Model LMP-3S LMP-3 LMP-4S LMP-4 Quantity of disc 2 1 2 1 Disc size standard size 250mm, can be customized 230mm, 300mm Disc rotation speed variable speed 50-1000rpm, 400/600/800/1000 four fixed speed Variable speed 50-1000rpm, 300/600/900rpm three fixed speed Disc rotation direction clockwise and counterclockwise Control method Standard double disc single control, can be customized double disc double control Disc detail Aluminum material, rapid change type consumble magnetic system, with magnetic plate, metallographic sandpaper , polishing cloth, buckle ring for fix polishing cloth Control method LCD touch screen control Water cooling system Brass material with chrome plated surface, strong corrosion resistance Safety With E-stop button at side of the machine Polishing head preasure display dial disply , adjust range 0-0.7Mpa, factory set at 0.2Mpa LCD display, adjust range 5-70N Head speed variable speed 5-150rpm Quantity of specimen 6 4 6 4 Specimen dia. standard 30mm, can be customized 22mm, 45mm