Makino A51NX

What the maker publishes about the current Makino A51NX

Makino's a51nx is a four-axis horizontal machining center in the company's nx series, working on 400 x 400 mm pallets. Axis strokes are 560 mm in X and 640 mm in both Y and Z. The fourth axis is a direct-drive B-axis fitted as standard. Roller-type linear guides carry the moving axes, which accelerate at 1G. Rapid traverse is 60,000 mm/min, with cutting feed up to 50,000 mm/min. The spindle comes from Makino's own spindle factory and runs to 14,000 rpm, with a 20K option. Taper is CAT40, and HSK-63 is the alternative. The standard magazine holds 60 tools, and 40, 134, 219 or 311 pockets are optional. A tool change takes 0.9 seconds tool to tool and 2.2 seconds chip to chip. Tools up to 430 mm long, 170 mm across and 12 kg fit the changer. The work envelope takes parts up to ∅ 630 mm x 900 mm and 400 kg. Control is the Pro6, which runs Process Tracer from the Makino iKnowledge software set.

Source: Makino, September 27, 2026.

What the Makino A51NX is used for

Makino's release for the a51nx and a61nx names automotive parts made in large numbers with many tools as work where the direct-drive B-axis table, which indexes faster than the older worm-gear rotary table, may cut the number of machines needed, and it lists an optional 300 Nm spindle for heavy metal removal in ferrous parts.

Source: Makino, October 27, 2026.

Makino A51NX specifications

Figures as currently published; an older unit may differ in control generation and options.

1. manufacturer specification page, fetched October 14, 2026.

What fits a Makino A51NX

Each of these follows from a published specification above, which is named beside it.

What to check on a Makino A51NX

• Control generation. The manufacturer specifies Pro6 for this model. Units we have tracked run 2011 to 2022; an early one may carry an older control or a retrofit.
• Spindle. The manufacturer gives a spindle speed of 14,000 rpm (20K opt.). Run the spindle to top speed and listen for bearing noise.
• Spindle taper. The manufacturer gives a spindle taper of CAT40 (HSK-63). Check it for fretting and that the drawbar holds a tool.
• Axes and way covers. The manufacturer gives X 560 mm, Y 640 mm and Z 640 mm of travel. Run each axis end to end and check the way covers.
• Rapids and ballscrews. The manufacturer gives a rapid traverse of 60,000 mm/min. Measure the backlash on each axis.
• Tool changer. The manufacturer gives the tool capacity as 60 Tools (40, 134, 219, 311 opt.). Cycle every pocket and watch for a hesitation.
• Tool-change time. The manufacturer gives a tool-to-tool time of 0.9 secs and a chip-to-chip time of 2.2 secs. Time a tool change against that.
• Pallet changer. The manufacturer gives a pallet size of 400 x 400 mm. Run a full pallet change, and count the pallets and fixtures that come with the machine.
• Work envelope. The manufacturer gives maximum workpiece ∅ 630 mm x 900 mm. Measure your largest part, with its fixture, against that.

Makino A51NX control and manuals

• Control Pro6

Makino's myMakino customer portal shows a logged-in owner the manuals and specifications for each machine, with its service history and maintenance information.

Source: Makino, October 24, 2026.

Makino A51NX listing history

Where it was listed

Filed under CNC Horizontal Machining Centers (HMC) (19) and CNC Vertical Machining Centers (VMC) (12).

Model years seen

2022 ×3, 2021 ×2, 2020 ×3, 2019 ×2, 2017, 2016 ×3, 2015 ×2, 2014 ×4, 2013 ×2, 2012 ×5, 2011 ×5.

What Makino A51NX listings agree on

What affects the value of a used Makino A51NX

• Options. The units we tracked split on spindle power (22 kW on 7 machines, 50 hp on 4 machines, 25 hp on 2 machines), spindle taper (CAT 40 on 12 machines, 40 (HSK63) on 2 machines) and tool capacity (60 on 17 machines, 218 on 2 machines).
• Control. The manufacturer specifies Pro6.
• Build year. The units we tracked were built from 2011 to 2022, across 11 model years.
• Against the published figures. The manufacturer gives max spindle speed 14,000 rpm (20K opt.), tool capacity 60 Tools (40, 134, 219, 311 opt.), X-axis travel 560 mm and Y-axis travel 640 mm.

Looking for a Makino A51NX for sale?

We have tracked 34 Makino A51NX listings on 8 marketplaces (surplusrecord.com, usedcnc.com, equipt.com, machinetools.com, cncmachines.com, revelationmachinery.com, exapro.com and theequipmenthub.com), model years 2011 to 2022. We buy Makino A51NX machines and do not sell them.

2022 · 2022 · 2021 · 2020 · 2019 · 2017 · 2016 · 2016 · 2016 · 2015 · 2015 · 2014 · 2014 · 2014 · 2013 · 2012 · 2012 · 2012 · 2012 · 2012 · 2011 · 2011 · 2011 · 2011 · 2011 · year not given · year not given

Every Makino A51NX we have tracked

3 more Makino A51NX machines

The Makino A51NX among machining centers and mills

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