Jump to content
I Forge Iron

homemade belt grinder


Recommended Posts

This seems like another "how long is a piece of string" question.

Given you don't have a welder, if you purchase all the parts new and then pay someone to fab up the necessaries, it could easily cost more than a store bought unit.

However, if you are crafty and good at scavenging the parts can cost very little.


I am in he middle of collecting up the pieces for a large ( 6" wide x  24") long belt sander. It will be used more for woodwork but I will also use it a lot for metal work.

- 1" diam steel shafts and two of the pillow block bearings I got for nothing from a friend, the other two bearings I stripped off a machine I found in a dumpster. 

- aluminium drive roller/drum I had my BIL fab up for me from a 4" diam x 9" long piece of ally pipe

- other rollers  are scavenged at no cost from a railway line grinding machine

- 2HP 3phase motor cost me $35 from the online classifieds.

- motor has the right pulley on it and I bought another pulley for $10 from ebay.

- frame is going to be made of 1.5" x 1/8" SHS which I have pieces left over from another project

One thing I have  spent serious money on is a box of electronics, a new variable speed drive (VSD) which enables the 3phase motor to run off single phase as well as providing speed control but even this cost only $120 delivered.


I already have a small but handy metal shop with a small metalworking lathe, 170A welder, 4 grinders, metal cutting bandsaw, Floor standing drill press etc, so putting this together should not be too difficult. I also have access to a shop with  mills and other larger metal working gear. I have experience with installing 3 VSDs.  Building a belt grinder without these would be quite  challenging.


I hope this gives you a few ideas but hopefully someone who has more direct experience with a dedicated belt grinder for metal will respond.

Link to comment
Share on other sites

If you want to build a grinder with out welding look into the NWG (No Weld Grinder) plans at www.usaknifemaker.com.  I have copies of the plans for sale for $25.00.

You could look at the GIB (Grinder In a Box) at www.polarbearforge.com.

The NWG uses step pulleys for "adjustable" speed, not true "variable" speed.

The GIB is a direct drive machine and with a VFD for variable speed is a great machine.

I supply motors and VFDs for both of these machines.

Let me know if I can help you further.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...