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Jet Geared Head Square Column Mill Drill with Power Downfeed
- $3,612.00
- Brands JET
- Product Code: 351160
- Availability: In Stock
JET Geared Head Square Column Mill/Drill with Power Downfeed and DP500 2-Axis DRO Product Overview The JET Geared Head Square Column Mill/Drill with Power Downfeed and DP500 2-Axis DRO is a heavy-duty combination milling and drilling machine designed for precision work in professional machine shops, fabrication facilities, maintenance departments, and production environments. Built around a rig..
Features of Jet Mill Drill with DP500 2-Axis DRO
JET Geared Head Square Column Mill/Drill with Power Downfeed and DP500 2-Axis DRO
Product Overview
The JET Geared Head Square Column Mill/Drill with Power Downfeed and DP500 2-Axis DRO is a heavy-duty combination milling and drilling machine designed for precision work in professional machine shops, fabrication facilities, maintenance departments, and production environments.
Built around a rigid square column with dovetail ways, the machine provides a stable platform for drilling, milling, boring, and other machining operations. Its 6-speed geared head delivers full mechanical power to the cutting tool, while the integrated power downfeed helps maintain a controlled, repeatable quill feed during drilling operations.
The included DP500 2-axis digital readout (DRO) provides digital position information for the machine's X and Y axes, making it easier to monitor table movement and improve positioning accuracy.
Key Features
- Heavy-duty square-column design with dovetail ways.
- 6-speed geared head delivers full power to the cutting tool.
- Power downfeed provides controlled automatic quill movement.
- Newall DP500 2-axis DRO displays X- and Y-axis positioning.
- Head tilts 90° left and right for angled machining operations.
- R8 spindle taper accepts a broad range of standard milling tooling.
- Quick-select gear levers allow rapid spindle-speed changes.
- Built-in calibrated fine downfeed for controlled manual adjustments.
- Spindle guard improves operator protection.
- Integrated work lamp helps illuminate the cutting area.
- 1.5 HP, 115/230V, single-phase motor.
- CSA/CUS certified for applicable electrical and safety requirements.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | JET |
| Machine Type | Geared-head square-column mill/drill |
| Product Series | JMD-45GHPF |
| Digital Readout | Newall DP500 2-Axis DRO |
| 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 | 7-7/8 x 7-5/8 in. square |
| Spindle Speeds | 6 |
| Spindle Speed Range | Varies by gear selection |
| Table Size | 9-1/2 x 32-1/4 in. |
| Table Longitudinal Travel | 20-1/2 in. |
| Table Cross Travel | 8-1/4 in. |
| Head Tilt | 90° left/right |
| Motor | 1.5 HP |
| Voltage | 115/230V |
| Phase | 1 Phase |
| Overall Dimensions | Approximately 29 x 36 x 50 in. |
| Machine Weight | Approximately 754 lb. |
| Stand Included | No |
| Certification | CSA/CUS |
The specifications above correspond to the square-column, geared-head, power-downfeed configuration with DP500 2-axis DRO. Published retailer data confirms the 754-lb. machine weight, 115/230V power, 20.5-inch X travel, 8.25-inch Y travel, 3-inch quill diameter, and 90° head tilt.
Geared-Head Power
Unlike belt-driven mill/drills, the JET uses a 6-speed geared head to transfer motor power directly through the mechanical gearing.
This design provides strong torque at the cutting tool and makes the machine suitable for applications requiring substantial material removal. Quick-select gear levers allow the operator to change between the available spindle-speed settings without relying on a continuously variable drive.
Power Downfeed
The integrated power downfeed is particularly useful for repetitive drilling and boring operations.
Instead of manually controlling the quill throughout the entire cut, the automatic feed can provide a more consistent feed rate. This can help improve repeatability when producing multiple holes or performing deeper drilling operations.
A calibrated fine downfeed is also provided for applications where the operator needs precise manual control.
DP500 2-Axis Digital Readout
The Newall DP500 2-axis DRO provides digital position information for the machine's table movements.
The readout can help the operator:
- Monitor X-axis movement.
- Monitor Y-axis movement.
- Position the workpiece more accurately.
- Reduce reliance on manual graduation readings.
- Repeat hole and feature locations more consistently.
- Simplify setup for multi-position machining.
The X-axis provides approximately 20.5 inches of longitudinal travel, while the Y-axis provides approximately 8.25 inches of cross travel.
Square Column and Dovetail Ways
The square column with dovetail ways provides a rigid structural arrangement for milling and drilling operations.
Compared with lighter-duty mill/drill designs, the heavy-duty column and cast-iron construction are intended to provide greater stability when the cutting tool is subjected to machining forces.
This rigidity is particularly valuable during:
- End milling
- Face milling
- Drilling
- Boring
- Slotting
- Counterboring
- Reaming
- General material removal
R8 Spindle
The machine uses an R8 spindle taper, a common tooling interface for milling machines.
R8 tooling provides flexibility when selecting compatible:
- End mills
- Collet systems
- Drill chucks
- Shell mills
- Boring accessories
- Other milling tooling
The published specifications list a 3/4-inch end-mill capacity and 4-inch face-mill capacity.
Adjustable Milling Head
The head can tilt 90° to the left and 90° to the right, allowing the spindle to be positioned for angled machining applications.
This capability expands the machine's usefulness beyond conventional vertical milling and drilling, although proper setup and workholding are essential when machining at an angle.
Drilling and Milling Capacity
The machine is designed for both drilling and milling applications, with published capacities including:
- 1-1/2-inch drilling capacity
- 4-inch face-mill capacity
- 3/4-inch end-mill capacity
Actual cutting capacity depends on the workpiece material, tooling, spindle speed, feed rate, depth of cut, and machine setup.
Worktable
The 9-1/2 x 32-1/4-inch table provides a substantial work surface for positioning fixtures and workpieces.
The approximately 20.5-inch longitudinal travel and 8.25-inch cross travel allow the operator to position the workpiece relative to the spindle without repeatedly repositioning the setup.
For larger or irregular workpieces, suitable clamping fixtures should be selected to maintain secure workholding throughout the operation.
Motor and Electrical Configuration
The machine uses a 1.5 HP single-phase motor with a 115/230V electrical configuration.
This provides flexibility for installation in shops with a compatible electrical supply. The correct voltage configuration should be established before connecting the machine.
Electrical installation, wiring, grounding, and circuit protection should comply with the machine's instructions and applicable local electrical codes.
Typical Applications
The JET square-column mill/drill is suitable for:
- Machine-shop work
- Fabrication
- Equipment repair
- Maintenance machining
- Prototype development
- General milling
- Precision drilling
- Boring
- Slotting
- Counterboring
- Small-batch production
- Technical and vocational training
Benefits for Professional Users
Rigid Square-Column Construction
Provides a stable structure for milling and drilling operations.
Geared-Head Drive
Delivers mechanical power through six spindle-speed settings.
Automatic Power Downfeed
Makes repetitive drilling and controlled quill feeding easier.
2-Axis Digital Readout
Provides convenient X/Y position monitoring for more precise setups.
R8 Spindle
Offers broad compatibility with commonly available milling accessories.
Adjustable Head
90° left/right head tilting expands the machine's machining versatility.
Maintenance
Regular maintenance is important for preserving the machine's accuracy and mechanical performance.
Inspect and maintain:
- Spindle and bearings
- Gear head
- Quill and feed mechanism
- Dovetail ways
- Table
- Lead screws
- DRO scales and cables
- Work light
- Spindle guard
- Electrical connections
- Lubrication points
Keep the table and ways clean of chips and abrasive debris. Lubricate the machine according to JET's maintenance recommendations, and avoid allowing cutting debris to accumulate around the DRO scales.
Safety Considerations
Always wear appropriate eye protection when operating the mill/drill. Hearing protection and other PPE should be used according to the machining operation and workplace requirements.
Secure the workpiece firmly before cutting, and use appropriate clamps or fixtures rather than holding material by hand.
Keep hands, clothing, jewelry, and hair away from the rotating spindle and tooling. Never attempt to measure, adjust, or reposition a workpiece while the spindle is rotating.
Remove the chuck key and other setup tools before starting the machine.
Disconnect the machine from its electrical supply before servicing, changing tooling, or performing maintenance that requires access to moving components.
Why Choose the JET Geared Head Square Column Mill/Drill?
The JET Geared Head Square Column Mill/Drill with Power Downfeed and DP500 2-Axis DRO combines the capabilities of a heavy-duty drill press and milling machine with features intended for more controlled and repeatable machining.
Its square-column construction, 6-speed geared head, power downfeed, R8 spindle, tilting head, large worktable, and Newall DP500 2-axis DRO make it a strong choice for professional users who need a versatile machine for precision drilling, milling, boring, and general metalworking.