Model
Manufacturer	Liebherr
Model	LC-255
Serial Number	0214/3
Year of manufacture	1985
Description
This machine is being offered in recontrolled and recertified condition. We can also offer it with a full rebuild (Call for details). All recontrolled and recertified machines are fully cleaned. All moving slides, spindles and parts handling systems are inspected for problems. Any gibs or adjustable backlash systems are adjusted to the best possible settings. All hydraulic, coolant, lubrication and pneumatic systems are checked for proper functionality and leaks. All filters are replaced. All worn hoses, broken cables, connectors, buttons, lamps and wires are replaced. All guarding is installed and checked. All machine cycles are tested. Parts are cut to verify the machine capability. Charts from the test cutting are documented for your viewing.
During the recontrol process this the entire electrical cabinet will be replaced. A new CNC of your choice will be installed, along with new servo motors, feedback devices, and motor and feedback cabling. A easy to use conversational program will be provided to allow for easy operator data entry and storage.
Mechanical Specifications
Pitch rating	4.23	DP	6	Mod
Maximum workpiece diameter	9.843	in	250	mm
Maximum axial travel	9.843	in	250	mm
Worktable diameter	9.843	in	250	mm
Table bore diameter	3.937	in	100	mm
Maximum radial center distance	8.071	in	205	mm
Minimum radial center distance	0.787	in	20	mm
Maximum axial height from table top	11.417	in	290	mm
Minimum axial height from table top	5.512	in	140	mm
Maximum hob diameter	5.709	in	145	mm
Maximum hob length	9.055	in	230	mm
Maximum hob shift travel	7.874	in	200	mm
Maximum swivel angle	-45	deg	+45	deg
Hob speed range (Infinitely Variable)	48	to	480	RPM
Hob Spindle Power	20	HP	15	kW
Rapid traverse radial	94.488	in/min	2400	mm/min
Rapid traverse axial	59.055	in/min	1500	mm/min
Rapid traverse tangential	39.370	in/min	1000	mm/min
Machine Weight	19958	lbs	9071	kg
Plant power	460	VAC	60	Hz
Features
Tailstock with pressure adjustment
Power clamping with pressure adjustment
Automatic carousel loader (removable if desired)
Controls
Siemens 840D (PC Front End)
Or
GE Fanuc 16i-MB
Base Software
Three passes (same or alternating directions)
Hobbing of four sequential gears in one cycle
Inch / Metric switchable
Incremental shifting by part count
Crowning with high point offset capability
Taper compensation
Axial or radial/axial cycles
Radial only cycle
Programmable dwell
Automatic or manual overtravel and approach calculations
Tool offsets for quick size changes
Workpiece counter
Multiple program storage and retrieval
Shifting with table compensation
Auxilliary function selection (tailstock/clamping seq.)
Automatic or manual hob swivel angle calculation
Optional Software
Taper root cycle
Double helical (herringbone gears)
Size correction by measurement over pins or span
Single indexing cycle
End relief cycle
Automatic stock division cycle
Custom crowning cycle
Dip cycles
Machine Includes
Side mount coolant tank
Chip Conveyor
One set of leveling wedges
One 1.25" hob arbor and nut
Almost a full set of change gears
Two copies of the operations manuals
Two copies of the maintenance documentation
30 Day warranty on machine, 1 Year on controls
MTB Quality Checks and Repairs
Hob head was checked for problems
Work table drive system checked for problems
Hydraulic system drained and cleaned
All filters changed
Machine was thoroughly cleaned
All cycles were tested and are fully functional
All worn hoses replaced
Sample parts have been cut
The aforementioned description and listing of specifications and accessory equipment is correct and accurate to the best of our knowledge. However, it should not be considered binding in any regard, as we reserve the right to change and/or alter same without prior notice. Consequently the buyer is responsible for confirming same, upon physical inspection and inventory of the machine(s) and all related accessory equipment.