APEC MT20-RT – 5-Axis Bridge-Type Machining Center for Aerospace Engine Casings

The APEC MT20-RT is a specialized 5-axis bridge-type machining center designed specifically for aerospace engine casing manufacturing. Unlike traditional bridge mills, the MT20-RT features a moving table design that shifts the workpiece in and out of the machining envelope, providing optimal accessibility and accuracy when working on large circular and complex engine components.

With its dual-block architecture, arch-shaped column and beam, and high-speed precision ball screw drives, the MT20-RT delivers the rigidity, stability, and precision demanded by leading aerospace OEMs. Competing with solutions from Mazak, Okuma, and Makino, APEC offers a purpose-built alternative for engine casing processing.

Benefits for Metal Cutting Manufacturers

For aerospace manufacturers, the MT20-RT offers a significant productivity and quality advantage. By combining a bridge-type structure with a moving table design, this machine allows precise 5-axis access to all features of large engine casings while maintaining rigidity and stability. Benefits include:

  • Unmatched rigidity and stability from its dual-block structural design and arch beam-column integration
  • High accuracy and repeatability ideal for tight-tolerance aerospace requirements
  • Ultra-fine surface finishes that reduce polishing and improve sealing surface quality
  • Faster cycle times with high-speed traverse and acceleration rates
  • Reliability in long production runs, reducing downtime and ensuring consistent output
  • Optimized solution for round aerospace engine casings, minimizing deformation risk and ensuring dimensional accuracy

Key Features

  • Bridge-type machining center with moving table – workpiece moves in/out of machining envelope for optimal accessibility
  • Dual-block structural design ensures rigidity and minimizes deflection
  • Arch-style integrated beam and column optimizes force flow and stability
  • XYZ axes driven by high-speed precision ball screws for high acceleration/deceleration with low noise and high repeatability
  • Rapid traverse speeds up to 20m/min with acceleration of 0.3G ~ 0.6G
  • One-piece casting column bridge provides maximum stability during cutting
  • Inverted dual V-shaped rib base design for optimized force flow and prevention of gravitational deformation
  • Chip evacuation and coolant systems for continuous high-volume aerospace machining
  • Full enclosure and operator safety features for clean and controlled processing environments

Ideal Cutting Applications

  • Aerospace engine casings – precise 5-axis machining of inner and outer geometries
  • Engine housings, covers, and bearing supports requiring high rigidity and accuracy
  • Thin-wall aerospace structures – reduced distortion during machining of round parts
  • Frames, bulkheads, and ribs needing accurate 5-axis contouring
  • High-strength aluminum alloys and heat-resistant materials for aerospace applications
  • Critical sealing and assembly surfaces requiring ultra-fine finishes and dimensional accuracy

Specifications

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X-Axis

-39.37″ ~ 70.87″

Y-Axis

-39.37″ ~ 39.37″

Z-Axis

33.46″

Distance from Spindle End to Table

-11.81″ ~ 21.65″ (Vertical)2.36″ ~ 35.83″ (Horizontal)

Table Size (LxW)

49.21″ x 49.21″

Max Turning

Ø74.80″

C-Axis Angle

±360° (Continuously)

C-Axis Speed

5 RPM

C-Axis Torque (S1/Max)

6277.19 / 21434.21 ft. lbs.

Rapid Traverse

X/Y=65.62’/min

Spindle Taper

HSK-100A

Spindle Speed

8-000 RPM

Spindle Power(S1/S6)

67.11 / 83.66 hp

Spindle Torque (S1/S6)

234.73 / 294.19 ft. lbs.

Tool Shank

40T pieces

Max. Tool Length

15.75″

Max Tool Diameter with Adjacent Tool

Ø4.92″

Max Tool Diameter without Adjacent Tool

Ø9.84″