There is a threshold in sheet metal storage where manual methods stop working. Below 1,000 kg per drawer, a well-designed crank mechanism can handle the load. Above 3,000 kg, the physics of friction and leverage turn retrieval into a two-person operation with safety implications. At 5,000 kg, the only practical approach is motorized assistance.
Herochu’s heavy duty electric sheet metal rack is engineered for this upper range. The HC-B4020-65 and HC-B6020-65 models carry 5,000 kg per tier, accommodating the heavy plate formats—4000×2000mm and 6000×2000mm—that define structural fabrication and heavy equipment manufacturing.
The Engineering Challenge of 5-Ton Drawers
A drawer carrying 5,000 kg of steel presents a structural problem that begins at the frame and extends through every component in the load path. When the drawer is fully extended, the weight transfers from the drawer base through the roller system to the crossbeams, then through the columns to the floor. If any link in that chain deflects, the drawer binds, the sheet shifts, and the operator faces a safety hazard.
Herochu addresses this with a dual-beam crossbeam design and thickened Q235B columns. The dual-beam configuration places two structural members under each drawer, distributing the load across a wider base and reducing the bending moment on any single beam. The Q235B steel specification provides the strength and weldability required for this application, and the powder coating protects against the corrosion that would otherwise compromise the structure over years of service.
The frame is rated for a total load of 30,000 kg, providing a safety margin that accommodates the full complement of loaded drawers without approaching the yield point of the steel.
Motorized Drawer Storage: Safety and Efficiency at Scale
Manual retrieval of a 5-ton drawer is not merely difficult—it is unsafe. The force required exceeds what a single operator can generate, and the consequences of a drawer binding or slipping during manual operation are severe. Herochu’s motorized drawer storage eliminates this risk by moving the load with controlled mechanical power.
The drive system operates at a vertical lifting speed of 9 m/min, delivering the drawer to the access position in seconds. The operator controls the movement from a pendant or wireless remote, standing clear of the rack during travel. Limit switches stop the drawer precisely at full extension, and the locking mechanism engages to secure the tray while the crane or vacuum lifter removes the sheet.
The efficiency gain is substantial. A retrieval that might require two operators, a forklift, and ten minutes of positioning with a floor stack becomes a one-person, two-minute operation. For facilities running multiple shifts, the labor savings alone justify the investment.
Automated Drawer Sheet Metal Storage Rack for 3000x1500mm Sheets
While the 5-ton models serve the heavy plate market, the 3000×1500mm format remains the most common sheet dimension in general fabrication. The HC-B3015-63 model provides the same motorized drawer technology and structural integrity in a configuration optimized for this size.
With 3,000 kg per tier and six standard layers, the HC-B3015-63 supports the steel and aluminum sheet inventories typical of laser cutting shops, HVAC fabrication, and general metalworking. The automated drawer function reduces the physical demand on operators and supports the single-piece flow that modern production scheduling requires.
The drawer dimensions are matched to the 3000×1500mm footprint, and the clear space is set at 120 mm as standard. For shops storing thicker plate or bundle quantities, the clear space can be increased at order.
Crank-Out Steel Plate Drawer Rack for 3m x 1.5m Sheet
Not every 3m x 1.5m sheet application requires motorization. The Herochu crank-out steel plate drawer rack provides a manual alternative that retains the structural benefits of the heavy-duty frame while reducing the initial investment and electrical infrastructure requirements.
The crank mechanism is engineered for ergonomic operation, reducing the effort to approximately 20 percent of a direct pull. For 3-ton loads, this remains within the capability of a single operator. The crank-out version suits facilities with lower retrieval frequency, where the time savings of motorization do not justify the additional cost, or where the rack is positioned in a location without convenient power access.
Both the motorized and crank-out versions share the same drawer geometry, safety features, and material protection design. The choice is operational, not structural.
Material Protection for Heavy Plate
Heavy plate is susceptible to the same surface damage mechanisms as thinner sheet, and the consequences are more expensive because the material cost is higher. A scratched 4000×2000mm steel plate may require rework or replacement that costs hundreds of dollars, far exceeding the incremental cost of proper storage.
Herochu drawers keep each plate isolated on its own support surface. The inclined plastic supports hold the plate in position during drawer travel without applying damaging pressure. The 100 percent extension allows the crane to lift the plate vertically, without dragging it across adjacent surfaces.
For aluminum plate, the non-contact storage prevents the galling and scratching that occur when aluminum slides against steel or against other aluminum surfaces.
Space Optimization and Workflow Integration
The 5-ton models store plate formats that would otherwise consume significant floor area. A 6000×2000mm sheet occupies 12 square meters on the floor; a stack of ten such sheets, with the necessary access clearance, consumes 20 square meters or more. The Herochu HC-B6020-65 with six layers stores that same quantity within a footprint of approximately 6.5 by 2.3 meters, and the vertical orientation eliminates the aisle space required for forklift access to floor stacks.
The drawer system supports FIFO inventory rotation, which is particularly important for plate where older stock may be at risk of rust or specification obsolescence. The labeling capability allows clear identification of alloy, thickness, heat number, and receipt date.
The rack integrates with overhead cranes equipped with magnetic or vacuum lifting systems, and the motorized drawer operation aligns with the material flow requirements of automated cutting and profiling equipment.
Certifications and Quality Assurance
Herochu racks are CE and ISO9001 certified. Each unit undergoes rigorous load testing before shipment, verifying the structural integrity of the frame and the performance of the drawer mechanism under rated load. The quality control process covers raw material inspection, dimensional verification of fabricated components, and functional testing of the completed assembly.
For international customers, the certification documentation supports import compliance and provides assurance of the product’s conformity to recognized standards.
Conclusion
The Herochu heavy duty electric sheet metal rack with 5-ton drawer capacity addresses the storage requirements of heavy plate fabrication. The motorized drawer storage system provides safe, efficient retrieval of loads that manual methods cannot handle, while the Q235B dual-beam structure ensures the rack maintains its geometry under continuous industrial use. For facilities storing 4000×2000mm or 6000×2000mm plate, the HC-B4020-65 and HC-B6020-65 models deliver the capacity, protection, and operational efficiency that heavy plate demands.
