The Gradin Pit-Mounted Hydraulic Truck Leveler lowers 40000 kg cargo vehicles 1500mm into concrete recesses, aligning high truck beds flush with warehouse floors for direct pallet jack entry.
Rated Capacity: 40000 kg (40T gross)
Envelope / Pit: 12.5 x 3.5 x 1.2 m pit
Motion Spec: 1.5m stroke @ 2.0 m/min
Working Surface: 12.0 x 3.0 m deck
| Engineering Parameter | Imperial Measurement | Metric Value | Structural Standard & Material Traceability |
| Rated Load Capacity | 88184 lbs | 40000 kg (40 Metric Tons) | Uniformly distributed load for 40-ton truck well scissor lift |
| Vertical Lowering Stroke | 59.05 in | 1500 mm | Floor-to-pit depth compensation range |
| Platform Deck Area | 39.37 x 9.84 ft | 12000 mm x 3000 mm | Working surface for warehouse zero-dock loading platform |
| Civil Foundation Pit | 41.01 x 11.48 x 3.94 ft | 12500 x 3500 x 1200 mm | Pit footprint with perimeter steel curb angles |
| Collapsed Profile Depth | 47.24 in | 1200 mm | Minimum retracted height within concrete recess |
| Linear Descent Velocity | 6.56 ft/min | 2.0 m/min | Regulated through proportional lowering valves |
| Scissor Leg Metallurgy | 1.38 in Solid Plate | 35 mm Solid Steel | ASTM A572 Gr. 50 structural steel (certified GB Q355B, EN 10204 3.1) |
| Chassis Support Beams | Heavy Wide-Flange | 250 mm H-Beam Grid | Sub-deck structural members distribute dynamic wheel loads |
| Surface Plate Material | 0.394 in Diamond | 10 mm Checkered Steel | Anti-skid diamond tread deck with drainage slots |
| Hydraulic Ram Package | 4 Units @ 6.3-5.1 in | Φ160-130 Heavy Rams | Honed barrels with hard-chrome induction rods |
| Main Pivot Pin Alloy | AISI 5140 Quenched | 40Cr Alloy Steel | Heat-treated pivot shafts with composite bronze bushings |
| Rupture Safety Valves | Internal Cartridge | Velocity Shutoff Fuses | Dual-cylinder velocity fuse protection directly in ports |
| Electric Motor Power | 20.1 HP Industrial | 15.0 kW / 380V / 50Hz | Siemens IE2 motor driving low-noise vane pump |
| Control Architecture | Digital PLC Enclosure | Siemens S7 System | Siemens PLC hydraulic power unit with remote console |
| Operator Console Type | NEMA 4X Pedestal | Dead-Man Pushbutton | Key-switched lockout with audible descent alarm |
| Safety Standard Code | ANSI MH29.1 / EN 1570-1 | Verified Compliance | Certified to BS EN 1570-1:2024 |
Flame-cut from 35mm solid structural plate and bored on computer gantry mills, these ASTM A572 Gr. 50 structural steel pantograph arms eliminate torsional deflection under rolling axle loads. The chassis channels dynamic wheel impact straight into concrete foundation footings, preventing lateral scissor racking as multi-axle freight lorries enter this warehouse zero-dock loading platform.
Threaded straight into hydraulic ram manifold ports, these dual-cylinder velocity fuse protection valves prevent catastrophic vehicle descent during hydraulic pressure line failure. If high-pressure supply hoses shear under full load, internal poppets seat within 40 milliseconds to lock fluid inside cylinder barrels, holding 40000 kg gross payloads rigid in compliance with ANSI MH29.1 scissor lift standard rules.
Coordinated through digital leveling sensors and NEMA 4X push-button pedestals, this Siemens PLC hydraulic power unit eliminates bed elevation mismatch between vehicle floors and plant slabs. Proportional descent valves regulate linear speeds under variable cargo tonnage, bringing this in-floor flush truck leveler flush with surrounding concrete without sudden shock stops.
Formed from 10mm checkered steel plate and reinforced with an internal 250mm H-beam grid, this anti-skid diamond tread deck eliminates wheel spin under wet industrial conditions. Perimeter wheel guide curbs channel vehicle tires onto the platform centerline, preventing sidewall tire damage and off-center loading on this 40-ton truck well scissor lift.
Engineered for industrial facilities constructed without elevated loading docks or exterior concrete ramps. This in-floor flush truck leveler receives incoming stake trucks and box trailers at grade level, then lowers the vehicle chassis 1500mm into a pit. Hand pallet trucks and walkie stackers roll straight from the warehouse floor into the cargo bed to unload cardboard packaging and palletized goods.
Deployed at high-volume paper mills handling delicate carton stacks and rolls. The 40-ton truck well scissor lift maintains level dock-to-truck transit, eliminating incline ramps that cause fork truck cargo spillage. Anchored inside a 12500 x 3500 x 1200mm reinforced concrete pit, the unit operates across -20°C to +50°C plant temperatures without slab fracture.
Configured for raw material warehouses receiving steel coils, industrial drums, and bulk chemical containers on flatbed trailers. The rigid platform frame withstands 30% dynamic drive-on eccentric loads during multi-axle vehicle entry, while the perimeter concrete recess isolates vehicle loading operations from interior facility pedestrian paths.
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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