Surface grinder is similar to centered grinding except that there is no spindle. STP-1428AD STP-2040CII Surface grinder is easy to operate and equip a special mechanism for step inner hole grinding (blind hole), such as screw mold. All essential castings are rib reinforced to provide a riged machine structure for long lasting accuracy and stability. The precision cartridge spindle equipped with 4 pieces of preloaded class 7 (p4) super precision angular contact ball bearings to ensure high accuracy and superior grinding finish. Mitsubishi PLC control uses a menu-driven LCD touch screen is easy to learn and easy to set. Simply fill in the blanks to set total grinding amount, rough increment, fine increment, spark out passes, feeding direction, parking position, wheelhead retract distance, and press cycle start to complete automatic grinding cycle. (ADCII model only) All slideways are Turcite-B coated and precisely hand scraped to provide a smooth movement for better accuracy and longer way life grinder. This allows high through-put since parts can be quickly inserted and removed from the process surface. In conventional processing procedure, the outer diameter of a ferrule is ground by employing a special machine tool, i.e. Surface grinders STP-1428AD STP-2040CII for grinding an elongated workpiece includes a grinding wheel having a working surface with a plurality of raised areas