Product Introduction
In high-precision motion control, the AEROTECH BAI20-320 linear stage is a workhorse for automated positioning. This 320mm travel stage is engineered for integration into multi-axis systems where repeatable, accurate linear movement is non-negotiable. It’s the kind of component you specify when a custom motion solution needs a reliable, off-the-shelf foundation.The value of this stage comes from its mechanical design. The recirculating ball bearing guide system provides high stiffness and smooth motion, while the preloaded ball screw drive eliminates backlash. This design choice is actually clever—it delivers performance that would otherwise require a more expensive linear motor system, but with a simpler integration path. You get 320mm of travel with the mechanical integrity needed for demanding applications.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | BAI20-320 |
| Manufacturer | AEROTECH |
| Series | BAI Series |
| Travel | 320 mm |
| Drive Mechanism | Preloaded Ball Screw |
| Guide System | Recirculating Ball Bearing |
| Mounting | Metric (M4 & M6 Tapped Holes) |
| Homing Sensor | Optical Limit/Home (Standard) |
| Motor Compatibility | Stepper or Servo (NEMA 23/34 Frame) |
| Encoder Compatibility | Compatible with Linear Encoders |
Application Scenarios & Pain Points
A production line goes down because a linear stage seizes up. The maintenance lead finds the bearings are shot and the screw is worn. This isn’t just a parts failure; it’s a symptom of a component that wasn’t specified for the load or duty cycle. The AEROTECH BAI20-320 is designed to prevent this. Its robust mechanical construction handles the rigors of continuous operation, turning a potential point of failure into a reliable asset.
- Automated Optical Inspection (AOI): In AOI systems, the stage moves a camera or sensor array across a product. Any vibration or positional error ruins the measurement. The BAI20-320’s smooth ball bearing guide system minimizes vibration, ensuring the imaging system captures clear, accurate data.
- Precision Dispensing: What happens when a dispensing needle isn’t positioned correctly? You get a bad seal or wasted material. This stage provides the repeatable linear motion needed to place a bead of adhesive or sealant in the exact same spot, thousands of times a day.
- Laser Marking and Cutting: The stage positions a part under a laser head. Its 320mm travel allows for processing larger components or creating longer marks in a single pass. The mechanical stiffness is critical here to prevent deflection under the part’s weight, which would throw off the laser’s focal point.
- Semiconductor Handling: In wafer handling or die sorting, you’re moving fragile, expensive components. The stage’s precise motion control, driven by a compatible servo or stepper motor, allows for gentle yet rapid pick-and-place operations without damaging the product.
Quality Control Process
We understand that a bad motion component can scrap an entire batch of product. We don’t just ship boxes; we verify performance. Here is the inspection process every BAI20-320 goes through before it leaves our facility.
- Inbound Inspection: We verify the source with OEM packing lists and check serial numbers against AEROTECH records to prevent counterfeits. We then perform a visual inspection for any signs of corrosion, scratches, or repair attempts. All accessories, like limit switch cables, are audited.
- Live Functional Test: The stage is mounted to our test bench and connected to an AEROTECH Soloist controller. We run a power-on self-check, monitoring the controller for any fault codes. Then, we command a full 320mm travel cycle, listening for abnormal noises from the ball screw or bearings. We run this cycle continuously for over 24 hours, logging the motor temperature to ensure it stays within spec.
- Electrical Parameters: We use a multimeter to check the continuity of the homing and limit sensors. We also perform an insulation resistance test on the motor windings to ensure there are no shorts to the stage body.
- Firmware Verification: We read the firmware version from the connected controller to ensure compatibility with common AEROTECH automation software. If the stage has any onboard electronics (like an encoder interface), we verify their settings.
- Final QC & Packaging: After passing all tests, a technician signs off on the QC report. The stage is cleaned, coated with a light防锈 oil, sealed in an anti-static bag, and packed in a custom foam-lined carton.
Installation Pitfalls Guide
I’ve seen more than one expensive motion system fail on day one because of a simple installation mistake. It’s frustrating and completely avoidable. Here are the top five things to watch out for when installing your BAI20-320.
- ❗ Firmware version mismatch: A new stage might have a motor with different characteristics than the one it’s replacing. If your controller’s firmware is old, it might not tune the motor correctly, leading to oscillation or a fault. Always check your controller’s firmware version against the motor’s specs before you start tuning.
- ❗ DIP switch / jumper misconfiguration: If your stage has an encoder or brake, there will be DIP switches or jumpers. The factory default is rarely what your application needs. Take a photo. Then take another one. of the settings on the old unit before you disconnect it.
- ❗ Terminal / wiring incompatibility: The motor and sensor connectors might look the same as your old brand, but the pinout is almost certainly different. Don’t just plug in your old cables. Cross-check the wiring diagram in the BAI20-320 manual with your controller’s pinout. A reversed sensor wire can fry an input card.
- ❗ Power supply undersizing: This new stage might draw more current than the old one, especially during acceleration. Calculate the total current draw for your entire axis with a 20% headroom. An undersized power supply will cause brown-outs and mysterious faults that are a nightmare to debug.
- ❗ ESD damage: You wouldn’t skip a seatbelt, so don’t skip the wrist strap. Static electricity can damage the sensitive electronics in the limit switches or an onboard encoder. Ground yourself before touching any connectors. One shock and a $2,000 stage can become a very expensive paperweight.
