KayakWilderness
Member
Just finished my NWG after ordering the plans a couple of weeks ago. Top SFPM is around 6800. While running at that speed the 2 contact wheels (2" and 3") get around 145 F. That reading is actually from the bolt holding the wheels on so actual bearing temp I assume is slightly higher. Seems to be working well but would like some assurance that this temp is not damaging the bearings. The bolt holding the wheel is not torqued too tight - wheels spin very freely. Can't wait to start grinding knives with this thing - really eats up the metal compared to my old grinder! Any advice would be appreciated - thanks.