OEM/ODM Roller Racking Systems Manufacturers & Exporters

The standard incline angle for gravity pallet flow racking ranges between 2.5% and 3.5% (approximately 1.4° to 2.0° of slope). Determining the exact gradient requires calculating three core variables:

• Pallet Quality and Bottom Surface: Smooth three-runner wooden pallets travel easily, requiring a gentler 2.5% slope. Perimeter-base pallets or composite plastic pallets with grid patterns have different friction coefficients and often require 3.0% to 3.5% incline.
• Gross Pallet Weight: We design systems to handle varying loads across the same lane (e.g., 400 kg to 1,200 kg). A 3% slope combined with centrifugal brake rollers ensures that light pallets overcome static friction while heavy pallets are safely governed.
• Roller Pitch Spacing: Standard engineering rules dictate that a minimum of three to four rollers must be in continuous contact with the pallet runner at all times to prevent sag and high point deflection. For standard 1200mm deep pallets, roller center-to-center pitch is typically set between 150mm and 200mm.

Two distinct safety devices prevent pallet impact and structural damage:

• Centrifugal & Magnetic Brake Rollers: Integrated at periodic intervals (typically one brake roller per pallet position along the flow lane), these units create dynamic resistance that limits pallet rolling speed to a maximum safe velocity of 0.25 to 0.3 m/s.
• End-of-Lane Pallet Separator / Latch Stop: Located behind the front-most pallet at the pick face, this mechanical foot-activated or spring-loaded lever physically locks the subsequent pallets in the lane approximately 300mm to 450mm back. When the forklift lifts the first pallet, the back-pressure is zero. Once the pallet clears the bay, the separator automatically trips to advance the queue safely forward by one position.

Yes. Over 25% of our gravity roller systems are exported for cold chain warehouses, meat processing abattoirs, and pharmaceutical chillers operating between -25°C and -30°C. For sub-zero operations, we implement specific material adaptations:

• Steel components are specified with Charpy V-notch impact toughness certified to resist cold-temperature embrittlement.
• All internal roller bearings utilize low-temperature synthetic non-freezing greases that maintain kinematic fluidity without congealing.
• Roller tracks and frames receive either high-micron hot-dip galvanization (minimum 65μm thickness) or specialized exterior-grade thermoset polyester powder coatings to guard against condensation-induced oxidation during defrost cycles.

Guangzhou Heda Shelves designs and tests all racking systems in rigorous alignment with cold-formed steel structural design codes:

• Engineering Calculations: We supply full structural section properties (moment of inertia, section modulus, effective yield stress) and finite element analysis (FEA) models showing axial compression and beam deflection within allowable limits (deflection limit ≤ L/200).
• Seismic Engineering: For earthquake-prone regions such as New Zealand, the Pacific Rim, and the Americas, our engineers adjust baseplate thickness (12mm–20mm), utilize heavy chemical anchoring bolts, and double the cross-aisle and down-aisle bracing sets to satisfy NZS 1170.5 dynamic seismic load coefficients.
• Independent Verification: We provide full engineering data sheets so your local registered structural engineer can verify and issue site-specific producer statements (e.g., PS1 in New Zealand) for building code compliance.

To deliver an accurate 3D CAD layout, load capacity calculation, and formal quotation within 24–48 hours, our engineering office requires:

• Warehouse Architectural Drawing: Floor plan indicating building length, width, column grid positions, dock door locations, and clear height to the lowest overhead obstruction (sprinklers or lighting fixtures).
• Pallet & Unit Load Profile: Pallet dimension (Length × Width × Height including cargo), entry direction, bottom runner configuration (e.g., three-stringer, perimeter base), minimum weight, and maximum weight.
• Operational Parameters: Desired number of pallet lanes, lane depth (how many pallets deep), daily throughput turnover speed (FIFO requirement), and forklift truck mast height and turning radius.

Our typical manufacturing cycle is 15 to 25 business days depending on project scale and surface finish. Ocean freight transit from Guangzhou/Shenzhen ports ranges from 12–18 days to Australia/NZ and 20–30 days to European or American base ports.

Regarding biosecurity: All uprights, beams, and roller bed assemblies are packed into custom welded steel logistics cradles. We avoid solid raw timber dunnage to eliminate risks under Australian DAFF and NZ MPI biosecurity border inspections. Where timber blocks are required, they are heat-treated, certified, and clearly stamped to ISPM-15 international phytosanitary standards.