Trizact 337DC vs 347FC

[tyyoda]

Can anyone help me understand the difference between the 3M Trizact 337DC and the 347FC belts?  I've done a google search and looked at 3M's info and found the following.  What should I know?  I'm in the process of buying belts for my new Viel S5 grinder (coming on Tuesday) that I'm putting on a 1/2 HP 1750/1140 rpm motor on.  Plan to run at 1140 rpm to give me 1790 sfpm belt speed to sharpen knifes.  Currently using a Ken Onion Blade attachment.  Time to join the "bigboy" party (lol) and please be kind to this newbie.


337DC
Equipment - Machines
Bench Top Motors, Manual Backstand, Pressure Assit Backstand
Flex Type
No Flex
For Use On
Aluminum, Carbon Steel, High Nickel Alloy, Soft Metals, Stainless Steel, Titanium/Zirconium
Industries
Marine, Metalworking
Micron Grade
Micron Grade, A160, A300, A45, A65


347FC
Equipment - Machines
Cylindrical Grinders, File Belt Sanders, Manual Backstand, Pressure Assit Backstand, Random Orbital Sanders
For Use On
Carbon Steel, High Nickel Alloy, Stainless Steel, Titanium/Zirconium
Industries
Metalworking
Micron Grade
Micron Grade, A160, A30, A300, A45, A65