SHARP RD820 RADIAL ARM DRILL, 3 HP, 33.5 INCH ARM, 1500 RPM, 8.29 INCH COLUMN, MT#4 SPINDLE

Technical Description

THE SHARP RD-820 IS A HEAVY-DUTY RADIAL ARM DRILL PRESS ENGINEERED FOR DRILLING, TAPPING, BORING, AND REAMING OPERATIONS. IT FEATURES AN 8.29-INCH COLUMN DIAMETER AND A 3 HP MAIN SPINDLE MOTOR WITH A MT#4 SPINDLE TAPER. THE MACHINE PROVIDES A MAXIMUM DISTANCE OF 33.46 INCHES FROM THE COLUMN SURFACE TO THE SPINDLE CENTER AND A HEAD TRAVEL OF 25.2 INCHES. SPINDLE SPEEDS RANGE FROM 88 TO 1,500 RPM ACROSS 6 STEPS, WITH A SPINDLE STROKE OF 8.27 INCHES. THE ARM ELEVATION IS POWERED BY A 1 HP ELECTRIC MOTOR, WHILE THE ARM, HEAD, AND COLUMN CLAMPING ARE MANUALLY OPERATED. PERFORMANCE CAPACITIES INCLUDE DRILLING UP TO 1.968 INCHES IN CAST IRON AND 1.259 INCHES IN STEEL, WITH BORING CAPACITIES OF 4.125 INCHES IN CAST IRON AND 2.75 INCHES IN STEEL. THE MACHINE'S CONSTRUCTION INCLUDES HARDENED AND GROUND ARM SLIDEWAYS AND GEARS, A SPRING-LOADED SPINDLE COUNTER-BALANCE SYSTEM, AND A SAFETY DEVICE TO PREVENT ACCIDENTAL ARM DROPS. STANDARD FEATURES COMPRISE A BOX TABLE WITH T-SLOTS AND DRAIN CHANNELS, AN INTEGRATED COOLANT SYSTEM, AND A WORK LIGHT. PHYSICAL DIMENSIONS ARE APPROXIMATELY 66 X 32 X 86 INCHES WITH A SHIPPING WEIGHT OF 3,080 LBS. IT OPERATES ON 220V OR 440V POWER AND INCLUDES AN AUTO-REVERSE FUNCTION FOR TAPPING.