7” X 12” mini lathe Model 93799 ASSEMBLY AND OPERATING INSTRUCTIONS Due to continuing improvements, actual product may differ slightly from the product described herein. ® 3491 Mission Oaks Blvd., Camarillo, CA 93011 Visit our Web site at: http://www.harborfreight.com Copyright© 2006 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.
PRODUCT SPECIFICATIONS Motor Power Source Drive Swing Over Bed Distance Between Centers Spindle Bore Quill Travel Cross Slide Travel Cross Slide Swing Work Tolerance Bed Dimensions Saddle Travel Compound Travel Speed Ranges Chuck Dimensions 3/4 Horsepower 110V~, 60 Hz, Single Phase Gear and Belt 7” 12” 3/4” 2” 2-3/4” 4-1/2” .
4. Grounded tools must be plugged into an outlet properly installed and grounded in accordance with all codes and ordinances. Never remove the grounding prong or modify the plug in any way. Do not use any adapter plugs. Check with a qualified electrician if you are in doubt as to whether the outlet is properly grounded. If the tools should electrically malfunction or break down, grounding provides a low resistance path to carry electricity away from the user. ELECTRICAL SAFETY 5.
wrench or a key that is left attached to a rotating part of the power tool may result in personal injury. 14. Do not overreach. Keep proper footing and balance at all times. Proper footing and balance enables better control of the power tool in unexpected situations. 15. Use safety equipment. Always wear eye protection. Dust mask, nonskid safety shoes, hard hat, or hearing protection must be used for appropriate conditions. TOOL USE AND CARE 16.
Use of unauthorized parts or failure to follow maintenance instructions may create a risk of electric shock or injury. SPECIFIC SAFETY RULES 1. Maintain labels and nameplates on the Mini Lathe. These carry important information. If unreadable or missing, contact Harbor Freight Tools for a replacement. 2. Always wear ANSI-approved safety impact eye protection, full face shield and heavy work gloves when using the Mini Lathe. Using personal safety devices reduce the risk for injury.
GROUNDING WARNING! Improperly connecting the grounding wire can result in the risk of electric shock. Check with a qualified electrician if you are in doubt as to whether the outlet is properly grounded. Do not modify the power cord plug provided with the tool. Never remove the grounding prong from the plug. Do not use the tool if the power cord or plug is damaged. If damaged, have it repaired by a service facility before use.
5. Double insulated tools may be used in either of the 120 volt outlets shown in the preceding illustration. (See Figure B.) EXTENSION CORDS 1. Grounded tools require a three wire extension cord. Double Insulated tools can use either a two or three wire extension cord. 2. As the distance from the supply outlet increases, you must use a heavier gauge extension cord.
RECOMMENDED MINIMUM WIRE GAUGE FOR EXTENSION CORDS* (120 or 240 VOLT) NAMEPLATE AMPERES (At Full Load) 25 Feet 50 Feet 75 Feet 100 Feet 150 Feet 0 – 2.0 18 18 18 18 16 2.1 – 3.4 18 18 18 16 14 3.5 – 5.0 18 18 16 14 12 5.1 – 7.0 18 16 14 12 12 7.1 – 12.0 18 14 12 10 - 12.1 – 16.0 14 12 10 - - 16.1 – 20.0 12 10 - - - FIGURE C EXTENSION CORD LENGTH * Based on limiting the line voltage drop to five volts at 150% of the rated amperes.
Unpacking Carefully unpack the Mini Lathe and check all items. Figure 1 below shows all the contents of the carton. Do not discard any packing material until the Mini Lathe is fully assembled and operational. If any parts are missing or broken, please call Harbor Freight Tools at 1-800-444-3353. Be sure you have all parts described in the parts listing at the back of the manual. Identification of Main Components A. Lathe D. Chuck B. Chuck Key C. External Jaws E. Chuck Set Screws F.
Mini Lathe Features 1. Power Switch 2. Power lamp 3. Fuse 4. Speed Control Knob 5. Chuck 6. Compound Rest 7. Tool Post 8. Fixed Center 9. Tailstock Quill Fix Holder 10. Tailstock 11. Tailstock Quill Adjust Handwheel 12. Tailstock Set Screw 13. Compound Rest Crank SKU 93799 14. Feeding Control Wheel 15. Cross Feeding Crank 16. Automatic Feeding Handle 17. Thread Dial Indicator 18. Bed Way 19. Lead Screw 20. Rear Splash Guard 21. Feeding Direction Selector 22. Power Cord 23. Chip Tray 24. Motor Cover 25.
Adjusting the Mini Lathe 1. Clean off the protective grease on the Mini Lathe. 2. Check to see that the three set screws on the chuck are tight. 3. Turn the chuck by hand and check that it rotates freely. 4. Move the Feeding Direction Selector (located on the back of lathe) to the middle. 5. Make sure the Switch (#1 in figure 4 below) is at the OFF position. Warning: Adjust the Speed control knob (#4) by turning it to zero.
Replacement of Jaws There are two types of jaws: the internal jaws and external jaws. Please note that the number of jaws fit with the number inside the chuck’s groove. Do not mix them together. When you are going to mount the jaws, mount them in ascending order. When they are taken out, make sure to take them out in descending order (3-2-1) one by one. After you finish this procedure, rotate the jaws to the smallest diameter and check that the three jaws are well fitted (see figure 7).
Tool Post Adjustment Threading Loosen the lever shown in (B) of figure 11, the adjust the tool post position. Once the adjustment is made, re-tighten the lever. To replace the work cutter, loosen the screws (A) with the hex key wrench provided. Select the feeding direction selector to the thread direction desired. Then press down handle (A) in figure 12 by matching the right calibrations on the thread dial indicator (B) and continue with the automatic threading procedure.
3. By changing the tool post angle and 4. adjusting the compound rest, you can do internal cutting (figure 15). Fig 15 After adjusting the angle of the compound rest, you can do bevel cutting (figure 16). Fig 16 Setup Instructions for Threading Gears By changing the gear set-up it is possible to cut any thread size.
Threading Chart Change Gear Box A A C B B D D SKU 93799 Thread Per Inch 12 13 14 16 18 19 20 22 24 Change Gear Box A B C D 40 65 / 30 40 65 60 30 40 65 / 35 40 65 / 40 40 65 / 45 40 50 60 57 40 65 / 50 40 65 / 55 40 65 / 60 Thread Per Inch 26 28 32 36 38 40 44 48 52 Change Gear Box A B C D 40 60 / 65 20 65 / 35 20 65 / 40 20 65 / 45 20 60 60 57 20 65 / 50 20 65 / 55 20 65 / 60 20 60 / 65 For technical questions, please call 1-800-444-3353. Page 15 Rev.
Additional Setup Instructions for Threading Gears When the lathe is ON and the Spindle is revolving, the threaded bar and the Thread Dial Indicator will also be revolving (see below). Thread Dial Indicator Indicator Housing Top View Thread Indicator Housing Ensure that the Alignment Mark is lined up with the Thread Dial Indicator before operation. Move the cutting blade to the proper position, and adjust theThread Dial Indicator to the desired mark.
SKU 93799 For technical questions, please call 1-800-444-3353.
SKU 93799 For technical questions, please call 1-800-444-3353.
SKU 93799 For technical questions, please call 1-800-444-3353.
SKU 93799 For technical questions, please call 1-800-444-3353.
SKU 93799 For technical questions, please call 1-800-444-3353.
PACKING LIST No. 1 2 3 4 5 6 7 8 9 10 11 12 Description 7” x 12” Mini Lathe Chuck external jaws Chuck Key Fuse 5A Gear Z: 30, 35, 40, 40, 45, 50, 55, 57, 60, 65 Double head wrench 8-10, 14-17 Inside hex wrench S: 3, 4, 5, 6 Oil can Center MT: 2 Rubber Knob Instruction Manual Q’ty 1 3 1 1 10 2 4 1 1 4 2 1 Part 143 125 85 PLEASE READ THE FOLLOWING CAREFULLY THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY.
Wiring Diagram Warranty SKU 93799 For technical questions, please call 1-800-444-3353. Page 23 Rev.