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All Replies on Sloppy Chuck Key: Bosch Hammer Drill - Solution?

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View Underdog's profile

Sloppy Chuck Key: Bosch Hammer Drill - Solution?

by Underdog
posted 02-14-2017 04:01 PM


8 replies so far

View tyvekboy's profile

tyvekboy

1924 posts in 3521 days


#1 posted 02-14-2017 07:26 PM

I don’t know if this would work but how about slipping a piece of sheet metal material in each hole in the chuck in which the key would fit. That might make it fit better.

You might also try to put some JB Weld on the post of the chuck key and file it down to fit the hole after it hardens.

-- Tyvekboy -- Marietta, GA ………….. one can never be too organized

View dhazelton's profile

dhazelton

2839 posts in 2804 days


#2 posted 02-14-2017 07:35 PM

Have you tried another key? I’d just take the drill to a tool place and try some universal keys and see if you get a tighter fit. Maybe you have a drill press key you could try. You shouldn’t have to spend any extra but it is what it is at this point.

View Underdog's profile

Underdog

1402 posts in 2543 days


#3 posted 02-14-2017 07:49 PM

I guess my question is more about whether I can prevail upon Bosch to correct their sloppy design. I figure I’m pretty much stuck with what I have, but what about future purchasers?

-- Jim, Georgia, USA

View mrbob's profile

mrbob

182 posts in 1076 days


#4 posted 02-14-2017 07:53 PM

Maybe it is not the key, but over size holes?

View Underdog's profile

Underdog

1402 posts in 2543 days


#5 posted 02-14-2017 07:54 PM



Maybe it is not the key, but over size holes?

- mrbob


It is one or the other….

-- Jim, Georgia, USA

View mrbob's profile

mrbob

182 posts in 1076 days


#6 posted 02-14-2017 08:14 PM


Maybe it is not the key, but over size holes?

- mrbob

It is one or the other….

- Underdog

I guess I was not clear, that even a non Bosh key would do the same if the holes are oversized.

View Underdog's profile

Underdog

1402 posts in 2543 days


#7 posted 03-16-2017 05:00 PM

Well well well.
I received a new key from Bosch, but that didn’t fix it because it was exactly the same as the original (minus the black oxide).
Whilst I examined the problem I discovered that the reason the key was slipping was because the teeth on the chuck weren’t cut completely through to the inside barrel, which prevented the teeth on the key from completely engaging…

So I called Bosch back, and they agreed to send me a new chuck, which I received today, after ordering it a second time. Hence the tremendous time gap between my last post and this one…

And LO and BEHOLD, the new chuck teeth were cut all the way to the inside barrel, allowing all three keys to bottom out and engage the chuck teeth properly.

-- Jim, Georgia, USA

View Underdog's profile

Underdog

1402 posts in 2543 days


#8 posted 03-16-2017 05:19 PM

-- Jim, Georgia, USA

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