Swing over Z Cover

Cutting Diameter with standard tools

Cutting Length

Spindle Nose

Spindle bore diameter

Bar Capacity

Speed Range

Spindle Torque
(30 Minute Rating)

Spindle Drive
(AC-30 Minute Rating)

Hydraulic 3-Jaw Chuck Diameter

X-axis

Z-axis

X-axis Rapid Traverse

Z-axis Rapid Traverse

Maximum X-axis Thrust

Accuracy

Positioning

X-axis

Z-axis

Repeatability

X-axis

Z-axis

Tool Turret

Number of Tools

Type

Tool Selection

Index Time Next Station Incl. Unclamp and Clamp

Index Time 180’ Includes Unclamp and Clamp

Indexing Accuracy

Indexing Repeatability

Tool Capacity

Square

Boring Bar

Tailstock

Programmable Tailstock Body Travel

Quill Travel

Quill Diameter

Quill Taper

Quill Thrust

Auxiliary Units

Coolant Tank Capacity

Pump Horsepower

Rated Flow, Standard Coolant

Automatic Lubrication System

Hydraulic System

Optional Chip Conveyor

Descriptions

Bed: The bed is a one piece “L” shaped casting. The casting is poured in our own foundry to DIN 1691 standards. Our foundry is ISO 9002 certified and has been since 1994. The bed casting is heavily ribbed and provides excellent vibration dampening. The Romi “L” shaped design creates a rigid base fully supporting the headstock. The slant bed design provides good chip fall into the roll out chip pan or roll out chip conveyor.

Guide ways: The Z-axis moves on the slant bed which has an oversize inverted vee way and a rectangular way. This design has been used on precision grinding machines for many years. Romi’s patented manufacturing process grinds all way surfaces in one set up for maximum machine accuracy. The Romi guide way and carriage system permits heavy cutting in both the clockwise and the counter clockwise direction. .063” Turcite on the underside of the carriage ensures minimum friction and long life. The bed ways and ball screws are isolated from chips and coolant by one stainless steel cover on each side of the carriage. Romi’s machine design is ideal for heavy stock removal using either clockwise or counter-clockwise turning.

Headstock: The Romi headstock design anchors the spindle on thermal pads on both sides of the headstock. The headstock support casting is relieved directly under the spindle. As the spindle warms during startup it grows down as well as up. The maximum center line displacement is less than .0003”. Additionally, the thermal pads isolate any heat from the rest of the machine structure. Spindle bearings are P4 (AFBMA-B7) double angular contact ball bearings and double row cylindrical roller bearings in front and P4 double roller bearings at the rear of the spindle.

Carriage and Turret: The carriage is a rugged 20 degree casting with a wide stance to eliminate any twisting due to cutting forces. The oversize vee guide way provides straight movement through the entire Z axis travel without gib adjustment. .063” thick turcite is scraped and fitted to the underside of the carriage to eliminate friction in the Z axis. Turret index is bidirectional, no rise, non-stop. The turret is driven by an electric servo motor and hydraulically clamped on a curvic type coupling. The turret disc is designed for mounting I.D. or O.D. tools in any station. The turret disc and body are designed to give way under the stress generated in an accident, preventing damage to the spindle, ball screws, etc.

Driven Tools: Powered by a 10 HP variable speed motor tools rotate at 3 to 3,000 RPM. Full horsepower is achieved at 1,500 RPM. Both axial and radial tool holders use ER- 40 collets.

 

Ball Screws: Ball screws are manufactured and ground by Romi where complete control over the accuracy and quality is assured. We are not dependent on commercially available products. The double ball nuts are large in width and diameter. The double nut design provides positive location by mating with both flanks of the screw at all times. This design also minimizes heat distortion. Thermal gauging or temperature reduction systems are not required. The Z axis ball screw is set nearer to rear way to put it at the center of the carriage. Both ball screws are anchored at both ends and directly mounted to the A.C. servos. No problematic clutches are used to weaken the connection. The X axis is pre-tensioned using P4 angular contact ball bearings.

Tailstock: The tailstock moves on vertically mounted, precision ground, vee and square ways. The body is positioned automatically over 21.38 or 45 inches and the quill is controlled by either program or push button. Quill travel is 5.1 inches. The quill is 4.72 inches in diameter with a 5 MT. A built in live center is standard.

Lubrication: Automatic lubrication is standard. The lubrication reservoir is located in a protected inset in the front of the machine’s sheet metal guarding. It is in plain sight and easy to refill, but It is protected from accidental damage. The reservoir has 1/2 gallon capacity.

Guarding: Romi uses 10 gauge, powder coated steel for all external guarding. In the back of the machining area there is a one piece stainless steel guard to guide chips and coolant into the chip conveyor. No accordion guards are used. A separate coolant pump provides a chip wash to carry chips down from the guards. The door is easy to open and close gliding on multiple rollers. The double overlapping seal ensures that coolant remains in the cutting area, not on your floor. A large safety window allows the operator to monitor machine operations.

G 50 M Turning Center Includes as standard:
ASA A2-8” spindle nose, with 4.1” (104 mm) diameter through hole
Continuously variable spindle speed, from 2 to 2,500 rpm
50 HP (37 kW) variable speed spindle motor
10 HP (7.5 kW) variable speed motor for driven tools
12.4” (315 mm) hydraulically operated chuck with 3.54” (90 mm) bar capacity, one set soft jaws

Both Turning Centers Include as Standard

12-position VDI-50 automatic turret, servomotor driven, hydraulically clamped
7 turning tool holders
4 boring bar holders 2”, with 7 reduction sleeves (1/2, 5/8, 3/4, 1”, 11/4”, 11/4”, 11/2”)
1 facing tool holder
Tailstock with programmable body and hydraulically driven quill with built in live center 5 MT
Automatic lubrication system with low level sensor and line filter
Bar feeder interface, plug in
Chip conveyor interface, plug in
Coolant system
Electrical system 230 V, 50/60 Hz, 50 KVA
Pushbutton control for hydraulic chuck and tailstock
Chuck clamp and unclamp confirmation proximity switches
Fully enclosed splash guard, with interlocked sliding door
Inside cover cleaning system with separate pump
GE-Fanuc control Series 21i-T with 10.4” color monitor
Hydraulic power unit
Roll out chip box and coolant reservoir
Set of leveling screws and nuts
Set of operating, maintenance, programming, installation, parts manuals and electrical schematics
Set of wrenches for machine operation
Sealed work light

ROMI G-SERIES GE-Fanuc 21i-T Standard Equipment

Automatic Tool Wear Compensation Canned Cycles for Drilling (G81-G86) Turning, Threading (G77, G 78, G 79) Chuck and Tailstock Barrier Constant Surface Speed (G96) Conversational Programming (Manual Guide) Direct Input Drawing Dimensions External Message Ladder Graphic Display Jaw Machining Maintenance, Alarms and Operating History Multiple Thread Cutting (G 33) (approx.64K)Reader/Punch Interface RS-232 Run Hour and Parts Count Display Stored Pitch Error Compensation Tool Geometry Offset/ Wear Offsets (32) Tool Load Monitoring System Work piece Coordinate Preset (G92,G92.1)

Background Edit Rigid Tapping Chamfering and Corner Rounding Conditional Jump M80 Continuous thread cutting (G 32) Custom Macro B Extended Part Program Editing G Code Family A, B, C Inch/Metric Conversion Manual Handle Feed Multiple Repetitive Cycle (G70-76) Part Program Storage 160M (SRAM Card Part Program Storage ) Spindle Positioning (M 19 & G 64) Tool Life Management Tool Nose Radius Compensation (G40-G42) Work piece Coordinate System (G52-G59)

Romi G 50 M 27.95” Center Distance, Programmable Tailstock	Price On Request
Romi G 50 M 51.12" Center Distance, Programmable Tailstock	Price On Request
FOB Erlanger, Kentucky Terms of Payment are 20% with order Balance due 30 days after shipment Terms are subject to credit approval by Romi Machine Tools, Ltd.	Click here to review: ROMI MACHINE TOOLS, LTD. TERMS AND CONDITIONS OF SALE AND LIMITED WARRANTY

Machine Accessories
Price reduction for omission of Tailstock
X33111-Air blast chuck cleaning system X40122-Automatic door attachment, air operated with safety contact protection - SB X40123-Automatic door attachment, air operated with safety contact protection - LB X38832-Chip conveyor, hinged belt, side exhaust - SB X38188-Chip conveyor, hinged belt, side exhaust - LB X38842-Chip conveyor, hinged belt, double, rear exhaust - SB X38847-Chip conveyor, hinged belt, double, rear exhaust - LB Other Style Chip Conveyors, Scraper, Magnetic and Rear Exhaust Price on Request. S16247-Extra set of Romi operating, maintenance, installation and parts manuals $ 120. OPC00581-Technical documentation and labels in Spanish OPC00580-Canada(UL/CSA certified main breaker, delayed fuses and bases) X36038-Foot Switch for Hydraulic Chuck X36039-Double Foot Switch for Hydraulic Chuck & Tailstock Quill OPE00893-217 PSI Coolant, 2.6 GPM, 4 HP Pump X38841-Linear scales for X-axis X36047-Mist exhaust system X39304-Parts catcher, G 50 SB or LB Capacity up to 3.94” X 7.87” length X36189-Status indicator light X32885-Tool Setter with semi-automatic operation software X36045-Wash gun X38590-Steady rest open with rollers 3/8” to 11.8” (10-300mm) capacity XXXXX -Hydraulic self centering steady rests, manual or automatic Z axis positioning XXXXX -Romi Interface for Programmable steady rests
Hydraulic chuck accessories
R86931	-Set of three hard jaws for 12.4” Chuck
R74243	-Set of three soft jaws for 12.4” Chuck
Collet chucks
42372	Royal Accu-Length CNC Collet Chuck S35 (A2-8) with 3.5” Bar Capacity including Master Collet and draw tube adapter in addition to 3-Jaw Chuck
740AC322-80	ATS true length Collet chuck S 40 (A2-8) with 4” Bar Capacity with draw tube adapter in addition to 3-Jaw Chuck
X38856	- Credit for non-supply of G 50 Standard 3-Jaw Chuck
Additional Turret Tooling (Set of 12 holders and 7 sleeves standard, see above)
S51744-VDI-50 Boring bar holder 2” S51745-Reduction sleeve 1/2” x 2“ S51746-Reduction sleeve 5/8” x 2“ S51747-Reduction sleeve 3/4” x 2“ S51748-Reduction sleeve 1” x 2“ S51749-Reduction sleeve 1 1/4” x 2“ S51750-Reduction sleeve 1 1/2” x 2“ S51751-VDI-50 Turning tool holder (left hand) 1 1/4” x 1 1/4” S51752-VDI-50 Turning tool holder (right hand) 1 1/4” x 1 1/4” S51753-VDI-50 Facing tool holder (front mounted) 1 1/4” x 1 1/4” S48103-VDI-50 Axial tool holder (Uses ER-40 Collets) S48115-VDI-50 Radial tool holder (Uses ER-40 Collets)
Bar Loaders
LNS Eco Load Pneumatic “Short bar loader” Pneumatic “Short bar loader” Capacity ¼” to 2 ½ “ Bar length 12” to 59” Magazine capacity 25” with Siemens PLC and 3 pushers 6,12 & 20 mm
Quick Change Adapter
LNS Quick Load S3 Servo “Short bar loader” Capacity ¼” to 4 ¾”, Bar length to 5" to 63” Magazine capacity 39” w/ GE-Fanuc PLC, servo drive with absolute encoder
6 mm pusher for ¼” to ½” bars
12 mm pusher for 9/16” to 1 ¼” bars
25 mm pusher for 1 5/16 to 2” bars
LNS options for both bar loaders include:
Custom Electrical package with plug – Required
Spindle Liner tubes – Round for 3.54” bar capacity Spindle Liner tubes – Hex or Square for 3.54” bar capacity Quick Change Adapter - for 3.54” bar capacity Field Installation of Bar Loader Distance from Spindle Nose to the rear of the actuator is 48”
Set-up of first part by Romi Application Engineering Drawings and tooling preferences must be submitted at least 4 weeks prior to delivery. Tooling to run the first part will be quoted at extra cost.