Application Guide: Choosing the Right Motion Technology

The Precisioneers provide integration-ready motion and guiding systems tailored to the most demanding industrial applications. Use this guide to identify the best-fitting actuator and bearing technologies based on your application requirements.

Semiconductor: Wafer Handling & Fine Positioning
Semiconductor: Lithography & Metrology
Medical Devices & Surgical Robotics
Microscopy & Optical Systems
Automation & Robotics
Aerospace & Satellite Systems
Industrial Machinery
High-Precision Inspection & CMM
Photonics & Optical Alignment
Additive Manufacturing / 3D Printing
Summary Table

1. Semiconductor: Wafer Handling & Fine Positioning

Recommended Drive:

Servo Motor (for macro positioning)
Stepper Motor (for holding tasks)
Flex-Hinge Piezo Actuator (for sub-micron fine adjustments)

Recommended Guide:

Ball Bearings (macro)
Flexure-Guided or Air Bearings (fine)

Use Case Highlights:

High-speed wafer loading and robotic transfer
Sub-micron wafer alignment for bonding, inspection, or lithography

Why it Works:
Servo motors handle long-travel, high-speed transport. Piezo-stepper motors can be an alternative, especially given their fast reaction time, but can only carry small loads (10s of Newtons). Flex-Hinge Piezo Actuators provide nanometer resolution with zero backlash. This dual-stage approach is ideal for back-end assembly or hybrid bonding processes.

Integration Tip:
Use capacitive or interferometric feedback for the piezo stage. Mount flexure stages on vibration-isolated granite or ceramic plates.

2. Semiconductor: Lithography & Metrology

Recommended Drive Technologies:

Linear Motors or Servo Motors (for long-travel, high-speed positioning)
Voice Coil Actuators (for fast, short-range dynamic corrections)
Flex-Hinge Piezo Actuators (for nanometer-scale final tuning)

Recommended Guide Technologies:

Air Bearings (for frictionless, cleanroom-compatible motion)
Granite Base or Hydrostatic Supports (for thermal and mechanical stability)

Use Case Highlights:

Reticle and wafer stage motion in photolithography
Overlay and alignment correction during exposure
Sub-nanometer scanning in scatterometry or ellipsometry
Reference movement in critical dimension (CD) metrology

Why it Works:
Modern semiconductor tools use multi-stage motion platforms:

A long-travel stage (linear/servo motor on air bearings) moves the wafer or mask with micron accuracy across hundreds of millimeters.
A voice coil or piezo stage is nested on top, enabling real-time correction for focus, tilt, or vibration — with update rates up to kHz.
Air bearings are essential for zero particle generation and hysteresis-free motion due to their self-purging operation.
For vertical (Z-axis) fine positioning of objectives and sensors, MIPOS systems from Piezosystem Jena are specifically optimized to minimize lateral runout in the non-moving axes — ensuring stability and repeatability in high-NA optical alignment tasks.

Metrology systems (e.g. CD-SEM, overlay tools) require even greater thermal and drift stability, often paired with active vibration isolation and interferometric feedback loops.

Integration Tip:
Use interferometric sensors or capacitive probes for closed-loop accuracy. Ensure multi-stage alignment is thermally compensated across all axes. Where possible, isolate high-speed stages from sensitive metrology elements using flexure decoupling.

3. Medical Devices & Surgical Robotics

Recommended Drive:

Stepper Motor
Voice Coil Actuator
Ultrasonic Piezo Motor

Recommended Guide:

Ball Bearings

Use Case Highlights:

Infusion pumps
Endoscopic tool control
MRI-compatible motion modules

Why it Works:
Precision and reliability in compact spaces. Voice coils and ultrasonic motors enable silent, high-speed actuation without electromagnetic interference.

4. Microscopy & Optical Systems

Recommended Drive:

Voice Coil Actuator
Flex-Hinge Piezo Actuator

Recommended Guide:

Air Bearings

Use Case Highlights:

Autofocus
Z-stack imaging
Tunable optics

Why it Works:
Flex-hinge actuators allow high-resolution tilt or Z-axis motion with a very fast reaction time. Voice coils can achieve longer travel ranges than flex hinge piezo, at lower system costs. Combined with air bearings, this enables ultra-smooth imaging systems.

5. Automation & Robotics

Recommended Drive:

Piezo Stepper Motor
Stepper Motor
Servo Motor

Recommended Guide:

Ball Bearings

Use Case Highlights:

Gantry systems
Smart factory linear stages
Pick-and-place

Why it Works:
Piezo steppers offer compact, long-travel precision. Stepper motors are cost-effective and easy to control. Ball bearings balance precision with robustness and cost-efficiency.

6. Aerospace & Satellite Systems

Recommended Drive:

Flex-Hinge Piezo Actuator
Voice Coil Actuator

Recommended Guide:

Flexure Mounts
Roller Bearings

Use Case Highlights:

Satellite optics
In-orbit micro-positioning
Lightweight space robotics

Why it Works:
No lubrication needed. Flexure designs ensure predictable motion even in vacuum and ensures long life times. Roller bearings absorb launch shock and radial loads.

7. Industrial Machinery

Recommended Drive:

Servo Motor

Recommended Guide:

Roller Bearings
Air Bearings

Use Case Highlights:

Packaging lines
CNC spindle motion
Conveyor systems

Why it Works:
High load capacity and rugged design. Roller bearings outperform ball bearings under sustained mechanical stress. Air bearings in contrast achieve higher stability in terms of flatness and linearity of the motion. Wear and tear, as well abrasion, are drastically reduced which is perfect for clean environments.

8. High-Precision Inspection & CMM

Recommended Drive Technologies:

Servo Motor (for long-travel base motion)
Linear Motor (for vibration-free scanning stages)
Flex-Hinge Piezo Actuator (for fine, nanometer adjustments)

Recommended Guide:

Air Bearings (for frictionless, precise motion)
Granite or Polymer Concrete Base (for thermal and vibrational stability)

Use Case Highlights:

High-accuracy scanning over large areas
Sub-micron probe movement for surface measurements
Interferometric or capacitive feedback systems

Why it Works:
In most CMMs and inspection systems, a dual-stage approach is optimal:

A servo or linear motor provides long-travel movement with good speed and load capacity.
A piezo actuator is integrated into the probe or optical path to correct the final nanometer-scale displacement, minimizing stiction and reversal errors.
Air bearings ensure smooth, non-contact translation without introducing backlash or particulate contamination, which is critical in metrology.

Integration Tip:
Use interferometers or capacitive sensors for direct metrology feedback. If environmental conditions are variable, consider integrating thermal compensation and vibration isolation to maintain accuracy below 50 nm.

9. Photonics & Optical Alignment

Recommended Drive Technologies:

Flex-Hinge Piezo Actuators (for sub-micron or angular tuning)
Voice Coil Actuators (for fast dynamic focus or scanning)
Ultrasonic Piezo Motors (for compact, step-like motion in confined spaces)
Servo or Stepper Motors (for coarse positioning over larger travel ranges)

Recommended Guide:

Air Bearings (for frictionless motion of sensitive optics)
Flexure Stages (for angular stability and compactness)

Use Case Highlights:

Laser beam alignment and focusing
Optical component tuning (mirrors, lenses, prisms)
Interferometer path length adjustment
Fiber coupling and automated photonic packaging

Why it Works:
Photonics applications demand nanometer-scale resolution without mechanical noise or backlash.

Flex-Hinge Piezo actuators offer precise angular or linear adjustments without hysteresis — ideal for mirror tilts and optical path tuning.
Voice coils provide fast scanning or focus changes, e.g. in optical coherence tomography (OCT) or galvo replacements.
Ultrasonic motors are useful for compact, power-efficient actuation in embedded devices or fiber aligners.
Servo/stepper motors support longer-range motion such as initial alignment of rails, lens turrets, or translation stages.

Integration Tip:
Combine coarse-fine actuation in critical beam paths: e.g., a servo-driven linear rail with a nested piezo stage on the optic. Use air bearing guides where laser stability or sub-nanometer angular resolution is required.

10. Additive Manufacturing / 3D Printing

Recommended Drive:

Stepper Motor

Recommended Guide:

Ball Bearings

Use Case Highlights:

Extrusion head control
Z-lift platforms
Motion in FDM/SLA printers

Why it Works:
Low-cost, highly reliable steppers paired with recirculating ball bearings ensure smooth and precise 3D motion control.

11. Summary Table

Application	Drive Technology	Guide Technology	Key Requirements	Target Resolution	Target Travel Range	Target Bandwidth / Speed
Wafer Handling & Fine Positioning	Servo + Flex-Hinge Piezo	Ball Bearing + Flexure or Air	Nanometer accuracy, high throughput	<10 nm	100–500 mm (servo); 20–	Up to 100 Hz (piezo); fast
Lithography & Metrology	Linear Motor, Voice Coil, Flex-Hinge Piezo	Air Bearing	Sub-nm resolution, no hysteresis, thermally stable, cleanroom-ready	<1 nm	300 mm (linear); <100 µm (piezo)	>1 kHz correction loop
Medical Devices	Stepper, Voice Coil, Ultrasonic Piezo	Ball Bearing	Compact, precise, safe for clinical environments	10–100 µm	5–50 mm	Up to 50 Hz
Microscopy & Optical Systems	Voice Coil, Flex-Hinge Piezo	Air Bearing	Smooth Z/tip-tilt motion, low noise	<5 nm	100 µm – 1 mm	100–500 Hz
Automation & Robotics	Piezo Stepper, Stepper, Servo	Ball Bearing	Long travel, repeatability, reliability	1–10 µm	50–500 mm	Moderate (10–30 Hz) or step-based
Aerospace & Satellite Systems	Flex-Hinge Piezo, Voice Coil	Roller Bearing or Flexure	Vacuum-compatible, low outgassing, precise	<10 nm	50 µm – 5 mm	Up to 1 kHz (optical tuning)
Industrial Machinery	Servo Motor	Roller Bearing	High force, ruggedness, accuracy	10–50 µm	100–1000 mm	Low to moderate
Inspection / CMM	Servo, Linear Motor, Flex-Hinge Piezo	Air Bearing	Frictionless scanning, sub-micron accuracy	<50 nm	100–300 mm (servo); <100 µm (piezo)	10–100 Hz scan rates
Photonics / Optical Alignment	Flex-Hinge Piezo, Voice Coil, Ultrasonic Piezo, Stepper	Air Bearing, Flexure	Angular stability, compact integration, nm tuning	1–50 nm	5–50 mm	10–500 Hz
3D Printing	Stepper Motor	Ball Bearing	Low cost, simple control, repeatable motion	50–200 µm	100–300 mm	Low

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