High Frequency Spindles

High frequency spindle SF 1300P
Highly precise high frequency spindle SF 1300P with pneumatic tool change.

You should always decide for an HF spindle when your workpieces have to be processed with highest precision. Their true running accuracy lies in the range of a few micrometres.

  • high rotational speed
  • infinitely variable rotational speed spectrum
  • great rotational speed stability, even under load
  • very silent operation
  • high efficiency at low weight and size
  • precision bearing
  • high reliability
  • completely software-controlled
  • quick chucking device respectively pneumatic chucking device available

Due to their power of up to 1.3 kW, these spindles are also suitable for medium tool diameters. The high rotational speed enables amazing rates of feed with small carbide tools.

The spindles are available with different kinds of tool changing devices. The smallest model, SF 170, for instance is available with a quick chucking device with which you can even manage a manual tool change comfortably and fast. On top of that there is also a pneumatic chucking device available. For all spindles with pneumatic chucking device, we recommend an automatic tool changer, with which this process is being executed fully automatized within seconds.

The model SF 300 is either available with a manual chucking device or a pneumatic chucking device. All spindles from SF 650P up are always equipped with a pneumatic chucking device.

  • Technical data

    • see overview for power, rotational speed and chucking capacity
    • tool change: manual (SF 170 with quick chucking device) or pneumatic
    • connection for blocking air (except SF 160 and SF 170) which prevents entering of liquid and other foreign substances in the bearing area
    • software-controlled frequency converter with monitoring functions
    • displays for rotational speed, load, spindle overload etc. from SF 300 up
    • compressor cooling unit with 600 W cooling power for spindles from SF 1000P on

    Scope of delivery

    • HF spindle incl. motor cable and spindle carrier with cooling ribs
    • frequency converter (power depending on spindle type) in table housing or 19 inch slide-in housing for integration into the underframe of the machine or for installation into a system rack
    • all necessary connection cables
    • cooling unit for heat abstraction of the spindle (from SF 1000P up)
    • collet chucks: always 3 mm, additionally for SF 300 to SF 1300P: 4 and 6 mm

    The spindle type SF 160 has an adjustable height compensator in its mounting device for levelling height tolerances of up to 5 mm mechanically. The device is lockable for milling works.

  • Requirements

    Please note that you need a dry and oil-free compressed air supply for all high frequency spindles from SF 170P up. If the spindle has an pneumatic tool change, a constant pressure of 6 bar is required.

    The air consumption of the pneumatic tool change can be disregarded, the consumption of blocking air amounts, depending on the spindle size, to approximately 50 to 100 litres per minute. Depending on the whole equipment of your CAM system, it is possible to choose between different types of compressors. Several questions may lead you to the right model: how high is the consumption of blocking air, is there a cooling/spraying unit or a pneumatic tool change, how long are the hoses, what is the maximum noise level of the compressor?

    The spindle types from SF 1000P up will be delivered with a compressor cooling unit. For its installation, an appropriate 19 inch system rack is required.


Rotational speed
SF 160 160 W 2,000 –
manual no no ≤ 3.175 mm C
SF 170 170 W 240 W 240 W 5,000 –
quick chucking no no ≤ 3.175 mm C
SF 170P 170 W 240 W 240 W 5,000 –
pneumatic yes no ≤ 3.175 mm C
SF 300 300 W 340 W 360 W 5,000 –
manual yes no ≤ 6 mm P, AP, C
SF 300P 300 W 340 W 360 W 5,000 –
pneumatic yes no ≤ 6 mm P, AP, C
SF 650P 650 W 830 W 1,200 W 5,000 –
pneumatic yes no ≤ 6 mm P, AP, C
SF 1000P 1,000 W 1,100 W 1,600 W 5,000 –
pneumatic yes yes ≤ 6 mm P, AP, C
SF 1300P 1,300 W 1,500 W 2,500 W 5,000 –
pneumatic yes yes ≤ 6 mm P, AP, C

* mechanical output power under continuous load of the spindle (100 % machining time)
** mechanical output power during a simulated machining cycle (60 % machining time, 40 % positioning time)
*** maximum mechanical output power of the spindle
◯ value not determined