http://www.vhf.eu/en/Machines/MachiningUnits/HighFrequencySpindles

High Frequency Spindles

Technical Data

High Frequency Spindles, Generally

	See table for nominal 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

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.

System racks can be found here.

Advantages

	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

Scope of Delivery

	HF spindle incl. motor cable and spindle carrier with cooling ribs
	Frequency converter (power depending on spindle type) incl. 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.

For Re-orders

Collet chucks and accessories see expendable items

Suitable Machine Lines

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. 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 tool diameters.

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

The spindles can be equipped 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 within seconds.

High frequency spindle SF 170 with quick chucking device.

The model SF 300 is either available with a manual chucking device or a pneumatic chucking device. For all spindles with pneumatic chucking device, we recommend an automatic tool changer, with which this process is being executed fully automatized within seconds. All spindles from SF 650P up are always equipped with a pneumatic chucking device.

Adequate tool changing units can be found here.

High frequency converter (included in scope of delivery).

Compressor cooling unit (from SF 1000P on).

Overview HF Spindles

Model	Power S1*	Power S6**	Power Pmax***	Rotational speed (RPM)	Tool Change	Blocking air	Cooling unit	Chucking capacity	Model range
SF 160	160 W	◯	◯	2,000–50,000	manual	no	no	≤ 3,175 mm	C
SF 170	170 W	240 W	240 W	5,000–60,000	quick chucking	no	no	≤ 3,175 mm	C
SF 170P	170 W	240 W	240 W	5,000–60,000	pneumatic	yes	no	≤ 3,175 mm	C
SF 300	300 W	340 W	360 W	5,000–60,000	manual	yes	no	≤ 6 mm	C, P, AP
SF 300P	300 W	340 W	360 W	5,000–60,000	pneumatic	yes	no	≤ 6 mm	C, P, AP
SF 650P	650 W	830 W	1,200 W	5,000–60,000	pneumatic	yes	no	≤ 6 mm	C, P, AP
SF 1000P	1,000 W	1,100 W	1,600 W	5,000–80,000	pneumatic	yes	yes	≤ 6 mm	C, P, AP
SF 1300P	1,300 W	1,500 W	2,500 W	5,000–60,000	pneumatic	yes	yes	≤ 6 mm	C, P, AP
* S1 mechanical output power under continuous load of the spindle (100 % machining time) S6 mechanical output power during a simulated machining cycle (60 % machining time, 40 % positioning time) * Pmax maximum mechanical output power of the spindle ◯ value not determined The spindle types SF 170, SF 170P, SF 300 and SF 300P are optionally available with a rotational speed range up to 100,000 RPM.