The Clevis Type Suspension Insulator Cap is a metallic fitting that connects porcelain or toughened glass insulating elements in high-voltage power transmission systems. Manufactured from ductile iron or hot-dip galvanized steel, it features a U-shaped configuration with parallel arms and a pinhole for secure attachment using a clevis pin and cotter pin. This design withstands mechanical loads from 40 kilonewtons (kN) to 300 kN while maintaining electrical integrity and mechanical stability in overhead lines.
The cap is applied in medium to high-voltage transmission lines, particularly in suspension insulator strings on straight pole towers. It is compatible with ceramic and glass disc insulators and allows minor positional adjustments through its flexible clevis design. The galvanized finish provides corrosion resistance and protection against moisture and environmental factors, supporting reliable performance in distribution and transmission networks.
Technical specifications include heights from 72 millimeters (mm) to 104 mm and mechanical classes from 55 kN to 240 kN. Creepage distances extend up to 380 mm in specialized variants designed for harsh conditions. The cap complies with international standards including International Electrotechnical Commission (IEC) 60471 and American National Standards Institute (ANSI) C29.2, ensuring consistent performance and interoperability across diverse installations.
Clevis Type Suspension Insulator Cap Manufacturer
ver 20 years of manufacturing history in pole line hardware, located in Hebei Province, China. We operate from 17,000 square meters of production workshops and 5,000 square meters of warehouses, with a team of over 170 employees including 30 professional technicians and 10 professional engineers dedicated to research and development.
Our extensive experience and investment in advanced technologies, such as hot forging and hot-dip galvanizing, ensure that our Clevis Type Suspension Insulator Caps deliver high tensile strength, durability, corrosion resistance, and easy installation for reliable performance in high voltage applications. We cover 100% of the high voltage insulator requirements for China Electricity Power Corporation, underscoring our capability and trust in the industry.
With strict quality control processes, including load testing and gauge tests adhering to IEC standards, we achieve the best quality insulator products for the 21st century. Our products are exported to over 40 countries worldwide, including Southeast Asia, Europe, Africa, and South America, demonstrating global reach and reliability.
We warmly welcome clients to buy our Clevis Type Suspension Insulator Caps in bulk, with quality assurance from our comprehensive testing and commitment to excellence.
| Size (MM) | Dimensions / H (MM) | Mechanical Class (KN) | IEC 60471 | ANSI C29.2 | Material | Surface Treatment |
|---|---|---|---|---|---|---|
| 50 | 71.9 | 55 | 16C | 52.1 / 52.2 | Ductile Iron | Hot-dip galvanized |
| 70 | 80.25 | 75 | 16C | 52.4 | Ductile Iron | Hot-dip galvanized |
| 100 | 89.2 | 105 | 16C | 52.4 | Ductile Iron | Hot-dip galvanized |
| 140 | 89.2 | 150 | 16C | 52.6 | Ductile Iron | Hot-dip galvanized |
| 175 | 91 | 185 | 19L | – | Ductile Iron | Hot-dip galvanized |
| 233 | 104 | 240 | 19L | – | Ductile Iron | Hot-dip galvanized |
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Frequently Asked Questions (FAQS)
What are the primary applications of clevis type suspension insulator caps?
Our clevis type suspension insulator caps are assembled with porcelain or toughened glass insulating elements for high voltage power transmission in overhead power lines, electrified railway catenary systems, and critical grid infrastructure projects.
What materials and manufacturing standards ensure reliability?
The caps are manufactured from ductile cast iron using hot forging techniques and finished with hot-dip galvanizing for superior corrosion resistance and tensile strength. They comply with international standards including IEC 60471, ANSI C29.2, and ISO. Each unit undergoes rigorous load testing and gauge tests to verify durability, with mechanical classes ranging from 40KN to 300KN, ensuring dependable performance in high-voltage transmission and railway electrification systems under constant vibration, dynamic loads, moisture, and pollution.
What sizes and specifications are available?
We offer standard sizes including 50MM, 70MM, 100MM, 140MM, 175MM, and 233MM, with dimensions ranging from 71.9MM to 104MM in height and mechanical strength from 55KN to 240KN to suit various load requirements.
How does the clevis design facilitate installation and maintenance?
The U-shaped clevis design, secured with a clevis pin and cotter pin, allows for easy assembly and disassembly while providing flexibility and strength under heavy mechanical loads, making field maintenance straightforward.
Can you handle large-volume orders with on-time delivery?
Yes, we support bulk orders with a minimum order quantity of 3000 pieces. Our 17,000 square meters of automated production facilities enable consistent output and timely delivery for EPC contractors and large-scale infrastructure projects.
What cost advantages do your clevis caps offer OEM clients?
Our combination of ductile iron materials, advanced hot forging, and multi-stage quality control delivers high strength and precision at competitive prices, helping OEMs reduce production expenses while maintaining uniform quality and brand integrity.
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