With 124.02 x 64.96 in. footprint and 20 in. swing, Model M 20 offers rapid traverse rates of 394 ipm on X-axis and 295 ipm on Z-axis. Belt-driven, cartridge-style, gearless headstock has 15 hp AC GE Fanuc P-type spindle motor with variable speed drive, permitting full horsepower at spindle speeds as low as 275 rpm. Featuring 10.4 in. color LCD, GE Fanuc 21i-T control offers machining cycles for profiling, grooving, threading, drilling, boring, and rigid tapping.

ERLANGER, KY - Romi Machine Tools, Ltd, an industry leader in turning machine technology, has built a reputation providing customer-driven solutions to a broad array of precision turned-part challenges. The M Series of Combination lathes is yet another step in providing these solutions ever-more flexibly. The M Series is ideal for today's mixed-volume, short-run, JIT operations as well as dedicated, high-volume applications.

With a swing of 20", the M 20 combines high performance turning and large machining capacity within a compact 124.02" x 64.96" space-saving footprint. Rapid traverse rates of 394 imp (X axis) and 295 (Z axis) mean accelerated machine cycle times and reduced non-cut time, which increases overall throughput. Also increasing cycle time is an optional automatic electric turret offering a fast 0.48 second index, station-to-station. The turret holds eight tools with pockets for square tool holders and bolt-on I.D. tool blocks.

The M 20 has a rigid cast iron "H" bed design. All guideways are induction hardened and ground. They feature a Turcite-coated carriage and cross-slide that move smoothly on the solid bed and saddle guideways, thus ensuring superior rigidity, accuracy, cutting tool performance and long machine life. The M 20 offers three bed-length options: M 20 by 40, M 20 by 60 and M 20 by 80. Distance between centers is, respectively, 43.15", 62.84" and 82.52"

The spindle. A new belt-driven cartridge-style gearless headstock featuring a high-torque 15 hp AC GE Fanuc "P"-type spindle motor with a variable speed drive permits full horsepower at spindle speeds as low as 275 RPM. Three spindle options allow you to match the spindle speed and size to specific production needs. A2 spindles feature rigid mounting, larger through-hole capacities and higher RPM, while Dl Camlock spindles offer quick chuck changing between three- and four-jaw chucks. The A2-6" has a through hole of 2.56" and a speed range of 3 to 3,000 RPM, while the A2-8" and Dl-8 have a through hole of 3.15" and a speed range of 2 to 2,200 RPM.

To assure the rigidity required for heavy-duty cutting, the spindle is supported by angular contact ball bearings at the nose and a double row of cylindrical roller bearings at the rear. The spindle cartridge is lubricated for life, and the spindle design eliminates the need for oil recirculation or a refrigeration systems to maintain spindle temperature. The result is years of reliable performance with reduced operating and maintenance costs.

A rigid tailstock with dual clamping affords rigidity for supporting heavy parts or manual large diameter drilling. The tailstock has a large manually operated quill with cast-in tang stop and drill knock-out.

Fully automated lubrication, a complete coolant system and splash guards with overlapping doors are standard.

The control. The GE Fanuc 21i-T features the latest technological advancements in a uniquely small space. The 10.4" color LCD and full keyboard conveniently swivel for ease of operation. A shock absorber keeps the control in position when keys are pressed. GE Fanuc CNCs and associated spindle and servo drives have an exceptional reputation for reliability. For example, according to GE Fanuc, sub-system failures per month are nearly unheard of - 0.00495 on the CNC, 0.00099 on the servo drive and 0.00376 on the spindle drive.

Operator-friendly software. Romi Machine Guidance software, standard on all M Series machines, is ideal for operators with varying levels of experience, as it simplifies the transition from manual programming to G code programming. As the operator's skill level rises and/or part complexity increases, the operator can easily move through four levels of part programming generation. These are:

Manual Cutting. The operator uses the electronic handwheels, and the CNC's position registers to cut the part manually. This is the simplest mode, and the moves are limited to X and Z cuts.

Guidance Single Cutting. The operator uses the electronic handwheels, and the GNC's position registers to cut the part. The operator enters additional data and uses one handwheel to cut tapers and radii on the part. In this mode, axis moves and other commands can be recorded as a part program. The "taught" program can be "played back" to produce additional parts.

Guidance Cycle Cutting. The 21i-T GNC has built-in machining cycles for profiling (rough and finish), grooving, threading, drilling, boring, and rigid tapping. These cycles generate a part program based on information the operator enters, as prompted, to describe the part. The CNC automatically generates the part program, which then can be converted to a standard G code format.