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7” x 10” Mini Lathe
Model 33684
Assembly and Operating Instructions
®
3491 Mission Oaks Blvd., Camarillo, CA 93011
®
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 cal
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Important Safety Instructions READ ALL INSTRUCTIONS AND WARNINGS BEFORE USING THIS TOOL. Operator COMMON SENSE AND CAUTION ARE FACTORS WHICH CANNOT BE BUILT INTO ANY PRODUCT. THESE FACTORS MUST BE SUPPLIED BY THE OPERATOR. PLEASE REMEMBER: 1. When using electric tools, machines or chemical dusts and mists. equipment, basic safety precautions should -A full face shield if you are producing metal always be followed to reduce the risk of fire, or wood
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Operation 1. Never force the tool or attachment to Check to see if your tool has a two or three- do the work of a larger industrial tool. It is prong plug. If your tool has a two-prong plug, designed to do the job better and more you may proceed past the next paragraph. If safely at the rate for which it was intended. your tool has a three-prong plug, please continue 2. Do not carry the tool by its power reading the following precautions and instruc- cord. tions. 3. Always unplug the cord
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Additional Safety Rules for Mini Lathe 1. Before turning on the motor, make sure when the lathe is on. Never check the that proper lubrication is included (see page sharpness of the cutter by using your hand. of this manual). 5. Avoid accidents resulting from broken 2. Always dismount the chuck and lathe’s workpieces. Never use an excessively large face plate by hand. Do not use power tools tool cutter to do feeding with a large to perform these tasks. workpiece.
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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 on page . Identification of Main Components A. Lathe B. Chu
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Mini Lathe Features 1. Power Switch 1.15. Feeding Control Wheel 16. Cross Feeding Crank 2. Power lamp 3. Fuse 17. Automatic Feeding Handle 18. Thread Dial Indicator 4. Speed Control Knob 6. Chuck 19. Bed Way 7. Compound Rest 20. Lead Screw 21. Rear Splash Guard 8. Tool Post 9. Fixed Center 22. Feeding Direction Selector 23. Power Cord 10.Tailstock Quill Fix Holder 11. Tailstock 24. Chip Tray 12. Tailstock Quill Adjust Handwheel 25. Mot
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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. BEFORE TURNING ON THE MINI LA
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Replacement of Jaws There are two types of jaws: the internal If the jaws do not fit well together, you will need to jaws and external jaws. Please note that the reassemble them again. number of jaws fit with the number inside the chuck’s groove. Do not mix them together. When mounting a workpiece, it is recommended that all three jaws are loosened at the same time. When you are going to mount the jaws, This will protectthe threads inside. mount them in ascending order. When they are taken
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Tool Post Adjustment 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 Threading replace the work cutter, loosen the screws Select the feeding direction selector to the (A) with the allen wrench provided. thread direction desired. Then press down handle (A) in figure 12 by matching the right Automatic Feeding calibrations on the thread dial indicator (B) Adjust the feeding direction selector to the and continue
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3. By changing the tool post angle and adjusting the compound rest, you can do internal cutting (figure 15). 4. After adjusting the angle of the compound rest, you can do bevel cutting (figure 16). Set-Up Instructions for Threading Gears By changing the gear set-up it is possible to cut any thread size. The factory set-up for Mini Lathe gears is as follows (see illustration below): A A Position A= 20T Positi
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Gear Settings for Various Thread Sizes Threads Stud Gear Box Threads Stud Gear Box Per Inch A B C D Per Inch A B C D 12 40 30 38 20 50 60 57 13 40 65 60 30 40 20 50 14 40 35 44 20 55 16 40 40 48 20 60 18 40 45 52 20 65 19 40 50 60 57 56 20 35 30 60 20 40 50 64 20 40 20 40 22 40 55 72 20 45 20 40 24 40 60 76 20 50 30 57 26 40 65 80 20 50 20 40 28 20 35 88 20 55 20 40 32 20 40 96 20 60 20 40 36 20 45 104 20 65 20 40 Example: To cut 12 threads per inc
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SKU #33684 Page 13
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SKU #33684 Page 14
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Parts Diagram SKU #33684 Page 15
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Additional Set-Up 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 Insure that the Alignment Mark is lined up with the Thread Dial Indicator before operation. Move the cut
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SKU #33684 Page 16
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PACKING LIST No. Description Qty Part No. 1 7” x 10” Mini Lathe 1 piece 2 Chuck external jaws 3 piece 3 Chueck Key 1 piece 4 Fuse 5A 1 piece 5 Gear Z: 30, 35, 40, 40, 45, 50, 55, 57, 60, 65 10 pieces 6 Double head wrench 8-10, 14-17 2 pieces 7 Inside six horn wrench S: 3, 4, 5, 6 4 pieces 8 Oil can 1 piece 9 Center MT: 2 1 piece 143 10 Rubber 4 pieces 125 11 Knob 2 pieces 85 12 Instruction Manual 1 copy 13 Wiring Diagram of Control Circuit 1 copy 14 Warranty Document 1 copy SKU #33684 Page
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SCHEMATIC DIAGRAM Fuse Potentiometer Switch 2 Switch 1 Motor 110V/60Hz SKU #33684 REV 08/04 Page 18
