Model: UB-10.
Type: Parallel Clevis.
Nominal Breaking Load: 80 kN.
Material: Hot-dip galvanized steel, stainless steel closing pin.
Corrosion Protection: Hot-dip galvanizing thickness ≥ 65 μm, in compliance with GB/T 2315-2017.
Plate Width: 10 mm.
Connection Aperture: 16 mm (accepts M16 bolts).
Dimensions: 80 mm (length) × 10 mm (width) × 8 mm (thickness) (estimated from comparable UB series).
Applications: Parallel connection of insulator strings in 10kV-35kV transmission lines, securing substation equipment to structures, and suspended fiber optic cable connections (for use with the UBX series).
The Ub-10 Clevis is a type of electrical hardware connection. The "U" designates the U-shaped structure, the "B" represents the bracket's characteristic shape, and the "10" indicates a breaking load of 100kV. The upper end is connected to the crossarm with long-stem bolts, which bear the load of a double shear plane. The lower end is connected by a slotted connection. Available in single-plate and double-plate versions, the two rotation axes form a 90° angle. It is manufactured from steel with a tensile strength of 372.5MPa and is hot-dip galvanized for enhanced corrosion resistance. In use, it connects insulators, suspension clamps, tension clamps, and protective hardware into suspension or tension strings, providing reliable connections between various components.
Many factors affect the service life of the Ub-10 Clevis, primarily in terms of corrosion resistance, stability, and insulation design:
Corrosion resistance
The thickness of the zinc coating determines the bracket's service life. Therefore, before use, check that the zinc coating is ≥60μm thick. Insufficient thickness will increase the corrosion rate.
Stability
Failure to use anti-loosening washers or insufficient torque during installation will shorten the bracket's service life.
Insulation design
The mechanical margin of the insulator string must be ≥2.5 times the working load. Otherwise, long-term overload will accelerate bracket fatigue.
Ub-10 Clevis can be manufactured using either hot-dip galvanized steel or cast iron. These materials differ in performance:
Hot-dip galvanized steel
Based on Q235B carbon steel, the surface is hot-dip galvanized for enhanced corrosion resistance, making it suitable for conventional power transmission environments. For highly corrosive environments, zinc-aluminum alloy-coated steel can be used, offering a 60% improvement in salt spray corrosion resistance.
Cast iron
Its primary advantage lies in its lower cost, lower tensile strength than steel, and limited use in certain environments, particularly heavy loads and highly corrosive environments.
Ub-10 Clevis made from hot-dip galvanized steel have a service life of 20-25 years, which is longer than that of cast iron. Therefore, we recommend choosing hot-dip galvanized steel when purchasing.
Both Ub-10 Clevis and Ub-7 Clevis belong to the UB type. What are the similarities and differences between the two?
Similarities: Both are U-shaped right-angle brackets with a 90° angle between their two rotating axes. They are primarily used to connect overhead conductors to insulator strings, and their surfaces are hot-dip galvanized for enhanced corrosion resistance.
Differences: They vary in size, breaking load, weight, and application scenarios.
When selecting a bracket, it's crucial to carefully analyze the bracket itself and its intended use, especially for the Ub-10 Clevis. The best option is the one that's right for you.
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