The Tongue-and-Groove Ladder Horizontal Bend is a precision-engineered fitting designed to change the horizontal direction of a ladder cable tray system (e.g., 30°, 45°, 90°) while maintaining the structural integrity and alignment of the tongue-and-groove (T&G) joint system. This fitting features side rails with integrated tongue (male) and groove (female) connectors that interlock with adjacent straight sections, providing a rigid, self-aligning connection that resists racking and simplifies installation.
Key Features & Benefits:
Self-Aligning Connection: The T&G design ensures perfect rail alignment during assembly, reducing installation time and eliminating misalignment issues common with lap-joint systems.
Enhanced Rigidity: The interlocking joint provides superior resistance to torsional forces and racking, maintaining the bend's shape under heavy cable load.
No Loose Hardware in Joint: Unlike lap joints that require bolts to be inserted through overlapping plates, the T&G system often uses external splice plates, making assembly easier, especially in tight spaces.
Ventilation Maintained: The open ladder rung design is preserved through the bend, ensuring continuous airflow for cable cooling.
Corrosion Protection: Typically hot-dip galvanized after fabrication (HDG), providing full corrosion protection at the critical joint surfaces.
Technical Specifications:
|
Item |
Specification |
|---|---|
|
Compatible Tray Type |
Steel or Aluminum Ladder Cable Tray (Tongue-and-Groove System) |
|
Function |
Change horizontal direction (e.g., navigate around corners, equipment) |
|
Common Angles |
30°, 45°, 60°, 90° (Custom angles available) |
|
Critical Dimensions |
Inside Radius (R) & Outside Radius (Determines turning radius for cables) |
|
Material/Finish |
Q235 Steel with HDG, or Aluminum Alloy (matches tray system) |
|
Connection Method |
Tongue-and-Groove + External Splice Plates & Bolts |
Typical Applications:
Industrial plants requiring rigid, high-strength cable tray runs.
Power distribution systems where directional changes must withstand mechanical stress.
Environments where quick, error-free assembly is a priority.
Design & Installation Notes:
Bend Radius: Select a bend with an inside radius (R) that meets or exceeds the minimum bend radius of the cables being installed.
Support Location: Install a support brace immediately before and after the bend to handle the lateral forces generated by the change in direction.
Cable Pulling: For long pulls through the bend, use side rollers to prevent cable jackets from scraping against the side rails.