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Looking for mortiser chuck key

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Forum topic by Rick_M posted 03-29-2017 08:53 PM 357 views 0 times favorited 6 replies Add to Favorites Watch
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Rick_M

10638 posts in 2218 days


03-29-2017 08:53 PM

Topic tags/keywords: mortiser mortising machine

A 1/2 hp Craftex mortiser was given to me but it’s missing the chuck key. A Rohm S2A chuck (metric) key seems to fit but is too short so I can’t be sure it’s the right size; it is a 12 tooth with 6mm pilot. The pilot hole on the mortiser chuck is 6mm so it’s probably the correct size. I called Busy Bee and they couldn’t tell me the key size and shipping from Canada is kind of expensive.

This is the same generic 1/2 hp mortiser sold by a bunch of companies like Grizzly, Jet, General, Harbor Freight, etc. I’m hoping they all use the same chuck key. If anyone knows or if anyone has one of these generic mortisers and would measure their chuck key it would help me out. Grizzly says theirs is 4mm but that is really small and I think they might be measuring the hex end.

Measurement “D” is 6mm

Mine is pretty much identical to this one:

-- http://thewoodknack.blogspot.com/


6 replies so far

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Hammerthumb

2796 posts in 1814 days


#1 posted 03-29-2017 08:57 PM

Looks very similar to an old Jet I use to have. Might want to give that a try Rick.

-- Paul, Las Vegas

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Rick_M

10638 posts in 2218 days


#2 posted 03-29-2017 09:18 PM

Thanks Paul, unfortunately Jet doesn’t know the size of their key.

-- http://thewoodknack.blogspot.com/

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Hammerthumb

2796 posts in 1814 days


#3 posted 03-29-2017 09:58 PM

Well that seems about right.

-- Paul, Las Vegas

View papadan's profile

papadan

3584 posts in 3207 days


#4 posted 03-29-2017 10:01 PM

HF has a 4 way drill key that has 4 different sizes and we know its Chinese made.

View mahdee's profile

mahdee

3828 posts in 1606 days


#5 posted 03-29-2017 11:29 PM

If you have one that fits it but is too short, cut the two wings just enough so it fits into the access box and use a “T pipe with slots on it to move the key. Welding it to a longer T is another option.

-- earthartandfoods.com

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Rick_M

10638 posts in 2218 days


#6 posted 03-30-2017 04:17 PM

Thanks guys, I think I got my answer elsewhere. The Jet looks like a match, it has a 6mm pilot pin. But I did verify they do not all use the same chuck even if they​ look the same. The Steelex had an 8mm pilot.

-- http://thewoodknack.blogspot.com/

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