Drum Coupling

Drum Couplings – Heavy-Duty Power Transmission for Crane & Conveyor Systems

JM Drum Couplings are engineered for demanding lifting and material handling applications, specifically designed for drum drives in cranes, hoists, and conveyor systems. Built to withstand continuous heavy loads in harsh environments—including steel mills, ports, and mining operations—JM Drum couplings deliver reliable torque transmission while compensating for shaft misalignment.

Key Features & Benefits

✔ Robust Misalignment Compensation

Angular: Up to 1° (via crowned gear design)

Axial: ±3mm to ±8mm (size-dependent)

✔ Heavy-Duty Construction

Forged Alloy Steel Hubs (42CrMo)

Precision-Ground Gears for smooth engagement

Hardened & Tempered for extended wear resistance

✔ Application-Specific Advantages

No Thrust Load Transmission – Designed purely for torque transfer

Maintenance-Friendly – Grease-lubricated with easy-access fittings

IP65 Protection – Resists dust and water ingress

✔ Safety & Reliability

Fail-Safe Design – Prevents sudden disengagement

Overload Protection – Shear pin options available

Technical Specifications

Torque Range 1,100–948,000 Nm

Bore Diameter 40–600 mm

Max Speed 1,800 RPM

Operating Temp. -30°C to +80°C

Gear Hardness 58–62 HRC