Chart: Belt Weights
2″x72″ grinding belts are the workhorse of modern blade grinding. You might notice the letter codes that are associated with these belts. Here’s how I translate the codes (additions or corrections welcome):
Letter Code | Material | Weight | Stiffness |
JE | Rayon | Very Light | Extremely Flexible |
JF aka J-Flex | Cotton | Light | Very Flexible |
J | Cotton | Light | Flexible |
XF aka X-Flex | Cotton | Heavy | Somewhat Flexible |
X | Cotton | Heavy | Stiff |
YX | Polyester | Light | Stiff |
Y aka YY | Polyester | Heavy | Very Stiff |
E | Paper | Heavy | |
F | Paper | Very Heavy |