woodworking bandsaw modifiying

Home Model Engine Machinist Forum

Help Support Home Model Engine Machinist Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

hobby

Project of the Month Winner!!!
Project of the Month Winner
Joined
Dec 5, 2009
Messages
510
Reaction score
47
Hi Guys, (gals),

I did some hobby machining, I needed to make a modification to my woodworking benchtop bandsaw.
one of my bearing blocks above the bandsaw table, got broken and I replaced it with a piece of delrin

100_3007.jpg


it worked for awhile, but soon started to wear down pretty quick, so it was time to redesign the saw guides all together, with a set of home made bearings to take the place of each block.

100_3013.jpg


Here are the individual parts that were fabricated.

100_3008.jpg


here is the adjustment screw from the back side to adjust in and out the bearing.

100_3012.jpg


Here is the original commercial bearing block holder,

100_3009.jpg


and here is one of the new bearings assemblies inserted into that holder.

100_3011.jpg


both assemblies out of the holder

100_3010.jpg


and now the assemblies in the holder and the whole unit back on the saw.
100_3111.jpg


It works very well, I don't have to tighten the blade extrememly hard anymore, because I allow the blade to be trapped inbetween the bearings, thereby it prevents blade drift considerably.

There are commercial bearing assemblies also, but since I like to do hobby machining as well, I mind as well make this a machining project.

Now one more very needed modification, this bottom thrust bearing is used to keep the blade from bending in, it is seen above the block holder.

100_3110.jpg


however when sawdust gets caught inbetween the bearing and shaft, it locks up and the back of the blade cuts into this bearing causing screaching and wear on the blade.

So I needed to make a unit that had it's bearing surface reversed, and allow the blade to ride against the circumfrence, of the bearing, rather than the face of it.

So I fabricated this,

100_3112.jpg


100_3113.jpg


Here it is alongside the original commercial bearing.

100_3114.jpg


I had to modify the direction of it's bearing, so a bracket was made to swing a new bearing up above the original location, so there was clearance for the new bearing to sit.

Here it is installed on the saw, to take the place of the old original bearing assembly.

100_3116.jpg


100_3117.jpg


100_3118.jpg


the top commercial bearing assembly is not giving any problems so I left it alone.

Here is the saw blade running against the original top of table bearing assembly.

100_3119.jpg


And here is the saw blade running with the new homemade bearing on the bottom of table bearing bracket assembly.

100_3120.jpg


It works well, in supporting the blade and by putting a "V" groove in the bearing the blade can track better as well.

This was a fun project to design and machine the parts for and assembly work.

Have fun in the shop.



...







 
An excellent modification: well thought out, well designed, well made and well explained. It will probably be the basis for lots of similar mods. Thanks for sharing.

Jim
 
Thankyou, Jim.
 
Back
Top