“ Zero-Vibration Wheel with a high-performance NDI & MDI hybrid system to eliminate the flat spot effect and ensure seamless, zero-impact startup for critical wafer handling.”
In the world of semiconductor manufacturing, a field defined by extreme precision, even the slightest vibration can lead to irreversible yield loss.
The Hidden Threat: What is the Flat Spot Effect?
In a semiconductor Fab, the Stocker Crane acts as the heart of automated logistics, operating 24/7 to store and retrieve high-value Prime and Monitor wafers. However, during scheduled maintenance or temporary standby, the massive dead weight of the equipment rests on a fixed point of the polyurethane wheels for extended periods.
This continuous static pressure causes a temporary plastic deformation on the wheel surface, known as a Flat Spot. When the equipment restarts, these flat spots cause the crane to jump and vibrate violently upon initial movement. For FOUPs (Front Opening Unified Pods)housing fragile wafers, this sudden impact can easily cause micro-cracks or surface scratches, directly threatening the final yield.
The Core Breakthrough: Instant Recovery for Zero-Vibration Starts
Our newly developed Stocker Crane wheels utilize a high-performance NDI and MDI hybrid system. Compared to standard industrial polyurethane wheels, this product offers several critical advantages:
Superior Anti-Flat Spot Capability: Even under prolonged static high-load conditions, the wheel instantly regains its perfect circular shape upon startup, completely eliminating initial jitter.
Vibration-Free Stacking: We ensure the crane remains stable during start-stop cycles, providing a "zero-impact" handling environment for Wafer-Level Packaging (WLP) and MEMS wafers.
Excellent Dynamic Load Capacity: Engineered for the high-speed requirements of modern Fabs, these wheels feature an extremely low heat-generation rate, ensuring no debonding or softening during high-speed reciprocating motion.
Technical Specification Highlights:
Hardness Range: Precisely controlled at Shore A 93-95, balancing high load-bearing capacity with vibration damping.
ESD Safety: Stable electrostatic dissipative performance to protect sensitive integrated circuits from electrical surges.
Cleanroom Compatibility: Meets Class 10/100 cleanliness standards; materials are non-shedding and non-marking.
About Us
We are a leading global provider of high-performance polyurethane solutions, specializing in the semiconductor and industrial automation sectors. Our products have been adopted by multiple world-renowned Fabs, and we are committed to providing smooth, clean, and secure handling for the world’s most advanced technologies.
