ACRA LCM-50 Vertical Milling Machine – 9″ × 50″ Knee Mill (R8 Spindle)

ACRA LCM-50 Vertical Milling Machine – 9″ × 50″ Knee Mill (R8 Spindle)

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ACRA LCM-50 vertical milling machine with 9″ × 50″ table, 3 HP motor, R8 spindle, and variable speed for precision machining and fabrication.

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SKU: LCM50 Category: Brand:

Description

Product Overview

The ACRA LCM-50 is a full-size vertical milling machine designed for precision machining in professional shops and production environments. With a larger 9″ × 50″ table and extended X-axis travel, it provides increased capacity for machining longer parts while maintaining the rigidity and accuracy of a traditional knee mill.

Built in a Bridgeport-style configuration, the LCM-50 delivers reliable performance for milling, drilling, boring, and fabrication work.

Applications

  • Machine shops and toolrooms
  • Precision part machining
  • Fabrication and repair work
  • Production and prototype work

👉 Ideal for shops needing more table travel and capacity than a 9×42 mill

Key Features

  • 9″ × 50″ table for larger workpieces
  • Extended X-axis travel (~38″) for longer parts
  • 3 HP motor for strong cutting performance
  • R8 spindle (standard tooling compatibility)
  • Variable or step pulley speed system (60–4500 RPM range)
  • Precision-ground spindle with angular contact bearings
  • Hardened and chromed quill for durability
  • Meehanite castings for rigidity and vibration reduction
  • One-shot lubrication system for easy maintenance
  • Ram travel (12″) and knee travel (16″) for vertical adjustment

Why This Machine Matters

Smaller mills (RF-31):

  • Limited rigidity
  • Smaller work envelope

9×42 mills:

  • Standard size
  • Limited for longer parts

The LCM-50 solves this by:

  • Providing a larger work area for longer components
  • Maintaining full knee mill rigidity and accuracy
  • Handling heavier and more complex jobs

👉 This is the preferred size for shops doing larger parts

When to Use This Machine

  • Machining longer parts or fixtures
  • Production and toolroom work
  • Precision milling and drilling
  • Shops upgrading from a 9×42 or mill/drill

Specifications

  • Table Size: 9″ × 50″
  • X Travel: ~38″
  • Y Travel: 12″
  • Knee Travel: 16″
  • Spindle Taper: R8 or NST30
  • Speed Range: ~60–4500 RPM
  • Motor: 3 HP
  • Quill Travel: 5″
  • Voltage: 230/460V, 3-phase
  • Weight: ~2,500 lbs

📞 Need Help Choosing the Right Milling Machine?

Not sure if a 9×50 mill like the LCM-50 is right for your shop or if a smaller 9×42 machine would be enough?

👉 Call us or request a quote—we’ll help you choose the right machine based on your part size, tolerances, and workload.

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