Boring and Facing Technologies and Expertise
KOMA PRECISION, North America’s largest distributor of NC rotary tables and indexers, will exhibit its entire line of D’Andrea Precision Tools boring and facing solutions at IMTS 2026, in the South Building, booth #338754. Koma is the exclusive distributor of D’Andrea Precision Tools products in the United States and Mexico. In addition to installation and training, Koma offers support and service by factory-trained technicians on all D’Andrea products, ensuring smooth integration and optimal performance. D’Andrea’s manual, semi-automatic and fully NC-controlled systems are compatible across all common machine tool interfaces and the core products seamlessly interface with one another, eliminating costly and time-consuming workarounds.
The system backbone. D’Andrea’s modular MHD system is the backbone of the D’Andrea product line. Built around a proprietary, patented connection, each boring head in the system provides the concentricity necessary for high-precision applications. The MHD’s arbors, extenders, reducers, and adapters are shared across its core sizes ranging from the TRM micro-fine boring heads with micrometric radial adjustment to the TRC centesimal fine boring heads for precision finishing, the digital TRE fine boring heads with electronic readout for accurate measurement, and the double-bit TS rough boring heads for aggressive material removal.
Beyond the MHD system, D’Andrea is recognized for its high-precision boring heads, most of which use the same adapters and arbors as those in the MHD system reducing standalone tooling costs across a wide range of machines. For example, the TA-SENSITIV manual heads for boring and facing operations provide reliable and repeatable facing and boring on conventional CNC machines while the AUTORADIAL automatic facing heads execute a complete facing cycle automatically, allowing standard machining centers to complete operations that would otherwise require a turning center or dedicated facing attachment.
An extra machining axis. The TA-CENTER heads add a fully programmable U-axis (radial slide) to any machining center and are compatible with automatic tool change changers. The slide movement is controlled by the machine’s own U-axis output eliminating the need for a separate controller or PLC. Because of this, a machine equipped with a TA-CENTER head can consolidate operations that would otherwise require a dedicated turning center.
Shops working in the aerospace, oil-and-gas, and automotive industries will appreciate that complex internal profiles can be precisely bored in one set-up - and that the head is stored in the tool magazine much like all other tools in their inventory.
For machines without an automatic tool changer, the TA-TRONIC heads feature a motor integrated into the head body itself. The motor then connects to the machine’s U-axis numerical control making the head fully programmable for all radial positioning moves.
When a standard boring bar simply cannot reach the large-diameter precision boring and facing process at hand, the U-TRONIC large-format NC heads fit the bill. Connected to a machine’s U-axis for precision radial slide control, the U-TRONIC line ranges from 360 to 1000 mm in diameter, and special versions are available to 1600 mm with an internal coolant passage to bore through even the toughest materials.
These heads can be mounted manually, automatically, or via palletized tool change systems.
Holding all of the tools. The ability to maintain one single boring head inventory with interchangeable, modular components is an advantage to shop’s that run lean and emphasize efficiency. D’Andrea’s PSC modular and single-body toolholders feature an ISO 26623-compliant polygonal-tapered spindle interface for exceptional rigidity under demanding cutting conditions, helping shops to meet the requirement for their boring, milling, drilling, and boring machines, lathes (tapping), and machining centers.
The PSC system is offered in modular and single-body options that connect directly to the MHD line via dedicated adapters, allowing shops to add PSC arbors to their existing MHD components and eliminating the need to maintain two separate boring head inventories.
D’Andrea’s BHT cross-bar system (250 mm to 1000 mm) and U-TRONIC heads (360 mm to 1600 mm) cover the full range of large-diameter boring and facing challenges that shops face in aerospace, energy, naval and heavy equipment manufacturing. A single BHT bar body with interchangeable cartridge kits covers roughing and finishing in one set-up.
Additionally, because they are compatible with the MHD system, the bars can be used across multiple machines without dedicated adapters, again, streamlining operations and cutting down on unnecessary inventory.
Further, the MONOFORCE high-precision ultra-tight toolholders offer high-gripping for demanding milling operations where conventional ER collet holders are insufficient. For aggressive roughing cycles or high-torque finishing on difficult materials, these toolholders are compatible with a variety of spindles across a mixed machine shop floor.
Rounding out the D’Andrea toolholder line are the MONOd single-body integral collet chuck line and the THT turning modular toolholders for stationary tool turning operations on large machining centers and horizontal boring mills.
The addition of the D’Andrea lines complements Koma’s high-precision machine tool accessory offerings, including its rotary tables, angle heads, robotic part loaders, and other automation-ready technologies designed to improve manufacturing efficiency, accuracy, and process consolidation.
“Our customers are looking for ways to reduce set-ups, increase spindle uptime, and maximize the capabilities of their existing machine tools. The addition of D’Andrea Tooling strengthens our ability to support those goals with proven high-performance solutions backed by the application expertise and service Koma Precision is known for,” according to Koma Precision president Dave Meo.
In addition to these boring and facing technologies,, Koma Precision technical product manager Jesse Meade will present “Do More with the Mill You Have: U-Axis Turning on CNC Mills” - Thursday, September 17 from 3:14-4:10 pm CST, sharing more insights from the company’s expertise at maximizing production capacity of the machines on the shop floor.
Learn more at komaprecision.com.