Polyurethane Elastomer Star-shaped Elastic Coupling Shock Absorbing For General Industrial Pumps

Our Polyurethane Elastomer Star-shaped Elastic Coupling delivers superior shock absorption for general industrial pumps. This coupling reduces vibration, minimizes noise and ensures stable power transmission. The durable polyurethane elastomer resists wear, oil and aging. Ideal for pump systems, our Polyurethane Elastomer Star-shaped Elastic Coupling boosts equipment longevity and operational efficiency.

Beyond our high-performance High Torque Shaft Couplings, we are a professional supplier of a full spectrum of hydraulic machinery spare parts. Our product portfolio covers piston pump spare parts, industrial flow control valves, hydraulic control valves, hydraulic bell housings, hydraulic shock absorbers, and hydraulic rubber components—all designed to meet the maintenance and replacement needs of construction, mining, and agricultural equipment.

Product Specifications

Performance Parameters

High Torque Shaft Coupling performance parameters introduction:

Star-shaped Elastic Coupling (XL Series) Technical Parameters

Plum Type Elastic Coupling (ML Series)Technical Parameters

NL Tooth Type Elastic Coupling (45# Steel)Technical Parameters

NL Tooth Type Elastic Coupling (Cast Iron)Technical Parameters

Applications 

1. Star-shaped Elastic Coupling (XL Series)

• Suitable for connecting coaxial transmission shaft systems of general mechanical equipment, with wide applicability across multiple industries.
• Key matching equipment: Motors, pumps (hydraulic pumps, water pumps), fans, compressors, conveyors, mixers, small reducers and other general-purpose machinery.
• Adaptable working conditions: Light to medium load, stable operation, low to medium speed, no severe impact; normal temperature, dry or slightly humid environments; applicable to occasions requiring compensation for slight shaft deviation (radial, angular, axial).

2. Plum Type Elastic Coupling (ML Series)

• Designed for coaxial transmission shafts with frequent starting, positive and negative rotation changes, medium-low speed and medium-small power.
• Key matching equipment: Electric hoists, winches, assembly line conveyors, small and medium-sized pumps, fans, mixers, extruders, agricultural machinery (small harvesters, irrigation pumps), textile machinery, printing machinery.
• Adaptable working conditions: Frequent start-stop, occasional load fluctuations, medium load, high requirements for operation stability and low noise.

3. NL Tooth Type Elastic Coupling (45# Steel)

• Suitable for high-speed shafts with frequent forward and reverse changes, frequent starting and medium to high load requirements.
• Key matching equipment: Motors, reducers, high-pressure hydraulic pumps, gear pumps, compressors, engineering machinery accessories (small excavator hydraulic systems), mining machinery (small coal mining equipment), machine tool spindles, textile machinery main shafts, generator sets.
• Adaptable working conditions: High speed, large torque, severe load impact, high requirements for transmission accuracy and load-bearing capacity.

4. NL Tooth Type Elastic Coupling (Cast Iron)

• Applicable to high-speed shafts with frequent starting, frequent forward and reverse changes and heavy-load transmission, focusing on cost-effective and wear-resistant requirements.
• Key matching equipment: Mine conveyors, coal washing equipment, cement machinery (rotary kiln auxiliary equipment), large fans, chemical plant compressors, industrial production lines, construction machinery auxiliary equipment (concrete mixers).
• Adaptable working conditions: Heavy load, continuous operation, harsh environments with dust, wear and high temperature; occasions with general precision requirements but high durability requirements.

Key Advantages

•  Star-shaped Elastic Coupling (XL Series)
  Core functional advantages: Polyurethane elastomer provides excellent buffering and shock absorption performance, effectively reducing equipment noise and extending the service life of transmission components.
  Structural advantages: Convex claw design with large concave surface reduces surface pressure on involute teeth; can compensate for relative shaft deviation, avoiding internal deformation from impact and external deformation from centrifugal force.
  Application advantages: Wide applicability, simple structure, stable operation, suitable for general industrial scenarios with low to medium load requirements.
•  Plum Type Elastic Coupling (ML Series)
  Performance advantages: Large transmission torque, high load-bearing capacity, low noise; arc contact design of elastic body ensures long service life.
  Structural advantages: Simple structure, easy installation and maintenance; capable of compensating for relative shaft displacement.
  Application advantages: Strong adaptability to variable working conditions, suitable for equipment with frequent start-stop and positive-reverse rotation changes, and general shaft alignment accuracy.
• NL Tooth Type Elastic Coupling (45# Steel)
  Material advantages: Made of 45# steel, featuring high strength, wear resistance and impact resistance.
  Functional advantages: Can compensate for large axial displacement and slight radial/angular displacement; good buffering and shock absorption performance.
  Application advantages: Suitable for high-speed, heavy-load, high-precision transmission scenarios, with reliable performance in harsh working conditions with frequent start-stop and reverse rotation.
•  NL Tooth Type Elastic Coupling (Cast Iron)
  Material advantages: Cast iron material has good wear resistance, heat dissipation and cost-effectiveness, suitable for large-scale application.
  Functional advantages: Consistent with 45# steel type in buffering, shock absorption and displacement compensation functions; strong adaptability to harsh environments.
  Application advantages: Cost-effective, durable, suitable for heavy-load transmission occasions with general precision requirements, and excellent performance in dusty, high-temperature and wear-prone environments.

Hebei Runhe Hydraulic Machinery Co., Ltd., a subsidiary of Hanjiu Technology Group, is one of the most well-known suppliers to large-scale OEM equipment manufacturers in the domestic hydraulic industry. Our products include hydraulic cylinders, hydraulic pumps, and hydraulic motors, widely used in automation equipment, agricultural machinery, hoisting machinery, engineering vehicles, printing machinery, intelligent warehousing systems, and port vessels.