4-axis CNC machining center a91nx

horizontalCAT50HSK-A 100

Overview
Oversize workpieces with large features, intensive roughing followed by precision finishing are typical requirements where the Makino a91nx is used. The a91nx is part of Makino’s nx series, offering capacity for large components with controlled surface quality and production throughput.

Typical applications

• Automotive and heavy‑duty truck components
• Industrial components
• Agricultural equipment
• Construction machinery
• Aero‑structural parts

Pallet and travels
Machine equipped with an 800 x 800 mm pallet designed for high reliability and productivity. Axis travels support large workpieces and heavy cutting loads.

Broken‑tool sensor: Vision B.T.S.
A vision‑type broken‑tool sensor is standard in the ATC magazine and automatically verifies the condition of drills, taps and other single‑point tools to reduce downtime and tool‑related scrap.

Advanced chip management
Makino’s enclosure design (near‑vertical walls and a three‑way chip channel) guides chips out of the machining chamber, minimizing chip build‑up and reducing dependence on coolant for chip evacuation.

Ergonomics and handling
Horizontal axis configuration and wide‑opening doors facilitate loading/unloading by crane. Steps and access points enable safe setup and inspection of tools and parts, and allow entry to the pallet changer for fixturing tasks.

Technical specifications

• Model: a91nx (nx series)
• Pallet: 800 x 800 mm
• Axes travels (X × Y × Z): 1,400 mm × 1,200 mm × 1,350 mm
• Spindle speed: 10,000 rpm (options: 8,000 / 15,000)
• Spindle taper: BT50 (option HSK‑A100)
• Rapid traverse: 60,000 mm/min
• Maximum feed speed: 50,000 mm/min
• Maximum workpiece: Ø 1,450 mm × 1,450 mm
• Maximum payload: 2,000 kg
• ATC capacity: 60 tools
• Max tool diameter: 155 mm (with adjacent tools) / 356 mm (without adjacent tools)
• Max tool weight: 30 kg (moment 45 N·m)
• Integrated vision broken‑tool sensor (Vision B.T.S.) in ATC magazine
• Chip management: near‑vertical walls and three‑way channel
• Ergonomics: wide doors, easy access to machining chamber, crane‑compatible handling

Notes
Standard specifications may vary by country and optional configurations are available for spindle, taper and tooling arrangements.