– (High-pressure) aerostatic tool spindle with integrated BLDC motor and automatic spring-less HSK-E 25 interface (SLH25) –
U/ASD-H25A (front view)
About our “ASD-H25A/ UASD-H25A” – what to expect
with axially (A) arranged spindle connectors
Speeds of up to 90,000 rpm for micromachining
Lowest spindle errors (DIN ISO230-7) in its class for the machining of optical components especially with iron-less motor option
Also available with high-pressure aerostatic bearing system ( UASD-H25A)
Automatic spring-less HSK-E 25 tool interface according to DIN 69893-5 (SLH25)
Our ASD-H25A (aerostatic) and UASD-H25A ( high-pressure aerostatic) models meet all the requirements for high-quality spindles to generate optical-quality surfaces with maximum form precision. They combine robustness and functionality for multi-axis CNC machining at high speeds for micromachining and minimal spindle errors according to DIN ISO 230-7, which are crucial for the machining of optical components. Our spindles are characterized by a high-resolution rotary encoder and a high-efficient thin-film liquid cooling. In addition, they offer tool clamp monitoring and a standardized housing diameter of 100 mm (h5). Especially for their use in CNC machining, they are also available with our new hybrid bearing system, which significantly increases overload and collision safety and is suitable for tools up to a diameter of 4 mm.
For users in precision machining, these features result in superior accuracy, thermal and dynamic stability and the ability to machine optical surfaces in milling and grinding applications. In ultra-precision machining, the reachable high chip removal rate – together with an automated tool change – enables a significant increase in productivity and automation.
Our spindle sare also available with radially arranged spindle connectors…
Tool interface Automatic spring-less HSK-E 25 tool interface (SLH-25) Housing Diameter Ø 100 mm Lenght 408 mm Weight 16 kg Available speeds 0 - 60,000 rpm; 0 - 80,000 rpm; 0 - 90,000 rpm Motor options 400 V max., "High-performance, 0.7 Nm S1 / 200 V max., "High-performancer", 0.7 Nm S1 400 V max., "Iron-less", 0.33 Nm S1 / 200 V max., "Iron-less", 0.33 Nm S1 Angular position control 1 VSS SinCos, 80 lines, zero-flag Tool change system Pneumatic, 3 bit tool clamping status monitoring;, taper cleaning air Spindle cooling Thin-film liquid cooling Bearing system Aerostatic (ASD-H25A), 6-10 bar High-Pressure Aerostatic (UASD-H25A), 20-30 bar Accuracy, dynamics Dynamic tool run-out < 0.5 µm *) Shaft Error in motion < 30 nm Spindle connectors Axially outgoing (Dmax 100 mm) *) if used with UTS-25 tool holders series
The patented high-pressure aerostatic bearing system of our UASD models is designed to operate with an air supply pressure of 20-30 bar. It provides a load capacity at the spindle nose – verified in customer tests – that is 200% higher than our standard bearings operated at 6 bar.
Note: To operate any high-pressure model (
UASD-x), you may require a different air compressor or an additional pressure booster and – more importantly – an air dryer that provides a dew point of 3°C at the supply pressure
(20-30 bar)
Aerostatic Bearing High-pressure Aerostatic Bearing ASD060H25A UASD060H25A *) Bearing air supply pressure [bar] 6 - 10 20 - 30 Available speed [rpm] 0 - 60,000 0 - 60,000 Radial load capacity at the spindle nose [N] 330 900 Axial load capacity at the spindle nose [N] 650 1,300 Static radial zero point stiffness at the spindle nose [N/µm] 41 83 Static axial zero point stiffness at the spindle nose [N/µm] 60 75 Static air consumption [Nl/min] 50 90 Dynamic tool run-out **) [µm] < 0.4 < 0.3 Shaft Error in motion **) [nm] < 23 < 28 *) all values are taken at 20 bar bearing air supply pressure / **) when using the UTS-25 tool holder series
U/ASD-H25A (rear view)
Available and well-proven housing options:
Using thermal shrinking, any bespoke housing can be supplied to you by mounting flange units onto the cylindrical standard steel-housing. These flange units can provide tapped bores, axial shoulders or radial guide diameters to
mount the spindle into your vertical or horizontal machining setup.
Let us know your design envelope, and we will design and provide the right flange unit for you.
Your contact
If you have any questions, need further information or would like to purchase one of our products, please contact us at any time!
