Selection focus for this working condition
Grid, gear and safety couplings for impact, overload and field replacement.
Recommended coupling types Grid couplings, hydrodynamic couplings, elastic pin gear couplings, drum gear couplings, and safety or torque-limiting couplings.
Typical working conditions High impact load, frequent stalling and transient overload, heavy dust, muddy water, vibration, uneven starts and large shaft-line offset.
Key selection parameters Short-time overload capacity, stall protection setting, elastic element fatigue, shaft and key strength, temperature, protection grade and service space.
Installation and maintenance notes Set blockage and overload interlocks, keep springs, elastomers and seals as spares, and inspect foundation stiffness, guards, shaft runout and key wear.
Use with caution / not recommended Large-inertia crushers should not use direct hard start with rigid coupling; low-grade elastomers are unsuitable for long-term strong impact and abrasive dust.
