... Copper, Electric Utilities, Oil Shale, Water & Sewage Utilities, Building areas, Coal, Sand & Gravel, Tobacco, Agriculture (hog, poultry, dairy manure), etc. ... type.Shaft and Bearing Assembly A large diameter shaft with a short overhang minimizes deflection and vibration. Heavy-duty ... Shaft sleeve A hardened, heavy-duty corrosion-resistant sleeve with O-ring seals at both ends protects the shaft. ...