For years we have been selling TeknoMotor high speed milling motors with a manual tool changing system, where the milling tool is placed directly into the ER collet in the spindel nose. This is a lowcost solution, and can work fine if you don't have to do many toolchanges. Later we launched the ATC system, Automatic Tool Changer. The Automatic Toolchanger is a great system for industrial clients who use the machines for many hours a day, and really need the automatic tool change system. For many other clients it is too expensive. The motor itself is not such a high price, but you need many extra components like Pneumatics, and a Safety System, also the CNC controllers need to be programmed such that it can pick up and release tools in correct position. Due to all this extra cost and complexity, we see a market for a different kind of motor, which allows a quick tool change, but does not have to be automatic. Together with TeknoMotor this new motor has been developed. In the spindel nose it has a mechanical mechanism, that can pick up a HSK32-C toolholder. No air-pressure is required; this can be done with just an allen key (we advise to use a torque wrench and include it also with delivery).

This motor differs from the other QuickToolChanger C4147 motor by its type of cooling. Normal Electrospindles have fan blades at the end of the main shaft that provides cooling but also produces a lot of noise. Electrospindles with electric fan cooling have the advantanges that they make less noise at high speeds and provide sufficient cooling at low speeds where the normal shaft driven fan doesn't provide enough flow. The disadvantage is that the fan is not designed for the rapid radial movements of a CNC portal milling machine, which limits the lifespan of the fan. That is why these motors have a PTC130 for thermal protection and the fan is easy to replace.

Component features:

• Teknomotor part number: COM41470585
• Designed for radial and axial loads
• Motor type: Quick Toolchanger with Allen key (size 2.5mm)
• Power rating: 2.2kW
• Speed range: 6000 - 24000 rpm
• Bearings: DB - Double angular contact Bearing in spindle nose
• Toolholder: HSK32C; ER16, ER20 and ER25 collet size
• Frame: Extruded aluminium bar
• Stator: Three phase induction motor, insulation class F
• Rotor: Squirrel cage balanced according to ISO 1940, G2.5@24000rpm
• Type of cooling: Electric fan cooling (24VDC). Includes a PTC for detecting overheating
• Protection: IP 54
• Includes a torque wrench preset to correct torque for attaching the HSK32C toolholders
• WARNING: Do not run the motor without a toolholder attached, it will cause bearing damage!