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75mm x 2000mm Belt Linisher Build Thread

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Vic17/07/2021 17:10:24
2912 forum posts
8 photos

I find threading anything over 8mm a bit of a chore Martin. The last thread I cut was M6 and the finish on steel was rubbish so I bought a new Die. Looking good so far, keep going. wink

Martin King 217/07/2021 17:45:21
860 forum posts
362 photos

Hi All,

Thanks for the interest!

I have gone the route of drilling and tapping the holes M12 and loctiting in a piece pf pre drilled M12 Cap Screw which I will open up to M10 x1 (Fine) to take the plunger. Have centre popped the underside edges to make really sure it does not move.

The bolt material is pretty hard so if the tapping proves a problem I will go the "top hat" route as suggested.

Why I did not think of a helicoil I do not know! Maybe because I have never actually used one!

I knew this project would be a good learning experience and so it is turning out!

Cheers, Martin (KBO)

Martin King 219/09/2021 17:08:05
860 forum posts
362 photos

HiAll,

Been busy away from this project for a while but have just done these pieces:

linisher 13.jpg

linisher 14.jpg

Made the axles from 25mm 304 stainless which was hard work, finally got the speed and feed about right (600rpm) to get a good finish. Got to "nearly there" then finished off with emery cloth for a nice fit on the bearings.

The M16 threads were hard work and had to use a diameter of 15.5mm in order to get the die to cut OK in low speed and back gear. Constant fwd & rev a bit at a time.

The stainless seems to work harden if you are not pretty aggressive with the cuts.

The threads are no oil painting for sure but they will be OK!

Slots in the brackets were a breeze in aluminium after the SS! Will round off the corners later on. It would be nice to have a linisher to do it on! smiley

Next job is the pullies.

Cheers, Martin

Martin King 225/09/2021 15:41:55
860 forum posts
362 photos

Hi All,

Finished the two platen pullies with pressed in bearings, fairly easy this one!

linisher 16.jpg

linisher 15.jpg

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