Overview
Through pallet racking, also known as drive-in racking, is a specialized storage system designed for high-density warehousing. It allows forklifts to drive directly into the rack structure to place or retrieve pallets, eliminating aisles between rows. This system is particularly suited for homogeneous products with high turnover rates, such as beverages, packaged foods, or automotive parts. The design supports FIFO (First In, First Out) inventory management, making it ideal for perishable goods or time-sensitive materials. Unlike selective racking, through pallet racking sacrifices some accessibility for space efficiency, typically achieving 60–75% more storage density.
Structure and Working Principle
The system consists of vertical frames connected by horizontal rails, forming channels where pallets are stored in depth (typically 2–7 pallets deep). Forklifts enter these channels to load or unload goods from the front. The rails are slightly inclined (1–3°) to facilitate gravity-assisted movement in some variants. Load-bearing capacity ranges from 1,000 to 5,000 kg per pallet position, depending on steel gauge and structural design. Reinforced uprights and diagonal bracing ensure stability during forklift operations. Optional guide rails or wheel tracks improve alignment for narrow-aisle forklifts.
Key Features
Through pallet racking excels in space utilization, often reducing aisle requirements by 50% compared to selective racking. The system's modular design allows customization for varying pallet sizes (commonly 800×1200 mm or 1000×1200 mm) and building heights (up to 15+ meters). Safety features include column protectors to prevent forklift collisions and optional wire mesh decks for small-item containment. Unlike push-back racking, it requires no complex mechanical components, minimizing maintenance needs. However, it demands precise warehouse layout planning to optimize traffic flow and loading/unloading efficiency.
Application Areas
This racking system dominates cold storage facilities (e.g., frozen food warehouses) where space premiums are high and product rotation is predictable. Beverage distributors favor it for uniform bottle/can pallets, while automotive manufacturers use it for bulky component storage. In e-commerce fulfillment centers, it's increasingly paired with semi-automated forklifts for medium-speed SKU retrieval. The food industry prefers it for non-perishable dry goods like flour or canned products. Notably, it's less suitable for multi-SKU environments requiring frequent individual pallet access.
Maintenance and Precautions
Regular inspections should check for bent beams, loose bolts, or concrete floor damage near upright bases. Annual professional assessments are recommended for racks exceeding 6 meters in height. Load signs must clearly display maximum capacity per level. Operational precautions include enforcing speed limits for forklifts (typically <8 km/h) and using aisle-end barriers. Pallets should never protrude beyond rails, and loads must be evenly distributed. In seismic zones, additional diagonal bracing or base anchoring may be required to meet local safety standards.
B2B Procurement Guide
When sourcing through pallet racking, verify suppliers' compliance with international standards like EN 15620 (Europe) or RMI/ANSI MH16.1 (North America). Lead times range from 4–8 weeks for custom configurations. Consider total cost of ownership: premium galvanized steel lasts 2–3× longer than painted versions in humid environments. Key negotiation points include beam level adjustments (manual vs. boltless) and compatibility with existing forklift fleets. Many manufacturers offer free warehouse layout simulations. For large projects (1,000+ pallet positions), modular expansion provisions should be contractually specified.
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