Klingelnberg C 50 Bevel Gear Cutting Center

Klingelnberg's C 50 Bevel Gear Cutting Center handles bevel gears up to Ø 500 mm in workpiece diameter with a maximum tooth width of 90 mm. The C 30 stops at Ø 280 mm and 58 mm, so this is the machine for the larger half of the range.

The method chosen decides the tooling and the module limit together. In continuous indexing the C 50 takes cutter heads of 88 – 181 mm with 5 – 19 blade groups and cuts normal modules of 1.5 – 9 mm. In single indexing the cutter heads are 6" – 16" and the range widens to 1.5 – 11 mm. A shop planning a coarse-pitch job near the top of the range should settle the method first, because modules above 9 mm are only reachable one way.

Moving up from the C 30 is not a straight scaling. Diameter and tooth width grow, but spindle speed drops from 1,500 rpm on the C 30 to 450 rpm here, for the cutter head spindle and the workpiece spindle alike. The cutter head seat is identical on the two sizes: Ø 58.227 mm, Gleason outer cone No. 14, 1:24. The workpiece side differs. The C 50 has an Oerlikon inner cone No. 80 of Ø 203.218 mm (1:16) and a Ø 190 mm spindle opening, where the C 30 has an inner cone No. 39 of Ø 99.258 mm and a Ø 93 mm opening. Arbors and clamping fixtures therefore stay with their own machine size.

Tooth counts of 6 to 180, spiral angles between 0° and 60° and ratios from 1:1 to 1:10 are the same as on the C 30, so the choice between the two comes down to part size and cutter head size. The C 50 weighs approx. 33,500 kg, draws 50 kVA without its filter system and measures approx. 4,860 x 3,300 x 3,350 mm before integrated workpiece loading is added.