Grizzly Milling Machine Manual

The Grizzly Milling Machine is a precision metalworking tool designed for drilling, cutting, and shaping metal workpieces. It features variable speed control, a robust column and base, a multi-directional worktable with T-slots, a quill feed with depth stop, a digital readout (on select models), and a comprehensive safety system including emergency stop and spindle guards. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Cast iron column and base, Motor and spindle assembly, Quill with fine feed handle, X-Y-Z axis handwheels, T-slotted worktable, Digital speed control, Coolant system port (on select models), Built-in work light.

Installation & Setup

Unpack and inspect all components for damage. Place on a solid, level floor.

1. Position the machine: Use a forklift or crane (with appropriate slings) to move the heavy base. Ensure the location is level and has adequate clearance for operation and material handling.
2. Level the machine: Use precision levels on the worktable. Adjust the leveling feet until the table is level in both X and Y axes.
3. Electrical connection: Connect to the specified power supply (e.g., 220V single-phase). Ensure the circuit has the correct amperage and a dedicated breaker. Ground the machine properly.
4. Lubricate: Apply way oil to all sliding surfaces (ways, leadscrews) and spindle oil as per the lubrication chart before first use.
5. Test run: Without a tool or workpiece, run the spindle at various speeds to ensure smooth operation. Check all axis movements.

WARNING! Machine is extremely heavy. Use proper lifting equipment and techniques. Never attempt to lift alone. Ensure the floor can support the combined weight.

Specifications

• Model: Grizzly Industrial Milling Machine (e.g., G0704, G0758).
• Table Size: 9" x 32" (approx., varies by model).
• Longitudinal Travel (X): 20".
• Cross Travel (Y): 7".
• Vertical Travel (Z/Quill): 5".
• Spindle Taper: R8.
• Spindle Speed Range: 0-2500 RPM (variable).
• Motor Power: 1 HP to 2 HP, 110V/220V single-phase.
• Net Weight: Approximately 600 lbs.
• Required Power: 220V, 20A circuit (typical).

Controls and Indicators

Main Control Panel: POWER switch, Emergency Stop, Speed Control Dial, Spindle Forward/Reverse switch.

Manual Controls: X-Axis handwheel, Y-Axis handwheel, Z-Axis (knee or quill) handwheel, Quill fine feed handle, Quill lock lever, Table locks (X & Y).

Spindle: Speed adjustment, Direction control, Brake (if equipped). Axis Locks: Manual locks to secure table and saddle during heavy cuts. Digital Readout (if equipped): Power, Zero/Origin buttons, X/Y/Z displays. Coolant: On/Off valve or pump switch.

Basic Operation

1. Power Up: Ensure area is clear. Turn main power switch ON. Do not start spindle yet.
2. Workpiece Setup: Secure workpiece in vise or directly to table using clamps and T-bolts. Ensure it is firmly held and does not interfere with tool or machine movement.
3. Tool Setup: Insert appropriate end mill or drill chuck into spindle (R8 collet). Tighten drawbar securely using correct wrench.
4. Zeroing Axes: Move tool near workpiece using handwheels. Use edge finder or paper method to establish X/Y zero. Set quill depth stop for Z-axis reference.
5. Select Speed & Feed: Consult machining charts for material and tool. Set spindle RPM. Plan feed rate (manual or power feed).
6. Begin Cut: Start spindle. Engage quill feed or move table smoothly to begin cutting. Use cutting fluid for metals.
7. Shutdown: Retract tool, stop spindle. Clean chips from table and ways. Apply a light coat of oil to exposed metal surfaces.

Tip: Always make a final "dry run" (spindle off) of your tool path to check for collisions before starting the cut.

Workholding & Tooling

Securing the workpiece is critical for safety and accuracy.

1. Machine Vise: Mount on table, align with axis using dial indicator. Use parallels under workpiece to elevate it.
2. Clamps & Step Blocks: For large or irregular parts. Use T-slots in table.
3. Rotary Table: (Optional) For circular milling and indexing.
4. Tool Holders: R8 collets for end mills. R8 drill chuck for drilling. Use proper drawbar torque.
5. Tool Changes: Stop spindle completely. Support quill with one hand while loosening/tightening drawbar.

WARNING! An unsecured workpiece can become a deadly projectile. Double-check all clamps and vise pressure before starting the spindle.

Maintenance Schedule

Regular maintenance ensures accuracy and longevity.

Lubrication Points

Use recommended oils: Way Oil (ISO 68 or Vactra #2) for sliding surfaces; Spindle Oil (light machine oil) for quill.

1. Table Ways (X-axis): Apply way oil to front and rear ways before use.
2. Saddle Ways (Y-axis): Oil the cross-slide ways.
3. Knee Ways (Z-axis): Oil the vertical ways on column.
4. Leadscrews & Nuts: Light oil on exposed threads.
5. Quill: A few drops of spindle oil into the quill oiler.
6. Gearbox: Fill to sight glass with recommended gear oil (if applicable).

CAUTION! Never run the machine dry. Lack of lubrication is the primary cause of premature wear and failure.

Safety Guidelines

ESSENTIAL RULES: Always wear ANSI-approved safety glasses. No loose clothing, gloves, or jewelry. Tie back long hair. Use hearing protection during prolonged use.

• Never leave machine running unattended.
• Use a brush, not hands, to remove chips.
• Keep guards in place. Never remove spindle guard.
• Understand emergency stop location and function.
• Use sharp tools. Dull tools require excessive force and can break.
• Know the material you are cutting and its properties.

Warranty & Support

Grizzly Industrial warrants machinery against defects in material and workmanship for a specified period (typically 1 year) from date of purchase. This warranty covers parts; labor may not be included. Damage from misuse, neglect, improper installation, or normal wear is not covered. For technical support, parts diagrams, and service, contact Grizzly Industrial.

Support Contact: 1-800-523-4777 | www.grizzly.com | [email protected]

Troubleshooting

Note: For electrical or complex mechanical issues, contact Grizzly Technical Support. Do not attempt repairs beyond your skill level.