Industriele kwaliteit crank stapelaar met borgpennen

The Hidden Cost of Storing High-Purity Stainless Steel

In the hygienic component manufacturing sector—whether you are producing ASME BPE compliant fittings, pharmaceutical valves, or food-grade pumps—the integrity of your raw material is non-negotiable. You aren’t just storing “metal”; you are storing surface finish. A single scratch from a forklift tine on a polished 20ft stainless steel tube can render the entire length scrap, destroying the Ra value required for sanitary applications.

Traditional static cantilevers force your operators into a dangerous dance. To access a specific heat number or diameter buried at the bottom of a stack, they must move the top layers. This “double handling” not only wastes 15-20 minutes per pick but drastically increases the risk of denting, scratching, or bending the tubing. The Draagarmstelling changes this dynamic entirely by treating your heavy bundles like precision instruments in a drawer.

Engineering Logic: The Crank-Out Mechanism & Locking Pins

The core differentiator of this industrial-grade system is the extendable arm mechanism. Unlike static racks where you must aim a forklift into a dark, narrow slot, our telescoopgiek allows the entire storage level to extend 100% into the aisle. This is achieved through a heavy-duty gear and rack transmission system, allowing a single operator to move loads of up to 6,600 lbs (3,000 kg) per level with minimal physical effort.

The Critical Role of Locking Pins

Safety in a heavy metal fabrication shop is paramount. This system features integrated locking pins mechanism. These pins serve two vital functions:

1. Transport Security: They lock the extendable arms firmly in place when the rack is not in use, preventing accidental roll-out due to vibration or floor unevenness.
2. Loading Stability: When the drawer is fully extended for loading, the pins engage to ensure the arm does not retract unexpectedly while the crane is lowering the load.

Overhead Crane Access: Preserving Surface Quality

The most significant advantage for the stainless steel industry is the ability to switch from forklifts to overhead crane accessible racking. By extending the drawer completely, you can use nylon slings or vacuum lifters to pick up tubes and bars from directly above.

This “vertical lift” method eliminates the friction and impact associated with sliding forks under a bundle. For high-purity tubes intended for heat exchangers or sanitary loops, this means zero surface contact with hard steel, preserving the polishing and electropolishing work you paid for. It allows you to store mixed inventory—hex bars next to round tubes—without the risk of the pile collapsing during retrieval.

Technische specificaties

Designed for the rigors of a Steel Service Center or heavy manufacturing plant, the roll-out cantilever system is built to withstand daily industrial abuse.

Functie	Specification (Industrial Grade)
Load Capacity Per Arm	Up to 1,500 lbs – 3,300 lbs (Customizable)
Total Level Capacity	Up to 11,000 lbs (5,000 kg) per drawer
Extension	100% Full Extension (Crank or Electric)
materiaalcompatibiliteit	20ft – 24ft Tube, Bar Stock, Extrusions
Standard Finish	High-Durability Powder Coating (Blue/Orange standard)
Operation Mode	Manual Crank (Mechanical Advantage) or Electric Motor

Maximize Your “Cube” Utilization

In many fabrication shops, floor space is the limiting factor for growth. Traditional racks require wide aisles (12ft+) for forklifts to maneuver long loads. By utilizing our telescopisch draagrek, you can narrow your aisles significantly. Since the loading is done from above via crane, the aisle only needs to be wide enough for the operator to walk and the drawer to extend. This allows you to condense your footprint, potentially fitting 50% more inventory in the same square footage, or freeing up space for new CNC machining centers or laser cutters.

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Frequently Asked Questions (Stainless Steel & Tube Storage)

Q1: Can we add protective lining to the arms to prevent carbon contamination on stainless steel?
Yes. We offer optional UHMW (Ultra High Molecular Weight Polyethylene) or rubber lining on the cantilever arms. This is highly recommended for storing 304/316L stainless steel to prevent iron contamination and scratches that could ruin the sanitary finish.

Q2: Our tubes come in 20-foot random lengths. How do we prevent sagging?
Sagging is a major concern for precision tubing. We customize the number of columns and the spacing between arms based on the flexibility of your material. For 20ft flexible tubing, we typically recommend a 4 or 5-column configuration to ensure adequate support points and maintain straightness.

Q3: Is the crank mechanism difficult to operate when the rack is fully loaded with 6,000 lbs of steel?
Not at all. The system uses a high-ratio gear reduction box. A single operator can crank out a fully loaded drawer with minimal effort (typically less than 30 lbs of force required on the handle). It is designed for ergonomics and ease of use.

Q4: Can this rack handle the vibration from nearby heavy stamping or cutting machinery?
Yes. The racks are anchored to the concrete slab using heavy-duty expansion bolts. Furthermore, the locking pin mechanism ensures that drawers do not drift or vibrate open, even in active manufacturing environments with heavy machinery nearby.

Q5: We use a vacuum lifter for our sheet and tube. Is there enough clearance?
Absolutely. The vertical spacing between levels is adjustable. When we design your solution, we calculate the height of your vacuum lifter or spreader beam to ensure there is ample clearance for the crane operator to maneuver without hitting the rack structure.