100% extension roll out cantilever rack?

Why “100% Extension” is the Critical Spec for Tube & Pipe Storage

When we discuss the Teleskop-Kragarmregal, the “100% extension” feature is often misunderstood as merely a convenience. However, for facilities handling 20-foot or 40-foot lengths of structural steel, polished aluminum, or hygienic stainless steel, this specification is the difference between a safe operation and a hazardous one.

If a rack drawer only extends 70% or 80%, the rear portion of your material remains covered by the upper levels. This prevents the use of an overhead crane for a vertical lift. You are forced to drag the material out at an angle or use a forklift to pry it loose. For sensitive materials like electropolished tubes used in the pharmaceutical or dairy industries (ASME BPE standards), any metal-on-metal friction during retrieval destroys the surface finish (Ra), rendering the product unsellable.

The Mechanics of the “Crank-Out” System

Unlike static cantilever racks that require wide aisles for forklift maneuvering, the Der kurbel ragte in das auslegerregal system transforms your storage into a high-density, dynamic machine. The core mechanism involves a heavy-duty rack and pinion gear system housed within the I-beam or rectangular tube uprights.

By rotating the ergonomic handle, a single operator can move a cantilever arm loaded with up to 6,600 lbs (3,000 kg) of steel bar stock. The gear reduction ratio allows for smooth movement with minimal physical effort. Once the arm is fully extended into the aisle, the material is completely exposed from above. This allows your shop’s overhead crane or vacuum lifter to pick up the entire bundle securely, bypassing the need for forklifts in narrow aisles entirely.

Eliminating the “Digging” Process in Metal Fabrication

In a typical fabrication shop scenario, if you need a specific square tube located on the bottom level of a static rack, a forklift driver must first remove the top three levels, place them on the floor (cluttering the workspace), retrieve the target bundle, and then restack the other materials. This process, known as “digging,” takes 15-20 minutes per pick and drastically increases the risk of accidents.

With a roll-out system, every level is an active picking face. You simply identify the level, crank it out, and lift. Retrieval time drops from 20 minutes to under 2 minutes. For High-Mix, Low-Volume (HMLV) manufacturers, this efficiency gain directly impacts the bottom line.

Safety and Space Optimization

Space is a premium asset in any manufacturing plant. Standard cantilever racking requires aisles ranging from 12 to 18 feet wide to accommodate the turning radius of a heavy-duty forklift carrying long loads. Because the Tcrack system utilizes the overhead crane for transport, the aisle width can be reduced to just what is needed for the operator to walk and the drawer to extend—often cutting the required footprint by 50%.

Furthermore, safety features like the integrated stop blocks prevent the drawers from over-extending or derailing. The structure is anchored to the floor using heavy-duty expansion bolts, ensuring stability even when fully loaded drawers are extended. This design complies with strict safety standards, protecting both your workforce and your inventory.

Conclusion: The Standard for High-Value Metal Logistics

If your facility handles commodity-grade rebar, a static rack might suffice. But for Steel Service Centers and manufacturers dealing with high-value assets like hygienic stainless steel, precision-ground bars, or aerospace-grade aluminum profiles, the Teleskop-Kragarmregal is the industry standard for damage-free handling. It converts your storage from a passive holding area into a dynamic part of your production workflow.

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Häufig gestellte Fragen

Q1: Can this rack handle 40-foot (12-meter) long tube bundles without sagging? Yes. Our system is modular. For 40-foot lengths, we configure the rack with 6 to 8 upright columns connected by transmission shafts. This ensures the entire length cranks out synchronously, providing uniform support to prevent material deflection or sagging.

Q2: What is the maximum load capacity per arm? The Tcrack system is engineered for heavy industrial use. Depending on the configuration, a single arm can support up to 6,600 lbs (3,000 kg), allowing for a total level capacity exceeding 20,000 lbs across multiple arms.

Q3: How do you prevent damage to polished stainless steel surfaces? We offer optional protective linings for the cantilever arms, such as UHMW plastic or rubber strips. Combined with the 100% extension for vertical crane lifting, this eliminates the sliding friction that causes scratches on sanitary tubes.

Q4: Can I use this system if I don’t have an overhead crane? While the system is optimized for overhead cranes to maximize efficiency and space, it is still compatible with forklifts. The extended drawer allows a forklift to pick the load from above (using straps) or from the side without needing to reach inside the rack structure.

Q5: Is the cranking mechanism manual or electric? We offer both. The manual crank uses a high-ratio gear system that allows a single operator to move tons of material with one hand. For ultra-heavy applications or high-frequency automated lines, electric motor-driven options with remote control are available.