How to remove / install hammer drill bits from SDS adapter

[CajunMan89]

Can anyone tell me how to remove / install hammer drill bits from an SDS adapter? Someone once told me I needed a tool to do it, but I don't seem to have one with my bits, and I don't know what it would look like.

Pictured is one of my bits within an adapter and one without, for reference.

Thanks in advance!

 

[hefnerconstructionlc]

On models that are relatively new see within the last 15 years it's just a collar that you push down and that thing releases. Not sure about a super old one may require a tool

 

[snakeeyes]

Looks kind of like drill press bits that have a tapered shaft. Does any part of the bit show in the hole of the adapter. If so you could use a tapered pin/spud to loosen the bit. Or you could try putting the bit in a vice and using a punch to hit the adapter off.

 

[KnurledNut]

Those bits are called "A taper". Long obsolete technology now, but they are still manufactured as the rotary hammers still exist. Milwaukee made a good one. (There was also a B taper.)
That is an adaptor to convert A taper to SDS. (There is also an A taper to spline adaptor.) They are sold with a tapered wedge removal tool. You could make one out of round stock or a pin punch cut an an angle.
I have the SDS adaptor and some of these bits but don't feel like digging them out to take a picture.

McMaster Carr still sells the adaptors with the proper removal tool as well as A taper bits.

https://www.mcmaster.com/product/2813A53

https://www.mcmaster.com/products/a-taper-masonry-drill-bits/

 

[CajunMan89]

Those bits are called "A taper". Long obsolete technology now, but they are still manufactured as the rotary hammers still exist. Milwaukee made a good one. (There was also a B taper.)
That is an adaptor to convert A taper to SDS. (There is also an A taper to spline adaptor.) They are sold with a tapered wedge removal tool. You could make one out of round stock or a pin punch cut an an angle.
I have the SDS adaptor and some of these bits but don't feel like digging them out to take a picture.

McMaster Carr still sells the adaptors with the proper removal tool as well as A taper bits.

https://www.mcmaster.com/product/2813A53

https://www.mcmaster.com/products/a-taper-masonry-drill-bits/

Thanks so much for the information and links!
Forgive my incompetence, but I've never worked with masonry bits. I found these pieces this morning and wondered if they might be a removal tool?

If not, how would I use one like included in the link you provided? Just insert in the side hole of the adapter and turn it?

 

[CajunMan89]

Looks kind of like drill press bits that have a tapered shaft. Does any part of the bit show in the hole of the adapter. If so you could use a tapered pin/spud to loosen the bit. Or you could try putting the bit in a vice and using a punch to hit the adapter off.

I can see just the bottom of the bit when looking through the side hole of the adapter. Tried everything I know how including tapping on an Allen wrench to get it to come out with no luck.

 

[DAWrench]

Put the taper wedge in hole and tap with a hammer

 

[KnurledNut]

Thanks so much for the information and links!
Forgive my incompetence, but I've never worked with masonry bits. I found these pieces this morning and wondered if they might be a removal tool?

If not, how would I use one like included in the link you provided? Just insert in the side hole of the adapter and turn it?

If they fit they should work.
Those removal tools are typically called taper drifts. Just hammer it in and the incline drives the bit out. They can get stuck pretty good because they are hammered in during use.

Mine is a little different style, but works the same.

 

[CajunMan89]

I tried letting some penetrating oil work on them overnight, then try tapping them out. They never budged. Might have to just buy some new adapters.

 

[frankthezapper]

Don't tap them....HIT them!

 

[mike93lx]

Unless you have some massive assortment of free hammer drill bits, i wouldn't buy any adapters. Just get the proper size Sds bits. Dealing with these shenanigans isn't worth it with how available the proper bits are

 

[KnurledNut]

I missed something when I first replied to this thread because I was focused on the A taper adaptor.

The top bit in @CajunMan89 picture at first looks like a SDS+ bit. But it is not. That is the connection Hilti invented that preceded it, the TE-D system, which bits Hilti called Hol-Fast. The two opposing keyway slots of SDS+ were not present In this design. Bosch improved on this design with the release of the SDS system. They both use a 10mm ø.

 

[KnurledNut]

Unless you have some massive assortment of free hammer drill bits, but buy any adapters. Just get the proper size Sds bits. Dealing with these shenanigans isn't worth it with how available the proper bits are

Agree, could be sentimental though.

 

[mike93lx]

Agree, could be sentimental though.

Sentimental drill bits are a new one for me

 

[CajunMan89]

Don't tap them....HIT them!

Tap may have been the wrong word LOL! Tried that, as well a heated with a propane torch and tried removing with a pipe wrench. All that and it just cracked the adaptor. The bit's still in tight! Oh well.

 

[CajunMan89]

Agree, could be sentimental though.

You hit the nail right on the head! I'm just an amateur DIYer. My late father was a construction worker and carpenter from the 70's until he passed in '01. Just trying to go through all his tools and see what's worth fixing or not. I repaired his Bosch Bulldog for less that $20!