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12” x 37” Gap Bed Lathe
Model 43681
AsseMBL y And OperA tiOn instructiOns
(Stand Not Included)
Due to continuing improvements, actual product may differ slightly from the product described herein.
®
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our website at: http://www.harborfreight.com
tO preVent seriOus injury, reAd And underst And
ALL wArninGs And instructiOns BefOre use.
© ®
Copyright 2006 by Harbor Freight Tools . All rights reserved. No portion of this manual
or any artwork cont
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specificA tiOns Motor: 2HP, 1700 RPM, Reversible Max. t ool shank size: 3/4” x 3/4” Lathe Bit power required: 220 V / 60 Hz, 1-Phase t ool post t ravel: Max. 3.5” , 0.001” per scale drive: Belt/Gear cross slide t ravel: 5.9”, 0.002” per scale swing Over Bed: 12” (Total Cut) swing Over Gap: 18.8” Longitudinal feed range: 0.005” - 0.0165” /R width of Gap: 7” (16 Steps) center to center: 37” cross feed range: 0.0014” - 0.0049 /R spindle Bore t aper: MT5 (16 Steps) spindle Bore: 1.5” t ailst
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sAfety wArninG & cA utiOns reAd ALL instructiOns BefOre usinG this t OOL! 1. Keep w OrK AreA cLeAn. Cluttered areas invite injuries. 2. OBser Ve w OrK AreA cOnditiOns. Do not use tools in damp, wet, or poorly lit locations. Don’t expose to rain. Keep work area well lit. Do not use electrically powered equipment in the presence of flammable gases or liquids. 3. Keep chiLdren A wAy. Children must never be allowed in the work area. Do not let them handle machines, tools, or equipment. 4. st Ore
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13. AVOid unintentiOnAL st ArtinG. Be sure that you are prepared to begin work before turning the start switch on. 14. st Ay ALert . Watch what you are doing. Do not operate this machine when you are tired. 15. dO nOt Oper Ate this MAchine whi Le under the inf Luence Of ALc OhOL, druGs, Or prescriptiOn Medicines. 16. chec K f Or 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
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BAsic cOMpOnents And feA tures Of y Our #43681 GAp Bed LA the reference description reference description A Press Switch T Tailstock Base C Emergency Stop Control U Lead Screw D Indicator Light V Control Lever E Gear Box W Thread Dial F Direction Control X Half Nut Lever G Speed Control A Y Cross/Longitudinal Feed Lever H Speed Control B Z Cross Slide Handwheel I Oil Gauge AA Saddle Handwheel J Chuck Feedrod & Leadscrew BB K Bedway Exchange Lever L Tool Holder CC Change Gear
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unp AcKinG, AsseMBL y, And set up. Basic assembly and adjustment of your new lathe was completed before being shipped. Final assembly and adjustments must be made before operating your new lathe. first find a suitable location for your lathe. 1. The floor or work table which you place your lathe on must be level, solid, and resistant to vibration. 2. Your lathe should be positioned in an area which is protected from the weather, especially water and moisture. 3. You should provide good li
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hOistinG And LeVeLinG this MA chine wArninG: dO nO t A tteMpt t O Lift the LA the By yOurseLf . this tool weighs over 800 lb., and cannot be lifted safely by one or several strong men. Be sure this lathe is balanced on the hoist or lift you will use to move it before moving. 1. Before hoisting, lifting or moving this machine, move the tailstock and apron to the far right end of the bedway (away from the headstock) and lock them in place there. This will help to balance the overall mass of the
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the heAdst OcK The headstock includes a Gear box (E) which con- tains gears and a belt drive. The gears are con- trolled by controls (F), (G), and (H). The belt drive transmits the motor power to the drive system of the machine. 1. The motor and drive belt are installed and ad- justed when delivered. However, you should check the adjustment of the drive belt before using this lathe. 2. Check the belt tension by pressing in the middle with your finger. You should be able to depress it appr
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S SP PE EE ED D A AN ND D P PO OW WE ER R C CO ON NT TR RO OL LS S You can turn your lathe on and off, and You can turn your lathe on and off, and control its speed and direction from the main control panel. control its speed and direction from the main control panel. The Power Switch The Power Switch speed And pO wer cOntr OLs S SP PE EE ED D A AN ND D P PO OW WE ER R C CO ON NT TR RO OL LS S You can turn lathe on and off and control speed and direction from the main control pane
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Apr On the function of the Apron is to support the toolpost, and to be carried along the workpiece by the lead screw. 1. Use the Control Lever (V) to start the mo- tion of the Spindle, and to rotate it forward or reverse. 2. To operate the lever, push it toward the headstock, then move it up or down. Mov- ing the lever down will cause the spindle to rotate forward, moving it up will cause the spindle to rotate in reverse. Placing the lever in the middle will cause the spindle not to rota
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the threAdinG diAL w hen the threads on the lead screw and on the workpiece are not in an integer ratio, it is necessary to use the thread- ing dial to control successive cuts. Determine this ratio by dividing the desired TPI of the workpiece (for example 24 TPI) by the thread pitch of the lead screw (8 TPI). This example results in an integer ratio of 3:1. A desired thread pitch of 26 TPI (for example) on the workpiece would require use of the threading dial. 1. When the threads on the
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cOMpOund sLide the tool is moved along the workpiece by the motion of the apron and its compo - nents. the apron may be power-driven by the lead screw, or may be moved by hand using the handwheels. 1. The Saddle Handwheel (AA) may be used to move the apron with its attached tool post and tools along the rotating axis of the workpiece. This is used to make longitudinal cuts. 2. The Cross Slide Handwheel (Z) is used to move the tool post horizontally across the axis of the workpiece. This m
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tAiLst OcK the tailstock slides along the bed way freely, and may be used to secure the free end of a rotating workpiece. 1. The tailstock is clamped to the bedway using the Tailstock Clamping Lever (Q). 2. The Quill (P) can be rotated inward and outward, using the Tailstock Handwheel (S). The Quill can be locked in place using the Quill Lock Lever. 3. The quill is shipped with a “dead end” which may be inserted into the quill. “Dead end” means that the end remains stationary, and al
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LuBricA tiOn headstock Lubrication. 1. The headstock gears should be lubricated with No. 70 (HL-70) Gear Compound. Check them periodically, and apply lubrication whenever they appear dry. Do not apply exces- sive grease, since you do not want to get grease on the drive belt. 2. The oil in the headstock should be changed regularly. When the machine is new, change the oil after the first 15 days of use. Change it again after the next 45 days of use. Thereafter, change the oil after each 6 month
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MAintenAnce wArninG: for your own safety, turn the switch Off and remove plug from electrical outlet before performing any maintenance work on the lathe. 1. Frequently blow out any dust accumulation inside the motor. 2. A coat of automotive wax to the bed will help keep the surfaces clean, and allow the tool rest and tailstock to move freely. 3. If the power cord is damaged, worn, or cut in any way have it replaced by a qualified electrician right away. tr OuBLeshOO tinG t rouble probable cau
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nOte: some parts are listed and shown for illustration purposes only and are not available individually as replacement parts. SKU 43681 for technical questions, please call 1-800-444-3353. Page 16
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SKU 43681 for technical questions, please call 1-800-444-3353. Page 17
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SKU 43681 for technical questions, please call 1-800-444-3353. Page 18
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SKU 43681 for technical questions, please call 1-800-444-3353. Page 19
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nOte: some parts are listed and shown for illustration purposes only and are not available individually as replacement parts. SKU 43681 for technical questions, please call 1-800-444-3353. Page 20
