2 Speed Drill / Mill Machine Model 42976 Assembly & Operating Instructions www.HarborFreight.com Copyright 2000 by Harbor Freight Tools®. All Rights Reserved. No portion of this manual or any artwork contained herein may be reproduced in any manner, shape or form without the express written consent of Harbor Freight Tools. For technical questions and replacement parts, please call 1-800-444-3353.
SPECIFICATIONS Motor: 120V/60Hz Single Phase Drill Capacity: 1/2 HP, 8.5 Amps with Load Face Mill Capacity: 12 Speeds (rpm): 300-400-540-720-900End Mill Capacity: 1040-1500-1740-2100-2260-3100-3840 Max. Chuck to Table: Motor rpm’s: 1700 Column Diameter: Drive Type: V-belt / Pulley Table Slots: Spindle Taper: MT-2, Diameter: 1.265” Head Rotation: Spindle Stroke: 3-3/8” Net Weight: 4, 5 and 6mm Hex Wrenches Drift Pin Drill Chuck 5/8” 1-1/2” 5/8” 10” 2.830” 1/2” x 2 360O 470 Lbs.
SAFETY WARNING & CAUTIONS READ ALL INSTRUCTIONS BEFORE USING THIS TOOL! 1. KEEP WORK AREA CLEAN. Cluttered areas invite injuries. 2. OBSERVE WORK AREA CONDITIONS. Do not use tools in damp, wet, or poorly lit locations. Don’t expose to rain. Keep work area well lit. Do not use electrically powered equipment in the presence of flammable gases or liquids. 3. KEEP CHILDREN AWAY. Children must never be allowed in the work area. Do not let them handle machines, tools, or equipment. 4. STORE IDLE EQUIPMENT.
14. STAY ALERT. Watch what you are doing. Do not operate this machine when you are tired. 15. DO NOT OPERATE THIS MACHINE WHILE UNDER THE INFLUENCE OF ALCOHOL, DRUGS, OR PRESCRIPTION MEDICINES. 16. CHECK FOR DAMAGED PARTS. Before using any tool, any part that appears damaged should be carefully checked to determine that it will operate properly and perform its intended function.
FEATURES AND CONTROLS OF THE #42976 DRILL / MILL MACHINE 16 15 28 13 14 17 28 6 5 8 4 11 7 12 18 10 3 19 1 9 2 3 9 22 20 20 26 23 26 25 25 24 21 1. Column 2. Gear Strip 3. Head Crank 4. Vertical Head Lock 5. Chuck Feed Lever 6. Chuck Travel Limit Screw 7. Reference Scale 8. Chuck Fixing Lever 9. Chuck 10. Chuck Spindle Page 5 SKU # 42976 11. Chuck Spindle Collar 12. Motor 13. Drive Belt Cover 14. Motor Pulley 15. Transfer Pulley 16. Drive Pulley 17. Drive Belt Tension Lever 18.
1. 2. 3. 1. 2. 3. 1. 2. 3. 4. 5. 1. 2. 3. UNPACKING AND INSTALLATION Remove protective crating and skids carefully. In the event of damage in transit, contact Harbor Freight Tools immediately. The machine is carefully inspected and tested in operation before it leaves the factory. If any defects are found on delivery, contact us immediately.
EXTENSION CORDS Note: Performance of this tool may vary depending on variations in local line voltage. Extension cord usage may also affect tool performance. Your tool has a three-prong plug, therefore you must use a three-prong extension cord. Only use rounded jacket extension cords listed by the Underwriters Laboratories (UL). Improper use of extension cords may cause inefficient operation of your tool which can result in overheating.
BASIC OPERATION For reference numbers mentioned in these instructions, please see page 5. WARNING: Unplug the drill from its power source before changing bits or attempting any repairs, adjustments or maintenance. Basic Controls 1. Raise and lower the Head by using the Head Crank (#3). 2. Feed the Chuck (#9) using the Chuck Feed Lever (#5). Chuck movement may be limited using the Chuck Travel Limit Screw (#6). 3. Move or feed the Table from side to side using either Horizontal Feed Control Wheels (#20). 4.
Preparing for Drilling 1. The Chuck (#9) is installed on the Spindle (#10) using a Morris Taper. This is a self-centering design. 2. Rotate the Chuck Fixing Lever (#8) counterclockwise to loosen the Spindle for vertical travel. 3. You can move the Spindle and Chuck vertically by operating the Chuck Feed Lever (#5). 4. Vertical movement of the Chuck and Spindle can be limited by setting the Chuck Travel Limit Screw (#6). A Reference Scale (#7) indicates the relative travel of the Chuck. 5.
Preparing for Milling 1. Loosen the Chuck Travel Limit Screw (#6). 2. Install the cutting bit needed to perform the intended milling operation. 3. Using the Chuck Feed Lever (#5), adjust the bit to approximately the correct height. Tighten the Chuck Fixing Lever (#8). 4. Set the final vertical adjustment using your milling jig or fixture (not included) or the included 70O precision vise. 5. Set the horizontal adjustment using the Horizontal (#20) or Cross Feed Control Wheels (#21). 6.
The machine doesn’t run when the power switch is turned ON. 1. The power cord is not plugged in. 2. The chuck spindle may be bound by the workpiece, cutting bit or fixture. 3. If there is a surge in the current, the circuit breaker may have opened. Press the circuit breaker back in, if it is in the open position. 4. The belt tension may not be tight. Adjust the tension lever and lock it in place. The spindle bearing is very hot. 1. There is insufficient lubrication.
MAINTENANCE After each use: 1. Turn off the power switch and unplug the machine from its power source. 2. Remove any tool bits, clean and lubricate them, and return them to their storage case. 3. Using a stiff bristle brush, brush off all chips and shavings left from the machining operation. 4. Using a rag, wipe off any excess or dirty oil or cutting fluid left on the machine. 5. Lubricate geared, moving and machined metal parts. Apply light grease or oil to all unpainted metal to prevent corrosion. 6.
DRILL / MILL MACHINE, TABLE AND BASE PARTS LIST Please refer to Parts Diagram on Page 14.
#42976 DRILL / MILL MACHINE, TABLE AND BASE PARTS DIAGRAM Please refer to Parts List on Page 13. Note: Parts for optional Stand are shown but not included with the Drill / Mill machine.
P/N 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 #42976 DRILL / MILL MACHINE, HEAD PARTS LIST Please refer to Parts Diagram on Page 16 Description Quantity P/N Description Body 1 104 Headless Set Screw Screw 2 105 Nut Shifter Bar 1 106 Nut Pin 1 107 Slide Bar Pin 1 108 Pulley Cover Feed Shaft 1 109 Washer Pin 1 110 Screw Scale Ring 1 111 V-Belt Handle Body 1 112 Nut Scale 1 113 Spindle Pulley Screw 1 114 Spring Sleeve Handle Bar 3 115 Retai
#42976 DRILL / MILL MACHINE, HEAD PARTS DIAGRAM Please refer to Parts List on Page 15.