Aerostatic Full-Range CNC Tool Spindle with HSK-E40 Tool Interface

Rough machining with a 10 mm cutter in steel and wear-free, ultra-precise and stable high-speed machining at 60.000 rpm would save the machine user an aditional machine for the creation of precision molds and would guarantee optical surface finish at the same time. With our tool spindle model UASD-H40 Levicron have achieved this goal and can now provide a unique true full-range aerostatic CNC tool spindle with HSK-E40 tool clamping and speeds of up to 60.000 rpm.

The patented high-pressure aerostatic bearing system generates a radial and axial load capacity at the tool of up to 7.000 N / 1.400 lbs, but on the other hand also the energy saving, the speed and the ultra-precision operation of our ASD-H25/A with HSK-E25 tool interface. Compared to hydrostatic tool spindles our UASD-H40 offers not only comparable load capacities at 50% less energy costs, remarkably cost savings for peripherals and 50% more spindle speed, but because of the much more simple sealing technology also a very compact and easy to maintain spindle design.

It was designed into a standard size steel housing with 120 mm in diameters, and together with the new in-house developped spring-less automatic HSK-E40 tool interface and the high-pressure shaft rotary feedthrough capable of leading any gas or fluid at -1 to 80 bar pressure to the tool tip our UASD-H40 represents the first true full-range aerostatic CNC tool spindle with HSK-E40 tool interface and speeds of up to 60.000 rpm.


 Tool interface:

Spindle diameter:

Motor options:

Motor torque:

Shaft power:

Angular position control:

Nominal speed:

Ult. static radial load capacity at spindle nose:

Radial static stiffness at spindle nose, concentric shaft:

Ult. axial load capacity:

Axial static stiffness:

Tool change system:

Spindle cooling:

Bearing system:

Accuracy, dynamics:


Axial shaft growth:

Medium rotary feedthrough:

Total lenght:


HSK-E40, spring-less

120 mm

Permanent magnet-DC, 2-Poles, 3 Phases

4 Nm, S1/100%

11 kW, S1/100%

1VSS SinCos, 88 lines, zero-flag

0 – 60,000 rpm

> 2.500 N

> 120 N/µm *)

> 3.000 N

> 200 N/µm *)

pneumatic, 4bit tool clamp status monitoring, tape cleaning air

thin-film liquid cooling

high-pressure aerostatic, 40 -60 bar

dynamic tool run-out < 1 µm *)

Error-motion < 50 nm

6 micron **)

aerostatic for Vacuum, any gas or liquid at up to 70%

500 mm

32 kg

*) if used with Levicrons tool holder series UTS-40

**) from cold / standstill to 60krpm/ heated through

*) all values at 60 bar bearing supply pressure
**) all values at 20 bar bearing supply pressure

*) including bearing and material stiffness

**) if used with Levicrons tool holder series UTS-40

  • Download Catalogue

Download the product catalogue of our UASD-H40 for further information.

  • Download Installation Drawing

Download the installation drawing for our UASD-H40