Explore our certified heavy-duty gravity roller racks, live carton storage, and high-density industrial racking configurations tailored for modern FIFO picking facilities and distribution hubs.
A rigorous examination of physics-driven gravity flow engineering, material dynamics, brake roller resistance, and space-utilization mathematics for logistics directors and procurement heads.
In high-throughput intralogistics ecosystems, roller rack systems (commonly categorized into Carton Flow Racks for split-case fulfillment and Pallet Live / Gravity Flow Racks for unit-load pallets) represent the peak of passive automation. By harnessing kinetic gravitational force, these systems transform static floor footprints into dynamic first-in, first-out (FIFO) conveying corridors. Unlike powered automated storage and retrieval systems (AS/RS) that carry steep capital expenditures, high electricity draw, and continuous software dependencies, engineered gravity roller racking delivers an uninterrupted, maintenance-lean flow channel that slashes operator transit times by up to 65% while driving storage volume density upward by 70% compared with conventional selective pallet setups.
The operational heartbeat of gravity racking lies within the gradient: typically calibrated precisely between 2.5% and 4.0% (1.5° to 2.3°). A variance of merely 0.5 degrees dictates whether unit loads halt midway (creating dangerous operator clearance interventions) or accelerate uncontrollably into the discharge stop. Guangzhou Heda Shelves utilizes multi-point laser level alignment with custom vertical column punching on 50mm and 75mm pitches to guarantee load travel consistency regardless of ambient floor deflection.
For heavy pallet live lanes extending past 3 pallet depths (often scaling to 20+ pallets in cold stores), velocity dampening is mandatory. Our systems incorporate internal magnetic and centrifugal brake rollers spaced at uniform pallet intervals. These non-powered planetary gear mechanisms resist rotational velocity exponentially: the faster a pallet moves, the higher the counter-torque applied, ensuring terminal velocities remain safely restricted below 0.3 meters per second.
Backpressure in deep-lane systems can reach crushing forces exceeding 15 kilonewtons at the discharge face. HEDA integrates heavy mechanical load separators that lock the rear pallet line behind the lead position. Once the forklift driver extracts the front pallet, the automatic release triggers sequentially, allowing only one unit forward. This completely shields warehouse operators and material handling equipment from uncontrolled kinetic surges.
| System Classification | Typical Load Rating | Roller Track Construction | Stock Rotation | Velocity Regulators | Ideal Industry Setting |
|---|---|---|---|---|---|
| Light Carton Flow (Pick Lines) | 20 – 60 kg / carton | Thermoplastic / High-density PE wheels on zinc track | Strict FIFO | Friction wheel brakes (optional) | E-commerce fulfillment, apparel, pharmaceutical picking |
| Heavy Duty Carton Live | 60 – 200 kg / tote | Galvanized continuous steel rollers with sealed bearings | Strict FIFO | Mechanical guide flanged entry | Automotive kitting lines, casting parts, hardware DCs |
| Pallet Live Roller Storage | 500 – 1,500 kg / pallet | Ø50mm - Ø60mm heavy-gauge precision welded steel tubes | Strict FIFO | Centrifugal gear-driven brake rollers | Cold storage, FMCG staging, beverage buffer warehousing |
| Push-Back Roller / Cart | 500 – 1,200 kg / pallet | Graded nested steel structural wheel carriages | LIFO | Gravity incline deceleration | Batch processing, raw material stores, medium turnover SKUs |
| Vertical Ebb & Flow Racks | 100 – 350 kg / level | Anti-corrosion engineered aluminum & polymer composite | Bi-directional | End-dampened mechanical stops | Horticulture, automated lab incubation, vertical agritech |
*All load metrics structural criteria verified against FEM 10.2.02 and EN 15512 static/dynamic loading safety factors.
How supply chain decentralization, ESG mandates, and warehouse automation hybridization are redefining how multinational enterprises specify and source roller storage infrastructure.
Founded in 2001 and headquartered in the industrial core of Guangzhou, China, Guangzhou Heda Shelves Co., Ltd. (HEDA Shelves) has evolved from an elite regional racking fabricator into one of the world's most trusted manufacturers and exporters of heavy-duty pallet racking, mezzanine floors, carton flow racks, and custom industrial storage solutions.
Operating across a modern 30,000 m² automated production facility staffed by more than 300 experienced engineers and skilled technicians, HEDA possesses an impressive in-house manufacturing throughput scaling up to 30,000 metric tonnes per month. Our engineering team utilizes advanced finite element analysis (FEA) software to model structural frame deflection, dynamic roller stress concentrations, and seismic shear resistance in accordance with European standard EN 15512 and American RMI specifications.
CE Certificate (EN 15512)
ISO 9001:2015 System
Load Bearing Inspection
RoHS Surface Test
From prime raw steel coil sourcing to automated cold bending, multi-stage chemical pretreatment, and seaworthy container packaging.
Authoritative technical answers to common queries raised by international buyers, structural inspectors, and supply chain project managers.
The optimum gradient typically ranges from 2.5% to 4.0% (approximately 1.5° to 2.3°). This is determined by four empirical parameters: pallet bottom deck quality (smooth planed timber vs raw uneven boards vs plastic skids), total unit payload (light cartons of 10kg require steeper angles than 1200kg pallets), ambient operating temperature (cold storage grease viscosity increases friction), and total lane depth. HEDA Shelves conducts physical test bed simulations on customer sample loads at our factory before finalizing beam connector hole assignments.
Yes, EUR-pallets can run reliably on our roller tracks, provided the bottom deck boards travel perpendicularly to the roller axles, or a three-track roller configuration is used to ensure unbroken contact with the bottom runners. If lower boards are broken, warped, or have protruding nails, twin-flanged entry guides, full-width steel roller barrels, or supplementary slave trays are integrated to avert lane blockage.
All HEDA storage systems are calculated using limit state structural analysis software under EN 15512 (Steel static storage systems – Adjustable pallet racking systems – Principles for structural design) and EN 15620 for clearances and tolerances. Our engineering deliverables package includes complete structural calculations, member deflection checks, baseplate anchor pull-out verification, and certified load notices (stamped with maximum bay capacities) suitable for submission to European building authorities and workplace safety inspectors.
Factory fabrication for customized roller rack projects typically requires 15 to 25 business days, backed by our monthly 30,000-tonne rolling capacity. Ocean transit from the Port of Guangzhou or Shenzhen to major European ports (such as Rotterdam, Hamburg, Antwerp, Valencia) averages 28 to 35 days, while West Coast North American ports (Los Angeles, Long Beach) require roughly 14 to 18 days. We provide complete export documentation, including Bills of Lading, Certificate of Origin, packing lists, and commercial invoices under FOB, CIF, or DDP terms.
Absolutely. HEDA's modular carton flow bed assemblies are universally adaptable. Utilizing universal drop-in beam brackets, our pre-assembled aluminum or steel roller tracks can be suspended directly across standard box beams or step beams from Dexion, SSI Schaefer, Stow, Interlake, or Mecalux profiles without drilling, cutting, or compromising the structural integrity of your existing upright frames.
Yes. Approximately 40% of our export output is manufactured under OEM/ODM partnerships for overseas racking suppliers, system integrators, and industrial distributors. We offer customized upright perforation patterns, bespoke RAL powder-coat color matching, customer-branded load capacity warning signs, custom component tagging, and neutral or branded seaworthy packaging.
Submit your warehouse architectural drawing (DWG or PDF) with load parameters. Our senior structural engineers will generate a complimentary 3D layout, load-capacity matrix, and comprehensive factory-direct quotation within 24 hours.