Essential for Vertical Transitions: The Secure 90-Degree Turn
The Vertical Outside 90 Cable Tray is a precision-engineered fitting designed to facilitate a secure, smooth, and code-compliant 90-degree vertical turn in cable tray runs. It enables cables to transition efficiently between horizontal and vertical planes (or between vertical risers) while protecting cable integrity, maintaining proper bend radius, and ensuring a continuous support path. Fabricated from high-quality hot-dip galvanized steel, stainless steel, or aluminum, it provides robust mechanical strength and seamless integration with straight ladder or trough tray sections. This component is critical for riser shafts, mezzanine levels, equipment racks, and any installation requiring a change in elevation with a defined right-angle turn.
The Cornerstone of Organized Vertical Cable Routing
The Vertical Outside 90 (or Vertical Rise Elbow) is a fundamental component in a complete cable tray system, solving the challenge of guiding cables up walls, down into equipment pits, or around structural obstructions at a perfect right angle. Its "outside" designation refers to the radius of the turn being on the external side of the bend, creating a sweeping, gradual arc that prevents cables from being bent too sharply against an inside corner—a common cause of cable damage and signal degradation.
Core Advantages:
Protects Cable Integrity: The large, radiused design ensures all cables, especially fiber optics and large power cables, exceed their minimum bend radius, preventing performance loss or physical damage.
Ensures Continuous Support: Provides a smooth, uninterrupted pathway, preventing cables from sagging or being pinched at sharp corners, which simplifies cable pulling and reduces stress.
Saves Space & Enhances Neatness: Enables a compact, organized, and professional-looking vertical transition compared to makeshift field solutions, maximizing space utilization in tight risers.
Engineered for Strength: Manufactured to match the load rating and material of the adjoining straight trays, ensuring structural continuity and support under full load.
Simplifies Installation: Pre-fabricated to standard or custom angles, eliminating complex on-site fabrication, saving labor time and ensuring consistency.
Key Design & Types:
Swept Elbow Design: Features a smooth, constant-radius curve (e.g., radius equal to tray width) for optimal cable protection.
Materials & Finishes: Available in Hot-Dip Galvanized Steel (standard for corrosion resistance), Stainless Steel (304/316 for harsh environments), and Aluminum (lightweight, corrosion-resistant).
Compatibility: Precisely engineered to connect seamlessly with standard ladder-type and ventilated trough cable trays of corresponding width, depth, and side rail height.
Typical Applications:
Telecommunications & Data Center Riser Shafts
Industrial Plants: Routing cables from overhead trays down to machinery.
Power Distribution Rooms: Transitioning between switchgear levels.
Water/Wastewater Facilities: Managing cable runs along walls and structures.
Commercial High-Rises: Vertical backbone distribution.
| Item | Specification Details |
|---|---|
| Type | Vertical Outside 90° Elbow (Vertical Rise Elbow). Also available as Vertical Inside 90° for turns where the radius is on the inner side. |
| Standard Material | Hot-Dip Galvanized Steel (HDG) per ASTM A123. Stainless Steel (SS 304/316) and Aluminum Alloy (6061/6063) are common alternatives. |
| Compatible Tray Types | Ladder Type (Most Common), Ventilated Trough. Must match the side rail height and rung/rail configuration of the straight tray. |
| Standard Bend Radius | Typically equal to the width of the cable tray (e.g., a 300mm wide tray has a 300mm radius elbow). Long-radius (2x width) options are available for sensitive cables. |
| Common Widths (W) | 100mm, 150mm, 200mm, 300mm, 450mm, 600mm, 900mm (Matching standard straight tray widths). |
| Common Side Rail Heights (H) | 50mm, 75mm, 100mm, 150mm. |
| Construction | Formed from continuous side rails and radiused rungs/bottom for consistency. Corners are welded for maximum strength. |
| Connection Method | Uses standard splice plates and bolts (provided) to connect to straight tray sections on both the horizontal and vertical legs. |
| Finishes | HDG: Standard spangle finish. SS: Mill finish or brushed. Aluminum: Mill finish, anodized, or powder-coated. |
| Load Rating | Matches the load class (Light, Medium, Heavy) of the corresponding straight tray system. Engineered to support the same distributed load. |
| Compliance Standards | Designed to integrate with systems compliant with NEMA VE 1, IEC 61537, BS EN 61537. |
| Accessories | May be supplied with cable retaining clips or radius guards for additional cable security around the bend. |
| Packaging | Typically shipped nestable or bundled to minimize shipping volume. |





