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Jet Geared Head Square Column Mill Drill
- $2,730.00
- Brands JET
- Product Code: 351045
- Availability: In Stock
JET Geared Head Square Column Mill/Drill Product Overview The JET Geared Head Square Column Mill/Drill is a versatile, heavy-duty machine designed for workshops that need both drilling and milling capability in one compact platform. Its rigid square-column construction, geared-head transmission, and substantial cast-iron table provide a stable foundation for general metalworking, fabrication, re..
Features of Jet Square Column Mill Drill Machine
JET Geared Head Square Column Mill/Drill
Product Overview
The JET Geared Head Square Column Mill/Drill is a versatile, heavy-duty machine designed for workshops that need both drilling and milling capability in one compact platform. Its rigid square-column construction, geared-head transmission, and substantial cast-iron table provide a stable foundation for general metalworking, fabrication, repair, and maintenance applications.
The machine combines the functionality of a drill press with the added versatility of a milling machine. An R8 spindle taper accommodates a wide range of standard milling tooling, while the tilting head allows the spindle to be positioned for angled machining.
Key Features
- Heavy-duty square-column construction for improved rigidity.
- 6-speed geared head provides direct mechanical power to the spindle.
- R8 spindle taper supports a wide selection of milling accessories.
- Power downfeed provides controlled quill movement for drilling and boring.
- Head tilts 90° left and right for angled machining applications.
- Large 9-1/2 x 32-1/4-inch worktable.
- Approximately 20-1/2 inches of longitudinal table travel.
- Approximately 8-1/4 inches of cross travel.
- 1.5 HP single-phase motor with 115/230V capability.
- Suitable for drilling, milling, boring, slotting, counterboring, and general machining.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | JET |
| Product Type | Geared-head square-column mill/drill |
| 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. |
| Spindle Speeds | 6 |
| Spindle Speed Range | Approximately 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. |
| T-Slots | 5/8 in. |
| Head Tilt | 90° left / 90° right |
| Motor Power | 1.5 HP |
| Voltage | 115/230V |
| Phase | 1 Phase |
| Drive Type | Geared head |
Specifications can vary between JET configurations and stock numbers. Verify the exact model/SKU when ordering, particularly for spindle-speed, power-feed, dimensions, and included-accessory specifications.
Geared-Head Drive
The machine's geared-head transmission transfers motor power mechanically to the spindle. This design provides the torque required for drilling and milling operations while allowing the operator to select from six spindle-speed settings.
The approximately 65–1,550 RPM speed range covers a useful selection of machining requirements, from slower speeds for larger tooling and heavier cuts to higher speeds for smaller cutters and suitable finishing operations.
Power Downfeed
The integrated power downfeed allows the spindle to move automatically at a controlled rate during drilling and related operations.
It is particularly useful for:
- Repetitive drilling
- Boring
- Counterboring
- Controlled-depth operations
- Production-oriented work
- Applications requiring consistent feed
A manual fine-feed mechanism also provides additional control when precise quill adjustment is required.
Square Column Construction
The square column with dovetail ways provides a rigid structure to support the head and spindle assembly. This rigidity is important when the machine is subjected to the cutting forces generated during milling and larger drilling operations.
The design is well suited to:
- Face milling
- End milling
- Slotting
- Boring
- Drilling
- Counterboring
- General material removal
Proper workholding and appropriate cutting parameters remain essential for maintaining accuracy and tool life.
R8 Spindle
The R8 spindle taper is a widely used milling-machine tooling standard. It gives operators access to a broad range of compatible tooling, including:
- R8 collets
- End mills
- Drill chucks
- Boring tools
- Face mills
- Other compatible milling accessories
The published capacities are approximately 1-1/2 inches for drilling, 4 inches for face milling, and 3/4 inch for end milling.
Actual cutting capacity will depend on the workpiece material, cutter type, spindle speed, feed rate, depth of cut, and workholding.
Tilting Head
The head can tilt 90° to either side, allowing the spindle to be positioned for angled machining.
This capability can be useful for:
- Angled holes
- Beveled surfaces
- Angular milling
- Specialized fixtures
- Non-standard machining setups
The head should always be securely locked before operating the spindle.
Worktable and Travel
The machine features a 9-1/2 x 32-1/4-inch worktable, providing ample space for mounting a vise, clamps, fixtures, and workpieces.
The approximately 20-1/2-inch longitudinal travel and 8-1/4-inch cross travel allow the operator to reposition the workpiece under the spindle without repeatedly changing the basic setup.
The table's T-slots provide convenient mounting points for compatible workholding accessories.
Motor and Electrical Configuration
A 1.5 HP single-phase motor powers the machine. The 115/230V configuration provides installation flexibility for workshops equipped with compatible electrical service.
The machine should be wired for the appropriate voltage before use. Electrical installation should comply with JET's requirements and applicable local electrical codes.
Typical Applications
The JET Geared Head Square Column Mill/Drill is suitable for:
- Professional machine shops
- Fabrication shops
- Maintenance departments
- Equipment repair
- Tool rooms
- Prototype development
- Small-batch machining
- General metalworking
- Technical and vocational training
It is particularly useful where a standard drill press does not provide sufficient rigidity or milling capability.
Common Machining Operations
Drilling
Produce holes using drills matched to the workpiece material and selected spindle speed.
Milling
Remove material from surfaces, edges, and workpiece features using suitable milling cutters.
Boring
Enlarge and finish existing holes to the required diameter.
Slotting
Create slots and channels using appropriate end mills.
Face Milling
Machine flat surfaces with a compatible face mill.
Counterboring
Create stepped holes for fasteners and other components.
Angled Machining
Use the tilting head for suitable angular operations.
Benefits for Professional Users
Rigid Construction: The square-column design provides a stable platform for demanding machining.
Geared-Head Power: Mechanical gearing delivers useful spindle torque across six speed selections.
Power Downfeed: Automatic quill movement helps improve consistency during repetitive drilling.
R8 Tooling: The standard R8 taper offers broad tooling compatibility.
Tilting Head: 90° left/right adjustment increases machining versatility.
Large Table: The 32-1/4-inch table provides useful working space for fixtures and larger workpieces.
Maintenance
Regular maintenance helps preserve the machine's accuracy and operating life.
Periodically inspect:
- Spindle and bearings
- Gear head
- Quill and downfeed mechanism
- Column and dovetail ways
- Table and T-slots
- Lead screws
- Electrical connections
- Lubrication points
Clean metal chips from the table and machine ways after each machining session. Lubricate the machine according to the manufacturer's recommended maintenance schedule.
Safety Considerations
Always wear appropriate eye protection when operating the mill/drill and use additional PPE appropriate to the material and machining process.
Secure every workpiece with an appropriate vise, clamp, or fixture. Never hold material by hand while drilling or milling.
Keep hands, loose clothing, jewelry, and hair away from rotating tooling.
Do not measure, adjust, reposition the workpiece, or remove chips while the spindle is rotating.
Disconnect the machine from its electrical supply before performing maintenance or changing tooling where required.
Why Choose the JET Geared Head Square Column Mill/Drill?
The JET Geared Head Square Column Mill/Drill combines the functionality of a heavy-duty drill press and milling machine into one versatile platform. Its square-column construction, geared-head drive, R8 spindle, power downfeed, tilting head, large worktable, and 1.5 HP motor make it a practical choice for professional and serious workshop applications.
For users performing drilling, milling, boring, slotting, counterboring, and general metalworking, this machine provides the flexibility of a multi-purpose machining platform while retaining the rigidity and control needed for demanding work.