The 180-Degree Industrial Coil Inverter rotates 6000 kg steel rolls through a full 180-degree vertical arc, transferring coils between pallets without outer-wrap telescoping or surface damage.
Rated Payload Capacity: 6000 kg Safe Working Load (125% static proof test to 7500 kg)
Chassis Envelope (Floor-Mounted): 2630 × 2300 × 2820 mm (L × W × H, surface anchor profile)
Motion Profile: 0° to 180° inversion in 62 seconds via 1:126 helical-bevel reduction
Usable Deck Surface: Dual 2000 × 2000 mm steel platens with 130 to 830 mm clamping span
| Technical Parameter | Engineering Specification / Design Standard |
| Equipment Model | SJG-6000-180 Industrial Coil Inverter |
| Rotation Topology | Annular mechanical C-frame cradle with dual trunnion roller supports |
| Rated Load Capacity | 6000 kg Safe Working Load (125% static proof test to 7500 kg) |
| Rotation Angle Range | 0° to 180° bidirectional mechanical inversion |
| Rotation Cycle Time | 62 seconds nominal travel time under full 6-ton rated load |
| Platform Deck Dimensions | 2000 mm W × 2000 mm D CNC flame-cut steel platens |
| Daylight Opening Window | 130 mm minimum grip span to 830 mm maximum daylight opening |
| Workpiece Size Envelope | Coil outer diameter 1200 to 1800 mm; strip width 130 to 830 mm |
| Rotational Drive Motor | 4.0 kW helical-bevel gearmotor (SEW SR97 series) |
| Gearbox Reduction Ratio | 1:126 speed reduction ratio with mechanical self-locking geometry |
| Primary Motion Drive | ANSI 60-4 / 12A-4 quadruplex heavy-series roller chain |
| Hydraulic Clamping Motor | 3.0 kW motor-pump station running at 16 MPa circuit pressure |
| Clamping Actuation | Dual heavy-duty hydraulic cylinders (700 mm stroke / Ø80 mm bore) |
| Structural Steel Grade | ASTM A572 Grade 50 high-strength low-alloy plate (
) |
| Quality Documentation | Mill test certificates supplied per EN 10204 Type 3.1 |
| Electrical Power Feed | 400V 50Hz 3-phase (TN-S), red 5-pin CEE industrial plug (IEC 60309, 32A) |
| Operator Controls | Floor-mounted IP54 control console plus industrial wireless radio remote |
| Surface Finish Palette | Base frame RAL 5012 Light Blue; rotating C-drum RAL 1023 Traffic Yellow |
| Net Equipment Tare Mass | 5000 kg total (Stationary base: 1300 kg; Rotating C-cradle: 3700 kg) |
| Safety Code Compliance | DIN EN ISO 12100 / ANSI B11.19 machinery safeguarding criteria |
CNC plate rolling and full-penetration submerged arc welds form the C-frame cradle from ASTM A572 Grade 50 high-strength low-alloy steel. This heavy-plate box girder resists dynamic torsional deflection under 6000 kg turning moments. Four machined alloy steel trunnion rollers support the annular ring to disperse radial reactions into the floor anchor base. Certified EN 10204 3.1 inspection documentation confirms plate yield strength above 345 MPa.
Precision cylindrical grinding and induction hard chrome plating protect the Ø70 mm guide columns from surface galling during vertical clamping. Dual synchronized hydraulic cylinders actuate the 2000 × 2000 mm top platen between an 830 mm daylight opening and a 130 mm minimum package thickness. Flange-mounted counterbalance valves lock circuit pressure at 12 MPa, preventing coil package drift through the 180-degree rotational arc.
High-frequency induction hardening on ring gear teeth stops tooth profile deformation and prevents chain tooth skipping under peak inversion loads. A 4.0 kW helical-bevel gearmotor directs power through a 1:126 ratio industrial gearbox to drive the heavy-series ANSI four-strand roller chain. The powertrain maintains a 62-second cycle rotation time while delivering mechanical self-locking through the vertical center-of-gravity transition.
Terminal barrier isolation and phase-monitoring relays protect switchgear from phase reversal and high-voltage electrical arcing inside the control cabinet. The architecture pairs an IP54 industrial operator console with a handheld industrial radio transmitter. Dual mechanical limit switches enforce hard cutoffs at 0-degree and 180-degree home stations, meeting industrial electrical guidelines under NFPA 79 and safety system rules per ANSI B11.19.
Cold rolling facilities execute 180-degree turnovers to swap internal transport skids for export wooden pallets beneath eye-to-sky slit rolls. This orientation exchange protects strip edges without altering the vertical eye axis. The machine accommodates coil outside diameters from 1200 to 1800 mm with an allowable center-of-gravity offset of 100 mm. Floor foundations require flat reinforced concrete engineered for an 11-ton gross operating load (5.0-ton machine tare plus 6.0-ton dynamic coil mass). Built to operate inside plant temperatures between -10°C and +45°C.
Automotive press shops invert inbound master slit coils from wooden delivery skids onto clean composite press-feed pallets ahead of blanking operations. The hydraulic clamping platen secures strip widths between 130 and 830 mm through continuous multi-shift production schedules. Base anchoring mandates M24 chemical stud anchors embedded into 20 MPa (minimum 200 mm depth) reinforced concrete slabs, resisting dynamic tipping moments across ambient thermal bounds of 0°C to +50°C.
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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