For PCB lines where boards tend to drift or jam, the 35/36 Middle Roller provides stable lateral guidance to keep panels centered through wet-process conveying.
Core Advantages: Chemical resistance, smooth guiding surface, precise molding, and reliable anti-offset performance.
Selection Recommendations: Choose the suitable diameter and bearing structure based on PCB thickness, track layout, and conveyor speed.
Applications: Conveyor guidance systems, positioning units, anti-collision assemblies, etching lines, and developing equipment.
Stable Operation Guarantee: Helps reduce board deviation, edge collision, and conveyor sticking during continuous production.
Ensuring Precise Guidance and Eliminating Conveyor Jams. One of the most persistent bottlenecks in PCB wet-process equipment is the deviation of boards within the conveyor system, often caused by worn-out guides or rollers. The 35/36 Middle Roller series provides the necessary structural support and lateral constraint to keep boards centered and moving smoothly. Designed to resist the harsh, chemical-rich environments of etching and developing lines, these rollers solve the problem of equipment “sticking” and mechanical instability. By maintaining constant alignment, you minimize Cross-contamination risks and prevent the costly downtime associated with skewed boards and damaged edge-drive systems.
Durability in Harsh Chemical Environments
Configurable Solutions for Diverse Lines
The 35/36 Middle Roller is a staple component across the PCB, FPC, and LCD manufacturing spectrum, specifically tailored for wet-process equipment. It is widely employed in conveyor guidance systems, positioning units, and anti-collision assemblies within etching machines, developing lines, and cleaning equipment. Its ability to withstand high-volume throughput makes it an essential part of continuous-run processes, including black-hole lines and surface-prep modules. By providing consistent contact and guidance, these rollers ensure that boards remain perfectly square to the processing modules, significantly reducing the probability of physical jams or transport failures during delicate etching or chemical application steps.
In modern PCB spray-etching lines, the 35/36 Middle Roller acts as the primary lateral guide to prevent board “wandering.” When a board veers off-course, it often hits the side of the spray module or, worse, jams the conveyor motor. By utilizing our precision-molded rollers, equipment manufacturers can ensure that the board remains centered within the spray headers for uniform chemical exposure. This drastically improves the consistency of the Etching process, ensuring that trace width tolerances remain within the narrow window required for high-density interconnects, directly improving the net yield per panel.
In the cleaning and rinsing sections of FPC equipment, managing the transport of thin, flexible circuits is a common challenge. These rollers act as anti-collision guides that provide just enough lateral pressure to keep the board on track without causing it to buckle. Unlike metallic rollers that can corrode or create debris, our plastic middle rollers provide a chemically neutral interface. This prevents Cross-contamination and maintains the purity of the process baths, which is vital for long-term Bath life. The ROI is reflected in reduced labor costs for clearing line jams and a noticeable decrease in product rework rates.
| Parameter | Industrial Specification |
| Model Number | 35/36 Middle Roller |
| Material | High-Strength Engineering Plastic |
| Function | PCB Guidance, Positioning, Anti-Collision |
| Fit/Tolerance | Precision Fit for High-Speed Conveyors |
To provide high-precision, high-performance PCB equipment accessories, empowering the global electronics manufacturing industry to achieve efficient production.
