Engineered Cantilever Arms for Heavy MEP & Pipe Run Loading
Lonsonstrut pre-engineered cantilever arms provide high-stability wall, column, and vertical channel mounting for cable trays, HVAC ductwork, and multi-tier piping. Manufactured in standard 41×21, 41×41, and 41×82 profiles with precision robotic welded base plates in high-strength carbon steel and proprietary structural aluminum alloy.
Cantilever Arm Configurations
Choose the exact configuration required for your project’s load class, spatial limits, and mechanical attachment method.
Standard Cantilever Arms
Solid back/solid channel cantilever arms designed for maximum torsional rigidity and static loads where channel nuts secure directly into the continuous top slot.
- Profile: 41×41mm or 41×21mm
- Lengths: 150mm to 750mm
- Ideal for: Single Pipe & Duct Mounting
Slotted Cantilever Arms
Features pre-punched continuous back slots for flexible through-bolt fastening, drop-rod anchors, and secondary electrical / plumbing accessory attachments.
- Slots: 14×28mm continuous pitch
- Lengths: 150mm to 1000mm
- Ideal for: Multi-service cable raceways
Double Channel Arms
Back-to-back (41×82mm) channel welded assembly delivering exceptionally high bending moment resistance for heavy mechanical lines and high-span loads.
- Profile: 41×82mm Back-to-Back
- Welded: Continuous seam/stitch
- Ideal for: Chilled water & heavy pipe
Heavy Duty Cantilever Arms
Reinforced with an extended triangular diagonal gusset bracket and oversized base plate for severe seismic, dynamic industrial vibration, and extreme point loads.
- Gusset: 8mm-10mm reinforced brace
- Base: 4-hole heavy mounting plate
- Ideal for: Infrastructure & Utility Tunnels
Why Structural Engineers Specify Lonsonstrut Brackets
Wall cantilever arms bear critical shear and bending loads over decades. We eliminate failure points through robotic certified welding, precise base-plate perpendicularity, and high-strength alloy metallurgical control.
Robotic Seam Welding Quality
Continuous deep penetration welds between channel profile and baseplate eliminate porosity and stress concentrations.
Proprietary High-Strength Aluminum
Available in aerospace-grade aluminum alloy with tensile strength up to 728 MPa at 1/3 the weight of structural steel.
Anti-Corrosion & Non-Ferromagnetic Options
Hot-dip galvanized (EN ISO 1461, ≥65µm) or aluminum alloy for eddy-current elimination near high-voltage busways.
Engineered Anchor Slots
Standard 14×28mm or 14×30mm slotted mounting holes allow rapid alignment with mechanical concrete anchors, threaded rods, or channel nuts on vertical building columns.
Dynamic Fatigue Tested
Resistant to cyclic loads, equipment harmonics, and thermal expansion fatigue commonly occurring in industrial plant rooms and transit tunnels.
Universal 41mm Fit
Interchangeable with global standard 41mm strut channels, pipe clamps, cushion clamps, cable cleats, and channel spring nuts across standard B2B inventories.
Custom Stamping & Lengths
Custom arm lengths from 100mm up to 1500mm, bespoke 3-hole/4-hole base plates, pre-welded end caps, and custom branding for international wholesalers.
Standard Cantilever Arm Load Ratings
| Part Code | Channel Profile | Arm Length (L) | Base Plate Size | Max Uniform Load (UDL) | Standard Surface Finish |
|---|---|---|---|---|---|
| LS-CA-4121-300 | 41 × 21 × 2.0mm (Single) | 300 mm | 120 × 45 × 6 mm (2 Holes) | 2.15 kN | Hot-Dip Galvanized / Electro-ZP |
| LS-CA-4141-300 | 41 × 41 × 2.5mm (Single) | 300 mm | 130 × 50 × 8 mm (2 Holes) | 4.20 kN | HDG / Anodized Aluminum |
| LS-CA-4141-450 | 41 × 41 × 2.5mm (Single) | 450 mm | 130 × 50 × 8 mm (2 Holes) | 2.80 kN | HDG / High-Strength Alloy |
| LS-CA-4141-600 | 41 × 41 × 2.5mm (Single) | 600 mm | 130 × 50 × 8 mm (2 Holes) | 2.10 kN | HDG / Anodized Aluminum |
| LS-CA-4182-600 (Double) | 41 × 82 × 2.5mm (Double Back-to-Back) | 600 mm | 170 × 50 × 10 mm (3 Holes) | 5.65 kN | HDG (EN ISO 1461) |
| LS-CA-4182-900 (Double) | 41 × 82 × 2.5mm (Double Back-to-Back) | 900 mm | 170 × 50 × 10 mm (3 Holes) | 3.75 kN | HDG (EN ISO 1461) |
| LS-CA-HD-750 (Gusseted) | 41 × 41mm + Triangular Gusset | 750 mm | 200 × 50 × 10 mm (4 Holes) | 7.10 kN | Heavy HDG / Structural Alloy |
| LS-CA-HD-1000 (Gusseted) | 41 × 82mm + Triangular Gusset | 1000 mm | 240 × 60 × 12 mm (4 Holes) | 8.20 kN | Heavy HDG / Structural Alloy |
* Values listed are uniform design working loads calculated with safety coefficient. Contact technical engineering for dynamic point loads.
Custom drill patterns and OEM stamping available upon requestProject-Proven Across Critical Infrastructure
From underground utility tunnels to hyperscale data center containment, Lonsonstrut cantilever arms ensure structural safety and rapid installation.
Data Center Cable Containment
Cantilever wall & rack brackets support heavy high-density fiber and power cable trays with zero deflection, facilitating multi-tiered overhead cable management.
Utility Tunnels & High Voltage
Non-ferromagnetic high-strength aluminum cantilever arms prevent eddy-current overheating in 220kV municipal power underground corridors.
Industrial Piping & HVAC Runs
Supports heavy chilled water lines, steam distribution pipes, and ventilation conduits mounted directly onto concrete walls or structural steel beams.
Request a Cantilever Arm Quotation & Submittal
Direct factory pricing, custom load engineering, CAD submittals, and material compliance certificates for MEP contractors, distributors, and infrastructure projects worldwide.