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Graco 117745 Strain Relief Bushing

Graco 117745 Strain Relief Bushing for Enhanced Hose Protection

The Graco 117745 Strain Relief Bushing is engineered to provide reliable support to hose assemblies on demanding coating projects. Expertly crafted for compatibility with high-performance spray equipment, it ensures secure hose connections and prevents kinking during operation. Ideal for professional contractors, this precision component maintains consistent pressure and extends hose life under continuous use. Compatible with a broad range of pump systems, it boosts workflow efficiency and reduces maintenance downtime when used with an airless sprayer.

  • Dimension: 2.4" H x 2.4" L x 2.4" W
  • Durable industrial-grade nitrile construction
  • Simple push-fit installation, no tools required

Constructed from industrial-grade materials, the Graco 117745 Bushing offers exceptional resistance against abrasion, chemical exposure, and heat, ensuring long-term durability in rugged environments. Its precision-fit design and strain relief mechanism stabilize hose angles for smooth material flow at high volumes. Quick to install and compatible with top-tier seal kits, it enhances operation with minimal downtime. Perfect for heavy-duty line setups requiring professional coatings handling and supports efficient high-pressure filtration processes onsite.

$8.87

Technical Overview: Graco 117745 Strain Relief Bushing for High-Performance Fluid Delivery Systems

The Graco 117745 Strain Relief Bushing serves as a critical component in advanced fluid handling assemblies, ensuring reliable mechanical support and precise electrical cord management in heavy-duty spray equipment. Engineered to integrate seamlessly with inline cable assemblies, it offers enhanced durability for continuous operation in diaphragm and piston-driven systems, handling fluid viscosities from 50 to 5000 cP. This bushing is optimized for protecting cable jackets against dynamic flexing and vibration in industrial finishing applications, particularly suited to airless sprayer platforms. It delivers a robust barrier that maintains conductor integrity under cyclic loading, significantly reducing maintenance intervals and downtime. The low-profile geometry and precise tolerances allow installation in confined bodies, where regulatory compliance with cable bend radius specifications is mandatory.

  • Dimensions: 2.4 in (6.096 cm) height, length, and width for uniform volumetric footprint.
  • Material: High-strength thermoplastic elastomer resistant to solvents and temperature extremes.
  • Volume: 0.01 ft³; Weight: 0.1 lbs, minimizing added mass on dynamic lines.

Material selection is central to the strain relief function. The bushing employs an advanced TPE blend formulated for optimum chemical resistance, abrasion prevention, and tensile elongation. Its dual-hardness design incorporates a pliable inner diaphragm to envelop cable sheaths while maintaining a rigid outer shell for installation stability. Shore A hardness ranges from 45 to 60, with UV and ozone resistance to withstand prolonged exposure. This configuration addresses the unique demands of high-viscosity coatings and solvents used in professional coatings applications, ensuring that harsh chemicals do not compromise the mechanical sealing interface. The geometry of the radial ribs enhances grip on cable jackets without exceeding material yield strength, thus avoiding premature cracking or deformation during repeated equipment cycles.

Performance metrics of the Graco 117745 are validated through rigorous bench testing against industry standards. It withstands tensile loads exceeding 50 lbf before disengagement and endures temperature cycles from -40 °F to 200 °F without loss of sealing efficacy. The component supports ambient pressure differentials up to 15 psi, aligning with the dynamic pressure spikes found in high-pressure pump systems to preserve consistent pump efficiency and prevent fluid backflow along wiring channels. Compression set is tested per ASTM D395 and D1484, confirming less than 5% set after extended load; cyclic fatigue assessments verify retention of 95% clamping force after 10,000 flex cycles. EPDM and fluoropolymer-compatible variants offer extended service in chemical-intensive environments, directly contributing to enhanced seal longevity and reduced unscheduled maintenance.

Design Integration and Usage Insights

Installation of the Graco 117745 follows standard protocol for cable entry points. The bushing is oriented flush to housing walls, with the locking collar nested into corresponding panel cutouts to achieve torque-free mounting. Field technicians should verify that conductor diameters fall within the specified 14–24 AWG range to maintain rated strain relief performance. Compatibility with high-density cable bundles is facilitated through the elastic diaphragm, which automatically adjusts to cable groupings while preserving individual conductor insulation. This functional adaptability simplifies retrofitting into existing systems and underscores its role in maintaining uninterrupted operation in both new builds and refurbishment projects across pump and manifold assemblies supporting 120 VAC and 24 VDC circuits.

Incorporation into fluid delivery circuits with high-pressure filtration modules underscores its versatility. The Graco 117745 supports integration with cartridge and spin-on filters by protecting sensor wiring and control cables proximal to filter housings. By mitigating mechanical stresses on electrical harnesses, it prevents false readings and sensor drift caused by loose connections. Routine inspection intervals should align with filter changes to ensure the diaphragm remains free of particulate buildup, thereby extending seal longevity and safeguarding overall system reliability. Its compact form factor also facilitates installation in confined manifolds without impeding fluid channels or obstructing maintenance access.

Maintenance and Technical Recommendations

To maximize service life, periodic visual inspections are recommended to detect abrasion marks, tears, or chemical swelling. Clean the bushing exterior with isopropyl alcohol to remove residual coatings or particulates. If damage is evident, replace the component immediately to prevent cable overstrain. Graco’s engineering guidelines specify collar torque settings of 1.2–1.5 Nm and recommend inspection every 1,000 operational hours. Aligning replacement cycles with major pump and manifold overhauls ensures uninterrupted fluid delivery and protection for sensitive electrical connections in critical production environments.

In summary, the Graco 117745 Strain Relief Bushing exemplifies precision-engineered cable management for rigorous industrial finishing operations. Its robust material composition, validated performance metrics, and streamlined design integration align with the demands of modern airless sprayer platforms and pump systems. By prioritizing strain mitigation and environmental sealing, it delivers a reliable solution that upholds pump efficiency, supports professional coatings applications, and contributes to extended seal longevity across a spectrum of high-performance fluid handling systems.

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