Selection focus for this working condition
Heavy-duty couplings for cranes, ship loaders, stackers and reclaimers.
Recommended coupling types Drum gear couplings, grid couplings, brake wheel or brake disc couplings, universal couplings, and safety or torque-limiting couplings.
Typical working conditions Outdoor salt fog, rain and dust, frequent heavy start-stop and braking, low-speed high torque, high shock and fatigue from cyclic operation.
Key selection parameters Duty class, cycle count, peak shock torque, brake thermal capacity, low-speed-end torque, corrosion protection grade and safety factor.
Installation and maintenance notes Use corrosion-resistant coating, inspect fasteners, check brake wheel runout, wear and heat cracks, and periodically verify bolt preload, lubrication and torque-limiter setting.
Use with caution / not recommended Small standard jaw couplings are unsuitable for hoisting or luffing main drives; non-corrosion-protected designs should not be used long-term in open seaports.
