Elte Automatic Tool Changers
ELTE HF Spindles with Automatic Tool Change
ELTE is an Italian premium manufacturer of high-frequency spindles with more than 50 years of experience. The ELTE spindles in the BZT Shop are designed specifically for use with automatic tool changers (ATC) and enable fully automated CNC machining.
Our range includes ELTE HF spindles from 1 kW to 7 kW: the compact 1 kW / 50,000 rpm spindle with ISO10 interface is very well suited to engraving and fine work. The 2.2 kW (SK20) and 7 kW (SK30) models are designed for demanding milling work in wood, plastic and aluminium.
All ELTE spindles are characterised by ceramic bearings, high run-out accuracy and long service life. The pneumatic tool clamping enables tool changes within seconds, ideally in combination with a BZT CNC controller and a suitable tool changer magazine.
For the best possible integration into your BZT CNC gantry milling machine, we are happy to advise you on the right spindle and frequency inverter combination.
Frequently Asked Questions about Elte HF Spindles
What does ATC mean for HF spindles?
ATC stands for Automatic Tool Changer – automatic tool change. ATC spindles have a pneumatically actuated tool clamping system that is opened and closed via the CNC control. This allows the machine to independently switch between different milling cutters, drills or engraving tools during the program – without manual intervention.
Which Elte spindle is suitable for beginners?
For getting started with automatic tool change technology, we recommend the Elte 2.2 kW with SK20 spindle mount. It offers sufficient power for wood, plastic and aluminium, is compact enough for PF machines, and the SK20 system is cost-effective in terms of tool holders. The 1 kW / ISO10 is ideal if you mainly do engraving.
What is the difference between ISO10, SK20 and SK30?
The designations describe the tool holder size. ISO10 is the smallest (for micro/engraving tools up to approx. 6 mm shank), SK20 is the medium (tools up to approx. 13 mm) and SK30 is the largest (tools up to approx. 20 mm). Larger holders mean more rigidity and larger tools, but also higher weight and costs for tool holders.
Can I retrofit an Elte spindle to my existing BZT machine?
Yes, all Elte spindles can be retrofitted to BZT portal milling machines. Required items include: a suitable spindle mount (bracket), a frequency inverter for speed control, a compressed air supply for tool clamping and, if necessary, water cooling. BZT offers retrofit kits and technical advice for integration.