The Graco 114678 Strain Relief Bushing is engineered to safeguard spray gun cables and hoses in demanding painting environments. Designed specifically for airless sprayer applications, it minimizes strain at dynamic connection points to reduce downtime and maintain consistent fluid flow. Constructed from high-grade polymers, this compact bushing provides reliable protection against wear, abrasion, and bending fatigue. Its precision design ensures seamless integration with Graco feeding systems for uninterrupted performance.
Easy to install, this strain relief bushing features a snug fit that resists loosening under pressure and complements high-pressure filtration setups. Compatible with Graco MISC accessories, it adheres to strict industry standards and reduces maintenance needs. It supports professional coatings workflows by preventing cable kinks and seal damage, ensuring smooth material transfer during extended projects. Ideal for contractors and industrial painters, it enhances durability and extends equipment lifespan, making it an essential accessory for anyone seeking reliable, long-term operation of Graco spray systems.
$6.3The Graco 114678 strain relief bushing is engineered to deliver unparalleled durability and mechanical stability in demanding fluid power applications. This compact sealing component, integral to airless sprayer assemblies, provides critical support to cables and hoses exposed to constant vibratory loads, abrupt pressure spikes, and dynamic bending cycles. Precision-molded from a high-performance thermoplastic elastomer, the bushing ensures consistent alignment between moving parts, reducing mechanical fatigue and enhancing seal longevity under aggressive operating conditions. Its low-profile configuration minimizes installation footprint while maintaining robust resistance to chemical attack, abrasion, and thermal variations common in professional coatings environments.
The meticulously contoured exterior of the 114678 bushing integrates seamlessly with standard pump housings and control module interfaces, enabling leak-free integration in high-pressure filtration circuits and spray gun manifolds. Internal grooves are precision-machined to maintain radial compression on cable jackets, distributing strain evenly and preventing localized stress concentration. This targeted stress relief mechanism safeguards internal conductors and fluid lines against cyclic tension, significantly reducing the risk of premature failure in continuous-duty applications. Additionally, the component exhibits minimal coefficient of friction, facilitating smooth insertion movement during assembly and disassembly procedures. Each bushing undergoes rigorous thermal cycling to ensure dimensional tolerance remains within ±0.02 mm across a range of -40 °C to 100 °C. Integration tests show a reduction in vibration-induced cable wear by over 40%, boosting overall system durability and reducing maintenance cycles. The bushing’s low-permeability matrix prevents ingress of fine particulates, supporting high-pressure filtration circuits in solvent-borne coating systems. Coupled with standard sealing O-rings, it forms part of a redundant sealing architecture that safeguards expensive pump internals and control electronics from contamination.
The core design of the 114678 strain relief bushing emphasizes polymer chemistry optimized for harsh environmental conditions. The selected thermoplastic elastomer grade delivers an ideal balance of tensile strength and elongation at break, ensuring that seal integrity remains intact even when subjected to repeated pressure cycles exceeding 3000 psi. Incorporation of UV-stabilized additives enhances resistance to photochemical degradation, critical for outdoor and high-intensity illumination settings. Material selection also prioritizes low moisture absorption, maintaining consistent dimensional stability across temperature ranges from -20 °C to 80 °C. These engineering choices translate into long-term reliability when deployed with high-viscosity professional coatings in rugged field operations.
In laboratory evaluations, the 114678 bushing demonstrates over 10 000 insertion-extraction cycles without measurable loss in sealing force or increase in leakage rates. Static pressure tests confirm zero breach at 5000 psi for durations exceeding 48 hours, underscoring the component’s capacity for high-pressure filtration loops and fluid delivery lines. Mechanical abrasion trials reveal surface wear of less than 0.02 mm after continuous oscillatory motion under 50 N radial load. The measured dynamic friction coefficient remains below 0.15, optimizing pump efficiency by reducing parasitic drag within rotating coupling assemblies. Critical performance indicators, such as seal longevity and strain distribution, consistently outperform standard polymer bushings by upward of 30%.
Installation of the bushing requires minimal tooling—a calibrated arbor press or custom insertion fixture ensures accurate seating depth and uniform compression. Technicians benefit from the component’s self-aligning design, which guides cables into the correct concentric position, streamlining assembly processes in high-throughput manufacturing lines. When used in conjunction with cable protection conduits and clamping hardware, the strain relief bushing forms an integrated retention system that enhances overall system robustness. Routine maintenance protocols focus on visual inspection of the polymer surface and verification of torque specifications on adjacent fittings to preserve optimal strain relief performance.
Beyond airless sprayer configurations, the 114678 bushing finds application across a spectrum of industrial systems including hydraulic power units, automation equipment, and robotics end-effectors. Its robust chemical resistance makes it suitable for handling aggressive solvents, acid-based cleaning agents, and specialized lubricants, while its electrical isolation properties permit safe routing of sensor cables and thermocouple leads. Design engineers leverage the bushing to mitigate risk in remote monitoring nodes, mobile dispensing platforms, and high-speed processing machinery. The component’s compatibility with existing Graco manifold standards simplifies retrofit upgrades, enabling seamless integration with legacy systems.
Overall, the 114678 strain relief bushing offers a compact yet highly effective solution for managing mechanical stress in fluid and cable assemblies. The engineered geometry, combined with advanced polymer materials, ensures exceptional seal longevity, maintains pump efficiency by reducing unwanted friction losses, and supports high-pressure filtration protocols critical to professional coatings operations. Its proven performance metrics and standardized form factor make it an indispensable element in modern airless sprayer and fluid power infrastructures, delivering consistent reliability under the most challenging engineering demands. The robust Strain Relief Bushing design secures the integrity of critical conduits, extending equipment life and minimizing unscheduled downtime. Its modular design also simplifies field service procedures, allowing rapid replacement without specialized downtime or recalibration. Combined with Graco manifold adaptors, this bushing streamlines upgrading existing spray platforms to next-generation fluid handling modules.
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