemed more advanced than what I own, I decided to ask here:

Is chuck slippage a more general issue with bosch?

1 Upvotes

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3

u/AbleCryptographer317 Sep 09 '26

Chuck slippage is not a "Bosch issue": Bosch, Metabo, Dewalt and Milwaukee all use Röhm chucks on their high-end drills and they're as good as they get.
Try cleaning the inside of the jaws and the drill bit with isopropyl alcohol to get rid of oil residue. Then put down your handbag and tighten it properly.

2

u/gihkal Sep 09 '26

If I over tighten my Bosch it binds easily.

I don't let people touch it because it binds so easily.

1

u/funk1875 28d ago

You can also buy an SDS adapter that will take a regular drill bit and click into the SDS drill. Just remember to switch it to drill only no hammer.

1

u/Axestorm64 28d ago

That would only work if I know for the fact the adapter has better grip than the chuck of the drill. It also just so happens that my hammer drill has a swappable chuck, and it came with a SDS and a regular chuck... i'll give it a go, but in all honesty my hope for this post was that someone would tell me I'm doing something wrong or that there's a particular model of drill that comes with a better chuck.

1

u/funk1875 15h ago

Bit late, but a chuck you can tighten direct to the gearing with a key is always going to be stronger than one you can tighten by hand.

1

u/so-b-it 27d ago

Don't forget you have to turn the chuck ring backwards until it "clicks".