1. Basic information of GST coupling
Model definition:

GST usually refers to the elastic sleeve pin coupling (GB/T 4323-2002 standard), where "GS" represents "rigid elastic" and "T" represents the "sleeve pin" structure.

Core structure:

Half coupling (cast iron/steel)+elastic sleeve (rubber/polyurethane)+column pin (high-strength alloy steel).

Functional positioning:

Medium torque transmission, compensating for radial/angular deviations, absorbing vibrations and impacts.

2. Key performance parameters
Parameter GST Standard Series High Performance Variant (GST-H)
Shaft hole range 12-160mm 10-200mm (non-standard customization)
Rated torque 16-25000Nm 20-30000Nm (reinforced column pin)
Allowable speed 1500-4000rpm 2000-6000rpm (dynamic balance optimization)
Compensation capability: radial ± 0.2mm, angular ± 0.5 °, radial ± 0.3mm, angular ± 1 °
Elastic sleeve lifespan 20000-50000 hours (normal temperature condition) 50000-80000 hours (oil/high temperature resistant type)
3. Core advantages
High cost-effectiveness: The cost is only one-third of that of diaphragm couplings, suitable for small and medium-sized equipment.

Buffer and shock absorption: The elastic sleeve can reduce the peak impact load by 30% -50% (such as the starting condition of the crusher).

Electrical insulation: Rubber elastic sleeve isolates shaft current and protects motor bearings (in variable frequency drive scenarios).

Quick replacement: When the elastic sleeve is damaged, there is no need to remove the shaft, and the maintenance time is less than 10 minutes.

4. Typical application scenarios
General industry: fans, water pumps, belt conveyors (power ≤ 200kW).

Mining machinery: ball mill, crusher (GST-H impact resistant type required).

Power equipment: Generator shaft coupling (insulation type GST-R).

Agricultural machinery: Harvester transmission (dust cover optional).

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