42" Blanchard Rotary Surface Grinder, Model 18-42 Specifications: Chuck Diameter 42" Swing Inside Guards 48" Height Under New Wheel 18" Maximum Load on Table 2,000 Lbs. Grinding wheel Diameter 20" Wheel Speed 720 Rpm Chuck Speeds (6) 6, 9, 12, 18, 25, 33 Rpm Downfeed Rate .004" to .080 Ipm variable Motor 40 Hp 220/440v Weight, Approx. 13,000 Lbs. Equipped With: 20" Segmented Grinding Wheel Electromagnetic Chuck & Rectifier Coolant in Base Power Elevation Power Rapid Traverse on head Wheel Dresser