An enclosed SJD lift integrates a heavy-duty vertical transport platform within a fully shielded hoistway to isolate moving mechanical components from the surrounding facility floor. Open-shaft lifting architectures in high-traffic manufacturing zones create severe liability risks from falling debris and accidental personnel contact with the traveling carriage. Gradin engineers these protected VRCs by surrounding the dual-mast SJD structure with interlocked steel-mesh or solid-panel enclosures that synchronize directly with the onboard PLC. This strict electromechanical architecture prevents the lift from cycling unless all perimeter access points are mechanically sealed and verified, ensuring absolute containment of multi-ton payloads during high-speed elevations. Every enclosure height, carriage dimension, and landing gate configuration is custom-engineered to match your specific facility footprint and strict safety compliance protocols.
| Technical Parameter | Standard Range | Maximum Customization |
| Throughput Capacity | 600 — 1,200 units/hr | Up to 2,000+ units/hr |
| Load Per Unit | 10 kg — 1,000 kg | Customized up to 3,000 kg |
| Lifting Height | 2,000 mm — 15,000 mm | Up to 40,000 mm (40m) |
| Platform Dimensions | 800 * 600 mm | Fully Tailored to Cargo |
| Lifting Speed | 10 — 30 m/min | Inverter Adjustable (High Speed) |
| Infeed/Outfeed | Z, C, or E-Type | Complex Multi-Directional |
| Control System | Relay Logic | Full PLC / SCADA Integration |
The Gradin Enclosed VRC System is an advanced vertical reciprocating conveyor engineered for high-throughput, automated material flow in multi-level industrial environments. This system delivers exceptional efficiency and reliability, making it indispensable for modern logistics and manufacturing operations.
Its robust design and integrated safety features ensure continuous, heavy-duty performance while optimizing floor space utilization. The Gradin Enclosed VRC System is the definitive choice for businesses seeking to revolutionize their vertical material handling with precision and speed.
High Throughput for Automated Vertical Flow: The Gradin Enclosed VRC System is designed for maximum operational speed, delivering an impressive throughput of up to 2,000 units/hour. This high-speed automated vertical flow dramatically boosts productivity and streamlines material movement between different levels, a cornerstone of efficient MODERN MATERIAL HANDLING .
Space-Efficient Design for Multi-Level Integration: Featuring a minimal footprint design, this VRC system excels in space-constrained environments. It integrates seamlessly into multi-level warehouses and production facilities, maximizing usable floor area without compromising on vertical transport capabilities.
100% Tailored Customization for Platform and Conveyor Type: The Gradin Enclosed VRC System offers complete customization, allowing for 100% tailored platform sizes and various conveyor types. This flexibility ensures a perfect fit for diverse material handling needs and seamless integration with existing automated lines.
Durable Precision Chain-Driven System for 24/7 Operation: Built for endurance, the system incorporates a precision chain-driven mechanism, designed for reliable 24/7 heavy-duty operation. This robust drive system ensures consistent performance and longevity, even under continuous, demanding industrial conditions.
Full ISO & CE Compliance with Integrated Safety Logic: Ensuring the highest standards of safety, the Gradin Enclosed VRC System is fully ISO & CE Certified. It features integrated safety logic and an enclosed design, providing comprehensive protection for both operators and transported goods in adherence to international regulations.
Automated Warehouses & Distribution Centers: Ideal for high-volume, multi-level movement of goods, cartons, and totes between different floors in automated storage and retrieval systems (AS/RS). Its high throughput significantly optimizes order fulfillment and inventory management processes.
E-commerce Fulfillment & Sortation Centers: Crucial for rapid and continuous vertical transport of parcels and e-commerce goods between receiving, sorting, picking, and shipping levels. The enclosed design and automated flow support the fast-paced demands of online retail logistics.
Multi-Story Manufacturing & Production Lines: Indispensable for automated transfer of components, sub-assemblies, and finished products between various production stages on different floors. It maintains a synchronized material flow, essential for lean manufacturing and uninterrupted production cycles.
Automotive Assembly & Parts Distribution: Perfect for the efficient, automated vertical movement of parts bins, components, and even larger assemblies within multi-level automotive factories or parts distribution hubs. The durable drive and customizable nature accommodate specific industry requirements.
Logistics Hubs & Parcel Delivery Facilities: Facilitates the quick and secure movement of packages and mail between sorting areas and loading docks across multiple levels. Its space-efficient design and high throughput are vital for maximizing operational density and speeding up delivery networks, complementing various VERTICAL RECIPROCATING CONVEYORS .
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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