Principal: ROMAI Robert Maier GmbH • Vaihingen/Enz, Germany (Estd. 1957)

ROMAI Precision Right Angle Heads & Driven Tooling

Over 65 years of German aggregate engineering excellence. ROMAI specializes in high-precision right angle heads (5 to 300+ Nm), driven live tools for CNC turning centers, multi-spindle drill heads, and customized machine components. Featuring acquisitions of the renowned Bore Master (2012) and KUMA (2014) engineering divisions.

Torque Range: 5 – 300+ Nm Spindle Bearings: Class P4 Matched • Grease-Packed for Life Gear Technology: Hardened Crown & Spiral Bevel Lathe Drives: DIN 5480 / DIN 5482 / DIN 1809

Technical Specifications

ROMAI Aggregate Tooling Program

Filter by aggregate category, torque transmission, output spindle, gear ratio, and machine mount.

Aggregate Category	Torque Rating	Max Output RPM	Spindle Output	Gear Ratio	Machine Interface
Standard 90° Angular Heads	5 – 300+ Nm	10,000 RPM	ER Collet / Weldon / Arbors	1:1	HSK-A63 / BT40 / SK40-50
Compact Line Angle Heads	15 – 80 Nm	15,000 RPM	ER 16 / ER 25	1:1 / 1:2	BT30 / BT40 / HSK-A63
Driven Live Tools for Lathes	Up to 100 Nm	8,000 – 12,000 RPM	ER 25 / ER 32 / Milling Arbors	1:1 / 1:2 / 2:1	DIN 5480 / 5482 / 1809 (BMT/VDI)
Multi-Spindle Drill Heads	Multi-Hole Simultaneous	6,000 RPM	ER 11 / ER 16 / ER 20	1:1	ASP / KR / KF / MBK-V Adjustable
Large-Scale Machine Heads	Up to 500+ Nm	4,000 RPM	Flanged Spindle / ISO 50	1:1 / 1:2 (Reduction)	SK50 / BT50 / HSK-A100 Ram
Special CNC Aggregates (HOMAG)	Custom Engineering	Up to 18,000 RPM	Saw Blade / Milling Spindle	Variable	HOMAG / Biesse / SCM Mount

ROMAI Standard Angular Heads

360° manual rotation with hardened crown gears and optional Hirth serration for rigid heavy-duty internal cavity milling.

Driven Live Tools for Lathes

Complete turn-mill capability with DIN 5480, DIN 5482, and DIN 1809 couplings for Mazak, DMG Mori, Haas, Doosan, and BFW lathes.

Multi-Spindle Drill Heads

Bore Master & KUMA engineering heritage: ASP, KR round, and MBK-V adjustable multi-spindle heads for fast multi-hole cycle times.

Special Versions & Components

Custom tailored aggregates for multi-axis gantry machines and HOMAG CNC machining centers in composite and metalworking lines.

ROMAI Machining Center Demonstration

Watch ROMAI high-performance aggregate heads operating on HOMAG 5-axis CNC machining centers, demonstrating dynamic contour milling and high-precision multi-directional cuts.