Unitec / Hiteco | CNC Accessories & Components
Hiteco HF Spindles: Industrial High-Frequency Spindles for CNC Milling Machines
Hiteco (formerly Unitec) is one of the world’s leading manufacturers of high-frequency spindles for CNC machining. The Italian precision spindles are characterised by extremely smooth running, high power density and a long service life.
In the BZT Shop you will find Hiteco HF spindles from 3.6 kW to 10 kW with speeds of up to 36,000 rpm. All models are designed for industrial continuous operation and have ceramic hybrid bearings, automatic tool clamping and integrated temperature sensors.
The Hiteco spindles are available with various tool holders: SK30 for versatile use, HSK63 for maximum precision at high speeds and HSK E40 as a compact alternative. All holders are compatible with our automatic tool changers.
You need a suitable frequency inverter to operate them. We will be happy to configure complete systems consisting of spindle, inverter and cooling on request. You will find further spindles and motors in our full range.
Frequently Asked Questions about Hiteco HF Spindles
What is a high-frequency spindle and what are its advantages?
A high-frequency spindle (HF spindle) is driven directly by an integrated electric motor – without belts or gears. Advantages: extremely high speeds (up to 60,000 rpm), low-vibration and low-wear operation, high concentricity accuracy and long service life. They are particularly suitable for fine machining, HSC milling and use with automatic tool changers.
Which Hiteco spindle is suitable for my CNC machine?
For BZT portal milling machines of the PF/PFK series, we recommend the 3.6–7.5 kW models with SK30 tool holder. For industrial applications with higher material removal rates, the 8–10 kW variants with HSK63 are suitable. The choice depends on the material (wood/plastic vs. metal), the desired spindle speed and the tool change system.
What is the difference between SK30 and HSK63?
SK30 (steep taper) is the widespread standard tool holder, robust and versatile. HSK63 (hollow shank taper) offers higher repeat accuracy, better concentricity and is optimised for spindle speeds above 24,000 rpm. HSK is preferred in CNC machining centres, while SK30 is the most common holder for gantry routers.
Do I need a water cooling system for the Hiteco spindle?
Hiteco spindles are water-cooled spindles – cooling is therefore absolutely essential. The water cooling system enables compact designs with high power output and ensures a constant temperature during continuous operation. We offer suitable industrial water chillers as accessories.