Introducing Acra's 9" x 42" Variable Speed Vertical Milling Machine, a powerhouse of precision and versatility offered by Omni Machine Inc. This state-of-the-art milling machine is designed to elevate your machining capabilities, delivering unparalleled accuracy, efficiency, and performance. With its robust construction, advanced features, and user-friendly design, the Acra 9" x 42" Variable Speed Vertical Milling Machine is the ideal choice for workshops, manufacturing facilities, and industrial applications demanding the highest levels of precision and reliability.

Acra's 9" x 42" Variable Speed Vertical Milling Machine is a testament to engineering excellence and cutting-edge technology. At the heart of this machine is a superior spindle unit, available in R8 or NST30 configurations upon request. Made from a single piece of Ni-Cr alloy steel, the spindle is supported by two precision angular contact bearings and one ball bearing, ensuring exceptional rigidity and accuracy. The inner taper is hardened and precision ground for long-lasting performance and repeatability.

The milling head, gear, and quill are designed for optimal performance and durability. The hardened and ground spindle ensures quiet and smooth operation, free from noise and vibration. Dynamically balanced pulleys and precision bearings further contribute to the machine's outstanding performance. The powerful 3HP spindle motor provides ample power for demanding milling tasks, while the spindle's back gear runs in a grease-packed housing, minimizing fatigue, enhancing strength, and reducing noise. The chrome-coated and mirror-ground finished quill delivers precise and consistent results.

One of the standout features of the Acra 9" x 42" Variable Speed Vertical Milling Machine is its patented rigid head tilting system. The head knuckle design greatly enhances stability and rigidity when the vertical head is tilted at any angle, front or back, allowing for the execution of complex and intricate work. With six T-bolts securing the knuckle to the ram, as opposed to the typical three bolts found in other machines, this milling machine offers unparalleled stability and precision.

The machine also features a unique adjustable backlash nut system, with double nuts and a backlash adjusting design. The enlarged contact face ensures long-term accuracy and easy backlash adjustment, further enhancing the machine's precision and reliability.

Features:

• Superior spindle unit available in R8 or NST30 configurations upon request
• Spindle made from Ni-Cr alloy steel for exceptional strength and durability
• Spindle supported by precision angular contact and ball bearings for rigidity and accuracy
• Hardened and precision-ground inner taper for long-lasting performance
• Hardened and ground spindle for quiet, smooth, and vibration-free operation
• Dynamically balanced pulleys and precision bearings for optimal performance
• Powerful 3HP spindle motor for demanding milling tasks
• Spindle back gear runs in grease-packed housing for reduced fatigue, enhanced strength, and low noise
• Chrome-coated and mirror-ground finished quill for precise and consistent results
• Patented rigid head tilting system with six T-bolts for unparalleled stability and precision
• Adjustable backlash nut system with double nuts and enlarged contact face for long-term accuracy and easy adjustment

Specifications:

• Table Size: 9″ X 42″
• X Axis Travel: 30″
• Y Axis Travel: 12″
• Z Axis Travel: 5″
• T-Slots: 3 x 0.625″ x 2.5″
• Ram Travel: 12″
• Knee Travel: 16″
• Throat Distance: 6.75″ ~ 18.75″
• Spindle to Table Top: 0 ~ 18.5″
• Main Motor: 3 HP
• Spindle Nose: R-8
• Spindle RPM: 60 – 4,500 RPM
• Quill Feeds: 0.0016″/0.0031″/0.0063″
• Voltage: 230V or 460V AC ~ 3 PH

Equipped With:

• Quill Heat Treated, Hardened & Chromed for exceptional durability
• One-Shot Lubrication System for easy maintenance
• Emergency Stop Button for enhanced operator safety
• Dual Cooling Fans for optimal temperature control and performance