1971 - LIEBHERR - L 301 - Gear hobbing machine

General Description

Conventional gear hobbing machine manufactured by Liebherr, model L 301. Designed for precision generation of external spur and helical gears using a rotating hob cutter. Suitable for industrial gear manufacturing, transmission production and general gear-cutting applications.

Technical Details

Manufacturer: Liebherr

Model: L 301

Machine type: Gear hobbing machine

Year: 1971

Serial number: 0430

Maximum gear cutting diameter: 300 mm

Maximum module: 6.0 (DP 4.25)

Hobbing length / milling slide travel: 225 mm

Table diameter: 315 mm

Table bore diameter: 80 mm

Maximum workpiece length: 680 mm

Minimum workpiece height above table: 165 mm

Standard workpiece arbor: Ø25 mm, MK4 taper

Maximum hob diameter: 140 mm

Maximum hob length: 152 mm

Minimum number of teeth: 4

Constant axial feed: 1.2 mm/WU

Adjustable axial feed, Stage I: 0.23–1.5 mm/WU

Adjustable axial feed, Stage II: 0.9–6.35 mm/WU

Adjustable radial feed: 1–12 mm/min

Milling slide rapid traverse: 960 mm/min

Power supply: 380 V, 3-phase, 50 Hz

Rated machine current: 31 A

Control voltage: 220 V

Auxiliary voltage: 24 V DC

Supply fuse: 60 A slow-blow

Electrical diagram No.: 1620.05.67.2.0

Included Equipment

Various tooling and change gears visible with the machine

Machine documentation dated 11 May 1971

Condition

Used industrial condition. Operational status, spindle condition, machine geometry, gear-cutting accuracy and completeness/condition of the supplied tooling have not been independently verified.

Dimensions

Length: 3,300 mm

Width: 1,900 mm

Height: 2,200 mm

Weight: Approx. 6,000 kg