M328

The M328 automatic toolchange is a high stiffness precision machining spindle with a maximum speed of 125,000rpm, fitted with an interchangeable high torque automatic collet system. Collet sizes from 3mm to 6mm diameter are available. With a powerful AC motor, front thrust bearing system and high stiffness radial bearings, it is ideal for the precision machining of non-ferrous materials and composites, and is designed for use in specialised, multi-spindle CNC machine tools.

Specifications of M328 spindle

Speed range 10,000rpm - 125,000rpm
Motor power (max)750 Watts (peak), 500 Watts (cont.)
Automatic tooling systemPnuematic, with interchangeable collets
Collet sizes1/8”, 3, 4 and 6mm shank dia.
Bearing air supply pressure5.6 kg/cm*2
Bearing air consumption65 nl/min
Coolant flowrate1.5 l/min (water) or 3 l/min (oil)
Heat dissipation to coolant (max)640 Watts
Axial failure load (push)250 N
Radial failure load at collet80 N (static)
Collet torque (max)3.4 Nm with 1/8” bore collet
Dynamic runout at tool7 microns
Motor type3 phase, 2 pole AC
Speed sensor (tacho) - optionalTTL signal
Weight (approx)4.7 Kg