SJG Fixed Scissor Hydraulic Lift Platform for Industrial Use

The SJG series fixed scissor-lift hydraulic lifting platform is a cargo lifting device known for excellent stability and broad applicability. It is primarily used for transferring goods between different heights on production lines, loading/unloading materials, adjusting workpiece height during assembly, feeding overhead equipment, loading/unloading large machine tools, and enabling rapid cargo handling in warehouses and loading docks when paired with forklifts or other transport vehicles.

The SJG series covers load capacities from 0.3T to 28T, with platform sizes ranging from 1200×1200mm to 8000×3000mm, lifting heights from 1m to 8.5m, and a collapsed unit height of just 420–1450mm. The scissor-lift design ensures stable lifting, even load distribution, and a long service life. Optional add-ons such as hydraulic tilting tables, roller conveyor lines, extension flaps, and explosion-proof electrical controls can be configured to suit a wide range of operating conditions.

Smooth, level lifting with even load distribution: The multi-link scissor mechanism keeps the platform perfectly horizontal throughout the entire lifting stroke, ensuring loads remain stable and secure. Heavy-duty models handle up to 28T, meeting the most demanding equipment lifting requirements.

Ultra-low collapsed height: At just 420mm (SJG4-1), the platform can be installed without the need for a deep pit. Compared to guide-rail lifts, the scissor design is better suited for open-floor installation and offers greater placement flexibility.

Wide range of add-on options: Optional accessories include hydraulic tilting tables, roller conveyor lines, rotating platforms, extension flaps, and explosion-proof electrical controls, allowing the platform to be tailored to assembly lines, conveyor lines, overhead feeding, and many other applications.

Extremely broad applicability: From light-duty (0.3T) to heavy-duty (28T) models, from 1m low-lift to 8.5m high-lift versions, and from compact 1200×1200mm platforms to large 8000×3000mm decks, the SJG series covers virtually every fixed hydraulic lifting requirement.

Comprehensive safety protection: Equipped with hydraulic rupture valves, limit switches, overload protection, emergency stop buttons, and mechanical safety support legs, the platform ensures maximum safety for both personnel and cargo.

The SJG series fixed scissor-lift hydraulic lifting platform operates on the principle of hydraulic-driven scissor arm extension. A motor-driven hydraulic pump station generates high-pressure hydraulic oil, which drives the hydraulic cylinder to extend the scissor arm assembly, raising the work platform. The scissor arms consist of multiple crossed linkages connected by pivot pins. As the cylinder applies thrust, the linkage angles increase progressively, causing the platform to rise vertically.

During lowering, the solenoid directional valve opens the return oil path, and the hydraulic oil flows back to the reservoir at a controlled rate through the throttle valve under the load's dead weight, allowing the scissor arms to fold gradually and the platform to descend smoothly. The hydraulic system is fitted with a rupture valve that automatically locks the oil circuit in the event of an unexpected line failure, preventing the platform from dropping rapidly. Compared to guide-rail lifts, the scissor design offers a lower initial height and more compact folded dimensions, making it ideal for open-floor installation.

This lift platform consists of the following core components:

Loading Platform: A welded platform made of anti-slip checkered steel plate, equipped with removable guardrails or hinged flaps on all sides. The table surface can be customized with rollers, turntables, turnover mechanisms, and other optional attachments as needed.

Scissor Arm Assembly: Cross-linked arm sets fabricated from high-strength structural steel, connected via pin shafts. The number of arm sets ranges from 2 to 6 depending on the lifting height, ensuring the platform remains level throughout the entire travel. All scissor arms undergo weld seam flaw detection testing, with a safety factor ≥2.0.

Hydraulic Drive System: Comprises a motor, hydraulic pump station, hydraulic cylinders, solenoid directional valve, throttle valve, and piping. The number of hydraulic cylinders ranges from 1 to 4 based on load capacity, with heavy-duty models featuring a synchronized flow divider valve to ensure multi-cylinder synchronous movement.

Base Frame: A welded base constructed from I-Beam or H-Beam steel, supporting the full equipment weight and cargo load. The base is equipped with anchor bolt mounting holes for secure fixing to the floor, preventing any displacement.

Safety Protection Devices: Hydraulic burst-proof valve, limit switch, overload protector, emergency stop button, and mechanical safety support bar (for maintenance use). Optional additions include an audible and visual alarm and an explosion-proof electrical box.

Electrical Control System: Floor operation box with up/down buttons, emergency stop, and power indicator. Customizable options include remote control operation, PLC control integration, and multi-point control across different floors.

Production Line Height Transition: Provides smooth cargo transfer between assembly lines at different heights. The SJG platform offers an adjustable lifting height of 1 to 8.5m, and can be integrated with rollers or conveyor belts for automated material flow.

Large Machine Tool Loading/Unloading: Heavy-duty SJG models (5T to 28T) work with forklifts or AGVs to enable efficient loading and unloading of large molds and heavy workpieces, replacing overhead crane operations with a safer and more convenient solution.

Warehouse Loading Docks: Used in conjunction with forklifts to bridge the height gap between the dock and truck bed for rapid cargo handling. The SJG4-1 model has a collapsed height of only 420mm, making it ideal for low-dock applications.

Workpiece Assembly Operations: Adjusts the workpiece to the optimal working height on assembly lines, reducing the need for workers to bend or reach overhead. This lowers physical strain, improves assembly efficiency, and enhances overall quality.

Elevated Feeding & Sorting: Works with conveyor lines to lift materials to elevated hoppers or sorting platforms. The SJG1.5-8.5 model offers a lifting height of 8.5m, meeting the requirements of high-level rack feeding.

By Load Capacity: For light loads of 0.3 to 1T, choose the SJG0.3~1 series (ideal for small workpieces and material handling); for medium loads of 2 to 5T, choose the SJG2~5 series (suitable for molds and pallet transfer); for heavy loads of 6.5 to 28T, choose the SJG6.5~28 series (designed for large equipment and heavy workpieces).

By Lifting Height: The last digit in the model number indicates the net lifting height in meters. For low-lift applications under 2m, select an SJG model with a minimum collapsed height of just 420mm; medium-lift models (3 to 5m) offer the widest range of options; for high-lift needs up to 8.5m, choose the SJG1.5-8.5, which has a collapsed height of 1450mm and requires adequate installation clearance.

By Additional Features: For automated assembly line integration, choose the roller conveyor type; for cargo rotation, select the turntable model; for tilt-discharge applications, go with the hydraulic turnover version; for flammable environments, opt for the explosion-proof electrical model; and for operation without a power supply, choose the manual hydraulic type.

Henan Kelude Heavy Industry Co., Ltd. provides end-to-end services for the SJG series fixed scissor lift platform, from design through installation.

Custom Design: Based on customer-provided parameters such as load capacity, table dimensions, lifting height, and installation environment, we provide a free technical solution and 3D drawings. Production is scheduled upon confirmation, with a lead time of 5 to 15 days depending on model complexity.

Testing & Commissioning: Every unit undergoes a static test at 1.25 times the rated load and a dynamic load test at 1.1 times the rated load before leaving the factory. Scissor arm welds are inspected via flaw detection, and the hydraulic system undergoes a 24-hour pressure hold test to ensure safety and reliability.

Installation & After-Sales: We provide on-site installation and commissioning services. The full machine comes with a 12-month warranty, and the hydraulic pump station and motor are covered for 24 months. After-sales service requests are responded to within 48 hours nationwide.

Need a quotation for the SJG scissor lift platform?

Provide your load capacity, table dimensions, lifting height, and additional device requirements, and we will customize a solution and quotation for you within 2 hours.

Consultation Hotline: 13903802779

Q: Does the SJG fixed scissor lift platform require a pit to be dug for installation?

No. The SJG series is designed for floor-mounted installation. The equipment's own height ranges from 420 to 1450mm and it can be directly anchored to a hardened floor. If you require the table surface to be flush with the floor (zero height difference), a pit of the corresponding depth must be excavated. Direct floor mounting saves on civil construction costs and is ideal for retrofitting into existing factory buildings.

Q: What is the difference between a scissor lift platform and a guide-rail lift?

The scissor lift (SJG) operates through the folding and unfolding of scissor arms. It has a low initial height (minimum 420mm) and is suitable for open floor mounting and short travel distances (≤8.5m). The guide-rail lift (SJD) travels along fixed rails and is suitable for long travel distances (≤14m) within a shaft. The scissor lift has a small footprint and is flexible to move; the guide-rail lift is ideal for heavy-load transport between floors.

Q: Can the SJG platform operate automatically on an assembly line?

Yes. The SJG series can be equipped with a PLC control interface to link with a host computer or assembly line control system, enabling functions such as automatic lifting, timed cycles, and synchronized start/stop with the conveyor line. Photoelectric sensors and limit switches can also be added for automatic stop at position and automatic leveling.

Q: How stable is the model with a maximum load capacity of 28T?

The SJG28—1.9 features 4 to 6 sets of reinforced scissor arms, driven by multiple hydraulic cylinders in synchronization, with a flow divider/combiner valve ensuring synchronized movement of all cylinders. The platform measures 4000×3500mm, and the base is secured to the concrete foundation with anchor bolts, ensuring stable and reliable lifting. For 28T loads, we recommend using a forklift or overhead crane for loading and unloading.

Q: How do I clean and maintain the scissor arms?

Lubricate the pivot points of the scissor arms once a month with general-purpose lithium-based grease. Inspect the pins and bushings for wear quarterly and replace them promptly if excessive clearance is found. Regularly clean dust and oil from the scissor arm surfaces to prevent debris from entering the pivot points and accelerating wear. Clean the radiator of the hydraulic power unit every six months to ensure proper heat dissipation.

Q: Can the SJG platform be fitted with explosion-proof configurations?

Yes. For flammable and explosive environments such as chemical plants, painting shops, and dusty areas, we can configure an explosion-proof motor (ExdⅡBT4 rating), explosion-proof electrical control box, explosion-proof hydraulic power unit, and explosion-proof limit switches. Please specify your explosion protection class requirements during selection so that the corresponding explosion-proof components can be matched.

Q: Can it be installed on an uneven floor in an old factory building?

Yes. Leveling shims can be added beneath the base frame during installation to adjust levelness to within ±1mm/m. If the floor height difference is significant (>10mm), we recommend local leveling treatment or a custom-raised base. Our technicians will conduct a site survey before installation to ensure the base is level and secure.