FEATURES : * A two head wide belt metal sander. Available to equip with polishing roller for greatly upgrading sanding efficiency. * Coolant system provides fast cooling during sanding. * Available to equip with a blower for removing the coolant existed on the workpiece surface. *The machine frame that contact with coolant are stainless steel plates for rust-free. * Equipped with coolant circulation filter. * Sanding belt tension is pneumatically operated. * Sanding belt oscillation track is controlled by photocell sensor, which is well guarded to avoid pollution by coolant or dust. * Automatic adjustment for conveyor belt tracking. * In case sanding belt break or runs out of its track range, the machine brakes instantly. * Powered working thickness adjustment is controlled by digital position controller, also can be manually operated. * Variable feed speed suits to various type of metal plates.