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6
Introduction
This manual is provided by JET covering the safe operation and maintenance procedures for JET Model GHD-
20 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 years of trouble free operation if used in accordance with instructions set forth in this manual. If there
are any questions or comments, please contact either your local supplier or JET. JET can also be reached at
our web site: www.jettools.com.
Specifications
Model Number .....................................................
GHD-20
...............
GHD-20PF
...................
GHD-20T
............
GHD-20PFT
Stock Number ....................................................... 354020 ..................... 354024 ....................... 354022 .................... 354026
Drilling Capacity – Cast Iron (in.) .............................. 1-1/2 ......................... 1-1/ 2 .......................... 1-1/2 ........................ 1-1/2
Drilling Capacity – Mild Steel (in.)............................. 1-1/4 ......................... 1-1/ 4 .......................... 1-1/4 ........................ 1-1/ 4
Column Diameter (in.) ............................................... 4-1/2 ......................... 4-1/2 .......................... 4-1/ 2 ........................ 4-1/2
Quill Diameter (in.) .......................................................... 3 ............................... 3 ................................. 3 ...............................3
Swing (in.) ..................................................................... 20 ............................. 20 ............................... 20 ............................ 20
Number of Spindle Speeds ........................................... 12 ............................. 12 ............................... 12 ............................ 12
Range of Spindle Speeds (RPM)............[all models] Low: 60/130/230/450/800/1500; High: 120/260/460/900/1600/3000
Number of Power Downfeeds ...................................... n/a ............................... 3 .............................. n/a ...............................3
Range of Power Downfeeds ........................................ n/a ....0.004, 0.007, 0.01 .............................. n/a ... 0.004, 0.007, 0.01
Spindle Taper ............................................................ MT-3 .........................MT-3 .......................... MT-3 ........................ MT-3
Spindle Travel, manual (in.) ............................................ 5 ......................... 4-1/ 2 ................................. 5 ........................ 4-1/ 2
Spindle Travel, powerfeed (in.).................................... n/a ......................... 4-1/ 4 .............................. n/a ........................ 4-1/ 4
Maximum Distance Spindle to Table (in.) .............. 30-1/2 ....................... 30-1 /2 ........................ 30-1/2 ...................... 30-1/2
Maximum Distance Spindle To Base (in.) ............ 44-5/16 ..................... 44-5 /16 ...................... 44-5 /16 .................... 44-5 /16
Table Size (in.) .......................................... 21-3 /4 x 19-1/2 ........ 21-3/4 x 19-1/2 .......... 21-3/4 x 19-1/2 ........ 21-3/4 x 19-1/2
Table Travel (in.) ..................................................... 25-1/2 ....................... 25-1/2 ........................ 25-1 /2 ...................... 25-1/2
Table T-Slots ................................................................... 2 ............................... 2 ................................. 2 ...............................2
Table T-Slot Size (in.) .................................................. 5/8 ............................ 5/8 .............................. 5/8 ........................... 5/8
Table T-Slot Centers (in.) ............................................... 9 ............................... 9 ................................. 9 ...............................9
Work Table Weight Capacity (lbs.) ............................. 275 ........................... 275 ............................. 275 .......................... 275
Base Dimensions LxWxH (in.) ........................ 26 x 18 x 5 ............... 26 x 18 x 5 ................. 26 x 18 x 5 ...............26 x 18 x 5
Base Work Table (in.) ..................................... 15-1/4 x 13 ............... 15-1/4 x 13 ................ 15-1/4 x 13 .............. 15-1/4 x 13
Base T-Slots.................................................................... 2 ............................... 2 ................................. 2 ...............................2
Base T-Slot Size (in.) ................................................... 5/8 ............................ 5/8 .............................. 5/8 ........................... 5/8
Motor ..................................................................................[all models] TEFC 2HP, 3PH, 230V only, 60Hz, 2-speed
Overall Dimensions LxWxH (in.)................... 32 x 24 x 71 ............. 32 x 24 x 71 ............... 32 x 24 x 71 .............32 x 24 x 71
Net Weight (lbs.) ......................................................... 660 ........................... 660 ............................. 700 .......................... 700
The above specifications were current at the time this manual was published, but because of our policy of
continuous improvement, JET reserves the right to change specifications at any time and without prior notice,
without incurring obligations.