U clevis
U clevis, also known as an anchor shackle or clevis fastener, is a U-shaped metal fastening device used in overhead line systems and electrical installations. This component features a U-shaped body with holes at the end of each prong, designed to accept a clevis pin for secure connections. The clevis is typically manufactured from high-strength steel or malleable iron and hot-dip galvanized to ensure durability and corrosion resistance. It serves as a crucial connecting element in various electrical applications, particularly in transmission and distribution systems.
The U clevis is designed to work seamlessly with multiple components including thimble eye nuts, guy grips, dead-end clamps, and insulator assemblies. Installation involves inserting the clevis pin through the aligned holes of both the U clevis and the connecting component, then securing it with a cotter pin or lock nut. This creates a strong, reliable connection point that can withstand significant mechanical loads while allowing necessary movement in the system.
Key Features:
– Load capacity: 70kN for standard models
– Material: Hot-dip galvanized steel or malleable iron
– Pin diameter: 16mm or 20mm standard sizes
– Working temperature: -40°C to +85°C
– Compatible with guy wire sizes: 7/16″ to 5/8″
D Type U Clevis Drawing
stable design Catalog No. | Catalog No. | Main dimensions(mm) | Specified Failure Load (kN) | ||||
C | M | d | H | R | |||
U-7 | 20 | 16 | 16 | 80 | 10 | 70 | |
U-10 | 22 | 18 | 18 | 85 | 11 | 100 | |
U-12 | 24 | 22 | 20 | 90 | 12 | 120 | |
U-16 | 26 | 24 | 22 | 95 | 13 | 160 | |
U-21 | 30 | 27 | 24 | 100 | 15 | 210 | |
U-25 | 34 | 30 | 26 | 110 | 17 | 250 | |
U-30 | 38 | 36 | 30 | 130 | 19 | 300 | |
U-0770 | U-0770 | 20 | 16 | 16 | 70 | 10 | 70 |
U-1085 | U-1085 | 20 | 18 | 16 | 85 | 10 | 100 |
U-1290 | U-1290 | 22 | 22 | 18 | 90 | 11 | 120 |
U-1695 | U-1695 | 24 | 24 | 20 | 95 | 12 | 160 |
U-21100 | U-21100 | 24 | 24 | 20 | 100 | 12 | 210 |
U-25100 | U-25100 | 28 | 27 | 24 | 110 | 14 | 250 |
U-32115 | U-32115 | 36 | 32 | 28 | 130 | 18 | 320 |
UK-0770 | UK-0770 | 24 | 16 | 16 | 70 | 12 | 70 |
UK-1085 | UK-1085 | 26 | 18 | 16 | 85 | 13 | 100 |
UK-1290 | UK-1290 | 26 | 22 | 18 | 90 | 13 | 120 |
UK-1695 | UK-1695 | 28 | 24 | 20 | 95 | 14 | 160 |
UK-21100 | UK-21100 | 30 | 24 | 20 | 100 | 15 | 210 |
UK-32130 | UK-32130 | 36 | 30 | 28 | 130 | 18 | 320 |
UK-0770T | UK-0770T | 28 | 16 | 16 | 70 | 12 | 70 |
UK-1290T | UK-1290T | 28 | 22 | 18 | 90 | 13 | 120 |
Frequently Asked Questions
What is a U Clevis?
A U clevis is a D-shaped pole line accessory used for connecting components in utility applications, particularly for attaching spool insulators to utility poles.
What are the main components of a U Clevis?
The main components include:
- The U-shaped clevis body
- Clevis pin
- Cotter pin
- Angle bracket (in some models)
How strong is a U Clevis compared to other fasteners?
A U clevis pin is typically stronger than a standard bolt because it fills the entire diameter of the hole. For example, while a clevis pin for an 8mm hole utilizes the full 8mm diameter, an M8 bolt only has a 6.65mm core diameter.
What are the primary applications in utility systems?
- Connecting spool insulators to poles
- Balancing strains at corners
- Providing attachment points for conductors
- Minimizing turning resistance in overhead lines
Are U Clevis pins hardened?
Yes, U clevis pins are typically hardened to ensure durability and maintain structural integrity under load conditions in utility applications.
