Special machines
N20 CM | N30 CM
Your benefits at a glance:
- Process capable dry milling of bearing geometries, cheeking and topping of counterweights in addition to other concentric and eccentric features with one or two external cylindrical cutters
- Customized clamping solutions with integral or separate radial orientation of work pieces
- Up to two NC-positioned steadyrests
- Semi-automatic tool clamping, automatic transfer of pre-set tool data via ID-chip
The NILES-SIMMONS Crankshaft Milling Centres N20 CM and N30 CM are based on the modular building-block system of the N-series. Two symmetrically arranged tool spindles with electronically synchronized torque drives and two compact and powerful milling units ensure rough and finish milling operations on crankshaft main and pin bearing journals by means of these milling centers. Electronic gearbox and high precision interpolation of spindle systems as well as special compensation strategies enable process capable manufacture of high precision bearing geometries.
Technical data
| Crankshaft Milling CM | |||
| Specification | N20 CM | N30 CM | |
| Working area | |||
| Nominal length | mm | 1000 | 1500 / 2500 |
| Swing over cross slide guide | mm | 650 | 780 |
| Tool length, max. | mm | 500 | 800 / 1800 |
| Main spindle and counter | |||
| Work spindle nose acc.to DIN 550266 | size | A8 | A11 |
| Work spindle bore | mm | 80 | 102 |
| Spindle diameter in front bearing | mm | 150 | 170 |
| LH and RH tool drive unit | |||
| Rapid feed cross / longitudinal | m/min | 30 / 40 | 18 / 30 |
| LH and RH tool system | |||
| Tool acceptance | DIN 55026 | A11 | A11 |
| Tool diameter | mm | 700 | 700 |
| Drive power, max. (S1-100% ED) | kW | 2 x 29 | 2 x 29 / 2 x 63 |