VNA (Very Narrow Aisle) Pallet Racking Series
100% Pallet Selectivity Aisles Down to 1,600 mm Heights Up to 16 Meters Q235B / Q355B Steel
The Very Narrow Aisle (VNA) racking system adapts standard selective pallet racking into an ultra-high-density storage format by compressing operating aisles from the typical 3.2m down to 1.6m–1.8m. Serviced by high-lift turret trucks or trilateral stacker cranes, VNA maximizes cubic volume while preserving instant, direct access to every SKU.
Clear Aisle Width:1,600 mm – 1,850 mm
Maximum Frame Height:Up to 16,000 mm
Pallet Load Capacity:500 kg – 2,000 kg / level
Guidance Options:Floor Rails / Inductive Wire
Engineering Overview & Operational Advantages
As logistics real estate costs escalate globally, warehouses must optimize both vertical headroom and horizontal floor efficiency. ApexDrive Industrial Racking Co., Ltd. designs and roll-forms VNA pallet racking systems that convert wasted aisle clearance into high-capacity pallet locations. By utilizing specialized narrow aisle equipment, facilities gain up to 45% additional storage capacity over conventional wide-aisle pallet racking without compromising selectivity.
100% Immediate Selectivity
Every single pallet position remains directly accessible at all times, making VNA ideal for distribution hubs with high SKU diversity and fast stock rotation.
Maximized Floor Utilization
Aisle widths are trimmed to the exact clearance of the turret truck (typically 1.6m–1.8m), dramatically increasing the ratio of storage space to transit space.
Rigid Structural Profiles
Roll-formed from certified Q235B and Q355B coil steel with cumulative punch pitch error ≤ ±2mm, ensuring upright plumbness at heights exceeding 15 meters.
Technical Specifications & Design Parameters
All VNA racking engineered by ApexDrive Industrial Racking Co., Ltd. is manufactured under rigorous ISO 9001:2015 quality control systems and meets European CE and EN 15512 structural calculation standards.
| Material Specification | High-tensile structural carbon steel Q235B / Q355B (Baosteel / Masteel certified) |
| Upright Frame Pitch | 50 mm / 75 mm adjustable pitch for flexible beam positioning |
| Max Frame Height | Up to 16,000 mm in single roll-formed continuous profile sections |
| Beam Profiles | Box beams / Step beams with heavy-duty 3-to-5-claw welded connector brackets |
| Surface Treatment | Multi-stage pre-treatment, electrostatic epoxy-polyester powder coating cured at 180°C |
| Truck Guidance Systems | Low-profile angle steel / channel guide rails or subsurface RFID inductive wire guidance |
| Safety Accessories | Upright post protectors, row end frame barriers, back-stop pallet beams, drop stops |
| Design Compliance | EN 15512, FEM 10.2.02, RMI, CE Certified, ISO 9001:2015 |
Guidance Options & Floor Requirements
1. Mechanical Steel Guide Rails
Rugged structural angle or channel steel rails (typically 100mm x 100mm x 10mm) are anchored securely to the warehouse concrete slab along the entire aisle length. Guide rollers on the turret truck ride against these rails, allowing rapid transit down the aisle without manual steering by the operator.
2. Inductive Wire Guidance
A continuous guidance frequency wire is embedded in a narrow saw cut inside the warehouse floor slab. Sensors on the turret truck lock onto the signal, providing automated steering. Wire guidance keeps aisle floors flush and free of mechanical obstacles, facilitating floor maintenance and cross-aisle pedestrian movement.
Floor Flatness Requirements
Because VNA masts operate at elevated heights (often exceeding 12m to 15m), minute floor variations can cause significant mast oscillations at the top. ApexDrive recommends floor construction in full accordance with DIN 18202 Table 3 Line 4 or TR34 Superflat / DM2 classifications to ensure safe and efficient handling speeds.
Frequently Asked Questions (FAQ)
How does VNA pallet racking compare with standard selective racking?
VNA racking utilizes identical heavy-duty upright frames and beam connectors but reduces operating aisle widths from 3,200mm+ down to 1,600mm–1,800mm. This results in up to 45% greater storage density across the same floor footprint while preserving 100% individual pallet selectivity.
Can standard counterbalance forklifts work inside a VNA aisle?
No. Standard counterbalance and reach forklifts require a wider turning radius (2.8m to 3.5m). VNA systems require specialized equipment such as man-up turret trucks, trilateral reach trucks, or articulated narrow-aisle forklifts. Standard trucks are typically used at P&D (Pick & Deposit) stations at the aisle entrance.
What engineering information is needed for a customized VNA quotation?
Please provide warehouse layout drawings with clear ceiling heights and column grids, pallet dimensions (W x D x H) including load overhang, maximum pallet weight, and the technical specification sheet of your intended narrow-aisle forklift fleet. ApexDrive engineers will deliver a full CAD layout and static load calculation free of charge.
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