Harbor Freight Tools 44991 Drill User Manual
Contents
1. over cut which could damage the workpiece fixture or Work Table 5 Adjust the Working Table Longitudinal Feed Hand Wheel X Axis and the Cross Feed Y Axis Hand Wheel 5 into position for milling or drilling One step turn of the Hand Wheel moves the Work Table 0 03 mm one complete turn moves it 1 5 mm Remove any tools or obstacles from in and around the Work Table Turn the machine on Lift the Emergency Stop Switch 137 cover and pull button out If necessary adjust the Spindle speed with the Speed Control Knob 134 O o N D Begin milling or drilling Use the Operating Lever 58 to make large adjustments to the Spindle height For fine adjustments use the Fine Feeding Wheel 93 Refer to the ruler on the Vertical Support to determine drilling or milling depth Caution Keep hands and fingers clear of the working table and workpiece while the machine is in operation SKU 44991 Page 7 10 When the drilling or milling is completed press in on the Emergency Stop Switch and close its cover 11 Unplug the line cord from the electrical outlet and clean the machine of all debris Maintenance Caution Avoid injuries or damage to equipment Before performing any maintenance on this machine unplug the power cord from the electrical outlet Lubrication Requirements 1 Using a light oil and clean cloth after each use wipe down all metal parts of the machine to prevent rusting 2 Using machine lubrication grease peri2. CT OR REPLACEMENT PARTS THERETO OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO SKU 44991 Page 8 Part Name Parts List Part Q ty tem No Name Base Cap screw M6 x 25 2 X axis feeding screw 1 39 Fuselage seat 2 1 Key 4 16 Shaft Dial Key 8 x 12 Hand wheel Spring washer 10 Washer 10 Cap screw M10 x 30 Guide finger Set screw M6 x 22 Holding plate 1 Ruler Dust guard cover Wedge Holding plate 2 Gear rack Ball beaiing 200 __ Cap screw M6 x 12 aoe wheel Yas ruler Name plate Pinion zl Cap screw M6 x 16 Key 4 x 25 Y axis bearing seat 1 l Bevel gear l End cover Working table Retaining ring 12 Y axis feeding screw Ball 5 0 1 pet ek 33 Spring 0 8 0 8 x 10 l Screw M6 x 10 Screw M6 x 8 l Y axis screw nut T Handle stock l Holding plate 3 Operating lever 3 Dust guard cover Cop erp E m ww Screw seat 1 Cap screw M8 x 25 4 Cap screw M6 x 16 2 Guide finger l Set screw M6 x 22 6 Cap screw M6 x 25 l lt Nut M6 E Spindle box seat 1 J O Handle Wedge E eee 2 a i 32 Guide finger 1 66 Wedge Screw
3. If necessary screw the Handles into the Small Hand Wheels Check the angle of the Vertical Support 68 for true vertical Check all bolts for tightness Operation This Mini Milling Drilling Machine is capable of machining metal and nonmetallic stock by cutting drilling and milling It can cut circular surfaces both inside and out cones mill planes or grooves and other cutting functions depending on the tools used The machine consists of the following main components as shown in the photo below Motor 127 Electrical Box 69 Vertical Support 68 Small fine Feed Wheel 93 Headstock and Spindle Box 49 Balance Mechanism Assy Emergency Stop Switch 37 Speed Control Knob 134 Limit Block 65 Connecting Strut 72 Longitudinal Feed Hand Wheel Working Table 19 Saddle 35 Base 1 Cross Feed Hand Wheel 5 SKU 44991 Page 5 Checks before Operation 1 Turn on the machine by lifting the cover and pulling out the Emergency Stop Switch 137 Turn the Speed Control Knob 134 and verify spindle speed changes Verify that the spindle is rotating clockwise Operate the Longitudinal Axis Working Table Cross Axis Saddle Seat and Vertical Axis Vertical Support and verify their proper operation and movement Caution Avoid injury to you or damage to machine Unplug the power cord from the electrical outlet before performing any adjustments tool replacement or maintenance Insta
4. LCENTRAL MACHINERY MINI VERTICAL MILLING DRILLING MACHINE WN Keyey 1 44991 ASSEMBLY AND OPERATING INSTRUCTIONS 3491 Mission Oaks Blvd Camarillo CA 93011 Visit our Web site at http 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 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 15 7 8 L x 3 11 16 W inches Save This Manual You will need the manual for the safety warnings and precautions assembly instructions operating and maintenance procedures parts list and diagram Keep your invoice with this manual Write the invoice number on the inside of the front cover Keep the manual and invoice in a safe and dry place for future reference Safety Warnings and Precautions WARNING When using tool basic safety precautions should always be followed to reduce the risk of personal injury and damage to equipment Read all instructions before using this tool 1 2 Keep work area clean Cluttered areas invite injuries Observe work area conditions Do not use machines or power tools in damp or wet locations Don t expose to rain Keep work area well lighted Do not use electrically powered tools in the presence of flammable gases or liquids Keep children away Children m
5. M6 x 8 Ruler 1 X axis wedge 1 68 Vertical Support 1 Saddle 69 Electric box l 36 Y axis wedge 70 LocknutM24 1 a7 Xai srt mot 1 7 Big washer i NOTE Some parts are listed and shown for illustration purposes only and are not available individually as replacement parts SKU 44991 Page 9 REV 03 05 Part Name Name Connecting strut Key 5 x 5 x 40 Spindle Transmission gear Support block Sleeve Pin3 x 12 1 Bracket l Screw M5 x 25 92 Spring steel 10 31136 Cap screw M5 x 8 Bearing cover Motor Motor gear Flat screw M6 x 12 Round screw M5 x 8 Speed control knob il 138 Gear 95 Small shaft 1 139 Ball bearing 80101 96 Cover l 140 Transmissiom gear Screw M4 x 6 Internal ring 12 1 Screw M5 x 16 2 Set screw M5 x 100 Dust guard I 144 Self tapping Screw ST2 9 x 8 101 Clamp bolt M6 x 12 1 J 102 Upper end washer l Upper end screw M6 x 16 l 4 104 Set screw M6 x 6 l 148 Screw M6 x 10 1 105 Spring 0 8 x 4 8 x 10 l 149 Warning lable 1l 106 Ball 5 0 l 150 PC board 107 Handle seat 1 151 Lock sleeve l 108 Double head bolt M8 x 70 1 152
6. Rotor shaft 1 109 Knob 1 153 Key4 x6 l 110 Warning label 1 154 Spring support _ 1 111 Controller 155 Torsion spring l 112 Label on controller Cover 1 Spacing ring Small shaft 119 Spacing ring o1 159 Supporting shank 2 160 Screw Spindle nut 120 SKU 44991 Double round head key 5 x 5 x 30 1 1 l l REV 11 02 Longitudinal Y Axis and Cross X Axis Assembly Drawing SKU 44991 Page 11 Vertical Z Axis Assembly Drawing 165 16 ar 70 SKU 44991 Page 12 Spindle and Gear Box Assembly Drawing SKU 44991 Page 13
7. e with this tool Approved accessories are available from Harbor Freight Tools Do not operate tool if under the influence of alcohol or drugs Read warning labels on prescriptions to determine if your judgment or reflexes are impaired while taking drugs If there is any doubt do not operate the tool Use proper size and type extension cord If an extension cord is required it must be SKU 44991 Page 3 21 of the proper size and type to supply the correct current to the tool without heating up Otherwise the extension cord could melt and catch fire or cause electrical damage to the tool This tool requires use of an extension cord of 0 to 10 amps capability up to 50 feet with wire size rated at 18 AWG Longer extension cords require larger size wire If you are using the tool outdoors use an extension cord rated for outdoor use signified by WA on the jacket Maintenance For your safety service and maintenance should be performed regularly by a qualified technician Note Performance of this tool if powered by line voltage may vary depending on varia tions in local line voltage Extension cord usage may also affect tool performance Warning The warnings cautions and instructions discussed in this instruction manual cannot cover all possible conditions and situations that may occur It must be under stood by the operator that common sense and caution are factors which cannot be built into this product but must be su
8. imit Block 65 SKU 44991 Page 6 REV 12 04 2 Adjust the position of the Limit Block 65 up or down Refer to the Ruler 67 on the side of the Vertical Support 68 3 Tighten the Handle Adjusting the Vertical Support Angle 1 Using the Large Wrench accessory A loosen Lock Nut 70 only enough to allow movement of the Vertical Support 68 Caution Avoid injury or damaging machine hold the Vertical Support in place to keep it from fall ing to the left or right during adjustment 2 Adjust the Vertical Support angle as needed 45 degrees left or right maximum Check Ruler 44 for angle 3 When the Vertical Support is at the desired angle tighten Lock Nut 70 again Basic Drilling and Milling Procedure During the following procedure it may be helpful to refer to the machine photo on page 5 1 Make desired changes and adjustments to the machine for drilling or milling 2 Set an appropriate speed for drilling or milling the workpiece Use the Speed Control Knob 134 to adjust the Spindle speed For cutting metal the speed range should be between 200 to 2500 RPM Faster speeds are generally used when milling softer materials and drilling small holes And slower speeds for milling harder material and drilling larger holes Using a fixture not supplied mount the workpiece to the Working Table 19 4 Adjust the Limit Block 65 height This will enable Spindle movement to the desired cut and disable an
9. llation of the Taper Shank Cutter f 2 Ta Note For illustration Removal of the Taper Shank Cutter purposes only Only 1 2 5 Pull off the Protective Cover 126 Wipe the spindle sleeve and taper of all dirt and grease Unscrew Clamp Bolt 101 and remove Dust Guard 100 Place the Taper Shank B into the Spindle 79 sleeve Cover the Cutter C not included end with an oil cloth to protect hands and machinery Insert the Fixing Pin accessory D on the right side of the Spindle sleeve Refer to page 4 Using the 14 open end wrench accessory G tighten i clockwise the Spindle draw bar A to lock in the Taper Shank Cutter into the Spindle Pull out the Fixing Pin and replace the Protective Cover Chuck with Taper Shank Pull off the Protective Cover 126 164 is included Insert the Fixing Pin accessory D on the right side of the Spindle sleeve Using the 14 open end wrench accessory G loosen counterclockwise the Spindle draw bar A to unlock the Taper Shank Cutter in the Spindle Using a plastic hammer gently tap the Taper Shank B until it breaks free Place a cushion on the Working Table 19 to protect the assembly if it falls out Replace the Taper Shank Cutter with the Drill Chuck or other tool if desired Travel Adjustment Adjusting the Limit Block 65 can control the travel of the Spindle Box 1 Loosen Handle 30 attached to the L
10. odically apply to the X axis feed screw saddle seat Y axis feed screw working table and Z axis feed gear rack vertical support Periodic General Maintenance 1 Inspect all moving parts for lack of lubrication If necessary lubricate as described above 2 Using compressed air blow the machine clean of all foreign material Wear eye protection during this operation Check all adjustment screws bolts and handles for tightness Store cutting tools in a wooden box or other moisture proof package Cover the machine when not in use Sharpen cutting tools as soon as they become dull Always keep the taper shank clean Store all tools and accessories in a clean and dry location near the machine SN oe gi ee Always use the supplied tools and wrenches to make repairs and adjustments PLEASE READ THE FOLLOWING CAREFULLY THE MANUFACTURER AND OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY NEITHER THE MANUFACTURER NOR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT IN FACT THE MANUFACTURER AND OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS AND NOT BY THE BUYER THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODU
11. pplied by the operator Unpacking When unpacking check to make sure the following parts and accessories are included B 13 mm Dril Chick with Taper Shank Co fwon CO es ooo If any parts are missing or broken please call Harbor Freight Tools at the number on the cover of this manual as soon as possible Installation Place the machine on a level flat and heavy work table or bench sufficient to support weight and use of product and with sufficient light and enough side room to allow movement of the Working Table 19 Secure the machine to the appropriate table or bench using four hex screws not supplied by screwing them through the base mounting holes SKU 44991 Page 4 REV 11 02 An optional oil pan can be placed under the machine before it is mounted to the table Before operation loosen the slide worktable and drill mill spindle They were locked for shipping 5 Remove all packing material and clean machine with nonflammable solvent Oil the machine according to the lubrication requirements before running the machine Assembly 1 Install the Chuck Thoroughly clean the tapered hole in the Chuck 164 and the Spindle 79 shaft of all dirt grease oil and protective coatings paint thinner may be necessary Slide the Chuck onto the Spindle shaft Turn the Chuck sleeve clockwise and open the jaws completely Tap the nose of the Chuck lightly with a piece of wood to securely set the Chuck 2
12. safer performance Follow instructions for lubricating and changing accessories Inspect tool cords periodically and if damaged have them repaired by an authorized technician The handles must be kept clean dry and free from oil and grease at all times Disconnect power Unplug tool when not in use Remove adjusting keys and wrenches Check that keys and adjusting wrenches are removed from the tool or machine work surface before plugging it in Avoid unintentional starting Be sure the switch is in the Off position when not in use and before plugging in Stay alert Watch what you are doing use common sense Do not operate any tool when you are tired 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 Check for alignment and binding of moving parts any broken parts or mounting fixtures and any other condition that may affect proper operation Any part that is damaged should be properly repaired or replaced by a qualified technician Do not use the tool if any switch does not turn On and Off properly Guard against electric shock Prevent body contact with grounded surfaces such as pipes radiators ranges and refrigerator enclosures Replacement parts and accessories When servicing use only identical replacement parts Use of any other parts will void the warranty Only use accessories intended for us
13. ust never be allowed in the work area Do not let them handle machines tools or extension cords Store idle equipment When not in use tools must be stored in a dry location to inhibit rust Always lock up tools and keep out of reach of children Do not force tool It will do the job better and more safely at the rate for which it was intended Do not use inappropriate attachments in an attempt to exceed the tool Capacity SKU 44991 Page 2 10 Ate 12 13 14 15 16 17 18 19 Use the right tool for the job Do not attempt to force a small tool or attachment to do the work of a larger industrial tool There are certain applications for which this tool was designed Do not modify this tool and do not use this tool for a purpose for which it was not intended Dress properly Do not wear loose clothing or jewelry as they can be caught in moving parts Protective electrically non conductive clothes and non skid footwear are recommended when working Wear restrictive hair covering to contain long hair Use eye and ear protection Always wear ANSI approved impact safety goggles Wear a full face shield if you are producing metal filings Wear an ANSI approved dust mask or respirator when working around metal and chemical dusts and mists Do not overreach Keep proper footing and balance at all times Do not reach over or across running machines Maintain tools with care Keep tools sharp and clean for better and
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