A 3-stop enclosed lift completely isolates the vertical transport path within a secure, custom-fabricated hoistway to move multi-ton payloads safely across three facility elevations. Open-shaft configurations in high-traffic or environmentally sensitive manufacturing zones expose personnel to moving carriage hazards and allow airborne debris to contaminate sensitive production materials during transit. Gradin engineers these heavy-duty SJD VRCs by integrating our rigid dual-mast lifting architecture with a fully interlocked steel-mesh or solid-panel enclosure, synchronized directly to the PLC and landing gates. This strict electromechanical architecture ensures the carriage cannot cycle unless all perimeter access points are mechanically sealed and verified. Every structural enclosure, carriage dimension, and guide rail profile is custom-engineered to match your facility’s exact floor-to-floor heights and strict safety compliance requirements.
| Technical Parameter | Standard Specification | Customized Engineering Limit |
| Rated Load Capacity | 1,000 kg — 5,000 kg | Up to 30,000 kg (30 Tons) |
| Lifting Height | Up to 12,000 mm | Up to 30,000 mm (30 Meters) |
| Platform Accuracy | ± 5 mm | High-Precision ± 2 mm |
| Lifting Speed | 4 — 6 m/min | High-Speed 10 m/min (with VFD) |
| Safety Fencing Height | 2,000 mm (Standard) | Full Ceiling-Height Enclosure |
| Drive Components | Dual Hydraulic + Leaf Chain | Traction Drive / Multi-Post Reinforced |
| Control Logic | Multi-Stop Leveling | WMS / WCS Automated Integration |
| Duty Cycle | 10 cycles / hour | High-Frequency (25+ cycles/hour) |
The Gradin SJD 3-Stop Enclosed Lift is an exceptionally advanced and robust industrial solution, meticulously engineered for the secure, efficient, and stable vertical transportation of heavy goods across multiple floor levels. This powerhouse system is indispensable for modern factories, warehouses, and distribution centers that demand optimal material flow, high capacity, and uncompromised operational safety.
Gradin integrates a sturdy multi-post structure with sophisticated automated controls and a full safety enclosure, ensuring unparalleled stability, minimal deflection, and supreme reliability even with massive loads. The Gradin SJD 3-Stop Enclosed Lift is the definitive choice for businesses aiming to conquer complex multi-level logistics challenges, significantly enhancing throughput while mitigating risks associated with heavy vertical transport.
Massive Custom Capacity Engineered for 500kg – 20,000kg Loads: Engineered for demanding industrial applications, the Gradin SJD 3-Stop Enclosed Lift offers an impressive custom load capacity, ranging from a robust 500kg up to a formidable 20,000kg (20 Tons). This broad payload capability makes it the definitive choice for lifting everything from palletized goods to heavy machinery components with absolute confidence and reliability. Its reinforced structure guarantees stable and reliable lifting under continuous heavy use.
Automated 3-Stop Logic with Millimeter-Level Leveling: Experience optimized vertical logistics with the Gradin SJD 3-Stop Enclosed Lift’s automated 3-stop landing control logic. This advanced system allows for programmed stops at up to three distinct floor levels, facilitating seamless and efficient multi-floor material flow with millimeter-level leveling accuracy. It ensures precise positioning and minimizes waiting times, optimizing complex logistical sequences for maximum throughput.
Full Safety with Integrated Safety Mesh Enclosure: The Gradin SJD 3-Stop Enclosed Lift prioritizes personnel and cargo safety through an integrated full-height safety mesh enclosure. This robust cage provides 360° operator protection, preventing accidental contact with moving parts and ensuring that cargo remains securely contained during transit. It delivers comprehensive perimeter safety, minimizing workplace hazards.
Easy Access with Included Ground-Level Ramp: Enhance loading and unloading efficiency with the Gradin SJD 3-Stop Enclosed Lift’s included ground-level ramp. This feature allows for seamless pallet jack, hand truck, or trolley entry directly onto the platform, eliminating the need for complex pit installations. It dramatically reduces installation time and costs, offering a highly convenient and accessible solution.
100% Tailored Engineering for Customizable Platform Size: As a dedicated custom manufacturer, Gradin ensures that every SJD 3-Stop Enclosed Lift is perfectly tailored to your facility’s unique specifications. Platform dimensions, travel height, and access configurations are 100% customizable to fit any existing space or building shaft. This bespoke engineering maximizes efficiency and seamless integration, ensuring compliance with stringent international VERTICAL LIFTING SAFETY STANDARDS .
Multi-Story Warehouses & Distribution Centers: Ideal for efficiently moving palletized goods, bulk containers, and heavy inventory between ground level and up to two elevated storage levels. Its 3-stop automated control and high load capacity are crucial for optimizing storage density and material flow. This is critical for large-scale logistical operations.
Manufacturing & Assembly Plants: Indispensable for vertically transporting raw materials, large components, work-in-progress, and finished products between various production floors in industrial buildings. Its full safety enclosure and precision leveling ensure safe and continuous material flow for complex, multi-level manufacturing processes. The Gradin SJD 3-Stop Enclosed Lift enhances inter-floor material handling.
Retail Backrooms & Commercial Complexes: Perfect for discreetly and efficiently moving stock, display items, and supplies between multiple retail levels, storage areas, and receiving docks. The automated 3-stop control and robust capacity manage high traffic volumes, while the enclosure ensures security. This streamlines replenishment and supports uninterrupted commercial operations.
Archive & Document Storage Facilities: Provides a secure and organized method for vertical transport of sensitive documents, files, and archival boxes to various storage levels in multi-story archives. The millimeter-level leveling ensures smooth handling of delicate materials, and the enclosure protects valuable contents. It enhances accessibility and protection of vital records.
E-commerce Fulfillment & Logistics Hubs: Facilitates the safe and efficient vertical movement of parcels, packages, and freight between different processing and storage levels. Its easy ground-level access and customizable dimensions optimize material flow for rapid order fulfillment. The Gradin SJD 3-Stop Enclosed Lift is an essential tool, complementing a broad array of HYDRAULIC CARGO LIFTING SOLUTIONS .
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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