Makino a120nx

$1,800,000 - $2,800,000 Updated 2026-03-13

Key Specifications

X Travel

1,600 mm (63.0 in)

Y Travel

1,350 mm (53.1 in)

Z Travel

1,400 mm (55.1 in)

Max Spindle

8,000 RPM

Spindle Taper

CAT50 (HSK-A100 opt)

Tool Capacity

204

Overview

The Makino a120nx is the flagship of Makino's nx-series horizontal machining center line, a massive 1,250mm-class production machine designed for the largest prismatic components in heavy industry. This machine targets applications where nothing else fits — large mining equipment frames, power generation turbine housings, heavy press components, and massive industrial castings that require both precision and raw material removal capability.

Axis travel extends to 1,600 x 1,350 x 1,400 mm (63.0 x 53.1 x 55.1 in) on X/Y/Z, providing one of the largest work envelopes in Makino's catalog. The 1,250 x 1,250 mm (49.2 x 49.2 in) pallet supports workpieces up to 2,000 mm (78.7 in) diameter with a massive 5,000 kg (11,023 lb) load capacity. Dual pallets are standard for continuous production operation.

The standard spindle runs at 8,000 RPM with an HSK-A100 taper delivering 55 kW (73.7 hp) continuous power and 1,000 Nm of torque. This provides the cutting force for aggressive roughing with 160mm+ face mills and large boring bars in cast iron, carbon steel, and alloy steels. The HSK-A100 taper maintains rigidity at the high cutting forces this machine regularly encounters.

Makino's cross-roller guides carry through to this platform, providing the structural rigidity needed for maintaining accuracy across the large work envelope. The direct-drive B-axis handles heavy pallet loads without backlash degradation. At approximately 52,000 kg (114,640 lb), the a120nx provides extraordinary mass for vibration-free heavy cutting. Rapid traverse runs at 42 m/min (1,654 ipm) on all linear axes.

The Thermal Stabilizer package is critical at this machine size, maintaining dimensional accuracy despite the thermal challenges of sustained heavy cutting. The 100-tool standard ATC handles complex large-part jobs, with expansion options available. The machine runs on Makino's Professional 6 control and integrates with MMC2 automation systems. Competitors in this class include the Mazak HCN-12800, DMG Mori NHX 16000, and large Okuma HMCs.

Full Specifications

Parameter	Value
X-Axis Travel	1,600 mm (63.0 in)
Y-Axis Travel	1,350 mm (53.1 in)
Z-Axis Travel	1,400 mm (55.1 in)
Max Spindle Speed	8,000 RPM
Spindle Taper	CAT50 (HSK-A100 opt)
Spindle Motor Power	55 kW (73.7 hp) continuous
Spindle Torque	1,000 Nm (738 ft-lb)
Tool Capacity	204
Pallet Size	1,250 x 1,250 mm (49.2 x 49.2 in)
Number Of Pallets	2 standard
Max Workpiece Diameter	2,000 mm (78.7 in)
Pallet Load Capacity	5,000 kg (11,023 lb)
B Axis	Direct-drive, 360° continuous, 0.001° indexing
Rapid Traverse Rate	2,126 IPM
Positioning Accuracy	±0.004 mm (±0.00016 in)
Repeatability	±0.002 mm (±0.00008 in)
Machine Weight	~52,000 kg (114,640 lb)
CNC Control	Makino Professional 6 (Pro 6)
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Metric	English
Pallet	39.4" x 39.4"(Optional 49.2" x 39.4")
Spindle Rpm	8,000 (Optional 20,000)
Cutting Feedrate	2,126 IPM
Maximum Workpiece	ø82.7" x 70.9"
Maximum Payload	6,600 lbs (Optional 11,000 lbs)
Tool To Tool	2.2 sec (26.4 lbs) / 3.3 sec (77 lbs)
Maximum Tool Diameter	14.0"
Maximum Tool Weight	77 lbs

Specifications sourced from makino.com — verified 2026-03-28

Strengths & Limitations

Strengths

1,600 x 1,350 x 1,400 mm travel envelope handles the largest industrial components that exceed the reach of standard large HMCs
5,000 kg pallet load capacity is among the highest in the industry, supporting massive fixtures and heavy castings
1,000 Nm spindle torque through HSK-A100 drives the largest face mills and boring bars for maximum material removal in ferrous materials
52,000 kg machine mass provides unparalleled vibration damping for stable cutting on even the most aggressive interrupted cuts
Cross-roller guides maintain Makino-grade precision across the entire oversized work envelope
Direct-drive B-axis handles the heaviest pallets without backlash, maintaining indexing accuracy with 5,000 kg loads

Limitations

Entry price of $1.8M-$2.8M requires very high-value production to justify — this is a specialized machine for facilities with consistent large-part demand
52,000 kg weight requires extensive foundation engineering, heavy rigging, and essentially permanent installation
8,000 RPM maximum spindle speed is intended for ferrous materials only — not suitable for high-speed aluminum work
Machine footprint and service access requirements consume significant floor space in the manufacturing facility
Lead times for large HMCs of this class can extend to 12-18 months due to casting and assembly complexity

Best For

Mining and heavy equipment manufacturers machining large cast iron and steel frames, housings, and structural components Power generation companies producing large turbine casings, generator housings, and valve bodies Oil and gas equipment manufacturers machining large BOP components, wellhead housings, and valve bodies Press and stamping die manufacturers requiring precision machining of very large die sets Heavy industrial manufacturers producing large marine diesel engine components and industrial pump housings Facilities with sustained demand for precision machining of components exceeding 1,000mm in multiple dimensions

Frequently Asked Questions

01 What does a Makino a120nx cost?

New a120nx machines typically price between $1,800,000 and $2,800,000 depending on configuration. A base machine with standard spindle, 100-tool ATC, and 2-pallet APC starts around $1,800,000. Full automation integration with MMC2, expanded tool magazine, high-pressure coolant, and comprehensive probing can push past $2,500,000. These machines rarely appear on the used market due to their specialized nature and the facilities that operate them tend to run them for decades.

02 What are the foundation requirements for the a120nx?

At 52,000 kg, the a120nx requires a purpose-engineered reinforced concrete foundation, typically 400-600mm thick, isolated from the surrounding shop floor. The foundation must handle both the static load and dynamic forces from heavy cutting operations. Soil analysis and engineering calculations are required. Makino's installation engineering team provides detailed foundation specifications, and many facilities pour a dedicated isolated foundation slab during plant construction.

03 How does the a120nx compare to large boring mills?

The a120nx offers the precision and productivity of an HMC — dual pallets, automatic tool changing, and Makino's thermal stability — on parts that might otherwise require a floor-type boring mill. Boring mills offer larger envelopes and handle even bigger parts, but with manual fixturing, slower tool changes, and typically lower positioning accuracy. Choose the a120nx when your parts fit within its envelope and production volume justifies the investment.

04 What is the typical cycle time advantage of the a120nx?

Compared to floor-type boring mills handling the same large parts, the a120nx typically delivers 30-50% shorter cycle times through automatic pallet changes (loading during cutting), 100-tool ATC (no manual tool changes), and higher rapid traverse rates. The dual-pallet system alone can improve spindle utilization from 50-60% to 80-90%, effectively doubling productive output per machine.