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Jet Geared Head Mill Drill With Power Downfeed and DRO
- $3,184.00
- Brands JET
- Product Code: 351146
- Availability: In Stock
JET Geared Head Mill/Drill with Power Downfeed & Newall DP500 2-Axis DRO Product Overview The JET Geared Head Mill/Drill with Power Downfeed & Newall DP500 2-Axis DRO is a heavy-duty machine designed for precision drilling, milling, boring, and general metalworking. It combines a 6-speed geared head, automatic power downfeed, and Newall DP500 2-axis digital readout to give operators bett..
Key Features of Jet Mill Drill With Newall DP500 Two Axis DRO
JET Geared Head Mill/Drill with Power Downfeed & Newall DP500 2-Axis DRO
Product Overview
The JET Geared Head Mill/Drill with Power Downfeed & Newall DP500 2-Axis DRO is a heavy-duty machine designed for precision drilling, milling, boring, and general metalworking. It combines a 6-speed geared head, automatic power downfeed, and Newall DP500 2-axis digital readout to give operators better control over spindle movement and workpiece positioning.
This configuration is based on the JET JMD-45GHPF, Item No. 351160, which features a rigid square-column design, R8 spindle, 1.5 HP motor, and a large 9-1/2 x 32-1/4-inch table. The machine is designed for demanding workshop and production-oriented applications.
Key Features
- Heavy-duty square-column construction with dovetail ways.
- 6-speed geared head delivers mechanical power directly to the spindle.
- Power downfeed provides controlled automatic quill movement.
- Newall DP500 2-axis DRO provides digital X/Y positioning information.
- R8 spindle taper accepts a broad range of milling tooling.
- Head tilts 90° left and right for angled machining.
- Large cast-iron worktable for workpieces, vises, and fixtures.
- Built-in calibrated fine downfeed.
- Easy-to-read internal depth gauge.
- Quick-select gear levers for faster spindle-speed changes.
- Spindle guard and work lamp included.
- 1.5 HP, 115/230V, single-phase motor.
- CSA/CUS certified configuration.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | JET |
| Model | JMD-45GHPF |
| Item Number | 351160 |
| Machine Type | Square-column geared-head mill/drill |
| Digital Readout | Newall DP500 2-Axis DRO |
| Power Downfeed | Yes |
| Drilling Capacity | 1-1/2 in. |
| Face Mill Capacity | 4 in. |
| End Mill Capacity | 3/4 in. |
| Swing | 19-11/16 in. |
| Maximum Spindle-to-Table Distance | 18-1/8 in. |
| Spindle Taper | R8 |
| Spindle Travel | 5 in. |
| Automatic Spindle Travel | 4-1/4 in. |
| Quill Diameter | 3 in. |
| Column Size | 7-7/8 x 7-5/8 in. square |
| Spindle Speeds | 6 |
| Spindle Speed Range | 65–1,550 RPM |
| Table Size | 9-1/2 x 32-1/4 in. |
| Longitudinal Table Travel | 20-1/2 in. |
| Cross Table Travel | 8-1/4 in. |
| Head Tilt | 90° Left / 90° Right |
| T-Slots | 5/8 in. |
| Motor | 1.5 HP |
| Voltage | 115/230V |
| Phase | 1 Phase |
| Overall Length | 29 in. |
| Overall Height | 50 in. |
| Approx. Machine Weight | 655 lb. |
| Stand Included | No |
The published JET configuration specifies six spindle speeds from 65–1,550 RPM, a 1-1/2-inch drilling capacity, 20-1/2-inch X-axis travel, 8-1/4-inch Y-axis travel, and a 1.5 HP, 115/230V single-phase motor.
Geared Head Performance
The 6-speed geared head transfers motor power mechanically to the spindle, providing useful torque for both drilling and milling.
The 65–1,550 RPM range gives the operator multiple speed choices for different cutter diameters and workpiece materials. Lower speeds can be used for larger tooling and heavier cuts, while higher speeds are suitable for smaller cutters when permitted by the tooling and material.
Quick-select gear levers make spindle-speed changes straightforward.
Power Downfeed
The integrated power downfeed provides automatic spindle movement during drilling and related operations. This can help produce more consistent feed rates than manually controlling the quill throughout the cut.
Power downfeed is useful for:
- Repetitive drilling
- Boring
- Counterboring
- Controlled-depth operations
- Production work
- Consistent hole-making
A calibrated fine downfeed is also incorporated for situations where more precise manual spindle control is required.
Newall DP500 2-Axis DRO
The Newall DP500 2-axis digital readout provides digital position feedback for the machine's table axes.
It can simplify:
- Hole-location work
- Repeated machining dimensions
- Slot and pocket positioning
- X/Y coordinate setup
- Returning to established positions
- Monitoring table movement during machining
The DRO is particularly useful when several features must be positioned consistently across a workpiece.
Square-Column Construction
The machine uses a square column with dovetail ways, providing a rigid foundation for the head and spindle assembly. This construction is intended to provide the stability needed for precision drilling and milling in demanding applications.
The rigid structure is well suited for:
- Face milling
- End milling
- Slotting
- Boring
- Drilling
- Counterboring
- General stock removal
R8 Spindle
The R8 spindle taper is a widely used milling-machine tooling standard. It allows operators to select from a broad range of compatible collets, chucks, end mills, and other milling accessories.
The machine is specified for up to:
- 1-1/2-inch drilling
- 4-inch face milling
- 3/4-inch end milling
Actual machining capacity depends on the material, cutter geometry, spindle speed, feed rate, depth of cut, and workholding.
Tilting Head
The head tilts 90° to the left and 90° to the right, allowing the spindle to be positioned for angled machining operations.
This can be useful for:
- Angled holes
- Beveled surfaces
- Angular milling
- Specialized fixtures
- Non-standard machining setups
The head should always be properly secured before operating the machine.
Worktable and Travel
The 9-1/2 x 32-1/4-inch worktable provides a substantial surface for mounting workpieces, vises, clamps, and fixtures.
Available table movement includes:
- 20-1/2 inches longitudinal travel
- 8-1/4 inches cross travel
This travel range allows the operator to reposition workpieces under the spindle while maintaining the basic setup.
Motor and Electrical System
The machine is powered by a 1.5 HP single-phase motor with a 115/230V configuration. This provides flexibility for workshops equipped with compatible electrical service.
The machine should be correctly configured for the intended supply voltage before operation. Electrical installation should follow JET's requirements and applicable local electrical codes.
Typical Applications
The JET Geared Head Mill/Drill is suitable for:
- Machine shops
- Fabrication shops
- Maintenance departments
- Equipment repair
- Tool rooms
- Prototype machining
- Small-batch production
- General metalworking
- Industrial maintenance
Its combination of geared-head power, power downfeed, and digital position feedback makes it especially useful for applications requiring repeatable drilling and milling operations.
Common Machining Operations
Drilling
Produce holes with suitable drill tooling and controlled power downfeed.
Milling
Remove material from surfaces and edges using compatible milling cutters.
Boring
Enlarge and finish existing holes with controlled spindle movement.
Face Milling
Produce flat surfaces using an appropriate face mill.
Slotting
Machine channels and slots with suitable end mills.
Counterboring
Create stepped holes for fasteners and other components.
Angled Machining
Use the tilting head for appropriate angular machining operations.
Advantages for Professional Users
Digital Position Feedback
The Newall DP500 DRO makes X/Y positioning easier to monitor and repeat.
Controlled Spindle Feed
Power downfeed helps provide consistent spindle movement during repetitive drilling and boring.
Geared-Head Power
Six spindle speeds provide useful mechanical power across a range of machining tasks.
Rigid Construction
The square column and dovetail ways provide a stable machining platform.
R8 Tooling Compatibility
The R8 spindle accommodates a wide selection of commonly available milling tooling.
Large Worktable
The 32-1/4-inch table provides useful space for fixtures and larger workpieces.
Maintenance
Regular maintenance helps preserve machine accuracy and service life.
Inspect and maintain:
- Spindle and bearings
- Gear head
- Quill and power-downfeed mechanism
- Column and dovetail ways
- Table and T-slots
- Lead screws
- DRO scales and cables
- Electrical connections
- Lubrication points
Remove metal chips from the table and ways after machining. Keep the DRO scales clean and protected from chips, coolant, and other contaminants.
Follow the manufacturer's recommended lubrication and maintenance procedures.
Safety Considerations
Always wear appropriate eye protection and use additional PPE required for the material and operation.
Secure workpieces firmly using an appropriate vise, clamp, or fixture. Never hold material by hand during milling or drilling.
Keep hands, loose clothing, jewelry, and hair away from rotating tooling and moving machine components.
Do not measure, adjust, reposition workpieces, or remove chips while the spindle is rotating.
Disconnect the machine from its electrical supply before performing maintenance or servicing electrical or moving components.
Why Choose the JET Geared Head Mill/Drill?
The JET Geared Head Mill/Drill with Power Downfeed & Newall DP500 2-Axis DRO combines rigid square-column construction, a 6-speed geared head, automatic power downfeed, digital X/Y positioning, R8 tooling compatibility, and a large worktable in one professional metalworking machine.
With its 1.5 HP motor, 65–1,550 RPM spindle range, 1-1/2-inch drilling capacity, 4-inch face-mill capacity, and 90° head tilt, it provides a versatile platform for drilling, milling, boring, slotting, counterboring, and general machining applications.