Take a piece of the scrap from the bar and test the belt with that. In normal grinding, you use moderate pressure to grind the bevels. Start with a few light passes, to get your position and angle right, and then repeat with more pressure to take off the metal.
Warning - a 60 grit Norton belt will remove steel fast. It will also remove skin even faster. Try and avoid any contact between your hands an that belt. I rarely use a 60 grit belt for smaller blades. On blades with a 3-4" edge, I start with a 120 grit Blue Zirc belt and cut the bevels in a couple of passes.
Second warning - If your grinder is a single speed unit, that speed is pretty fast. It can pull the blade out of your fingers in a flash, and will heat up the blade to a point where it is too hot to hold in a second or two. Dip in water every pass, and use a push stick or a grinding magnet to support your blade. I use a 9" or 5" grinding magnet to hold most of my blades when grinding bevels.
Third Warning - Some grind free-hand, and others use a work rest. If you use the work rest, make sure you adjust it so it sits just clear of the belt, but with a minimum of gap. A work rest that "wraps" around the belt is best. These have a "slot" ground into the rest so the side arms go past the belt .