Gradin manufactures 4-post Vertical Reciprocating Conveyors (VRCs) configured for C-type material flow (same-side infeed and outfeed). The four-mast structural frame supports larger platform dimensions and prevents carriage deflection under heavy or off-center payloads. Every unit is engineered to order. We dimension the support columns, carriage, and integrated conveyor decks based strictly on your existing automated lines and target load specifications.
| Category | Specification | Technical Data / Range |
| Capacity & Dimensions | Max. SWL (Safe Working Load) | Fully customizable to specific payload requirements |
| Max. Travel Height | Engineered to match required floor levels | |
| Platform Dimensions (L×W) | Dimensioned to existing pallet or cargo footprint | |
| Infeed/Outfeed Layout | C-shape (Same side loading & unloading) | |
| Performance & Drive | Lifting Speed | Variable speed customizable via VFD |
| Carriage Deck Type | Powered roller / Gravity roller / Flat steel deck | |
| Drive Mechanism | Top-mounted gear motor with heavy-duty chain drive | |
| Electrical & Control | Main Power Supply | 3-Phase, 380V/400V/480V, 50/60Hz |
| Control Voltage | 24V DC | |
| Automation Integration | PLC-based, WMS/WCS handshake signal ready | |
| Safety & Enclosure | Core Safety Devices | Anti-fall blocks, slack-chain sensors, limit switches |
| Enclosure | Built to site specifications (Mesh or solid panels) |
4-Post Structural Frame: The carriage is guided by four steel masts. This limits mechanical wear and maintains platform levelness when lifting high-capacity industrial freight.
C-Type Routing: Configured for same-side loading and unloading. This layout matches specific facility floor plans where cross-flow (Z-type) access is physically restricted.
Integrated Conveyor Deck: The lifting carriage mounts directly with powered or gravity roller conveyors. It provides automated handshake transfers with upstream and downstream horizontal conveyor lines.
ETO Drive & Controls: Powered by an oversized gear motor and chain drive. The control panel includes a PLC pre-wired for dry contact integration with your facility’s WMS or WCS network.
Multi-level automated production lines requiring vertical material routing.
End-of-line palletizing and transfer to upper-level warehouses.
Infeed and outfeed stations for Automated Storage and Retrieval Systems (AS/RS).
For this heavy-duty series, we can engineer load capacities up to [300] tons, with platform dimensions and lifting heights customized to your operational envelope. Requirements exceeding our standard engineering matrix will undergo a Finite Element Analysis (FEA) by our engineering team to ensure structural viability before proposing a solution.
To initiate the engineering proposal, please provide the following baseline data:
Rated Load Capacity
Maximum Lifting Height & Closed Height
Platform Dimensions (L x W)
Duty Cycle (e.g., operational cycles per hour/day)
Environmental Conditions (e.g., indoor/outdoor, washdown, explosion-proof)
Pit depth or overhead clearance constraints
Yes. The control systems can be equipped with standard communication protocols (e.g., Profinet, Modbus, Ethernet/IP) utilizing [Siemens / Allen-Bradley / Omron] PLCs. This ensures seamless I/O signal synchronization with upstream/downstream conveyors, AGV/AMR units, and your central control room.
Every custom unit undergoes a mandatory Factory Acceptance Test (FAT) prior to dispatch. This includes continuous operational testing at 100% rated load, static overload testing at [120% / 125%] capacity, and the physical triggering of all mechanical anti-fall and hydraulic safety interlocks. FAT documentation and video proof are included in your engineering package.
Upon final approval of the General Arrangement (GA) drawings, the manufacturing lead time is typically 4 to 8 weeks. Oversized structural components are engineered with a modular design to fit into standard shipping containers (20FT/40HQ). On-site assembly utilizes pre-engineered bolted flange connections and heavy-duty aviation plugs, strictly eliminating the need for field welding.
We provide a standard [12/24]-month warranty covering the structural frame and primary hydraulic/electrical components. To minimize operational downtime, a comprehensive set of standard consumables (e.g., cylinder seal kits, travel switches, relays) is shipped alongside your equipment. During the warranty period, replacement parts for non-human-induced failures are dispatched via priority air freight (DHL/FedEx) within 48 hours.
Beyond the warranty, we guarantee lifetime engineering support. Your custom equipment's CAD drawings, electrical schematics, and BOM (Bill of Materials) are permanently archived in our system. This ensures you receive uninterrupted remote troubleshooting, maintenance guidance, and exact spare parts matching for the entire lifecycle of the equipment.
Gradin Machinery is a leading manufacturer specializing in aerial work platforms and hydraulic lifting solutions. With ISO & CE certifications, we provide safe, reliable, and customized equipment for global industrial needs
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