Questions about the belt sander

[Metalgeria]

Hello guys, i'm planning to make a belt sander with this high speed motor (5500 rpm) and my question is, Can i use this motor for the belt sander?
Thank you for your reply.

[bruce.desertrat]

These people have a explainer on calculating the appropriate speed for a belt grinder belt: https://www.redlabelabrasives.com/bl...a-belt-grinder

I suspect 5500 RPM is quite a bit too high for direct drive, you might need to add a speed reducing pulley set between the motor and belt driving wheels to bring it down in speed.

[Metalgeria]

Thank you very much

[lonestarr007]

Hello guys, i'm planning to make a belt sander with this high speed motor (5500 rpm) and my question is, Can i use this motor for the belt sander?
Thank you for your reply.

Hi The motor looks like a gear up to the posted speed ....I find 3600 rpm motor speed is best for me.. remove the gear drive and see if you have enough torque....If you want to grind metal you need horse power so I am not sure this motor is right for your application... hope this helps.

[Saltfever]

I use 4,000 FPM +/- 1,000 FPM depending on variables (i.e., material, grit, abrasive binder, etc). Equally important is 1 hp per inch of belt width. (i.e., 2" belt width = 2 hp). That is a professional value and you will never be disappointed. You will see lower horsepower numbers but you certainly don't hear the disappointment with all the 1/2 hp systems out there. 50 years ago the owner of Burr King (manufacturer of Industrial grinders) gave me that horsepower parameter and he was right!

[Toolmaker51]

These people have a explainer on calculating the appropriate speed for a belt grinder belt: https://www.redlabelabrasives.com/bl...a-belt-grinder

I suspect 5500 RPM is quite a bit too high for direct drive, you might need to add a speed reducing pulley set between the motor and belt driving wheels to bring it down in speed.

I agree, 5500 RPM and potential wheel diameter will verge on astronomical FPM, versus reduction available attached to the motor. I can't read French, but if there is sufficient power, a variable ratio is a good option for a sander/grinder.

[Metalgeria]

Hi, i already did that and i found that it contain 2 pulleys and belts to increase speed and yes the motor has 2400 rpm with a 1.5 hp. And i think that this helps, thank you!

[Saltfever]

It seems like you have a good motor to start with. If you add a VFD, to dial in variable rpm, you will have a good solution for most materials. I have the chart below posted next to my machine. (FPM x .3048 = MPM)
All the best,

Belt Grinder SFM

Material	FPM
Acrylics	960 - 2700
Glass, Ceramics, & Stone	1560 - 2700
Lacquers & Varnishes	1560 - 2940
Hard & Hardened Steel	1560 - 2940
Plastic & Rubber	1920 - 3540
Titanium & Titanium Alloys	1920 - 4920
Wood	2940 - 4920
Aluminum & Zinc	3540 - 5880
Stainless, Tool Steel, & HS Steel	3540 - 5880
Copper & Brass	4920 - 6840
Cast Iron & Carbon Steel	4920 - 8820

[Metalgeria]

Thank you very much!