This .pdf document is bookmarked Operating Instructions and Parts Manual Geared Head Drilling/Tapping Presses Models GHD-20/20T/20PF/20PFT Model GHD-20PFT shown JET 427 New Sanford Road LaVergne, Tennessee 37086 Ph.: 800-274-6848 www.jettools.com Part No.
Warranty and Service JET® warrants every product it sells against manufacturers’ defects. If one of our tools needs service or repair, please contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday. Warranty Period The general warranty lasts for the time period specified in the literature included with your product or on the official JET branded website. • JET products carry a limited warranty which varies in duration based upon the product.
Table of Contents Warranty and Service ............................................................................................................................................ 2 Table of Contents .................................................................................................................................................. 3 Warning ...........................................................................................................................................................
Warning 1. Read and understand the entire owner’s manual before attempting assembly or operation. 2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with all of these warnings may cause serious injury. 3. Replace the warning labels if they become obscured or removed. 4. This drill press is designed and intended for use by properly trained and experienced personnel only.
27. Use the right tool at the correct speed and feed rate. Do not force a tool or attachment to do a job for which it was not designed. The right tool will do the job better and more safely. 28. Use recommended accessories; improper accessories may be hazardous. 29. Maintain tools with care. Keep cutting tools sharp and clean for the best and safest performance. Follow instructions for lubricating and changing accessories. 30. Make sure the workpiece is securely attached or clamped to the table.
Introduction This manual is provided by JET covering the safe operation and maintenance procedures for JET Model GHD20 Series Drill Presses. This manual contains instructions on installation, safety precautions, general operating procedures, maintenance instructions and parts breakdown. This machine has been designed and constructed to provide consistent, long-term operation if used in accordance with instructions set forth in this manual.
Unpacking Contents of the Shipping Container 1 1 1 1 1 1 1 1 3 3 1 1 1 1 1 1 Gear Head Drill Press Lug Wrench Can of Gray Touch-Up Paint Drill Chuck Arbor (MT-3 x JT-6) Drawbar Drift Key Crank Handle Downfeed Handles (GHD-20/20T only) Knobs (two with GHD-20PF/20PFT) 3mm Hex Wrench 4mm Hex Wrench 5mm Hex Wrench Main Shaft Cover Owner's Manual Warranty Card 1. Finish removing the contents of the shipping container. 2. Compare the contents of the shipping container with the list above.
Adjusting the Head Height To facilitate shipping, the Drill Press is packed with the head adjusted down on the column. The head assembly should be moved to the top of the column before drilling operation starts. The head assembly is very heavy. Use caution when adjusting the head and make sure it is supported by the table or locked in place. Failure to comply may cause damage to property and/or personal injury! 1. Unlock the table by loosening the handle (A, Figure 3) 2.
Controls Low/Off/High Switch (A, Figure 8) – located top left side of the head assembly. Switch between low and high speed range. In the stop position, the spindle is stopped, but the machine still has power. Fine Feed Handwheel (B, Figure 8) – located on the front lower right of the head assembly. Turn clockwise to lower the quill. Turn counter-clockwise to raise the quill. Figure 7 Quill Lock (C, Figure 8) – located on the front lower right of the head assembly.
Control Panel for GHD-20T/20PFT Low/Off/High Switch (A, Figure 9A) Switch between low and high speed range. In the stop position, the spindle is stopped, but the machine still has power. Drilling Tapping Selector (B, Figure 9A) For drilling, press the start switch (F, Figure 9A) to run the machine. Caution: The internal depth stop (GHD-20PFT) is used only with the tapping function.
Adjustments Installing a Drill Chuck (not included) 1. Disconnect the machine from the power source. 2. Clean the arbor and the inside of the chuck. The tapers must be clean and dry. 3. Push the chuck onto the arbor. 4. Retract the chuck jaws completely, and push the arbor into the spindle. 5. Use a rubber mallet, or steel face hammer against a block of wood, to sharply tap the bottom of the chuck two or three times to seat it. (Note: Never use a steel face hammer directly against the chuck.
Adjusting the Depth Stop for Drilling (GHD-20PF) 1. Loosen the depth stop lock handle (A, Figure 12). 2. Manually advance the quill to the desired depth with one hand. 3. With the other hand, turn the depth stop scale (B, Figure 12) counter-clockwise to zero. 4. Tighten the depth stop lock handle (A, Figure 12). The depth stop will now stop the drill at the predetermined setting. Adjusting the Depth Stop for Drilling (GHD-20PFT) 1. 2.
Return Spring Adjustment The return spring is adjusted at the factory and should not need further adjustment. If adjustment ever becomes necessary: 1. Unplug the machine from the power source. 2. Loosen lock knob (A, Figure 14) while holding the quill spring cover. Do not allow the cover to turn in your hand or the spring will unwind. 3. Pull out the cover (B, Figure 14) and rotate until the pin (C, Figure 14) on the return spring plate engages the next notch in the coil spring cover.
Changing the Gear Box Lubricant 1. Disconnect the machine from the power source. 2. Loosen nuts (A, Figure 17). 3. Tilt the head to access the drain plug. The drain plug is found in the head cavity behind the spindle. 4. Loosen the drain plug but do not remove. 5. Return the head to upright position. 6. Place a container on the table to catch the draining lubricant. 7. Remove the filler plug (A, Figure 18). 8. Remove the drain plug. 9.
Troubleshooting GHD-20 series Drill Presses Trouble Probable Cause Remedy Excessive vibration. Motor out of balance. Balance motor or replace. Improper quill adjustment. Adjust quill. Dry spindle. Lubricate spindle. See the Lubrication section. Noisy motor Check motor bearings or for a loose motor fan. Overfeeding. Reduce feed rate. Dull drill bit. Sharpen drill bit. Motor not running up to speed. Replace or repair motor.
Replacement Parts Replacement parts are listed on the following pages. To order parts or reach our service department, call 1800-274-6848 Monday through Friday, 8:00 a.m. to 5:00 p.m. CST. Having the Model Number and Serial Number of your machine available when you call will allow us to serve you quickly and accurately. Non-proprietary parts, such as fasteners, can be found at local hardware stores, or may be ordered from JET. Some parts are shown for reference only, and may not be available individually.
GHD-20PF/20PFT Head Assembly 17
Parts List – GHD-20PF/20PFT Head Assembly Index No. Part No. Description Size Qty 40 .............. GHD20PF-40 ............ Screw ....................................................................... 3/16” x 3/8” .................... 1 42 .............. 61105 ........................ Spring Base ............................................................. ...................................... 1 43 .............. GHD20PF-43 ............ Spring Pin .....................................................
Index No. Part No. Description Size Qty 123 ............ GHD20-123 ............... Screw ....................................................................... ...................................... 4 124 ............ GHD20-124 ............... Lamp Assembly ....................................................... ...................................... 1 125 ............ TS-2284352 .............. Pan Head Screw ...................................................... M4x35L .........................
Index No. Part No. Description Size Qty 350 ............ 2450096 .................... Clutch Screw............................................................ ...................................... 1 351 ............ 2450095 .................... Clutch Nut ................................................................ ...................................... 1 352 ............ 2450068G ................. Gear Box.................................................................. ..........................
GHD-20/20T Head Assembly 21
Parts List – GHD-20/20T Head Assembly Index No. Part No. Description Size Qty 11 .............. 2401011G ................. Head Casting ........................................................... ...................................... 1 12 .............. 6112 .......................... Rubber Gasket......................................................... ...................................... 1 13 .............. 6513 .......................... Feed Base .................................................
Index No. Part No. Description Size Qty 90 .............. GHD20-90 ................. C-Ring...................................................................... ...................................... 2 92 .............. 6192 .......................... Block ........................................................................ ...................................... 1 93 .............. 6193 .......................... Nut ........................................................................... .....
Gear Assembly GHD-20PF, 20PFT 24
Parts List – Gear Assembly GHD-20PF, 20PFT Index No. Part No. Description Size Qty 1….…... …2401001-2 .................. Main Shaft Cover ..................................................... ...................................... 1 2 ................ GHD20-28 ................. Oil Seal .................................................................... ...................................... 1 3 ................ 6101-2 ....................... Chuck Arbor Bolt............................................
Gear Assembly GHD-20/20T 26
Parts List – Gear Assembly GHD-20/20T Index No. Part No. Description Size Qty 1….…... …2401001-2 .................. Main Shaft Cover ..................................................... ...................................... 1 2 ................ 6101-2 ....................... Chuck Arbor Bolt...................................................... MT-3 ............................. 1 4 ................ GHD20-4 ................... Retainer Ring ...........................................................
Base, Table and Column Assembly (all models) 28
Parts List – Base, Table and Column Assembly (all models) Index No. Part No. Description Size Qty 201 ............ 62201 ........................ Base......................................................................... ...................................... 1 202 ............ 62202 ........................ Bearing Cover (lower) .............................................. ...................................... 1 203 ............ 62203-1 ..................... Table ................................
Control Box Assembly (all models) 30
Parts List – Control Box Assembly Index No. Part No. Description Size Qty 401 ............ GHD20PFT-401…....... Control Box ............................................................ ...................................... 1 .................. GHD20PFT-CB ........... Control Box Complete (GHD-20PFT only) ............. ...................................... 1 .................. GHD20T-CB ................ Control Box Complete (#08050908 and higher) .... ...................................... 1 401-1 ....
Electrical Panel Components (GHD-20PFT) 32
Parts List – Electrical Panel Components (GHD-20PFT) Index No. Part No. Description Size Qty 1 ................ ET-1311 .................... Transformer ............................................................. 230V/24V ...................... 1 2 ................ ET-1814 .................... Fuse ......................................................................... 2A ................................. 1 3 ................ ET-1215 .................... Emergency Stop Switch........................
Electrical Schematic (GHD-20/20PF only) 34
Electrical Schematic (GHD-20PFT) 35
Electrical Schematic (GHD-20T) 36
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427 New Sanford Road LaVergne, Tennessee 37086 Phone: 800-274-6848 www.jettools.
