| Coupling Size | Torque Nm | Max. Speed (RPM) | Bore Dia MIN | Bore Dia MAX | QTY N | A | B | C | D | E | F |
|---|---|---|---|---|---|---|---|---|---|---|---|
| FBC 10 | 14420 | 1300 | 90 | 175 | 16 | 440 | 366 | 180 | 6 | 255 | 200 |
The Flexible Bolt Coupling FBC 10 represents the maximum standard frame size in the FBC series. It is a massive industrial component designed for extreme torque applications. Utilizing an eighteen-pin configuration (N=18) and a substantial 475 mm outer diameter, it provides the mechanical leverage necessary to handle a nominal torque of 16,609 Nm.
Nominal Torque Capacity: 16,609 Nm
Maximum Speed: 1,200 RPM
Bore Diameter Range: 100 mm – 190 mm
Quantity of Pins (N): 18
Outer Diameter (A): 475 mm
Overall Length (B): 381 mm
The FBC 10 functions as a high-capacity torsional damper. It features two massive flanges connected by eighteen heavy-duty steel pins. Each pin is isolated by a high-durometer elastomeric bush that absorbs the energy of the drive system.
At this scale, the coupling is designed to manage the immense inertia of large-scale industrial rotors. The torque is transmitted through the uniform compression of all 18 bushes, which allows the coupling to:
Protect the Drive Train: Prevent the transmission of peak torque spikes that could shatter gear teeth.
Compensate for Thermal Expansion: Utilize the 6 mm axial gap (Dimension D) to accommodate the significant growth of massive shafts as they reach operating temperature.
Correct Misalignment: Handle angular and parallel offsets that are inevitable in large-scale structural installations.
Maximum Shaft Support: Accommodates bores up to 190 mm, fitting the largest primary drive shafts used in heavy industry.
Lubrication-Free Reliability: Eliminates the maintenance complexity and environmental hazards of grease-filled gear couplings.
Torsional Softness: The large volume of elastomeric material provides a "cushioned" start, reducing the electrical and mechanical stress on the motor.
Ease of Component Replacement: Despite its size, the pins and bushes can be serviced without moving the massive motor or driven machine (depending on the installation layout).
High Fail-Safe Redundancy: The 18-pin arrangement ensures that the system remains operational even if the flexible elements begin to reach the end of their service life.
Primary SAG & Ball Mills: Essential for the massive torque and shock loads found in mineral processing and mining.
Large-Scale Hydroelectric Generators: Connecting turbines to generators in renewable energy plants.
Main Drive Steel Mill Rollers: Handling the extreme forces required to shape industrial metal products.
High-Volume Flood Control Pumps: Powering the massive pumps used in municipal drainage and irrigation projects.
Heavy-Duty Marine Propellers: Used in the main drive strings of industrial vessels and tugs.
Speed Limits: The maximum operational speed is 1,200 RPM. This is strictly for slow-speed, high-torque industrial movers (8-pole or geared motors).
Substantial Hub Depth (Dimension C): The 187.5 mm hub length requires an exceptionally long shaft and keyway. Proper key sizing is critical to prevent the 16,609 Nm load from shearing the key or damaging the hub.
Heavy-Lift Logistics: At 475 mm wide and nearly 400 mm long, the FBC 10 is an extremely heavy assembly. Installation requires heavy-duty cranes, certified rigging, and precision laser alignment.
Alignment Accuracy: Even with its flexible design, the alignment of 190 mm shafts must be precise to ensure the eighteen pins share the massive load equally, preventing localized overheating of the bushes.
The Flexible Bolt Coupling FBC 10 is the ultimate "fit-and-forget" solution for the most demanding industrial drives. By offering a 16,609 Nm torque capacity and a maximum bore of 190 mm, it provides a robust and maintenance-free link for massive machinery. It is the premier choice for engineers who prioritize drive-train protection, vibration isolation, and long-term reliability in high-stakes industrial environments.
