# Makino a71nx

Hardware · `a71nx` · verification: source checked

The Makino a71nx is a 4-axis horizontal machining centre that uses a 500 mm square pallet and a CAT50 (HSK-A100 optional) spindle. It has 800 mm X, 750 mm Y and 830 mm Z travels, a 10,000 rpm spindle rated at 37 kW, and rapids of 50 m/min on X and Y and 60 m/min on Z. A direct-drive NC rotary B-axis table indexes 90° in one second and carries workpieces up to 1000 kg.

## Specification

| Property | Value |
|---|---|
| Category | cnc mill |
| Axes | 4 |
| Travel X | 800 mm |
| Travel Y | 750 mm |
| Travel Z | 830 mm |
| Spindle max | 10000 rpm |
| Spindle power | 37 kW |
| Spindle taper | CAT50 (HSK-A100 opt) |
| Rapid traverse | 60 m/min |
| Tool capacity | 60 |
| Table length | 500 mm |
| Table width | 500 mm |
| Table load | 1000 kg |

## Connected

- Manufacturer: [Makino](https://machineschema.com/manufacturer/makino.md)

## Study notes

- B-axis is a 360° direct-drive NC rotary table (DD NCRT) with 90° indexing time of 1 second.
- Cutting feedrate is 50,000 mm/min.
- Maximum workpiece size is ø900 mm x 1,000 mm.
- ATC capacity is 60 tools, expandable to 136, 187 or 299.
- Tool-to-tool change time is 1.7 s and chip-to-chip time is 3.6 s, both for tools of 20 kg or less.
- Maximum tool diameter is 300 mm; maximum tool weight is 20 kg, or 30 kg with limitations.
- Spindle duty rated torque is 512 Nm.
- Inertia Active Control (IAC) monitors B-axis motor load, estimates fixture weight and adjusts acceleration and deceleration of the B and Z axes.
- A Vision type broken tool sensor in the ATC magazine checks drills, taps and other single-point tools.
- Tapping time is reduced by 20% compared with the previous model.
- Machine construction uses a robust casting design and large roller-type linear guides; the way covers are a single-piece design and the tool-change arm is dual-supported.

## Sources

1. [a71nx](https://www.makino.com/en-us/machine-technology/machines/horizontal-4-axis/a71nx) (accessed 2026-10-25)

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