Refers to open-type chain structures without sealing rings, characterized by high transmission efficiency but requiring frequent maintenance.
Open Structure: Composed of alternating inner links (inner plates, bushings, rollers) and outer links (outer plates, pins), with the gap between pins and bushings directly exposed.
High Transmission Efficiency: With no seal resistance, energy transfer losses are minimal, typically yielding higher transmission efficiency than oil-sealed chains.
High Maintenance Requirements: Exposed lubrication points are susceptible to dust and moisture contamination, necessitating regular cleaning and relubrication (e.g., every 500 kilometers). Failure to do so accelerates wear.
Structural Characteristics of "Heavy-Duty Non-Sealed Chains" (Speculative): If referring to a chain combining "high load capacity" with "non-sealed" properties, its structure should integrate these characteristics: manufactured from high-strength alloy steel with thick, robust plates to withstand heavy loads; while maintaining an open-design pin and bushing configuration to maximize transmission efficiency. This necessitates more frequent and rigorous lubrication and maintenance cycles to sustain longevity and performance.
