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7” x 10” Precision
Mini Lathe
Model 93212
set uP and oPerating instructions
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read this material before using this product.
Failure to do so can result in serious injury.
sa Ve this ManuaL.
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Copyright 2006 by Harbor Freight Tools . All rights reserved. No portion of this manual or any artwork
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Harbor Freight Tools. Diagrams within this manual
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oPeration .....................................20 contents start uP ............................................. 20 iMPortant saFetY t o stoP the Lathe ........................... 21 inForMation .................................3 Basic oPerations ........................... 22 generaL t ooL saFetY Warnings . 3 threading gears ............................ 23 grounding instructions ..........5 thread size gear settings ......... 23 110-120 V~ grounded t ooLs: autoMatic Feed and threading t ooL
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notice is used to sa Ve this ManuaL address practices not Keep this manual for the safety warnings related to personal injury. and precautions, assembly, operating, caution, without the inspection, maintenance and cleaning safety alert symbol, is procedures. Write the product’s serial number used to address practices not in the back of the manual near the assembly related to personal injury. diagram (or month and year of purchase if product has no number). Keep this manual general
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8. USE RIGHT TOOL. Don’t force tool or 13. DON’T OVERREACH. Keep proper attachment to do a job for which it was footing and balance at all times. not designed. 14. MAINTAIN TOOLS WITH CARE. Keep recoMMended MiniMuM Wire tools sharp and clean for best and safest gauge For extension cords performance. Follow instructions for (120 VoLt) lubricating and changing accessories. extension cord naMePLate 15. DISCONNECT TOOLS before servicing; Length aMPeres when changing accessories, such as (a
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3-pole receptacles that accept the tool’s grounding instructions plug. t o PreVent 6. Repair or replace damaged or worn cord eLectric shock immediately. and death FroM incorrect grounding Wire connection read and FoLLoW these instructions: grounding 110-120 V~ grounded t ools: t ools Pin with three Prong Plugs 1. In the event of a malfunction or 125 V~ 3-Prong Plug and outlet breakdown, grounding provides a path (for up to 125 V~ and up to 15 a) of least resistance for electric curr
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6. do not oPerate With anY carriage will contact the chuck during guard disaBLed, daMaged, or operation. reMoVed. Moving guards must 19. Use the appropriate feed and speed move freely and close instantly. rates for the project. 7. Rotate workpiece by hand before 20. Allow the lathe to reach its full speed applying power. before beginning a cut. 8. Rough out workpiece before installing on 21. Only use safety equipment that has been faceplate. approved by an appropriate standards 9. Do no
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Your risk from these exposures varies, or physical symptoms related to vibration depending on how often you do this type (such as tingling, numbness, and white of work. To reduce your exposure to or blue fingers), seek medical advice as these chemicals: work in a well ventilated soon as possible. area, and work with approved safety 2. Do not smoke during use. Nicotine equipment, such as those dust masks reduces the blood supply to the hands that are specially designed to filter out and
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Packing List sPeciFications Part Motor 120 V~ / 60 Hz / 3/4 HP description Qty #(s) 0 - 1100 RPM (Low) Speed Ranges 1 Main unit 1 0 - 2500 RPM (High) 2 External Chuck Jaw Set 3 jaws 166 Fast Acting 4 amp mini Fuse Type glass (F4AL250VP) 3 Chip Tray 1 126 Lx136 4 Chuck Key 1 167 Belt Pitch: 1.5mm 5 5 A Fuse 1 314 Teeth: 70 6 Gear: 30, 35, 40, 40, 45, 10 157- Drive Gear and Belt 50, 55, 57, 60, 65 T gears 165 Swing Over Bed 7” 7 Spanner Wrench: 8-10, 2 312, Dist. Between Centers 10” 14-17 wren
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generaL Mini Lathe coMPonents note: Refer to the parts list and diagram at the end of this manual for complete part number listings and locations. See the following page for a description of the major components. Part description Part description 1 Bed Way 126 Chip Tray 2 Chuck 129 Lead Screw 33 H/L Speed Gear Shift Lever 138 Tailstock 35 Feed Direction Selector 143 Live Center 53 Gear Drive Cover 146 Tailstock Quill Fix Holder 79 Automatic Feed Handle 151 Motor Cover 84a Tailstock Quill Contr
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PoWer controLs oVer VieW controls on the Front of the Lathe controls on the Back of the Lathe Forward-OFF-Reverse Switch (181) Feed Direction Selector (35) H/L Gear Shift Lever (33) Power Switch (178) Speed Control Knob (180) Figure 2 Power switch (178) Figure 3 Turns on and off power to the motor. Feed direction selector (35) When the Power Switch is lit, the motor is on. Changes the Lead Screw (129) rotation from Forward (toward the Chuck) to Forward-oFF-reverse switch (181) Neutral (no ro
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Lathe coMPonents oVer VieW Following are brief descriptions of major components of the Mini Lathe. Bed Way (1) - The Bed Way is the base of t ailstock (138) - The Tailstock holds the the work area under the Chuck and Tailstock Quill (142) which is used to Tailstock. It is where the Tailstock and hold various tools (sold separately) or a Compound Rest are attached and what Live Center (143). they slide along. thread indicator dial (302) - The Threading chuck (2) - The Chuck holds the three
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t o Mount the Lathe to a Workbench: asseMBLY instructions Drill holes for permanent mounting: note: For additional information regarding the 14-7/8” parts listed in the following pages, refer to the Assembly Diagram near the end of this manual. 1. Warning! Make sure the Power Figure 5 Switch of the tool is in its “OFF” position Unthread the Bolts (67) from the bottom and that the tool is unplugged from of the unit. Measure and drill holes in the its electrical outlet before making any
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Washer (239), Spring (237), and Nut installing guards (240). Then, thread the Screw (238) into Protective Cover (235) the Compound Rest (108). Slide the Chuck Guard (201) notch in the Protective Cover (235) over the end of the Slotted Screw (236). Figure 7 Figure 8 1. To install the Chuck Guard (201), remove the two Screws (73) on the Hinge (202). Attach the Chuck Guard (201) to the Hinge using the Screws. The Chuck Guard should be aligned so that it covers the Chuck (2) when swung
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Feeding Direction Selector (35) to the set uP middle (Neutral). Forward/OFF/Reverse Switch (181) initial t est run Fuse Holder (179) Before further set-up of the Lathe, check that the power components are working properly by performing the following test run. 1. Check that all loose parts and tools are out of the way and nothing will interfere with the Chuck (2) when it rotates. Power Switch (178) Chuck (2) Speed Control Knob (180) Figure 12 5. On the front of the Lathe, make sure the Fo
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setting, and letting it run for several replacement of chuck minutes at each setting before increasing Chuck (2) to the next level. Continue until you’ve run the Lathe all the way up to the highest setting. 11. Turn the Power Switch OFF and wait for the Lathe to come to a complete stop. 12. Repeat the process with the H/L Gear Shift Lever at the High setting. Then repeat at both the Low, then High setting with the Forward/OFF/Reverse Switch in the Reverse position. Warning: the Mini Lat
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in the Chuck groove. The Jaws are designed to work as complete sets. Do Lead thread of Scroll a not mix pieces from one set with the other set when installing in the Chuck. Insert Jaw #1 B Chuck Key (167) Jaw Scroll Grooves Chuck (2) Chuck (2) Figure 15 The jaws are held in place by a spiralled scroll inside the Chuck which rotates around the center of the chuck with the c Chuck Key. As the scroll rotates, it hooks into the jaw ridges, then pulls each Jaw toward the center of the Chuck
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slightly, then clockwise, to engage the t ailstock adjustments lead thread into the Jaw (B and C in The Tailstock (138) holds tools, such as Figure 16). the Live Center (143), which are used e. Slide Jaw #2 into the next groove with the Chuck Jaws (167 or 168) to hold and continue turning the Chuck Key work pieces in place. clockwise to advance the lead thread into the next Jaw. Slide Jaw #3 with the Tailstock Quill Fix Tailstock Holder (146) Tailstock Quill (142) same procedure as Ja
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4. The Tailstock Quill is locked in place with until they are securely holding the tool in the Tailstock Quill Fix Holder (146). Turn place. it clockwise to lock the Quill in place and counterclockwise to loosen it. Tighten the automatic Feeding Nut (6) underneath the Quill to eliminate Feed Control any play in the Quill. Wheel (84b) 5. To adjust the Tailstock slightly to the right or left of center, loosen the Screw (197) OFF on the bottom of the Tailstock. Adjust, then tighten. ON t
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b. Use the 5mm Hex Wrench (part of threading dial 311) to loosen the Plate (303) and the The Threading Dial (65) is used to align Threading Dial Body (68). and track the threads cut in a threading c. Rotate both pieces so the Pinion (66) project. It can only be used when the on the back side of the Threading Dial Lathe is set to automatic feed (See Body makes contact with the Lead previous section on Automatic Feeding). Screw (129) (“Dial Engaged” in Figure To set up the Threading Dia
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Repeat each time before using a Crank oPeration in either direction when you need precise measurements. start up 4. Adjust the Controls: note: Not following this start-up procedure will cause the Lathe to immediately shutdown. This is an overload protection h L feature for the circuit board and motor. L n r 1. Begin with the Lathe unplugged. 2. Install the required Jaws (166 or 168) Figure 23 into the Chuck (2). a. On the back of the Lathe, set the Spindle Speed with the H/L Gear Shift
