With a compact design at high speed, low noise, long and stable operational life. NK Automations spindle for cnc machines is small enough for light machines, but powerful enough to get the job done. With an 20,000-200,000 RPM range, Motor power: 0.85-1.2 (KW), and Static Runout :≤2.0μm, the spindle is ideal for PCB drilling and routing, and other similar applications.
Other features include superior quality, enhanced reliability, smooth motion and balancing stability.
Distinctive Features:
1. High precision: dynamic precision≤8μm, static precision≤2μm, shaft rotation runout≤1μm.
2. Small volume, small inertia, small heat variables.
3. Balance Grade: G0.4, low vibration, low noise.
4. High configuration: quick ATC system, optional temperature sensor, super precision ceramic ball bearing.
5. Low failure rate: Precision design, simple structure and easy maintenance.
6. Dustproof and waterproof: The front end of spindle adopts a multi-layer labyrinth structure to improve the dust sealing and waterproof effect.
7. High rigidity: Built-in motor, the front bearing seat and the spindle are integrated, and the overall rigidity and the coaxial precision are greatly improved.
| Spindle Specification | |||||
| Spindle model | NK-ATC SPINDLE | Speed range(rpm) | 60,000 | ||
| Voltage range(V) | 200 | Frequency(Hz) | 1000 | ||
| Max. Current(A) | 5 | Max Power(Kw) | 1.2 | ||
| Bearing type | Air Bearing | Spindle weight（kg） | 4.6 | ||
| Item | Technical Parameter | ||||
| 1 | Static Runout（μm） | ≤2.0 | |||
| 2 | Dynamic Runout（μm） | ≤8.0 | |||
| 3 | Vibration（mm/s） | ≤1.0 | |||
| 4 | Collet torque（N.cm） | ≥250（ø3.175） | ≥382（ø6） | ||
| 5 | Winding withstand voltage test | 1500V/1min Withstand voltage test | |||
| 6 | Cooling water temperature（℃） | 20±2 | |||
| 7 | Cooling water flow（L/min） | ≥1.2 | |||
| 8 | Cooling oil flow（L/min） | ≤3.0 | |||
| 9 | Cooling oil temperature（℃） | 20±2 | |||
| 10 | Collet type | Removable type | |||
| 11 | Spindle Air pressure（kgf/cm²） | 1.0-1.5 | |||
| 12 | Spindle Air flow（L/min） | 48—54（at 2kg/cm²） | |||
| 13 | Cooling system pressure（kgf/cm²） | 2.0-4.0 | |||
