Liebherr Model LC-122 6-axis CNC Gear hobbing machine, 5″ max diameter ,8 DP, 3.5″ Diam hob, 2000 rpm, Liebherr LH-90 CNC controls, high speed , full enclosure, magnetic chip conveyor new 1997

Category: GEAR HOBBERS, N/C & CNC Reference Number: 4130 Description:


One  (1) – Model No. LC-122 LIEBHERR “CNC” high speed gear hobbing machine, suitable for the 
                 super-high speed cutting of both spur and helical gears, pinions, splines, sprockets, and 
                 other workpieces of similar profile, up to 4.92″ (125mm) diameter, 

    Serial No. 0849 (Delivered in 1996)

Machine corresponds to the attached copy of factory literature, featuring the following:

EQUIPMENT / FEATURES:

Liebherr Series 90 cnc-controller in 6-axis execution
  w/air-conditioned control cabinet
electronic hand-wheel for x, z, v, and c-axes
instant retraction of main hobbing column
  in case of power failure
base machine bead with statically and dynamically rigid
  construction, w/unique thermal stablility for dry 
linear axes utilizing high precision guides w/pre-loaded
  dampened roller bearings, virtually maintenance free
table drive w/backlash-free compound helical gear train
power forced lubrication to all working elements
main machine column and tailstock column of welded
        steel fabrication for greater accuracy and rigidity
high speed hob-head w/8 kW drive AC drive motor,
        for hob speeds of 300 to 2000 rpm, suitable for use
  with HSS and carbide hobs
power operated tailstock w/adjustable clamping pressure
arrangement for heavy-duty “dry-cutting” with chip-guiding
  ducts inside work area, w/o coolant ducting, however, w/bedway 
  covering & “air-flushing” of fixtures instead of oil flushing
deburring attachment w/pnuematic operated disc
self contained chip disposal via  magnetic chip conveyor 
Torit mist collector
One (1) 1.25” dia. hob arbor, w/cross-slot rings and hydraulic chucking element, 
        including pressure indicator (TBD)
full complement of electrics (motors/controls)
  * machine presently arranged for: (480 volt, 3-Phase, 60Hz)
* control voltage 24 volt DC
Good documentation for the machine and controller, in English,
wiring and hydraulic diagrams, schematics, etc.

PRINCIPAL SPECIFICATIONS:

Maximum workpiece diameter ………………………………………… 4.92″ (125mm)
Maximum module for steel ……………………………………………… 8 DP (3 module)
Maximum axial travel ……………………………………………………… 9.84″ (250mm)
Table diameter ………………………………………………………………. 5.70” (145mm)
Table speed ………………………………………………………………….. 150 rpm
Minimum center distance between hob and table ………………. .393” (10 mm)
Maximum center distance between hob and table ……………… 6.29″ (160mm) 
Cutter spindle drive ……………………………………………… 10 HP (7.5 kW)
Hob head swivel …………………………………………………. ± 45°
Hob arbor taper in main bearing ………………………………………. HSK50A
Maximum shift/tangential travel ………………………………… 7.08” (108mm)
Maximum hob diameter …………………………………………. 3.54” (90mm)
Maximum hob length ……………………………………………. 7.87” (200mm)
Hob speed ……………………………………………………….. 300 to 2000 rpm
Approximate weight  ………………………………………………………. 19,845 lbs. (9,000 kG)

This liebherr machine is presently on plant location in excellent running condition. the machine can be inspected cutting gears and charts are available for review prior to inspection for the serious buyer. Customer has run the machine and cut many parts , however the machine runs very well and still maintains cutting excellent quality gears.

Contact Rich Piselli to set up an under power inspection rich@PiselliEnt.com or call 704 609-0766

For any questions contact Rich Piselli E-mail: rich@pisellient.com Phone: 704.609.0766