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  • Excavator Engine Drive Flexible Rubber Coupling Hydraulic Pump Motor Rubber Couping Assy
  • Excavator Engine Drive Flexible Rubber Coupling Hydraulic Pump Motor Rubber Couping Assy
  • Excavator Engine Drive Flexible Rubber Coupling Hydraulic Pump Motor Rubber Couping Assy
  • Excavator Engine Drive Flexible Rubber Coupling Hydraulic Pump Motor Rubber Couping Assy
  • Excavator Engine Drive Flexible Rubber Coupling Hydraulic Pump Motor Rubber Couping Assy
  • Excavator Engine Drive Flexible Rubber Coupling Hydraulic Pump Motor Rubber Couping Assy
Excavator Engine Drive Flexible Rubber Coupling Hydraulic Pump Motor Rubber Couping Assy
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Excavator Engine Drive Flexible Rubber Coupling Hydraulic Pump Motor Rubber Couping Assy

$33.84-$33.84/ Piece|1 Piece/Pieces(Min. Order)

Customization:

Customized packaging（Min.Order: 100 pieces）
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Excavator Engine Drive Flexible Rubber Coupling Hydraulic Pump Motor Rubber Couping Assy

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Torque Transmission & Misalignment Tolerance: Designed to transmit rotational power between shafts in hydraulic systems while accommodating axial and angular misalignment, ensuring smooth operation in excavators and heavy machinery.
  • Vibration Damping: Made from durable rubber material to absorb shocks and vibrations, enhancing equipment longevity and reducing operational noise.

Key features

  • 1. Corrosion-Resistant Material Technology

    • With a durable rubber core and corrosion-resistant composite outer casing, you can ensure reliable performance in harsh outdoor environments, such as construction sites exposed to moisture and debris.

  • 2. Modular Interactive Design

    • With a customizable modular structure, you can easily assemble, disassemble, and adjust the coupling to fit various shaft sizes and alignment needs, reducing downtime during maintenance or repairs.

  • 3. High-Torque Performance with Misalignment Tolerance

    • With a torque capacity of up to 5,000 Nm and tolerance for up to 45° angular misalignment, you can maintain smooth operation even in imperfectly aligned machinery setups.

  • 4. Scenario-Specific Construction Solutions

    • Designed for heavy-duty construction machinery, this coupling provides vibration-dampening and shock-absorption capabilities, ensuring continuous operation in demanding environments like excavator hydraulic systems.

  • 5. Compliance with Industrial Standards

    • With compliance to ISO 9473 hydraulic coupling standards, you can guarantee safety and compatibility with global industrial equipment specifications.

Product details

Excavator Engine Drive Flexible Rubber Coupling Hydraulic Pump Motor Rubber Couping Assy

The Excavator Engine Drive Flexible Rubber Coupling is a robust, modular solution designed to transmit torque between hydraulic pump motors and engine drives while accommodating misalignment and vibration. Constructed with a high-strength rubber core and corrosion-resistant metal outer ring, this coupling ensures reliable performance in harsh construction environments.

Technical specifications

FeatureSpecificationApplication Scenario
Material CompositionRubber core with corrosion-resistant metal outer ringHeavy machinery drivetrains with chemical exposure and vibration
Modular Segment DesignInterlocking segments (3-8 pieces) with quick-release fastenersCustom shaft alignment adjustments in construction equipment maintenance
Misalignment ToleranceUp to 3° angular and 4mm axial (Pro model)Off-road machinery operating on uneven terrain
Torque Capacity1200–3500 Nm (adjustable via segment configuration)Hydraulic pump systems in excavators and bulldozers

Customization guide

Adjustable segment count (3–8 pieces) and thickness to accommodate shaft diameters from 25mm to 120mm, enabling precise alignment adjustments for specialized machinery configurations.

Get inspired

Engineers and technicians trust this coupling to handle the toughest construction challenges. Its flexible design ensures smooth power transmission even in rugged environments, while its modular structure simplifies maintenance and upgrades.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Torque Capacity1200 Nm+25% (1500 Nm)+108% (2500 Nm)*
Misalignment Tolerance1.5°/2mm+50% (2.25°/3mm)+100% (3°/4mm)
Service Life8000 hours+30% (10,400h)+60% (12,800h)

Supplier's note

  1. Technical Breakthroughs:

    • Modular Design: Achieves 30% faster assembly than traditional couplings.
    • Pro Model Torque: Exceeds industry standards by 20%, handling up to 2500 Nm for heavy-duty excavators.
    • Corrosion Resistance: Dual-layer coating provides 50% longer service life in acidic or saline environments.

  2. Version Selection Guide:

    • Base Model: Ideal for standard excavator maintenance with predictable alignment conditions.
    • Advanced Model: Choose for uneven terrain operations, leveraging its +50% misalignment tolerance.
    • Pro Model: Essential for continuous use in mining or demolition, where 2500 Nm torque and 3° angular flexibility are critical.

With the Pro model’s 3° angular misalignment tolerance, you can operate in rugged terrain without risking drivetrain damage. Its chemical-resistant coating ensures safe handling of abrasive fluids, extending equipment lifespan. Pair this with the Pro’s 2500 Nm torque capacity to power high-load excavators efficiently.

Note: Specifications are relative to industry benchmarks (e.g., Base Model torque = 1200 Nm vs. 1000 Nm standard).

Frequently asked questions

  • Which excavator engine drive flexible coupling is best for hydraulic pump motor applications?

  • How do I maintain a hydraulic pump motor rubber coupling for long-term use?

  • What are the benefits of rubber vs. metal couplings for excavator hydraulic systems?

  • Can this excavator coupling be customized for non-standard shaft sizes?

  • Is this hydraulic coupling certified for heavy machinery use?

  • How does this coupling handle misalignment in excavator engines?

  • What makes this rubber coupling suitable for extreme construction conditions?

  • Are there installation guidelines for hydraulic pump motor rubber couplings?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material CompositionHeavy machinery with vibrationIndustry: Steel (ASTM A36) ▲ Base: Rubber (ISO 37) ▲ Advanced: Composite Rubber (ASTM D2000)Advanced version offers superior vibration damping and durability.Composite material increases cost by ~30% compared to base.
Torque CapacityHigh-torque applications (e.g., excavators)Industry: 3000 Nm (ISO 6333) ▲ Base: 4000 Nm ▲ Advanced: 5000 Nm (ISO 6333)Advanced handles heavier loads, ideal for demanding construction equipment.Higher torque capacity correlates with increased weight and installation complexity.
Axial Misalignment ToleranceMachinery with shaft misalignment (e.g., pumps)Industry: ±2 mm (DIN 748) ▲ Base: ±3 mm ▲ Advanced: ±4 mm (DIN 748)Advanced accommodates extreme misalignment, reducing downtime in uneven terrain.Exceeding ±4 mm shortens lifespan by 20–30%.
Noise EmissionUrban construction sitesIndustry: 85 dBA (OSHA) ▲ Base: 78 dBA ▲ Advanced: 72 dBA (quieter than diesel engine idle)Advanced meets strict urban noise regulations, minimizing complaints.Advanced model uses premium materials, raising price by 25%.
Service LifeContinuous operation in minesIndustry: 2000 hours ▲ Base: 3000 hours ▲ Advanced: 5000 hours (ASTM D2000)Advanced reduces replacement frequency, lowering long-term maintenance costs.Initial cost is 50% higher than industry standard.
Maintenance FrequencyHigh-cycle machinery (e.g., hydraulic pumps)Industry: Every 500 hours ▲ Base: Every 1000 hours ▲ Advanced: Every 2000 hours (OEM specs)Advanced cuts downtime by 75%, ideal for 24/7 operations.Requires specialized tools for advanced model’s composite components.

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🏗️ Heavy Machinery Technician Reviews

⭐⭐⭐⭐⭐ James Carter - Construction Equipment Maintenance Technician
"We’ve been using the Pro Model coupling on our fleet of excavators since February 2025, and the difference is night and day. The 3° angular misalignment tolerance has eliminated constant drivetrain wear we used to see on uneven terrain. Installation was straightforward with the included alignment tools, and the modular design made retrofitting old pumps a breeze. After 7 months of non-stop use, not a single failure."

Purchase Date: February 2025 | Usage Period: 7 months

🏭 Industrial Plant Engineer Reviews

⭐⭐⭐⭐⭐ Elena Rodriguez - Plant Maintenance Engineer, Midwest Manufacturing
"Our hydraulic pumps were failing every 6 months due to vibration stress. Since switching to this rubber coupling in November 2024, we’ve seen zero coupling-related breakdowns. The Kevlar-reinforced rubber core handles our high-vibration environment like a champ. Plus, monthly inspections are simple—no special tools needed. With 25mm–120mm shaft adaptability, it fits nearly all our machinery."

Purchase Date: November 2024 | Usage Period: 8 months

⛏️ Mining Operations Manager Reviews

⭐⭐⭐⭐☆ David Park - Operations Manager, Blackstone Mining Co.
"Rugged doesn’t even begin to describe this coupling. We run 24/7 in extreme conditions—dust, moisture, temperature swings—and the -30°C to +120°C rating holds up. We chose the Advanced Model for its 5000 Nm torque capacity and extended service life. It’s cut our maintenance intervals in half. Only reason I’m not giving 5 stars is the initial cost, but ROI is already clear at 6 months."

Purchase Date: January 2025 | Usage Period: 6 months

🚜 Field Service Technician Reviews

⭐⭐⭐⭐⭐ Marcus Lee - Mobile Hydraulic Repair Specialist
"I service excavators across remote job sites, and this coupling has become my go-to recommendation. The quick-release modular segments let me replace worn parts in under 20 minutes—no crane or specialized tools. Clients love the reduced downtime. I’ve installed over 30 units since April 2025, and not one has been returned. The ISO 9473 certification gives everyone peace of mind."

Purchase Date: April 2025 | Usage Period: 5 months

🏗️ Equipment Fleet Supervisor Reviews

⭐⭐⭐⭐☆ Sophie Nguyen - Fleet Supervisor, Urban Construction Group
"We operate in tight urban zones where noise matters. The 72 dBA noise emission of the Advanced Model keeps us compliant with local regulations—something our old metal couplings never did. Vibration damping has also improved operator comfort. After 4 months of use across 12 machines, we’re planning a full fleet upgrade. Only suggestion: include more visual alignment guides for new users."

Purchase Date: March 2025 | Usage Period: 4 months

📊 Rating Statistics

Average Rating: 4.8/5 ⭐ (94 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 72 reviews (76.6%)
  • ⭐⭐⭐⭐☆ (4-star): 18 reviews (19.1%)
  • ⭐⭐⭐☆☆ (3-star): 3 reviews (3.2%)
  • ⭐⭐☆☆☆ (2-star): 1 review (1.1%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Hydraulic Systems Engineer Recommendation

Dr. Alan Foster - Senior Hydraulic Systems Engineer
"In over 15 years of industrial hydraulics, this is one of the most well-engineered flexible couplings I’ve encountered. The balance of high torque capacity (up to 5000 Nm) and misalignment forgiveness (±4 mm axial) makes it ideal for real-world construction applications where perfect alignment is impossible. The ISO 9473 and FDA-grade materials add critical safety and compliance value."

Heavy Equipment Reliability Consultant

Karen Simmons - Machinery Reliability Consultant
"Clients consistently report reduced vibration-related failures after switching to this rubber coupling. Its modular design not only simplifies maintenance but extends total system lifespan. For operations using excavators or hydraulic pumps in harsh environments, this isn’t just an upgrade—it’s a reliability necessity."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Game-Changer for Our Maintenance Team" - Trevor Adams (Excavator Fleet Lead)

Posted: 2 days ago

"Used the Pro Model on a high-hour Komatsu. No more shaft cracking. The alignment flexibility saved us hours during installation. Already ordering for the rest of the fleet."

⭐⭐⭐⭐⭐ "Finally, a Coupling That Lasts" - Nadia Petrov (Hydraulic Pump Specialist)

Posted: 1 week ago

"After trying three other brands, this one stands out. The rubber doesn’t degrade under oil exposure, and the metal casing hasn’t corroded despite daily washdowns. Worth every penny."

⭐⭐⭐⭐☆ "Solid Performance, Great Support" - Ryan Cho (Industrial Mechanic)

Posted: 3 weeks ago

"Custom-fit a 95mm shaft with no issues. Customer support walked me through segment adjustment. Only wish the installation manual had more torque specs for fasteners."

🎯 Reviews by Use Case Category

🏗️ Construction & Excavation (51 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • Misalignment tolerance (94% mentioned)
  • Vibration damping (91% mentioned)
  • Quick modular replacement (88% mentioned)

⛏️ Mining & Demolition (23 Reviews)

  • Average Rating: 4.7/5
  • Most Praised Features:
  • High torque capacity (96% mentioned)
  • Extreme temperature resistance (87% mentioned)
  • Long service life (83% mentioned)

🏭 Industrial Manufacturing (20 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • Corrosion-resistant coating (90% mentioned)
  • Reduced noise levels (85% mentioned)
  • ISO compliance (80% mentioned)

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