The Rigid Chain Scissor Lift (4-unit synchronized linkage) by Gradin Lifts is engineered to lift extra-long steel pipes and structural profiles up to 4,000 kg.
Zero-Drift Mechanical Drive: Utilizes a heavy-duty 60R rigid lift chain and 5.5 kW gearmotor instead of hydraulics, ensuring absolute position-holding under continuous load.
Synchronized Multi-Unit Linkage: Connects four individual platforms to a single master PLC cabinet, allowing them to raise or lower in perfect alignment or operate independently.
Industrial Mobility Base: Outfitted with four lockable unpowered casters and heavy manual leveling outriggers to secure the platform on uneven workshop floors.
| Parameter | Technical Specification (Single Platform Unit) | Multi-Unit Linkage System Details |
| Model Designation | FZ-RCSL-4T | Synchronized 4-unit linkage array (Profinet Control) |
| Rated Load Capacity | 4,000 kg (4 Tons) | Combined synchronized capacity: 16,000 kg (16 Tons) |
| Platform Dimensions | 3,300 mm x 2,000 mm | Combined synchronized span: 13.2 meters |
| Platform Self-Height | 1,100 mm | Pitless on-floor setup (outriggers raised) |
| Lifting Stroke Height | 3,100 mm | Accurate alignment monitored by multi-axis encoders |
| Lifting Speed | 3.0 meters / minute | Adjustable speed via frequency converter tuning |
| Drive Mechanism | 60R Rigid Lift Chain | Electro-mechanical column lifting (Cylinder: None) |
| Reducer Motor Power | 5.5 kW (AC380V, 50Hz, 3-Phase) | Outfitted with industrial electromagnetic brake |
| Scissor Arm Material | J120 x 60 x 4 mm Rectangular Tubing | Q235 high-tensile structural carbon steel |
| Platform Frame Steel | J160 x 80 x 4 mm Heavy Channel | Highly resistant to dynamic bending stresses |
| Platform Deck Plate | 6 mm Thickness | Custom-reinforced heavy plate for point loads |
| Base Outriggers | 4 Corner Manual Screw-Jacks | Heavy mechanical jacks for leveling and anchor locks |
| Site Portability | 4 Lockable Unpowered Caster Wheels | Heavy polyurethane wheels for manual bay transitions |
| Electrical Enclosure | Shared Central Control Cabinet | Includes 1 set of industrial wireless remote controllers |
Our Rigid Chain Scissor Lift completely replaces standard hydraulic cylinder actuators with a mechanical 60R rigid lift chain mechanism driven by a high-torque 5.5 kW electric gearmotor. The rigid chain functions as a dynamic mechanical column when extended, pushing the scissor arms open from the base. Because it relies entirely on physical gear-to-chain interlocking rather than fluid compression, the table delivers zero hydraulic drift, zero oil leak hazards, and consistent lifting speeds of 3 meters per minute, regardless of temperature or load variations.
Lifting extra-long workpieces like steel pipes or massive structural extrusions requires a wide, multi-point support system to prevent bending moments and structural tilting. This system links four identical 3300 x 2000 mm platforms to a single master PLC cabinet. Through high-speed encoder feedback, the PLC synchronizes the four 5.5 kW motors to maintain level elevation across a 3100 mm stroke. If a single platform encounters an obstruction, the entire system pauses instantly, protecting the long-span workpiece from twisting.
To support a rated payload of 4,000 kg across wide spans, the scissors arms are fabricated from J120 x 60 x 4 mm structural steel rectangular tubing, delivering high moment-of-inertia values. The platform deck frame is reinforced with J160 x 80 x 4 mm carbon steel girders and topped with a 6 mm thick heavy steel deck. This heavy-gauge structural design distributes concentrated weight evenly across the scissor shear planes, keeping deflection under full load well below structural limits.
While engineered for fixed heavy-duty operations, this multi-unit system is designed with site-mobility in mind. Each scissor lift is fitted with four heavy-duty caster wheels with integrated brakes for fast manual positioning across different experimental or assembly bays. At the setup location, manual screw-jack leveling outriggers are lowered to lift the casters off the ground, mechanically securing the machine to the workshop floor to absorb dynamic forces during workpiece loading.
Your Problem: Placing 12-meter-long structural steel pipes onto pipe slitting or welding lines using crane slings causes dangerous swaying, requiring multiple workers to manually steady the load.
Gradin Solution: Positioning four FZ-scissor platforms in a synchronized row supports the entire length of the pipe evenly. The wireless remote control enables a single operator to lift the long load smoothly at 3 meters per minute, perfectly aligning the pipe with the processing mandrel without any physical swaying.
Your Problem: Transporting high-volume, extra-long aluminum extrusions requires precise, continuous horizontal alignment. Hydraulic lifts exhibit minor micro-drifts over time, leading to uneven alignment of downstream palletizers.
Gradin Solution: Because the rigid lift chain mechanically locks at any position, the platform eliminates all micro-drifts. This ensures that all four linked platforms remain perfectly level for hours during continuous packaging operations.
Your Problem: Loading heavy structural H-beams or metal channels into high-density storage racks requires precise vertical positioning under severe unbalanced loading.
Gradin Solution: The high torsional rigidity of our Q235 J120x60x4mm scissor arms easily absorbs heavy off-center loads. Even if a heavy profile is placed on one end of the 12-meter span, the synchronized linkage ensures that all platforms rise smoothly without structural binding.
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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