Autonomous Mobile Robot Wheels for Cleanroom Environments

AMR wheels meet the requirements of cleanroom environments, such as the semiconductor industry, life sciences, and LCD manufacturing, featuring zero marking, silent operation, anti-static technology, and precise positioning.

Challenge: The dual challenges of cleanroom floor protection and dust-free operation

A company's GMP Class A (ISO 4) cleanroom utilizes high-specification, smooth, and expensive epoxy flooring. Their arms must operate 24/7 to transport pharmaceutical concentrates and finished products between the dispensing area, filling line, and quality inspection area, placing extremely high demands on the transport system:

Absolutely zero-marking: Made of medical-grade polyurethane (PU) with high elasticity and low hardness (shore a 70-85), the wheel surface creates uniform and gentle pressure distribution when in contact with the floor, effectively distributing the load. Even during sudden stops or pivoting while fully loaded, the floor remains unscathed, eliminating wheel marks and scratches.

Clean and dust-free: The polyurethane material undergoes an ultra-purification process, resulting in a VOC-free product that is also free of silicone oil, plasticizers, and other volatile organic compounds. In standard cleanroom friction tests, particle release (≥0.3μm) remains consistently below class 100 (ISO 5), and the wheel has passed international cleanroom material certifications such as semi f21 and ISO 14644-1.

Excellent chemical and weather resistance:

The wheel is highly resistant to common disinfectants, alcohol, and hydrogen peroxide, maintaining resistance to deformation, swelling, and powdering even under prolonged exposure, ensuring long-term stable operation in demanding disinfection environments.

Quiet and smooth: Equipped with precision sealed bearings and lightweight aluminum alloy/stainless steel hubs, the wheel operates smoothly with noise levels below 50db(a). The optimized material ratio and structural design improve the wheel's wear resistance by over 50%, extending its service life far beyond that of ordinary rubber wheels and reducing downtime and maintenance.

Solution: Specializing in "clean-grade polyurethane non-marking travel wheels"

Leveraging our extensive expertise in precision motion components, we have launched the "clean-grade polyurethane non-marking travel wheel" series, perfectly suited to the needs of high-end cleanroom applications.

Practical applications in cleanroom mobile robots

Polyurethane non-marking wheels have become a key component of many cleanroom mobile robots, playing an important role in various scenarios.

Semiconductor industry applications

In semiconductor fabs, cleanroom robots from manufacturers such as stäubli and Kuka widely use polyurethane wheels. These robots are responsible for handling sensitive materials such as wafer cassettes (foups) and photomasks between production lines.

Life sciences

In the pharmaceutical and biotechnology sectors, cleanroom mobile robots are required to perform tasks such as material transport and equipment movement. Mobile robots equipped with polyurethane wheels can operate in cleanroom environments ranging from ISO class 5 to class A, and can even withstand vaporized hydrogen peroxide (VHP) sterilization processes.

LCD manufacturing

In equipment handling, precision instruments such as LCD and plasma displays, polyurethane non-marking wheels, due to their smooth operation and low vibration, protect fragile materials from damage during transportation.