OPERATOR’S MANUAL 12 in. (305 mm) DRILL PRESS MODEL DP120 1 2 Drill Pre ss ON THANK YOU FOR BUYING A RYOBI BENCHTOP DRILL PRESS. Your new Drill Press has been engineered and manufactured to Ryobi's high standards for dependability, ease of operation, and operator safety. Properly cared for, it will give you years of rugged, trouble-free performance. CAUTION: Carefully read through this entire operator's manual before using your new machine.
TABLE OF CONTENTS ■ Product Specifications ......................................................................................................................................................2 ■ Rules for Safe Operation .............................................................................................................................................. 3-5 ■ Electrical ..................................................................................................................................
RULES FOR SAFE OPERATION ■ PROTECT YOUR HEARING. Wear hearing protection during extended periods of operation. Safe operation of this power tool requires that you read and understand this operator's manual and all labels affixed to the tool. Safety is a combination of common sense, staying alert, and knowing how your tool works. ■ SECURE WORK. Use clamps or a vise to hold the work when practical. It’s safer than using your hand and frees both hands to operate the tool.
RULES FOR SAFE OPERATION WARNING: ■ ALWAYS TURN SWITCH OFF before disconnecting it to avoid accidental starting. Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are: • lead from lead-based paints, • crystalline silica from bricks and cement and other masonry products, and • arsenic and chromium from chemically-treated lumber.
RULES FOR SAFE OPERATION The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and the explanations with them, deserve your careful attention and understanding. The safety warnings do not by themselves eliminate any danger. The instructions or warnings they give are not substitutes for proper accident prevention measures. SYMBOL MEANING SAFETY ALERT SYMBOL: Indicates danger, warning, or caution. May be used in conjunction with other symbols or pictographs.
ELECTRICAL EXTENSION CORDS ELECTRICAL CONNECTION Use only 3-wire extension cords that have 3-prong grounding plugs and 3-pole receptacles that accept the tool's plug. When using a power tool at a considerable distance from the power source, use an extension cord heavy enough to carry the current that the tool will draw. An undersized extension cord will cause a drop in line voltage, resulting in a loss of power and causing the motor to overheat.
GLOSSARY OF TERMS Base Large rectangular plate that secures the drill press to a benchtop or other sturdy, level surface. Feed Handles Three handles attached to the quill which allow the operator to lower the chuck and bit during a drilling operation. Chip The material extracted from the hole in a drilling operation. Motor Pulley A grooved, conical pulley driven by the motor and responsible for driving the spindle pulley by means of a belt.
LOOSE PARTS Check all loose parts with the list below. Assemble according to the instructions on the following pages.
FEATURES KNOW YOUR DRILL PRESS FEED HANDLES See Figure 3. Before attempting to use your drill press, familiarize yourself with all the operating and safety requirements. Feed handles raise and lower the chuck and bit during the drilling operation. BELT TENSION LEVER Equipped with an industrial duty, induction motor for long lasting, smooth performance. MOTOR The belt tension lever is used to release or tighten belt tension.
ASSEMBLY TABLE WARNING: 0 0 40 30 20 10 Do not connect to power supply until assembly is complete. Failure to comply could result in accidental starting and possible serious injury. 10 20 30 40 ATTACHING THE COLUMN ASSEMBLY See Figure 4. ■ Place base on a flat surface. Align screw holes in the column support with screw holes in the base. ■ Place a hex bolt in each hole and tighten using an adjustable wrench. ■ Loosen the set screw in the column support.
ASSEMBLY INSTALLING THE IDLER PULLEY See Figures 7 and 8. ■ Place idler pulley in the center hole in the head assembly. Fit one belt over the spindle pulley and the idler pulley and the other belt over the motor pulley and the idler pulley. Tighten the belt tension lever and the two belt tension screws. See Figure 7. ■ Fit the spindle into the spindle shaft turning it to the right until it slips into place. See Figure 8. ■ To install the chuck raise the table using the table adjustment handle.
ADJUSTMENTS WARNING: Before performing any adjustment, make sure the drill press is unplugged from the power supply and the switch is in the OFF position. Failure to heed this warning could result in serious personal injury. ADJUSTING TABLE HEIGHT HEX BOLT See Figure 11. ■ Hold the table with one hand then loosen the table lock handle. ■ To raise the table, turn the table adjustment handle clockwise. ■ To lower the table, turn the table adjustment handle counterclockwise.
ADJUSTMENTS ■ Open the head assembly cover and reposition the belt according to the speed chart. Close the cover. ■ Push the belt tension lever firmly back into position assuring drive belt is tight. While holding tension on the motor, retighten the two belt tension knobs securely. CHANGING SPEEDS See Figure 14. WARNING: Before performing any adjustment, make sure the drill press is unplugged from the power supply and the switch is in the OFF position.
OPERATION INSTALLING BITS See Figure 16. ■ Unplug your drill press. ■ Open or close the chuck jaws to a point where the opening is slightly larger than the drill bit you intend to use. ■ Insert drill bit into chuck the full length of the jaws. ON WARNING: Do not insert drill bit into chuck jaws and tighten as shown in figure 16. This could cause drill bit to be thrown from your drill resulting in possible serious personal injury or damage to your chuck.
MAINTENANCE LUBRICATION WARNING: The ball bearings in the quill and V-belt pulley are permanently lubricated. To lubricate the spindle, pull quill down to maximum depth and oil moderately once every three months. Oil all slide bars lightly every two months. If cranking becomes difficult, grease bracket lightly. When servicing use only identical Ryobi replacement parts. Use of any other parts may create a hazard or cause product damage.
TROUBLE SHOOTING Problem Noisy operation Bit burns or smokes Excessive drill runout or wobble Drill bit binds in workpiece Workpiece support loosens Possible Cause Solution Incorrect belt tension. Adjust belt tension. Dry spindle. Lubricate spindle. Loose spindle pulley or motor pulley. Tighten set screws in pulleys. Incorrect speed. Change speed. Chips not coming out of hole. Retract bit frequently to clear chips. Dull bit. Sharpen or replace bit. Feeding too slow.
NOTES NOTES 17
OPERATOR'S MANUAL 12 in. (305 mm) Drill Press Model DP120 EXTENSION CORD CAUTION **Ampere rating When using a power tool at a considerable distance from a power source, be sure to use an extension cord that has the capacity to handle the current the tool will draw. An undersized cord will cause a drop in line voltage, resulting in overheating and loss of power. Use the chart to determine the minimum wire size required in an extension cord. Only round jacketed cords should be used.
