Brother Speedio M300X3

$150,000 - $200,000 (new); $70,000 - $120,000 (used) Updated 2026-03-16

Key Specifications

Spindle Taper

BT30

x axis travel

300 mm (11.8 in)

y axis travel

440 mm (17.3 in)

z axis travel

305 mm (12.0 in)

milling spindle speed

16,000 rpm

milling spindle motor

7.5 kW (10 hp)

Overview

The Brother Speedio M300X3 is the larger multi-tasking mill-turn model in Brother's third-generation X3 Speedio lineup. It combines a 300 mm turning diameter with full milling capability in a compact platform, offering an updated control and refined dynamics over the prior XD1 generation.

X/Y/Z travels are 300 x 440 x 305 mm. The milling spindle runs at 16,000 rpm with 7.5 kW on BT30 taper. A C-axis turning spindle handles parts up to 300 mm in diameter. The 21-tool turret delivers fast tool changes to support efficient mill-turn cycles.

Rapids are 50 m/min on X/Y and 56 m/min on Z. The Brother CNC-C00 control handles simultaneous mill-turn operations including C-axis contouring and live tooling. Machine weight is approximately 3,300 kg.

The X3 generation introduced further servo refinements and expanded control functionality for more complex mill-turn programming relative to XD1 machines. This makes the M300X3 well-suited for parts that previously required two separate machines.

The M300X3 targets shops producing medium-size rotational and prismatic parts where combining turning and milling operations saves cycle time and reduces part handling.

New machines price $150,000-$200,000. Used units trade $70,000-$120,000.

Full Specifications

Parameter	Value
X Axis Travel	300 mm (11.8 in)
Y Axis Travel	440 mm (17.3 in)
Z Axis Travel	305 mm (12.0 in)
Milling Spindle Speed	16,000 rpm
Milling Spindle Motor	7.5 kW (10 hp)
Spindle Taper	BT30
Max Turning Diameter	300 mm (11.8 in)
Turning Spindle	C-axis, live tooling capable
Tool Magazine	21-position turret
Chip To Chip Time	0.9 seconds
Rapid Traverse Xy	50 m/min (1,969 ipm)
Rapid Traverse Z	56 m/min (2,205 ipm)
CNC Control	Brother CNC-C00
Machine Weight	3,300 kg (7,275 lb)
Power Supply	200/220V, 3-phase

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

Strengths & Limitations

Strengths

X3 generation delivers refined servo dynamics over prior XD1 mill-turns
300 mm turning diameter handles most medium-size rotational parts
Combined mill-turn eliminates part transfer and reduces setup time
C-axis contouring for complex mill-turn features in one program
CNC-C00 supports simultaneous 5-axis mill-turn operations
Competitive price versus full multitasking machines from Mazak or DMG Mori

Limitations

300 mm turning diameter is modest compared to dedicated CNC lathes
BT30 milling spindle limits depth of cut in hard materials
Turning capability is secondary to milling focus of the platform
21-tool turret may limit complex programs needing many tools
Not a replacement for a full-size multitasking machine on large parts

Best For

Precision rotational parts needing cross-drilled holes and milled flats Medical components combining turned profiles with milled features Automotive shafts, hubs, and fittings with combined operations Shops consolidating a lathe and VMC into one machine footprint Valve bodies and fluid components requiring turned bores and milled ports Short-run prototype work where setup flexibility outweighs throughput

Frequently Asked Questions

01 Cost?

New $150,000-$200,000. Used $70,000-$120,000.

02 M300X3 vs M300Xd1?

The X3 is the newer generation with further servo refinements and updated CNC-C00 software. Performance is similar; X3 carries a slight price premium new.

03 Max turning diameter?

300 mm (11.8 in). For larger diameters, a dedicated multitasking machine is recommended.

04 Can it do Y-axis turning?

Yes, CNC-C00 supports Y-axis offset turning cycles for off-center milling during turning operations.

05 What CAM software?

Mastercam, Fusion 360, NX, and Hypermill all support CNC-C00 mill-turn post processors.