Full Gear Coupling FGC 19/ FGC 119 - Gear Coupling

Key Specifications

• Nominal / Maximum Torque Capacity: ~ 710 kN·m (≈ 710,000 Nm)
• Maximum Speed: ~ 950 RPM
• Shaft/Hole Bore Range (on hubs, depending on bore-sleeve): approx. 300 mm – 460 mm
• Approximate Outer Diameter: ~ 1,250 mm
• Approximate Weight (full-flex version): ~ 3,026 kg

How It Works

The coupling consists of two hubs with crowned external gear-teeth mounted on the driving and driven shafts, along with two outer sleeves having matching internal gear-teeth. As the driving shaft rotates, torque is transmitted through the meshing gear teeth via the sleeves to the driven shaft. The crowned-tooth profile and flexible gear-sleeve design allow the coupling to handle angular, parallel and axial misalignments — ensuring smooth, reliable power transmission even if shafts are not perfectly aligned. Proper lubrication (grease or oil) is required for optimal and long-term performance.

Benefits

• Very high torque capacity: Capable of transmitting large torque — ideal for heavy-duty and high-load industrial applications.
• Misalignment tolerance: Accommodates angular, parallel, and axial misalignments — reducing stress on shafts and bearings under load or thermal shifts.
• Shock and vibration absorption: The gear-coupling design helps damp shock loads and reduce vibration under heavy or fluctuating loads.
• Durability and long service life: Constructed with hardened, machined gear-teeth and robust steel hubs/sleeves — engineered for demanding industrial conditions.
• Compact (for its capacity class): Despite high torque rating and large bore capacity, the coupling remains more compact than many alternative torque-transmission solutions for similar loads.
• Maintenance-friendly (with proper lubrication): Requires periodic lubrication; with correct maintenance, ensures long and stable service life.

Typical Applications

• Steel mills, rolling mills and heavy-duty metal-industry drives
• Cement plants, crushers, heavy conveyors, bulk-material-handling equipment
• Large pumps, compressors, blowers, heavy mixers and large-scale fans under high load or continuous duty
• Mining equipment, aggregate-handling plants, dredging drives, and other rugged industrial machinery requiring high torque and misalignment tolerance
• Any heavy-load industrial machinery requiring reliable, flexible power transmission under harsh conditions or varying loads

Selection & Installation Considerations

• Ensure the driven machine’s power and peak load requirement match coupling’s torque capacity (~ 710 kN·m for FGC 19).
• Check shaft/hub bore diameters to be within approx. 300–460 mm or as per custom bore-sleeve for proper fitment.
• Confirm shaft speed does not exceed ~ 950 RPM for safe operation and longevity.
• Allow sufficient clearance for coupling’s outer diameter (≈ 1,250 mm) and ensure it fits within the mechanical layout and alignment envelope.
• Use proper lubrication (grease or oil per operating conditions) and schedule regular maintenance to maintain performance and prolong service life.
• Design for possible shaft misalignment (angular, parallel, axial) — ensure alignment within coupling’s allowable limits to avoid premature wear.

Summary

Full Gear Coupling FGC 19 delivers a high-capacity, heavy-duty coupling solution — capable of transmitting ~ 710 kN·m torque, for shaft bores ~ 300–460 mm, and operating up to ~ 950 RPM. Its robust gear-coupling design, high torque rating, misalignment flexibility, and shock absorption make it well-suited for demanding industrial applications such as steel mills, cement plants, mining drives, heavy conveyors, crushers, compressors/pumps, and other heavy-load machinery. With proper installation, correct alignment and periodic lubrication/maintenance, FGC 19 offers reliable, long-lasting power transmission under strenuous industrial conditions.