Gear technology and automation systems
LC 300 - 500

Fully equipped. For every job.

Liebherr gear hobbing machines are optimally customized to the requirements of universal usability. Our high-performance gear hobbing machines are productive and machine in the highest quality.

    Maximum flexibility

    • Larger work area
    • NC counter column for long shafts
    • Extended application possibilities of the cutter head
    • FlexChamfer: the most flexible chamfering solution on the market

    Maximized productivity

    • Fast axis movements thanks to optimized drive design
    • Powerful hob head for use with the latest tools and technologies
    • Shortest set-up times thanks to Liebherr's clamping fixture quick change

    Improved ergonomics

    • Fold-out steps for easy access
    • Optimum accessibility for maintenance work
    • Ergonomic machine operation thanks to LHStation and LHMobile

    Machine concept

    Liebherr gear hobbing machines are optimally customized to the requirements of universal usability. Our high-performance gear hobbing machines are productive and machine in the highest quality.

    • Gear hobbing head for larger and longer tools delivers greater productivity and flexibility
    • Chamfering of workpieces of up to 500mm workpiece diameter during the machining process and a module of 7mm with ChamferCut and/or the new FlexChamfer technology
    • Maximum flexibility thanks to larger work area
    • Counter column with NC technology for maximum ease of setup
    • Internal ringloader automation concept for workpieces up to 100kg
    • Operating concept with LHStation & LHMobile and LHGearTec
    • Improved chip removal thanks to optimized and redesigned machine bed
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    Powerful and uncompromising

    The powerful HH 240 hob head enables workpieces up to a module of 12 mm to be machined. With different gear rations, up to 3000 RPM are possible. Due to the large travel range of the counter bearing, very long or, if necessary, relatively short tools can be used. As standard, even hobs with a maximum diameter of 240 mm can now be accommodated.

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    Machine table

    For gear manufacturing, a workpiece drive with absolutely zero backlash is required. A table drive with preloaded zero-backlash spur gears and high torque is available for a broad range of applications. For high performance cutting (HPC), a highly-dynamic direct drive is available that fulfills all speed and precision requirements.

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    Dry machining in perfection

    Special attention was paid to perfected dry machining during the development of the new machine generation. Thanks to the design-optimized machine bed, chips can be removed even better. In addition, essential components such as the machine table, the machine bed, the machine column and the flat guides have been covered with stainless steel covers so hot chips have no influence on the temperature behavior. This guarantees constant temperature behavior and has a significant effect on gear quality and process stability.

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    NC counter column and ringloader automation

    The CNC-controlled counter column reduces setup time and ensures quick and easy settings via the HMI. Counter column travel of 750 mm for extremely long shafts and high clamping force of up to 13 kN. As standard, the machine is equipped with collision monitoring for downward movement.

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    Maximized operator friendliness

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    The new optimized control panel, LHStation & LHMobile

    With the control panel, Liebherr is intelligently dividing the programming and operation of the machine between two system parts: The large, fixed monitor unit LHStation for data input and process monitoring and the standardized, mobile handheld terminal LHMobile with context-sensitive user guidance during set-up. Both units have a multi-touch surface as well as tactile elements for optimum operating speed and operating safety.

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    Unrestricted accessibility for setup to both machining processes is also part of the numerous further developments. In addition, there are ergonomic fold-out steps as standard, which further improve accessibility.

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    Easy to maintain

    Optimum machine accessibility during maintenance work is a prerequisite for ensuring productivity. For this purpose, all necessary maintenance access points are equipped with doors. Moreover, to enable quick and easy additional monitoring of specific statuses, window panes are inserted into the maintenance doors. This means the machine operator or maintenance personnel can read the signals from outside in very little time. An enclosure for the hydraulics has also been integrated into the new machine design. This ensures sustainable reductions to hydraulic power unit noise.

    Gear cutting and chamfering parallel to machining

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    LC 300 / 500 DC with integrated ChamferCut device

    With the LC 300/500 DC, the ChamferCut device is integrated on the operator side. This device has been enhanced in terms of user-friendliness. As such, the machine operator has unobstructed accessibility to both machining positions. Chip removal has also been significantly improved. Using the proven Liebherr ringloader concept, the workpiece can be transferred quickly and efficiently between the gear hobbing and chamfering machining positions. Chamfering by ChamferCut or FlexChamfer therefore takes place parallel to gear hobbing. The special feature of the chamfering unit is that it is controlled using 6 CNC axes as standard. Set-up or corrections and adjustments for varying flank corrections can be executed quickly and easily using the user-friendly software.

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    ChamferCut & FlexChamfer

    The chamfering technology used can be either the familiar ChamferCut and/or the newly developed FlexChamfer process. A particularly notable feature is that workpieces with a diameter of up to 500 mm can now also be chamfered during the machining process. In addition, both processes can be used. This means that the finger milling unit can be mounted quickly and easily. This allows the customer to chamfer large workpiece lot sizes with the economical and fast ChamferCut process. However, if the workpiece lot sizes are very small, the FlexChamfer process can be used and the workpieces can be chamfered very quickly and flexibly. This is unique to this gear hobbing machine.

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    Technical data

    VariantsLC 300LC 300 DCLC 500LC 500 DC

    Automation & Features