Jet GHD-20 Operator's Manual
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Jet GHD-20 Operator's Manual

Gear head drill/tap
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.JET
EQUIPMENT
& TOOLS
OPERATOR'S MANUAL
GHD-20/20T/20PF/20PFT
Gear Head Drill/Tap
(GHD-20PFT
shown)
JET EQUIPMENT£ TOOLS, INC.
A WMH Company
www.jettools.com
P.O, 60X 1348
Auburn, WA98071-1349
e-mail jet@jettools.com
203-351-6000
Fax 253-939-8001
M-354026 4199

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Summary of Contents for Jet GHD-20

  • Page 1 .JET EQUIPMENT & TOOLS OPERATOR'S MANUAL GHD-20/20T/20PF/20PFT Gear Head Drill/Tap shown) (GHD-20PFT JET EQUIPMENT£ TOOLS, INC. P.O, 60X 1348 203-351-6000 A WMH Company Fax 253-939-8001 Auburn, WA98071-1349 www.jettools.com M-354026 4199 e-mail jet@jettools.com...
  • Page 3 JET will return repaired product or replacement at JET's expense, but if it is determined there is no defect, or that the defect resulted from causes not within the scope of JET's warranty, then the user must bear the cost of storing and returning the product. This warranty gives you specific legal rights, and you have other rights, which vary, from state to state.

  • Page 4: Warnings

    WARNING For your own safety, read the operator's manual before operating the drill press. Wear eye protection. Do not wear gloves, neckties, or loose clothing. Clamp the workpiece or brace it against the column to prevent rotation. Use the recommended speed for drill accessories and workpiece materials. KEEP GUARDS IN PLACE and in working order.
  • Page 5 WEAR PROPER APPAREL. Do not wear loose clothing, gloves, neckties, rings, bracelets, or other jewelry which may get caught in moving parts. Non-slip footwear is recommended. Wear protective hair covering to contain long hair. ALWAYS USE SAFETY GLASSES. Also use face or dust masks if the cutting operation is dusty. Everyday eyeglasses only have impact resistant lenses;...

  • Page 6: Table Of Contents

    """""""""" 33-35 The specifications in this manual are given as general information and are not binding. JET Equipment and Tools reserves the right to effect, at any time and without prior notice, changes or alterations to parts, fittings, and accessory equipment deemed necessary for any reason whatsoever.

  • Page 7: Contents Of Shipping Container

    2. Tighten the set screw (8, Fig. 1) to hold the crank in place. 3. Install the handle (C, Fig. 1) onto the crank. 4. For the GHD-20/20T, install three handle and knobs (A, Fig. 2) into the downfeed hub. For Fig. 2 the GHD-20PF/20PFT, screw two knobs onto the handles of the power downfeed assembly.

  • Page 8: Adjusting The Head Height

    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. WARNING The head assembly is very heavyl Use caution when adjusting the head and make sure it is supported by the table or locked in place.

  • Page 9: Controls

    Caution: Change speeds only when the machine is stopped. Depth Stop (GHD-20/20T)(E, Fig. 8) - located on the front bottom of the head assembly. When set, Fig. 8 the quill will only advance to a certain depth.

  • Page 10: Control Panel For Ghd-20T/20Pft

    -------------- Control Panel for GHD-20T/20PFT Low/Off/High Switch (A, Fig. 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, Fig. 9A) For drilling press start switch (F, Fig. 9A) to run the machine. Caution: The internal depth stop (GHD-20PFT) is used only with the tapping function.

  • Page 11: Electricalconnections

    Connections Electrical WARNING A quafified electrician must complete all electrical connections! All adjustments or repairs must be dOne with the drill disconnected from the power source! Failure to comply may result in serious injury! The motor is rated at 2 HP, 3 Ph, 230Vonly. Make sure the power available matches the power requirement of the drill.

  • Page 12: Adjusting Depth Stop For Drilling And Tapping (Ghd-20T)

    Adjusting Depth Stop for Drilling and Tapping (GHD-20T) 1. Follow steps for GHD-20 drilling 2. When the tapping switch is on. The limit switch switches are active and will reverse rotation at the bottom of the stroke and stop rotation at the Fig.

  • Page 13: Adjusting Depth Stop For Tapping (Ghd-20Pft)

    Adjusting the Depth Stop for Tapping (GHD- 20PFT) 1. Loosen the depth stop lock handle (A, Fig. 12) so it does not interfere with the internal depth stop located on the front of the drill head. 2. Adjust the front depth stop for the proper depth. 3.

  • Page 14: Tilting The Head

    Tilting the Head To tilt the head: 1. Turn nut (A, Fig. 15) clockwise to pull out the alignment pin (B, Fig. 15). 2. Loosen hex nuts (C, Fig. 15). 3. Tilt the head to the desired angle. 4. Tighten two hex nuts (C, Fig. 15). 5.
  • Page 15 6. Place a container on the table to catch the draining lubricant. 7. Remove the filler plug (A, Fig. 18). 8. Remove the drain plug. 9. Replace the drain plug after the lubricant has finished draining. 10. Pour one (1) gallon of new lubricant (Mobil DTE@Oil Heavy Medium) through the filler hole.

  • Page 16: Troubleshooting

    Troubleshooting Problem Probable Cause Solution Excessive vibration Motor out-of-balance. Balance motor or replace. Reduce feed rate. Over feeding. Sharpen drill bit. Dull drill bit. Motor stalls Replace or repair motor. Motor not running up to Check fuses in all three legs speed.

  • Page 17: Parts Breakdown & Parts List

    Parts List for the GHD.20/20T/20PF/20PFT Gear Head Drills Head Assembly - GHD-20PF/20PFT Index Part Size Qty. Description ..Screw 3/16 x 3/8 GHD20PF-40 Spring Base ..61105 GHD20PF-43 Spring Pin " 3 x 12 GHD20PF-44 Screw 3/16 x 3/4 45 .,. 61104 Spring "...
  • Page 18 8125-2 Collar """"""""""" """'" """"" "'"'''''' '''''''''''''''''''''''''''''' 122 .. 61112 Cover Plate Screw GHD20-123 '"'''''''''''''''' "'''''''''''''''' TS-Q561 071 Hex Nut 150 . TS-068oo81 Washer ""''''''''''''''''''''''''''''''""", ..2450001 .HeadBody Cover ""'''''''''''''''''''''''''''''' 2450002 Head Body Casting .2450008 """ Worm Gear ""'" """""""""'''''''''''' TS-1523011 Set Screw M6x 6 ''''''''''''''''''...
  • Page 19 .2450096 Clutch Screw .2450095 Clutch Nut """""""'"'''''''''''''' .2450068 Gear Box 353 .., ,..2450081 Gear Shaft "'"'''''''''''' 354 ..2450082A Speed Change lever.. .2450083A Stop " ..245OO84A " Spring leaf '"'''''''''''' GHD20PF-357 Pin ... ,...,..' ..,2 ..245OO89A Bushing Bracket.. 359 .,...,245OO72A Bearing Bushing.. 360 ..
  • Page 20 Head Assembly for GHD-20PF/20PFT '\J'~ ..
  • Page 21 GHD-20/20T Head Assembly Index Part Size Qty. Description .2401011 Head Casting .6112 Rubber Gasket .6513 Feed Base. .6114 Lock Nut BB-30206 Taper Roller Bearing ""' .6116 Rack Sleeve '"'''''''''''''''''''''''' .6117 Spindle Shaft .BB-30207 Taper Roller Bearing ..6119 Bearing Cap..""""""""'"...
  • Page 22 ,6193.., "..., , Nut " "'''''''''' .6195 Support Base .."..6195 ...,.. Knob Assembly., ...,.., ... ,. '..1 .GHD20-96 .. ., ,. , Oil Seal """" ,.."""'" ""'" "'" ...2 61101, Bracket 102 ..., ..611 02,., , limit Plate ".""'"...
  • Page 23 GHD-20/20T Head Assembly 187-1 1if'92 1'54 ..(117 ~76-1...
  • Page 24 GHD-20PFJ20PFT GoarAssembly Index Part Size Description Qty. .2401001-2 Main Shaft Cover """""""'''''''''' GHD20-28 Oil Seal .6101-2 Chuck Arbor Bolt.. MT3.. GHD20-4 ..Retainer Ring... '"'''' R68 GHD20PF-5 Retainer Ring .BB-6008ZZ Ball Bearing ..2401 006 Idle Gear Oil Seal GHD20-7 Oil SealRing ..2401008 """'"...
  • Page 25 12 612 ::E: "'0 "T1 "'0 "T1 c..u I» ~,/'...
  • Page 26 GHD-20/20T Gear Assembly Index Part Size Description Qty. 2401001-2 Main Shaft Cover ,...1 .6101-2 """"'''''''''''''''''' Chuck Arbor BoiL GHD20-4 C-Ring BB-6008ZZ .." Ball Bearing .2401 006 Idle Gear 6-1 . GHD20-6-1 C-Ring """"'" GHD20-7 "'''''''''''''''''''''''' Oil Seal 2401008 Oil Seal Ring...
  • Page 27 32-1 (j) CD I» ... ~ tn o<...
  • Page 28 GHD.20/20T/20PF/20PFT Base,Table,andColumnAssembly Index Part Size Qty. Description ..62201 Base "..1 62202 Bearing Cover (lower) .62203-1 Table... " .SB-3/8 Steel Ball 62213 Bearing Cover (uppe() .62214 ...,.. Screw """"'" .TS-0561 021 , Hex Nut.." 5/16 62216 Column Base ..66217 Lock Ring 218 ..
  • Page 29 GHD-20/20T/20PF/20PFT Base,Table and ColumnAssembly ~243...

  • Page 30: Control Box Assembly & Parts List

    Limit Support (top) (GHD-20T) GHD20PFT-404 Round Head Screw (GHD-20TI20PFT) 3/16"x5/8" ET-1610 Limit Block (GHD-20T/20PFT) GHD20PFT-406 Round Head Screw (GHD-20T/20PFT) M3x15 GHD20PFT-407-1 Limit Support (bottom) (GHD-20PFT) GHD20PFT-407-2 Limit Support (bottom) (GHD-20T) GHD20-339 " High-Low Switch (GHD-20/20PF) GHD20-340 " Round Head Screw (GHD-20/20PF) M4x20...
  • Page 31 Control Box Assembly «) (GHD-20T/20PFT only) (GHD-20/20PF only)
  • Page 32 GHD-20T/20PFT Electrical Panel Index Part Size Description QtJ. ET-1311 , Transformer ET-1814 Fuse """"""""""""" ET-1215 Emergency Switch ..ET-1217..: Start Switch... ET-1221 Reverse Switch.."""" ET-1223 Selecting Switch RSA-24A Control Relay (include. R2, R3, R4, R5, R6, R7)(20PFT) RSA-24B Control Relay (include. R1, R2, R3, R4, R5, R6)(20T) .ET -2003A Overload(20PFT) """""'"...

  • Page 33: Electrical Panel Components (Ghd-20Tand 2Opft)

    Electrical Panel Components (GHD-20PFT) High off Low OutPut FUSE "2 Upper LIGHT Lower I -----r-- Power 13-1 Com Switch Irput...
  • Page 34 Electrical Panel Components (GHD-20T) High off Low Out Put ~_:J Upper LI GHT iDOi Trasfa1rer L.!::: ""T ::!J Lower Can Switch Power...

  • Page 35: Electrical S Chematic

    Electrical Schematic (GHD-20/20PFonly) 1 RED -+-- WHITE WHITE BLACK -1--1 (..) (..) BLACK YELLOW BROWN BLUE MOTOR 2P/4P...
  • Page 36 CAM Switch 3'" Overbad """4 220V KM1(A) MOTOR ~=r8S KM2(8) FUSE GrOllld DC CONTROL LIGHT ,- S82---------- ...-. 'START C") ------------- DRILLING TAPPING OUTPUT .- .. LOWER I UPPER...
  • Page 37 SWitch 0verb00 220V Y... t,jOTOR Switch EmIrgencySicp, Lign CJ1d Liglt GrW"d Switch AC220 !24V rTT1 FLaB 9 5 5 1 fs R Y\\vsrl 12131GV 15 8 7 l2JcJ ""u Upper Lnit Switch >-oG >-oT S '(,) Lower Unit Switch .s::. DC Cootrol Wiring .- ..

This manual is also suitable for:

Ghd-20pfGhd-20pftGhd-20t

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