This .pdf document is bookmarked Operating Instructions and Parts Manual Geared Head Mill-Drill Machines Models: JMD-40GH, JMD-40GHPF, JMD-45GH, JMD-45GHPF JMD-40GH JMD-45GHPF JET 427 New Sanford Road LaVergne, Tennessee 37086 Ph.: 800-274-6848 www.jettools.com Part No.
some cases, cancer. (California Health and Safety Code Section 25249.5 et seq.) 11. Make certain the switch is in the OFF position before connecting the machine to the power supply. 1.0 IMPORTANT SAFETY INSTRUCTIONS 12. Make certain the machine is properly grounded. 13. Make all machine adjustments or maintenance with the machine unplugged from the power source. WARNING – To reduce risk of injury: 1. Read and understand the entire owner's manual before attempting assembly or operation. 2.
26. Maintain tools with care. Keep cutters sharp and clean for the best and safest performance. Follow instructions for lubricating and changing accessories. 33. Don’t use in dangerous environment. Don’t use power tools in damp or wet location, or expose them to rain. Keep work area well lighted. 34. All work shall be secured using either clamps or a vise to the drill press table. It is unsafe to use your hands to hold any workpiece being drilled. 27. Turn off the machine before cleaning.
2.0 Table of contents Section Page 1.0 IMPORTANT SAFETY INSTRUCTIONS ....................................................................................................... 2 1.1 Switch lock-out ........................................................................................................................................... 3 2.0 Table of contents ............................................................................................................................................ 4 3.
3.0 About this manual This manual is provided by JET, covering the safe operation and maintenance procedures for the JET JMD40GH and JMD-45GH series Geared Head Mill-Drills. This manual contains instructions on installation, safety precautions, general operating procedures, maintenance instructions and parts breakdown. Your machine has been designed and constructed to provide consistent, long-term operation if used in accordance with the instructions as set forth in this document.
4.0 Specifications Table 1 Model number Stock number Motor and Electricals Motor type Horsepower Phase Voltage Cycle Listed FLA (full load amps) Starting amps Running amps (no load) Start capacitor Motor speed Motor cord Power cord Power plug installed LED work lamp Recommended circuit size 1 Sound emission without load 2 Capacities Spindle taper Spindle rotation Mild steel Drilling capacity Cast iron Face mill capacity End mill capacity Swing Max.
JMD-40GH JMD-40GHPF 28 x 39-1/4 x 42-1/2 in. (709 x 995 x 1079 mm) 29-3/4 x 37-1/2 x 49 in. (755 x 950 x 1242 mm) Overall assembled (LxWxH) Shipping dimensions (LxWxH) Weights Net weight Shipping weight 628 lb (285 kg) 694 lb (315 kg) 655 lb (297 kg) 721 lb (327 kg) JMD-45GH JMD-45GHPF 29 x 36 x 50 in. (736 x 914 x 1270 mm) 36 x 30 x 52 in. (915 x 763 x 1320 mm) 728 lb (330 kg) 794 lb (360 kg) 754 lb (342 kg) 820 lb (372 kg) 1 subject to local and national electrical codes.
5.2 Tools required for assembly Read and understand all assembly and setup instructions before attempting assembly. Failure to comply may cause serious injury. Cross-point (Phillips) screwdriver 14mm open-end (or adjustable) wrench 3mm and 5mm hex wrenches (provided) 5.3 Unpacking and cleanup 5.0 Setup and assembly 1. Inspect contents for shipping damage. Report damage, if any, to your distributor. Do not discard shipping materials until Mill-Drill is installed and running properly. 2.
4. Slide handwheels (A) onto shafts at front and both ends of table. If needed, tap with rubber mallet to seat handwheels onto shafts. Tighten set screws. 5. Thread handle (D) onto each handwheel and tighten nut. 6. Loosen lock handles/nuts (Q or R, Figure 7-2) and raise head using crank (E) to remove shipping block from table. necessary, do not connect the equipment-grounding conductor to a live terminal.
6.2 Voltage conversion 4. To convert machine to 230 volt operation: 1. Change incoming power leads according to wiring diagram on inside cover of motor junction box. 2. Replace plug on end of motor cord with a UL/CSA listed plug rated for 230V; or hardwire the machine. Tap drawbar head with rubber mallet to dislodge arbor. Do not loosen drawbar more than 3 or 4 turns before hitting with rubber mallet. Damage to drawbar threads may occur. 5.
7.4 Gib adjustments 7.4.1 Table gibs See Figure 7-3. Gibs have been properly adjusted by the manufacturer. After a period of time, however, movement of the table over the ways will cause normal wear and some “play” between components. To adjust gibs to eliminate this play, proceed as follows. 1. The X-axis gib adjustment screw (XG, Figure 73) is found on right side of saddle beneath table. The Y-axis gib adjustment screw (YG, Figure 73) is found to the right on the table face. 2.
8.0 Operation 8.1 Operating controls Refer to Figure 8-1 (non-powerfeed models) or Figure 8-2 (powerfeed models). Depth stop and scale. Non-powerfeed models: Turn knurled knob (A1) until pointer (A2) reaches desired mark on scale. Powerfeed models: Turn scale (A3) to desired depth, and tighten lock handle (A4). Downfeed handle (B). Counterclockwise movement advances quill toward table. When released, return spring retracts quill.
9. To stop feed before cycle has ended, push handle (B) toward head. (N and O, Figure 5-1). Install arbor into spindle using procedure in sect. 7.1. NOTE: Set downfeed dial (H) to zero when not using powerfeed. For best results, all milling operations should be performed with cutter raised as close to head assembly as possible. 8.3 Manual coarse feed 1. Adjust depth stop to highest position. Non-powerfeed models (Figure 8-1): 2. Engage fine feed handwheel, and turn it to set milling height. 3.
9.3 Lubrication Note: Spindle bearings are sealed and do not require further lubrication.
10.0 Troubleshooting JMD-40GH/45GH series Mill-Drills Symptom Possible Cause Correction* Motor will not start. Low voltage. Check power line for proper voltage. Open circuit in motor or loose connection. Overload has tripped. Inspect all lead connections on motor for loose or open connections. Press reset button on junction box, and retry. Inspect switch, replace if needed. Switch failure. Motor will not start: fuses blow or circuit breakers trip. Motor overheats.
Symptom Possible Cause Correction* Excessive vibration or noise. Loose motor fan. Inspect and tighten. Spindle improperly lubricated. Maintain proper machine lubrication. Spindle runout or loosening due to bearing misadjustment or failure. Motor imbalance. Inspect spindle elements, such as bearings and lock nuts; adjust or replace. Repair or replace motor. Dull cutting tool. Sharpen or replace. Insufficient feed rate. Increase feed rate.
12.1.
12.1.2 JMD-40GH,-40GHPF Table, Base, and Column Assembly – Parts List Index No. Part No. Description Size Qty 601 ............ JMD18-228G ............. Table ........................................................................ 31L ................................ 1 602 ............ JMD18-229................ Fixed T-Block ........................................................... ...................................... 2 603 ............ JMD18-230................ Stop Ring ...........................
Index No. Part No. Description Size Qty 642 ............ TS-0720131 .............. Lock Washer ............................................................ 5/8” ................................ 5 643 ............ TS-0208022 .............. Hex Socket Head Cap Screw .................................. 5/16”-24x1/2” ................ 2 644 ............ JMD18N-644 ............. Lock Washer ............................................................ 5/16” .............................. 3 645 ............
12.2.
12.2.2 JMD-40GH,-45GH (non-powerfeed) Gear Head Assembly – Parts List 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 76-1 ........... 2401076-1 ................. Pointer ..................................................................... ...................................... 1 77 .............. GHD20-77 ................. Screw ....................................................................... ...................................... 2 79 .............. 2412001G ................. Casting..................................................................... ..................
Index No. Part No. Description Size Qty 188 ............ GHD20-188 ............... Screw ....................................................................... 3/16” x 3/8” .................... 1 249 ............ GHD20-249 ............... Rivet......................................................................... ...................................... 2 287 ............ GHD20-287 ............... Spring Pin ................................................................ Ø4x16Lmm ...................
12.3.
12.3.2 JMD-40GH,-45GH (non-powerfeed) Gears Assembly – Parts List Index No. Part No. Description Size Qty 1 ................ 2401001-2 ................. Main Shaft Cover ..................................................... ...................................... 1 3 ................ JMD40GH-03 ............ Draw Bar .................................................................. 7/16” .............................. 1 4 ................ GHD20-4 ................... Retainer Ring, Internal ..............
12.4.
12.4.2 JMD-40GHPF,-45GHPF (powerfeed) Gear Head Assembly – Parts List 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 106 ............ GHD20PF-106 .......... Oil Plug .................................................................... ...................................... 1 107 ............ TS-0209081 .............. Hex Socket Head Cap Screw .................................. 3/8”-16 x 3/4" ................ 6 108 ............ GHD20PF-108 .......... Miter Pin................................................................... ...................................... 2 109 .........
Index No. Part No. Description Size Qty 291 ............ 2450051 .................... Pin............................................................................ ...................................... 1 293 ............ HP309 ....................... Taper Pin ................................................................. M6xø7 (1:48) ................ 1 313 ............ 2450063 .................... Handle ..................................................................... .......................
12.5.
12.5.2 JMD-40GHPF,-45GHPF (powerfeed) Gears Assembly – Parts List Index No. Part No. Description Size Qty 1 ................ 2401001-2 ................. Main Shaft Cover ..................................................... ...................................... 1 2 ................ GHD20-28 ................. Oil Seal .................................................................... ...................................... 1 3 ................ JMD45GH-03 ............ Draw Bar ..........................
12.6.
12.6.2 JMD-45GH,-45GHPF Table and Base Assembly – Parts List Index No. Part No. Description Size Qty 601 ............ JMD18-228G ............. Table ........................................................................ 31L ................................ 1 602 ............ JMD18-229................ Fixed T-Block ........................................................... ...................................... 2 603 ............ JMD18-230................ Stop Ring ....................................
* Contents of JMD40GH-AP Accessory Package: .................. JMD18-020................ Cutter Arbor ............................................................. ...................................... 1 .................. JMD18-022................ Handle ..................................................................... ...................................... 4 .................. JMD18-039................ Handle Rod .............................................................. .........................
12.7.
12.7.2 JMD-45GH,-45GHPF Square Column Assembly – Parts List Index No. Part No. Description Size Qty 501 ............ JMD45GH-501 .......... Vertical Square Column ........................................... ...................................... 1 502 ............ JMD45GH-502 .......... Headstock Swivel Base ........................................... ...................................... 1 503 ............ JMD45GH-503 .......... Oil Cup .................................................................
13.0 Electrical Connections, JMD-40GH/45GH series 13.
13.
14.0 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.
427 New Sanford Road LaVergne, Tennessee 37086 Phone: 800-274-6848 www.jettools.
