The Gradin 90-Degree Hydraulic Upender is a heavy industrial tilting platform constructed from thick-walled Q355B structural steel, capable of rotating heavy loads up to 40 tons Designed specifically for dies, molds, and steel coils, it replaces hazardous overhead crane-tilting operations, which frequently cause chain slippage and mold drop accidents. This dual-cylinder configuration solves the critical issue of asymmetrical center-of-gravity shifts during rotation, providing continuous, velocity-controlled mechanical overturning while ensuring absolute operator safety during mold maintenance and coil preparation
The specifications detailed below represent a recently completed high-capacity system configured for automotive die-stamping cells. All structural metrics, cylinder ratings, and platform profiles are fully customizable by Gradin to match your specific crane capacity and spatial limitations.
| Engineering Parameter | SMR-Hydraulic 90° Spec / 技术数值 | Non-Standard Customization Options |
| Max Tilting Capacity | 10,000 kg to 40,000 kg (10t – 40t) | Custom engineered up to 80,000 kg |
| Rotation Angle | 0° to 90° single direction rotation | Up to 180° continuous turn-over custom |
| Platform Deck Size (W * D) | 1,800 mm * 2,000 mm / 2,500 mm * 2,500 mm | Scaled to match maximum die dimensions |
| HPU Motor Power | 5.5 kW / 7.5 kW / 11.0 kW | Configured for dynamic heavy cycle frequency |
| Hydraulic Cylinder Specs | Double-Acting Heavy Bore (Ex-Lock fitted) | Custom-sized based on rotational peak moment |
| Overturning Turn Time | 60 seconds to 120 seconds | Variable frequency speed adjustment |
| Baseplate Anchor Thickness | 30 mm Carbon Steel Anchored Plate | Custom base layouts for overhead setups |
| Hinge Pivot Pin Material | 40Cr Steel (Induction Hardened, Ground | Bronze/lubricated bush combinations |
| Control Interface | Two-Hand Push Button Control Consol | Pedant switch or wireless industrial remote |
| Platform Protection | Exposed Steel / Bolted UHMW-PE liners | Bolted high-lead brass wear blocks or V-saddle |
Double-Acting Hydraulic Cylinders with Pilot-Operated Overcenter Safety Valves
Turning heavy industrial loads past their 45-degree center-of-gravity pivot point causes an abrupt gravity-drop that blows standard hydraulic seals and risks platform collision. Gradin equips the upender with heavy-bore double-acting hydraulic cylinders integrated with dual pilot-operated overcenter valves. This closed-loop hydraulic circuit actively regulates fluid return flow in both directions, holding back the load and ensuring smooth, constant velocity throughout the entire 90-degree arc.
Heavy-Stiffness L-Shaped Box-Girder Steel Platform
Concentrated point loads from narrow die edges or heavy steel coils can indent and twist standard welded plate decks over continuous cycles. Gradin fabricates the L-shaped platform from reinforced Q355B box-girder steel sections with internally braced gussets and 20mm thick top plates. This high-stiffness structural matrix resists localized deformation and dynamic bending moments, maintaining its exact 90-degree alignment under off-center placement.
Large-Diameter Induction-Hardened 40Cr Solid Steel Pivot Shafts
Extreme torsional shear forces concentrate at the main rotational hinges during rotation, leading to shaft bending or frame alignment failures. We engineer the primary pivot points from large-diameter, induction-hardened 40Cr solid steel pins housed inside thick-wall self-lubricating graphite-bronze bushings. This heavy pivot configuration reduces wear, handles massive radial loads, and requires zero grease maintenance over its operational lifetime.
Optional Damage-Resistant UHMW-PE Platform Surface Buffering
Unprotected metal-on-metal contact between high-value steel molds and the lift platform can scrape finished die surfaces and generate violent structural impacts during crane unloading. Gradin offers optional heavy-duty UHMW-PE or polyurethane protective wear plates mechanically fastened to the platform surfaces. These protective pads absorb landing impacts, damp vibration, and eliminate metal scratching on sensitive process machinery.
Floor-Flush Structural Base with Leveling Chemical Anchor Plates
Anchoring heavy rotating equipment onto uneven concrete can cause vibration, base shifting, or long-term foundation cracking under dynamic loads. Gradin designs the upender base from heavy-section Q355B structural channels with oversized chemical anchor baseplates. Adjustable leveling jacks allow perfect vertical alignment during installation, transferring dynamic rotational forces directly to the foundation.
Siemens S7-1200 PLC with End-of-Travel Proximity Deceleration Sensors
High inertia during heavy-load rotation can cause violent stopping shocks at the 0-degree and 90-degree travel limits, stressing the structural base and concrete foundation. The electrical system utilizes a Siemens S7-1200 PLC paired with proximity sensors and limit switches that initiate slow-speed deceleration near the travel ends, executing smooth, soft-stops that protect both the machine and the mold.
Bolted-On V-Saddle and Cradle Modifications for Cylindrical Steel Coils
Cylindrical rolls or steel coils will roll off a flat L-shaped deck if rotated, presenting severe crushing hazards in the warehouse packing area. For coil and roll applications, Gradin customizes the platform with a heavy-duty bolted-on V-saddle or protective roll cradle. This geometry securely nests the round profile, preventing rolling while allowing easy overhead crane or forklift sling access.
Automotive Body Sheet-Metal Stamping Shops
Manipulating and turning massive automotive body pressing dies (such as car roof and door panel molds) through 90 degrees. The 90-Degree Hydraulic Upender provides a ground-level, controlled-speed work area to safely roll dies over for routine cleaning, polishing, and internal slider maintenance, completely eliminating risky crane-flipping maneuvers
Cold-Rolled Steel & Copper Coil Packaging Plants
Flipping continuous metal coil stock from the vertical “eye-to-the-sky” pallet shipping position to the horizontal “eye-to-the-wall” decoiler feed axis. Configured with bolted-on V-saddles, the platform prevents heavy coil telescoping or dynamic slide-out, delivering stable preparation before sheet feeding.
Heavy Electric Motor & Large Generator Machining Cells
Overturning heavy cylindrical motor frames and generator stator blocks for internal winding and core insertion. The Siemens PLC slow-down deceleration sensors eliminate tipping shocks, ensuring highly sensitive electrical laminations are not shifted or damaged during the turnover process.
Paper Mills & Plastic Film Roll Distribution Hubs
Upending and positioning jumbo packaging rolls and film rolls from horizontal rewinder outputs onto vertical shipping pallets. Lined with non-marking UHMW-PE wear plates, the L-shaped platform prevents tearing of outer paper layers or delicate plastic materials.
Precast Concrete & Architectural Marble Yards
Flipping large concrete panels or heavy marble blocks to prevent crack propagation and structural fracture. The smooth, velocity-controlled cylinder movement minimizes peak dynamic stress on fragile structures, safeguarding expensive architectural materials from fracturing.
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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