Chuck C Spanner

[rtcosic]

My recently acquired pillar drill has a 'keyless' chuck.

I need a C Spanner to tighten it.
Are these a universal size?
The chuck has no maker's name on it:

 

[Maker]

If you need a spanner to tighten a keyless chuck, it's not really keyless. If it doesn't tighten enough by hand, it's knackered.

Those holes are probably to stick a peg in to assist un-doing it, they have a tendency to really lock up if a drill bit binds in the work.

 

[pedrobedro]

Piece of round bar will give you a bit of oomph or a Posi screwdriver.

 

[badabec]

I've never needed to use a C spanner.

 

[RichardM]

I've never used anything to tighten, undoing occasionally yes and have thought of making a c spanner.

 

[Welderpaul]

They find they like to come undone if reversing, or using a LH drill. Worth a nip up with a small tommy bar or similar.

 

[Agroshield]

Be careful as C-spanners are available as both peg and pin.

They will be made to a DIN standard (1810B), and each one available will fit a range of diameters. The pin size should be standardised for a specific diameter range.

https://norelem.co.uk/medias/96650-04-Datasheet-35519-Hook-wrench-with-pin-DIN-1810B-en.pdf

 

[rtcosic]

It's fitted to a drill without a spindle lock.

It's in good condition.

Trying to hold the narrow upper knurled section with one hand, the main knurled part with the other, whilst holding up the drill bit with the little finger, doesn't make it easy to tighten.

Trying to tighten it enough for >5mm drill bits takes the skin off the hand holding the upper 'stationary' part.

I have to lower the quill to insert an old screwdriver into the slot to 'lock' the drill, then apply my efforts to the chuck.

Once I've drilled umpty-nine holes, I can't grip the chuck well enough to loosen it without recourse to 'tools'.

Thank you, @Agroshield this link should answer my question:

https://norelem.co.uk/en/Product-overview/Technical-accessories-and-equipment-for-the-production-environment/96000/Tools-workshop-supplies/Hook-wrench-with-pin-DIN-1810B/p/agid.35519

I prefer to use the correct tool, hence my question.

 

[frank horton]

I've started to convert my pillar drill to keyless....not that I like em but a lot less faf.....plus my original chack are done...
I bought these drill bits just to run with but will convert my exsisting stock of drills asap...thats as soon as I get 3phase for the mill....
try these drill bit....no need for a tight chuck as they have ground flutes .....

Pardon our interruption...

 

[Tom O]

I’m told you don’t put the drill in all the way when you’re tightening it up because it draws it in as it tightens.

 

[Agroshield]

Another option could be a strap wrench. Rubber or canvas (fabric) strap.

I wonder if anything like a mini oil filter wrench is on one of the 3DP sites.

A block of foam can be useful as a third hand, maybe more so when removing the bit than when installing it.