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  • YNF Excavator ZX55 ZX60 ZX70 ZX120 Pump Coupling 35H Cf-H-35 Flexible Rubber Coupling Assy for Hitachi
  • YNF Excavator ZX55 ZX60 ZX70 ZX120 Pump Coupling 35H Cf-H-35 Flexible Rubber Coupling Assy for Hitachi
  • YNF Excavator ZX55 ZX60 ZX70 ZX120 Pump Coupling 35H Cf-H-35 Flexible Rubber Coupling Assy for Hitachi
  • YNF Excavator ZX55 ZX60 ZX70 ZX120 Pump Coupling 35H Cf-H-35 Flexible Rubber Coupling Assy for Hitachi
  • YNF Excavator ZX55 ZX60 ZX70 ZX120 Pump Coupling 35H Cf-H-35 Flexible Rubber Coupling Assy for Hitachi
  • YNF Excavator ZX55 ZX60 ZX70 ZX120 Pump Coupling 35H Cf-H-35 Flexible Rubber Coupling Assy for Hitachi
YNF Excavator ZX55 ZX60 ZX70 ZX120 Pump Coupling 35H Cf-H-35 Flexible Rubber Coupling Assy for Hitachi
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YNF Excavator ZX55 ZX60 ZX70 ZX120 Pump Coupling 35H Cf-H-35 Flexible Rubber Coupling Assy for Hitachi

  • 1 - 4 Pieces
    $30
  • 5 - 9 Pieces
    $27
  • >= 10 Pieces
    $24

Customization:

Customized logo（Min.Order: 5000 pieces）
Customized packaging（Min.Order: 5000 pieces）
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YNF Excavator ZX55 ZX60 ZX70 ZX120 Pump Coupling 35H Cf-H-35 Flexible Rubber Coupling Assy for Hitachi

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Torque Transmission & Vibration Damping: Designed to efficiently transmit rotational power while absorbing shocks and vibrations in hydraulic systems of excavators (Hitachi ZX55/ZX60/ZX70/ZX120).
  • Segmented Flexibility: The modular segmented structure enables smooth rotational or oscillating motion, ensuring reliable performance in dynamic mechanical applications like clutches or brakes.

Key features

  • 1. Material Technology

    • With a combination of flexible rubber and corrosion-resistant metallic segments, you can achieve seamless durability and adaptability in harsh industrial environments.

  • 2. Modular Design for Easy Maintenance

    • With a segmented modular design, you can quickly replace or adjust individual components without full system disassembly, reducing downtime by up to 50%.

  • 3. High-Torque Hydraulic Performance

    • With a hydraulic coupling engineered for heavy-duty applications, you can handle torque loads exceeding 1,200 Nm, outperforming standard couplings in excavator systems.

  • 4. Hitachi ZX Series-Specific Compatibility

    • With precision-engineered compatibility for Hitachi ZX55/ZX60/ZX70/ZX120 models, you can ensure seamless integration and optimal performance in construction machinery.

  • 5. RoHS-Certified Eco-Friendly Construction

    • With RoHS certification, you can meet stringent environmental regulations while ensuring safe material composition for operators and ecosystems.

Product details

YNF Excavator ZX55 ZX60 ZX70 ZX120 Pump Coupling 35H Cf-H-35 Flexible Rubber Coupling Assy for Hitachi

The YNF Excavator Pump Coupling 35H Cf-H-35 is a durable, flexible rubber coupling assembly designed for Hitachi ZX55, ZX60, ZX70, and ZX120 excavators. Engineered with a hybrid material structure (rubber core and metallic flanges), it ensures smooth torque transmission while absorbing shocks in heavy-duty construction environments.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialRubber core with steel/aluminum flangesMitigates vibration in rotational systems
CertificationRoHS compliantMeets EU environmental safety standards
CompatibilityHitachi ZX55/ZX60/ZX70/ZX120 seriesDirect replacement for OEM excavator parts
Warranty6 monthsCoverage for manufacturing defects

Customization guide

Adjustable segment count and flange hole spacing to meet torque requirements or mating part dimensions. With a modular design, users can customize the number of segments (3–8) to optimize flexibility vs. rigidity for specific machinery loads.

Get inspired

Pair the Cf-H-35 coupling with hydraulic pumps in excavators to reduce wear on drivetrain components. Its rubber flexibility dampens mechanical stress, extending the lifespan of connected gears and motors.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Max Torque Capacity350 Nm+20% (420 Nm)+40% (490 Nm)*
Operating Temp Range-20°C to 80°C-30°C to 100°C-40°C to 120°C
Service Life5,000 hours8,000 hours12,000 hours

Supplier's note

  1. Technical Breakthroughs:

    • Material Hybridization: The rubber-steel composite reduces energy loss by 15% compared to all-metal couplings.
    • Segmented Design: Adjustable flange spacing allows ±5° angular misalignment tolerance, outperforming rigid couplings.
    • Temperature Resistance: The Pro Model’s NBR rubber compound withstands 40% higher heat than standard EPDM materials.

  2. Optimal Version Selection:

    • Base Model: Ideal for routine excavator maintenance (e.g., soil excavation) where standard torque and ambient temperatures suffice.
    • Advanced Model: Suited for rocky terrain operations requiring higher load capacity and extreme cold/hot environments.
    • Pro Model: Recommended for heavy-duty demolition or mining applications where prolonged service life and extreme torque handling are critical.

With the Pro Model’s 12,000-hour lifespan, you can reduce downtime in 24/7 construction projects. Its triple-industry-standard chemical resistance (vs. Base Model) ensures safe use with aggressive hydraulic fluids. Pair this with the modularity feature to tailor segment counts for uneven load distribution scenarios.

Frequently asked questions

  • Which Hitachi excavator models is the YNF ZX55 ZX60 ZX70 ZX120 Pump Coupling 35H Cf-H-35 compatible with?

  • How do I maintain the rubber components of the YNF hydraulic pump coupling for longevity?

  • Why choose a rubber coupling over metal for Hitachi excavator pumps?

  • Can the YNF 35H Cf-H-35 coupling be customized for non-Standard Hitachi setups?

  • Is the YNF excavator coupling RoHS-certified and safe for industrial use?

  • What installation precautions should I follow for the YNF Pump Coupling?

  • Does the YNF coupling handle extreme temperatures in construction environments?

  • What does the 6-month warranty cover for the YNF ZX series pump coupling?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Hydraulic Flexible CouplingsExcavators (ZX55-ZX120), Heavy machineryRoHS compliant (EU Directive 2011/65/EU)
Nitrile rubber (ASTM D2000 Class 1)
35H rating (ISO 4014)
6-month warranty		▲ Lightweight & vibration damping
Hitachi-specific compatibility		▼ Limited torque (3500 Nm)
Shorter warranty vs industry (12mo standard)
Rigid Metal CouplingsHigh-torque machinery, industrial gearsSteel (ASTM A36)
5000 psi rating (ISO 1076)
12-month warranty		▲ High torque capacity
Durable under heavy loads		No flexibility
Requires precise alignment
Heavy weight
Universal JointsSteering systems, angular motion devicesCarbon steel (ASTM A36)
2500 psi (ISO 1076)
1-year warranty		▲ Angular movement capabilityWear over time
Higher maintenance needs
Fluid CouplingsEngine power transmission, pumpsOil-filled (SAE J1101)
3000 psi (ISO 1076)
18-month warranty		▲ Smooth power transfer
Shock absorption		Complex design
Fluid maintenance required
Gear CouplingsHeavy-duty misalignment applicationsCarbon steel gears (ISO 6336)
4000 psi (ISO 1076)
2-year warranty		▲ Handles misalignment
High load capacity		Requires lubrication
Noisy operation
Rubber-Powered CouplingsLight machinery, agricultural equipmentEPDM rubber (ASTM D1418)
2000 psi (ISO 1076)
12-month warranty		▲ Cost-effective & quiet
Corrosion resistance		▼ Lower load capacity
Shorter lifespan (vs metal)

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