Overhead Crane Configurations for Warehouse Rack Manufacturing
Warehouse rack manufacturers use four crane configurations tailored to their product lines: beam-and-column racks, shelf panel racks, drive-in racks, and automated storage & retrieval systems (AS/RS). The beam-and-column roll-forming line uses an LD-type 5–10t crane with a C-hook for steel coil handling; the shelf panel line uses an LD-type 3–5t crane for plate handling; the drive-in rack assembly area uses a QD-type 10–20t crane for large component assembly; and the AS/RS installation uses a QD-type 10–20t crane for column erection. Total plant investment ranges from $22,000 to $89,000, with raw steel coils weighing 5–15t requiring large-tonnage cranes.
Beam & Column Lines: C-Hook Handling for Steel Coils
Warehouse rack beams and columns are produced through cold-roll forming, where steel coils are continuously shaped into the required cross-sections on a roll-forming line. The raw material is hot-rolled or cold-rolled steel coil, 125–500mm wide and weighing 3–10t per coil. An LD-type 5–10t overhead crane is recommended to cover the raw material yard and roll-forming line. Coil loading, unloading, and transfer use a C-hook spreader — the hook inserts horizontally into the coil's center hole (508–610mm diameter) before lifting vertically. Kelude's steel coil C-hooks have a lifting capacity of 5–10t, and the hook arm is fitted with a polyurethane liner to protect coil edges from damage. Roll-forming dies (roller sets) weigh 200–1,000kg and require crane assistance during changeovers, which typically occur once or twice daily.
The punching process for beams and columns uses CNC punching lines, with dies weighing 50–200kg that are changed with crane assistance. Kelude recommends a combination of an LD-type crane plus KBK workstation cranes in the beam-and-column workshop: the LD crane handles coils and heavy dies, while KBK units (0.5–1t) support quick die changes and changeover parts. The coil storage area in the raw material yard must have a floor rated for coil loading (≥5t/m²), and crane rail foundations should be kept clear of heavy-load zones. Crane investment for the beam-and-column area is approximately $22,000–$45,000.
Shelf Panel Lines: Flat, Stable Plate Handling
Shelf panels and deck panels are produced through shearing, bending, punching, and powder coating. The raw material is cold-rolled steel plate (0.5–2mm thick), with stacked bundles weighing 2–5t. An LD-type 3–5t crane is recommended to cover the plate storage area and each processing station. For plate handling, lifting magnets or multi-point suction cup spreaders are recommended to maintain plate flatness. During maintenance of plate shearing machines and press brakes, the upper and lower dies (weighing 100–500kg) must be lifted out. Kelude's cranes for the shelf panel area come standard with an adjustable lifting magnet spreader that can pick up 1–10 plates at a time — roughly three times more efficient than wire rope and hook.
The powder coating line requires crane assistance for loading and unloading hangers. Shelf panels move through the coating line on an overhead conveyor, with hanger and panel loading/unloading handled manually with KBK assistance. Kelude recommends installing 0.5–1t KBK workstation cranes at the loading and unloading stations of the coating line. After curing, finished shelf panels are stacked and palletized — each pallet weighing 500–2,000kg — and an LD-type 3–5t crane covers the finished goods warehouse. Crane investment for the shelf panel area is approximately $15,000–$37,000.
Drive-In Rack Assembly: Heavy Column & Beam Installation
Drive-in rack (pallet flow rack) column frames typically stand 6–15m high, 0.8–1.2m wide, and weigh 0.5–2t per frame. Tie beams and top beams range from 2–4m in length. A QD-type 10–20t double-girder bridge crane is recommended for the assembly area. During assembly, column frames must be rotated from horizontal to vertical before being lifted into position by the crane. Kelude's QD-type cranes for drive-in rack assembly come standard with two-speed hoisting (8/2m/min) and remote control operation. The assembly area is large — often the size of a warehouse — and requires high lifting heights (≥12m).
Drive-in rack rail (corbel/shelf rail) installation demands precise positioning. Kelude's QD-type cranes feature variable-frequency drives (VFD) on both the crane bridge and trolley for smooth travel and accurate positioning. The rack industry is characterized by high-mix, low-volume production — rack dimensions vary significantly between customers — so cranes must adapt to lifting column frames of different heights. Kelude uses an adjustable hoisting height limiter that lets operators preset the upper limit based on column frame height, preventing hook over-travel. Crane investment for the drive-in rack area is approximately $30,000–$74,000.
AS/RS Installation: Column Erection with Stacker Coordination
Automated storage & retrieval system (AS/RS) rack columns typically stand 12–30m high, with individual columns weighing 200–500kg. AS/RS installation requires crane support for overhead assembly of columns and beams. A QD-type 10–20t overhead crane is recommended to cover the AS/RS installation area. Stacker crane rail installation demands high accuracy (straightness ≤±2mm over the full rail length), so crane foundation work must be coordinated with the AS/RS base planning. Kelude's QD-type cranes for AS/RS construction offer a lifting height of ≥18m. After rack installation is complete, the crane can remain in place as a permanent maintenance asset — used for stacker fork repairs and motor replacement.
Cross Beam Column LD Type5-10t steel coil C-Hook | shelf panel LD Type3-5t Lifting magnet | drive-in rack QD Type10-20t Heavy Component Assembly |
Automated Storage & Retrieval System (AS/RS) QD Type10-20t High Hoisting / Lifting | Coil Lifter / Coil Hook C-Hook5-10t Polyurethane Liner | total plant investment 15-60Wanquancoverage |
Warehouse Rack Manufacturing Crane Configuration Comparison
| Product | Machine Model | tonnage | raw material | Lifting spreader | investment |
|---|---|---|---|---|---|
| Cross Beam Column | LD Type | 5-10t | steel coil3-10t | C-Hook | 15-3010,000 |
| shelf panel | LD Type | 3-5t | Steel Plate Stacking | Lifting magnet | 10-2510,000 |
| drive-in rack | QD Type | 10-20t | Column Plate/Section0.5-2t | Spreader Beam | 20-5010,000 |
| Automated Storage & Retrieval System (AS/RS) | QD Type | 10-20t | Column200-500kg | High Hoisting / Lifting≥18m | 20-5010,000 |
| complete plant | Combination | 3-20t | Multiple | Wanquancoverage | 15-6010,000 |
Kelude Heavy Industry provides crane solutions for the warehouse rack manufacturing sector, covering the full spectrum of applications—from cross beam and column roll forming lines to shelf panel production lines, drive-in rack assembly, and automated storage and retrieval system (AS/RS) installation. Whether it's lifting and transporting steel coils with C-Hooks, handling sheet metal with electromagnetic suction cups, installing large-tonnage column assemblies, or erecting ultra-tall columns for high-bay warehouses, Kelude has proven solutions in place.
steel coil Lifting and transport Specialty C-Hook5-15t+polyurethane liner+remote control, Cross Beam Column Plantraw material Lifting and transportstandard configuration | High-Efficiency Plate Handling Lifting and transport Lifting magnet Adjustable Magnetic Force+1-10Sheet-by-Sheet Stack Pickup, Shelf Panel Production Lifting and transportefficiency improvement3Times | large tonnageinstallation QD Type10-20t+High Hoisting / Lifting≥18m, drive-in rackand AS/RSinstallation Customized Solution |
Frequently Asked Questions (FAQ)
Q: What lifting spreader is recommended for steel coil handling in racking plants?
A: A C-Hook is the recommended choice. With coil inner diameters ranging from 508 to 610 mm, the C-Hook's jib length should be at least 500 mm. The hook arm is fitted with a polyurethane liner (10–15 mm thick) to protect the coil edges. Kelude Heavy Industry offers C-Hooks for steel coils with capacities from 5 to 15 t, and the jib length can be customized to suit different coil widths.
Q: Are lifting magnets safe for handling steel plates in shelving production?
A: Yes. Kelude Heavy Industry lifting magnets feature power-off magnetism holding—in the event of a sudden power failure, the magnet retains its grip for over 15 minutes, providing ample time to safely lower the steel plate. The magnetic force is adjustable (20–100%), allowing low-force settings for thin plates to prevent deformation.
Q: Why is a QD double-girder crane recommended for drive-in rack assembly areas?
A: Rack column heights range from 6 to 15 m, and LD-type cranes have a limited lifting height (typically ≤12 m). QD double-girder cranes offer a lifting height of up to 24 m, easily handling the hoisting of 15 m columns. Additionally, QD-type cranes provide smoother operation, making them ideal for lifting large-tonnage, long-sized loads.
Q: What lifting height is required for cranes used in automated warehouse construction?
A: The lifting height must be at least the warehouse column top height plus 3 m. For example, a warehouse with 20 m columns requires a crane with a lifting height of at least 23 m. Kelude Heavy Industry's standard QD-type cranes achieve a lifting height of 24 m, with custom configurations reaching 30 m. For lifting heights above 18 m, a wire rope anti-twist device must be retrofitted.
