Used Gear Hobbing Machines for Sale 107

Gear hobbing remains the dominant method for producing external spur, helical, and worm gears across automotive, industrial gearbox, and precision mechanical applications. The fundamental process — where the rotating hob and rotating workpiece generate tooth profiles through continuous relative motion — produces accurate gears at higher rates than gear shaping or gear milling alternatives.

CNC gear hobbing machines dominate new production. Machines from Gleason, Liebherr Gear Technology, Koepfer, Mikron, and others feature multi-axis CNC control that synchronises hob rotation, workpiece rotation, axial feed, and crowning/taper corrections in real time. Changeover between different gear sizes is measured in minutes rather than the hours that cam-controlled mechanical hobbers required. Integration with CAD/CAM gear design software allows new gear designs to be programmed and produced without specialised gear-cutting expertise at the shop floor.

Conventional mechanical gear hobbing machines remain productive in established production environments. Liebherr, Pfauter (now Gleason Pfauter), and Mikron machines from the 1970s, 80s, and 90s continue to cut gears profitably when the production volume and gear mix align with the machine's capability. For shops producing standard gear sizes in steady volumes, a well-maintained mechanical hobber delivers production at lower acquisition cost than a new CNC machine.

Maximum gear diameter is the primary machine specification. Small gear hobbers handle gears up to 100-150mm diameter for automotive and precision mechanical work. Mid-range machines handle diameters to 500mm for industrial gearbox production. Heavy gear hobbers process gears over 1000mm diameter for heavy industry, marine, and large machinery applications.

Maximum module (gear tooth size) is the second critical specification. Module 1-3 machines suit precision mechanical and smaller industrial gears. Module 6-10 machines cover standard industrial gearbox work. Larger modules for heavy industry gears require specialised heavy gear hobbers with the cutting force and rigidity for those large teeth.

Worm gear hobbing capability is available on many gear hobbing machines through appropriate setup and software support. However, dedicated worm gear hobbing machines (sometimes from the same manufacturers) offer better productivity for worm gear production.

When evaluating used gear hobbing machines on Exapro, verify spindle accuracy through gear measurement, check hob slide guide condition and feed mechanism smoothness, test CNC synchronisation accuracy if applicable, inspect workpiece holding fixtures and tailstock condition, and confirm that hob supply is available in the sizes and profiles your gear production requires. Machines from gearbox production environments typically come with detailed maintenance documentation.