Makino D300
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Tool Capacity
Overview
The Makino D300 is a compact 5-axis vertical machining center designed for high-precision die and mold finishing, medical components, and small aerospace parts. Part of Makino's D-series precision machining lineup, the D300 emphasizes accuracy and surface finish quality over raw material removal rate, positioning it as a dedicated finishing platform for shops that demand mirror-quality surfaces on complex 3D geometries.
Axis travel of 300 x 350 x 250 mm (11.8 x 13.8 x 9.8 in) on X/Y/Z targets small-to-medium precision components. The A-axis tilts through 150 degrees (+30 to -120) and the C-axis provides full 360-degree continuous rotation via direct-drive motors, enabling simultaneous 5-axis contouring for complex freeform surfaces. The direct-drive configuration eliminates backlash for smoother surface finishes on contoured geometry.
The spindle runs at 20,000 RPM with an HSK-A63 taper, delivering 18 kW (24.1 hp). This spindle specification provides excellent versatility for both semi-finishing and fine finishing operations with tool diameters from 1 mm to 25 mm. Positioning accuracy reaches 2 microns with repeatability of 1 micron on linear axes. The 300 x 200 mm (11.8 x 7.9 in) trunnion table handles workpieces up to 200 kg (441 lb).
A 30-tool automatic tool changer provides adequate capacity for finishing operations. The machine weighs approximately 6,000 kg (13,228 lb), with the mass-to-envelope ratio optimized for precision and vibration damping. The Makino Pro 6 control with advanced 5-axis functions manages complex toolpath execution. The D300 competes with the Roeders RXP 501, Yasda YBM 640V, and Hermle C 12 in the compact precision 5-axis milling segment.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 300 mm (11.8 in) |
| Y-Axis Travel | 350 mm (13.8 in) |
| Z-Axis Travel | 250 mm (9.8 in) |
| A Axis Range | +30° to -120° (150° total) |
| C Axis Range | 360° (continuous) |
| Max Spindle Speed | 20,000 RPM |
| Spindle Taper | HSK-A63 |
| Spindle Motor Power | 18 kW (24.1 hp) |
| Tool Capacity | 60 (124, 212 opt) |
| Table Size | 300 x 200 mm (11.8 x 7.9 in) |
| Table Load Capacity | 200 kg (441 lb) |
| Positioning Accuracy | 2.0 µm |
| Repeatability | 1.0 µm |
| Rapid Traverse Xyz | 50 m/min (1,969 ipm) |
| Machine Weight | ~6,000 kg (13,228 lb) |
| CNC Control | Makino Professional 6 (Pro 6) |
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| Metric | English |
| A Axis | +120/-120 |
| C Axis | 360 |
| Spindle Rpm | 15K (20K, 30K opt) |
| Rapid Traverse Rate | 2,362 in/min |
| Cutting Feedrate | 2,362 in/min |
| Maximum Workpiece | 17.7" diameter x 10.6" high (conditional) |
| Maximum Payload | Table: 265 lbs |
| Tool To Tool | 0.8 sec |
| Maximum Tool Diameter | 2.76" |
| Maximum Tool Weight | 17.6 lbs |
| Optional Atc Capacity | Yes |
| Makinooptionalatccapacity | Yes |
Specifications sourced from makino.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Direct-drive A and C rotary axes eliminate backlash for smoother surface finishes on complex contoured geometry
- 20,000 RPM HSK-A63 spindle provides excellent versatility from semi-finishing through ultra-fine finishing operations
- 50 m/min rapid traverse is class-leading for compact precision machines, reducing non-cutting time significantly
- 200 kg table load capacity is generous for a compact precision machine, accommodating substantial fixtures and workpieces
- 6,000 kg machine mass provides excellent vibration damping relative to the compact travel envelope
- 2 micron positioning accuracy delivers die/mold-grade dimensional precision
Limitations
- 300 x 350 x 250 mm travel restricts workpiece size to small components and mold inserts
- 18 kW spindle power limits aggressive roughing—best used downstream of a roughing machine
- No high-speed spindle option (30K+ RPM) for micro-tool finishing applications
- 30-tool magazine may require manual changes for complex parts with many tools
- Compact envelope means reduced versatility compared to larger 5-axis platforms
Best For
Frequently Asked Questions
01
A new Makino D300 typically runs between $250,000 and $380,000 depending on configuration. A base machine with the 20K RPM spindle and 30-tool magazine starts around $250,000. Adding precision probing, through-spindle coolant, enhanced thermal compensation, and automation readiness packages pushes the price toward $320,000-$380,000. Used D300 machines from 2018-2022 can be found for $150,000-$220,000 depending on hours and condition.
02
The D300 and DA300 target different applications despite similar names. The DA300 has larger travel (450 x 620 x 500 mm vs 300 x 350 x 250 mm), a 60-tool magazine, and is designed for production throughput with fast rapids and cycle times. The D300 is a precision finishing platform with tighter accuracy specs and a focus on surface finish quality. Choose the DA300 for production speed; choose the D300 for ultimate finishing precision on smaller parts.
03
The D300 routinely achieves surface finishes of Ra 0.1-0.2 µm on hardened mold steels with appropriate tooling and parameters. On non-ferrous materials like aluminum and copper alloys, finishes below Ra 0.05 µm are achievable. The direct-drive rotary axes contribute to superior surface finish by eliminating the micro-vibrations that worm-gear systems can introduce during simultaneous 5-axis contouring.
04
Yes, with appropriate dust management. The D300's 20,000 RPM spindle handles graphite effectively, and the compact enclosure helps contain graphite dust. Makino offers sealing packages for graphite applications. Many die/mold shops use the D300 for both graphite electrode finishing and hardened steel cavity finishing, maximizing the machine's utilization.
05
The D300 excels at finishing hardened tool steels (50-62 HRC), pre-hardened mold steels (30-40 HRC), stainless steels, titanium alloys, cobalt-chrome, copper alloys, aluminum, and graphite. The 20,000 RPM spindle with HSK-A63 taper provides the right balance of speed and rigidity for these materials. For ultra-hard materials above 62 HRC, CBN tooling at moderate speeds delivers excellent results.
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