Automation Equipment

Specialized Rotary Unions for ISO 7 Cleanrooms: Meeting High-Precision Standards in Automation

2026-02-27 16:41:04

For industrial automation engineers in hubs, designing for a Class 10,000 (ISO 7) cleanroom presents a unique set of challenges. When a custom application requires both pneumatic power and electrical signals to pass through a rotating interface, the choice of a rotary union can make or break the system's compliance.

At JINPAT, we specialize in integrated solutions that combine fluid and electrical transmission while maintaining strict cleanroom integrity.

1. The Cleanroom Challenge: Why Standard Slip Rings Fail

In an ISO 7 environment, particle emission is the enemy. Standard slip rings with carbon brushes or low-grade lubricants can shed micro-particles, leading to catastrophic failure in semiconductor or medical assembly lines.

  • JINPAT’s Cleanroom Approach: We utilize high-grade sealing technology and specialized surface treatments to ensure that our Integrated Rotary Unions meet or exceed ISO 7 standards.

  • Minimal Running Torque: As requested by our recent automation clients, we optimize internal friction to provide the lowest possible running torque, ensuring the precision of your robotic arms or rotating stages.


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2. Technical Spotlight: 2-Air Circuit + Through-Bore Integration

A common configuration for high-end automation is a 2-channel pneumatic union integrated with a >0.75" through-bore.

  • Through-Bore Advantage: The 0.75" (19mm) or larger bore allows for additional electrical wiring, fiber optics, or mechanical shafts to pass through the center.

  • Pneumatic Precision: Designed for stable air pressure delivery without leakage, critical for vacuum pick-and-place or pneumatic actuators in clean environments.


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3. Material Science & Compliance

For the U.S. market, material transparency is non-negotiable. JINPAT ensures:

  • Non-Outgassing Materials: All seals and lubricants are selected to prevent chemical outgassing.

  • RoHS & REACH Compliance: Essential for medical and laboratory equipment manufacturers in the United States.

Case Inquiry: A recent client requested a custom solution for an automation machine in an ISO 7 cleanroom. By recommending a JINPAT integrated air-electric unit with a through-bore, we solved both the spatial constraint and the contamination risk in one design.

At JINPAT, we don't just sell products; we engineer solutions. With nearly 30 years of experience and a specialized R&D team, we are ready to solve your most complex rotary transmission challenges. Whether you require MIL-spec compliance or IP69 submersible protection, our technical team is available for immediate consultation.[Contact JINPAT Engineering for a Custom Quote]