# Makino A51 Used Price & Common Problems | CNC Ledger

> Makino A51: used $64,900 to $87,900. Documented problems: ATC door proximity switch and legacy control support. What to inspect before you buy.

**Verdict:** insufficient-data

Makino A51 (Horizontal machining center): real dealer prices.

**Observed used price:** $64,900–$87,900

**Documented failure risks:**
- ATC door proximity switch: On a Makino A51, a broken proximity-switch actuator on the tool-change door caused a tool to hang up mid-exchange (misdiagnosed at first as a low air-pressure fault), stopping the ATC cycle.
- Legacy control support: Owners running older Makino horizontals (A51-era machines from the 1990s still in service) report that manufacturer support thins out as the machine ages, raising the risk of longer downtime when parts or control-level help are needed.

## Sources
- [revelationmachinery.com dealer listing](https://revelationmachinery.com/product/makino-a51-2009/) (accessed 2026-09-07)
- [revelationmachinery.com dealer listing](https://revelationmachinery.com/product/makino-a51-hmc-2010-full-4th-axis-300-psi-coolant-thru-spindle-60-atc-pro-5-cnc-control/) (accessed 2026-09-07)
- [revelationmachinery.com dealer listing](https://revelationmachinery.com/product/makino-a-51-2009/) (accessed 2026-09-07)
- [practicalmachinist.com (owner/operator failure report)](https://www.practicalmachinist.com/forum/threads/makino-tool-change-interruption.297454/) (accessed 2026-09-08)
- [practicalmachinist.com (owner/operator failure report)](https://www.practicalmachinist.com/forum/threads/makino-a51-or-something-else.269077/) (accessed 2026-09-08)

_Last verified 2026-09-07. Source: CNC Ledger — https://cncledger.com/machines/makino-a51/ — every claim checked against a primary source before publication (see /methodology/)._