| Coupling Size | Torque Nm | Max. Speed (RPM) | Bore Dia MIN | Bore Dia MAX | QTY N | A | B | C | D | E | F |
|---|---|---|---|---|---|---|---|---|---|---|---|
| FBC 9 | 9932 | 1470 | 70 | 152 | 13 | 390 | 316 | 155 | 6 | 225 | 200 |
The Flexible Bolt Coupling FBC 9 represents a pinnacle of the FBC heavy-duty range. Engineered for massive industrial installations, it utilizes an eighteen-pin configuration (N=18) paired with a significantly larger 420 mm outer diameter. This model is built to handle nearly 12,000 Nm of torque, making it the premier choice for primary drives in the most demanding industrial sectors.
Nominal Torque Capacity: 11,927 Nm
Maximum Speed: 1,350 RPM
Bore Diameter Range: 80 mm – 170 mm
Quantity of Pins (N): 18
Outer Diameter (A): 420 mm
Overall Length (B): 331 mm
The FBC 9 operates as a heavy-scale pin-and-bush coupling. Despite its massive size, it maintains the fundamental principle of utilizing eighteen high-tensile steel pins encased in reinforced elastomeric bushes.
Because of its 420 mm outer diameter, the coupling achieves massive mechanical leverage. Torque is transmitted via the compression of the bushes, which allows the unit to dampen the extreme torsional vibrations often produced by high-horsepower motors and heavy gearboxes. The 6 mm axial gap (Dimension D) is crucial at this scale to accommodate the significant thermal expansion and axial float common in large-scale machinery.
Exceptional Torque Capacity: Capable of transmitting 11,927 Nm, it is designed for systems where equipment failure results in massive downtime costs.
Massive Bore Capacity: Accommodates shaft diameters up to 170 mm, making it suitable for the largest industrial output shafts and primary movers.
Superior Vibration Isolation: The eighteen-bush arrangement provides a "soft" interface for heavy-duty power, protecting expensive gear teeth and bearings from shock loads.
Maintenance-Free Reliability: No lubrication is required, eliminating the need for periodic grease replenishment and the risk of oil-related contamination.
High Redundancy: The 18-pin design ensures that the load is distributed so widely that the coupling remains balanced and functional even as bushes age over long service cycles.
Primary Mining Crushers: Handling the violent shock loads and high torque of primary ore reduction.
Large-Scale Water Management: Powering massive municipal water pumps and flood-gate mechanisms.
Steel & Metal Processing: Ideal for main drive shafts in heavy rolling mills and industrial casting equipment.
Industrial Kilns: Driving large rotating industrial ovens in cement and lime production.
Heavy-Duty Conveyor Pulleys: Providing the necessary drive force for high-tonnage bulk material handling systems over long distances.
Operational Speed: The maximum speed is 1,350 RPM. This is optimized for large 6-pole and 8-pole motors and is not intended for high-speed turbine applications.
Deep Hub Engagement (Dimension C): With a hub length of 162.5 mm, it is vital to ensure the shaft and keyway are sized to handle the 11,927 Nm load to prevent localized material yielding.
Logistics and Handling: The FBC 9 is a massive component. Specialized rigging, overhead cranes, and precision laser alignment tools are mandatory for a safe and successful installation.
Bush Inspection: Due to the high torque levels, regular visual inspection of the 18 bushes is recommended to ensure the elastomer remains resilient and has not suffered chemical or thermal degradation.
The Flexible Bolt Coupling FBC 9 is a heavy industrial titan. Offering a staggering 11,927 Nm torque capacity and supporting bores up to 170 mm, it is the definitive choice for protecting large-scale industrial drives. Its 18-pin configuration ensures a fail-safe, vibration-dampened connection that requires zero lubrication, providing a robust and cost-effective solution for the world's most demanding machinery.
