Introducing Acra's new 9" x 50" Step Pulley Vertical Milling Machine, a state-of-the-art machine that combines superior accuracy, durability, and versatility. Manufactured in Taiwan, this milling machine is designed to tackle the most demanding machining applications with ease. With its robust construction, innovative features, and user-friendly design, the Acra 9" x 50" Step Pulley Vertical Milling Machine is the perfect choice for manufacturers seeking to optimize their production processes and achieve exceptional results.

The Acra 9" x 50" Step Pulley Vertical Milling Machine is a testament to the company's commitment to quality and innovation. The spindle unit features a standard R8 spindle, with NST30 or NST40 options available. 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 unparalleled rigidity. The inner taper is hardened and precision ground for long-lasting accuracy.

The milling head gear and quill are designed for quiet, smooth operation, free of noise and vibration. The spindle is hardened and ground, and the machine uses dynamically balanced pulleys and precision bearings. Powered by a 3HP spindle motor, the back gears are encased in a grease-packed housing, ensuring less fatigue, increased strength, and low noise. The quill is chrome-coated and mirror-ground for a flawless finish.

One of the standout features of this milling machine is the rigid head tilting system. Acra's patented head knuckle design greatly enhances stability and rigidity when the vertical head is tilted at any angle, front or back, to perform complex work. With six T-bolts locking the knuckle to the ram, as opposed to the typical three bolts, this machine offers unmatched performance.

The adjustable backlash nut is another unique feature, boasting a double-nut design and enlarged contact face for long-term accuracy and easy backlash adjustment.

Features:

• R8 standard spindle with NST30 or NST40 options available
• Spindle made from a single piece of Ni-Cr alloy steel for unmatched rigidity
• Hardened and precision-ground inner taper for long-lasting accuracy
• Dynamically balanced pulleys and precision bearings for quiet, smooth operation
• 3HP spindle motor for powerful performance
• Grease-packed back gear housing for reduced fatigue, increased strength, and low noise
• Chrome-coated and mirror-ground quill for a flawless finish
• Patented rigid head tilting system with six T-bolts for unparalleled stability and rigidity
• Adjustable backlash nut with double-nut design and enlarged contact face for long-term accuracy and easy adjustment

Specifications:

• Table Size: 9" x 50"
• X Axis Travel: 38"
• 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 Tabletop: 0 ~ 18.5"
• Main Motor: 3 HP
• Spindle Nose: R-8 or No. 30 NST
• Spindle RPM: 80-5,520 RPM
• Quill Feeds: 0.0016"/0.0031"/0.0063"
• Voltage: 230V AC ~ 3 PH

Equipped With:

• Heat-treated, hardened, and chromed quill
• One-shot lubrication system
• Emergency stop