Central Machinery 93212 Set Up And Operating Instructions Manual
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Central Machinery 93212 Set Up And Operating Instructions Manual

7” x 10” precision mini lathe
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7" x 10" Precision
set uP and oPerating instructions
Visit our website at: http://www.harborfreight.com
read this material before using this product.
Failure to do so can result in serious injury.
saVe this ManuaL.
©
Copyright
2006 by Harbor Freight Tools
contained herein may be reproduced in any shape or form without the express written consent of
Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein. Tools required for
assembly and service may not be included.
For technical questions or replacement parts, please call 1-800-444-3353.
Manual revised 10e
Mini Lathe
Model
93212
®
. All rights reserved. No portion of this manual or any artwork

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Summary of Contents for Central Machinery 93212

  • Page 1 Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing improvements, actual product may differ slightly from the product described herein. Tools required for assembly and service may not be included.

  • Page 2: Table Of Contents

    ... 26 rePLaceMent oF carBon Brushes ... 27 rePLacing the Fuse ... 28 trouBLeshooting ... 29 asseMBLY diagraM ...34 asseMBLY diagraM (continued) ...35 Wiring diagraM ...36 LiMited 1 Year / 90 daY WarrantY ...37 reV 10b SKU 93212...

  • Page 3: Important Safety Information

    SKU 93212 For technical questions, please call 1-800-444-3353. notice is used to address practices not related to personal injury. caution, without the...
  • Page 4 A guard or other part that is damaged should be properly repaired or replaced. NEVER LEAVE TOOL RUNNING UNATTENDED. TURN POWER OFF. Don’t leave tool until it comes to a complete stop. SKU 93212...

  • Page 5: Grounding Instructions

    Use only 3-wire extension cords that have 3-prong grounding plugs and SKU 93212 For technical questions, please call 1-800-444-3353. 3-pole receptacles that accept the tool’s plug. Repair or replace damaged or worn cord immediately.
  • Page 6 Maintain labels and nameplates on the tool. These carry important safety information. If unreadable or missing, contact Harbor Freight Tools for a replacement. Avoid unintentional starting. Prepare to begin work before turning on the tool. People with pacemakers should consult their physician(s) before use.
  • Page 7 Raynaud’s Disease should not use this tool. If you feel any medical reV 10b SKU 93212 For technical questions, please call 1-800-444-3353. or physical symptoms related to vibration (such as tingling, numbness, and white or blue fingers), seek medical advice as soon as possible.

  • Page 8: Specifications

    4, 5, 6 wrenches Oil can Rubber Foot Mounting Screw Knob Manual shipping Bolt Locations To remove the lathe from the packing Many components need to be installed lathe before using. Part #(s) 157- 312, reV 10b, 10e SKU 93212...

  • Page 9: General Mini Lathe Components

    Cross Slide Crank Compound Rest Crank Cross Slide 105/108 Compound Rest (A and B) Tool Post Power Cord Figure 1 reV 10b SKU 93212 For technical questions, please call 1-800-444-3353. Part 84(b) 86(a) description Chip Tray Lead Screw Tailstock Live Center...

  • Page 10: Power Controls Overview

    Lathe is running. h/L gear shift Lever (33) Changes the spindle speed range from High (0 - 2500 RPM) to Low (0-1100 RPM). do not adjust the h/L gear shift Lever while the Lathe is running. reV 10b SKU 93212...

  • Page 11: Lathe Components Overview

    Lathe coMPonents oVerVieW Following are brief descriptions of major components of the Mini Lathe. Bed Way (1) - The Bed Way is the base of the work area under the Chuck and Tailstock. It is where the Tailstock and Compound Rest are attached and what they slide along.

  • Page 12: Assembly Instructions

    Clean off the protective grease on the Mini Lathe. attaching rubber Feet or installing to Workbench note: Mount or place the Lathe on a sturdy workbench or table, with good lighting, at a height that allows you to comfortably work without back strain.

  • Page 13: Installing Guards

    Screw (238) from the Compound Rest (108). Slide the Screw (238) through the Protective Cover (235), reV 10b SKU 93212 For technical questions, please call 1-800-444-3353. Washer (239), Spring (237), and Nut (240). Then, thread the Screw (238) into the Compound Rest (108).

  • Page 14: Set Up

    Chuck are tight. Feeding Direction Selector (35) H/L Gear Shift Lever (33) Figure 11 On the back of the Lathe, set the H/L Gear Shift Lever (33) to low and the Page 14 For technical questions, please call 1-800-444-3353. Feeding Direction Selector (35) to the middle (Neutral).

  • Page 15: Replacement Of Chuck

    Continue until you’ve run the Lathe all the way up to the highest setting. Turn the Power Switch OFF and wait for the Lathe to come to a complete stop.
  • Page 16 Scroll in groove #1 (A in Figure 16). Slide Jaw #1 into the groove and rotate the Chuck Key counterclockwise Lead thread of Scroll Chuck (2) Key (167), SKU 93212 reV 10b...

  • Page 17: Compound Rest Adjustment

    Swivel the Compound Rest to the desired angle. Tighten the two Screws. reV 10b SKU 93212 For technical questions, please call 1-800-444-3353. tailstock adjustments The Tailstock (138) holds tools, such as the Live Center (143), which are used with the Chuck Jaws (167 or 168) to hold work pieces in place.

  • Page 18: Tool Post Adjustment

    The Automatic Feed Lever (79) controls whether the Carriage (93) moves automatically, or manually. When the Lever is Up, the Lathe is in Manual mode. Use the Feed Control Wheel (84b) to slide the Carriage to the right or left.

  • Page 19: Threading Dial

    10b SKU 93212 For technical questions, please call 1-800-444-3353. Use the 5mm Hex Wrench (part of 311) to loosen the Plate (303) and the Threading Dial Body (68).

  • Page 20: Operation

    Adjust the Controls: Figure 23 a. On the back of the Lathe, set the Spindle Speed with the H/L Gear Shift Lever (33) and the feed direction with the Feed Direction Selector (35).

  • Page 21: To Stop The Lathe

    Move the Variable Speed Control Knob (180) to the needed operating speed to start the Lathe. reV 10b SKU 93212 For technical questions, please call 1-800-444-3353. chuck guard Turn the Speed Control Knob (180) to 0. (201)

  • Page 22: Basic Operations

    (2) and the Live center (143) (As seen from back of Lathe to show detail) Figure 27 Use the chuck to hold the workpiece firmly. Then, use the Live Center (143) to fix the other end.

  • Page 23: Threading Gears

    Positions B & D= 80T To change the thread size, use the gear box settings shown on the table that follows. reV 10b SKU 93212 For technical questions, please call 1-800-444-3353. threads Per inch example 1: To cut 12 threads per inch (see...

  • Page 24: Automatic Feed And Threading Dial

    Set up the Threading Dial as described in the set uP section under threading dial. Set the direction for the lathe with the Forward/OFF/Reverse Switch. Turn the Power Switch on (the switch will light up).

  • Page 25: Maintenance And Servicing

    Warning! if the supply cord of this power tool is damaged, it must be replaced only by a qualified service technician. reV 10b SKU 93212 For technical questions, please call 1-800-444-3353. Belt inspection and tensioning Remove belt cover, if equipped. Examine belt for cracks, tears in the backing, or other damage.

  • Page 26: Gib Adjustments

    Set aside. Turn a 60° point on a piece of scrap metal to make a dead center. Compound Rest A (108) Gib Screws (106) and Nuts (98) Gib Screws (99) Gib (94) and Nuts (98) tailstock alignment SKU 93212 reV 10b...

  • Page 27: Replacement Of Carbon Brushes

    Place the dead center in the Tailstock. Attach a Lathe Dog (part of SKU 3448 - sold separately) the to 6” piece from step 1 and mount between centers. Turn approximately 0.010” off of the diameter of the mounted workpiece.

  • Page 28: Replacing The Fuse

    Fuse Holder clicks into place. Release pressure. The Fuse Holder will be flush with the rim of the Fuse Holder Socket. Page 28 For technical questions, please call 1-800-444-3353. Control Panel (122) Fuse (314) Fuse Holder Socket reV 10b SKU 93212...

  • Page 29: Troubleshooting

    Internal motor damage or wear. Follow all safety precautions whenever diagnosing or servicing the tool. disconnect power supply before service. reV 10b SKU 93212 For technical questions, please call 1-800-444-3353. troubleshooting Motor and Electrical Check that cord is plugged in.
  • Page 30 Loosen or tighten the Gib screws (99 and/or 106) (See Gib Adjustment in Maintenance Section). Tighten Handwheel and/or crank handle. Tighten Leadscrew fasteners or have lead screw replaced by a qualified technician. Likely solutions reV 10b SKU 93212...

  • Page 31: Please Read The Following Carefully

    AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO. reV 10b SKU 93212 For technical questions, please call 1-800-444-3353. Likely solutions Remove Gibs, clean Gibs and all adjacent areas.

  • Page 32: Parts List

    Tool Post lever Tool Post Stud M10 x 65 Cross feed screw Bracket Screw M4 x 12 Nut M18 Model label Dial indicator label Control Panel Control box Power Cord *not shown on assembly diagrams. description reV 10b SKU 93212...
  • Page 33 Screw M5 x 10 Spring washer 5 Washer 5 Key 3*16 Spacer Spring Washer 8 Spring washer Screw M8 x 55 reV 10b SKU 93212 For technical questions, please call 1-800-444-3353. Parts List (continued) Part 310* 311* 312* 313* 314* 318* *not shown on assembly diagrams.

  • Page 34: Assembly Diagram

    10b Page 34 For technical questions, please call 1-800-444-3353. SKU 93212...

  • Page 35: Assembly Diagram (Continued)

    If product has no serial number, record month and year of purchase instead. note: Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts. reV 10b SKU 93212 For technical questions, please call 1-800-444-3353. Page 35...

  • Page 36: Wiring Diagram

    Wiring diagraM FC250BJ/110V CONTROLLER Output Input SAFETY SWITCH F/O/R POTENTIOMETER SWITCH POWER Black White CORD POWER SWITCH MOTOR reV 10b Page 36 For technical questions, please call 1-800-444-3353. SKU 93212...

  • Page 37: Limited 1 Year / 90 Day Warranty

    LiMited 1 Year / 90 daY WarrantY Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that for a period of ninety days from date of purchase that the engine/motor, the belts (if so equipped), and the blades (if so equipped) are free of defects in materials and workmanship.

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