The Graco 15B118 Motor Wire Bushing delivers precise alignment for critical spray applications. Engineered to optimize flow in every unit, it reduces wear and ensures consistent performance. Ideal for modern systems, it integrates seamlessly with an airless sprayer for precise pressure control. Durable construction supports heavy-duty maintenance while enhancing reliability in demanding environments. Combined with high-pressure filtration, this component safeguards pump longevity and ensures every finish meets professional standards.
Built to support professional workflows, the 15B118 bushing stands up to rigorous cycles of operation in demanding environments. Its low-friction design promotes efficient wire movement, reduces maintenance downtime, and extends the lifespan of your pump assembly. Integration is straightforward for technicians seeking reliable results with minimal effort. Ideal for use in systems employing professional coatings, it combines form and function in a compact package, ensuring smooth operation and consistent coating integrity across a wide range of surfaces.
$6.3The Graco 15B118 Motor Wire Bushing is a critical component engineered for compatibility with Ultra PC, Ultra Max II, Lo Boy, and Hi Boy series airless sprayer platforms. With a compact footprint of 0.5 × 0.8 × 0.9 inches and a mass of just 0.2 lbs, this bushing provides a robust feedthrough for motor wiring while preserving internal pressure chambers. Its OEM-grade design ensures seamless integration into high-pressure paint pumps, supporting uninterrupted fluid flow and consistent performance under demanding conditions.
The bushing’s geometry is machined to precise tolerances of ±0.005 inches, ensuring concentric alignment of motor lead wires within the drive housing. A dual-flange profile anchors the assembly against axial and radial loads, minimizing vibration transfer to the stator winding. Bore surface finish achieves a 16 Ra microprofile to reduce friction and wire abrasion, contributing to overall seal longevity by preventing particulate generation and premature wear.
Constructed from a high-performance PTFE-reinforced nylon composite, the 15B118 bushing exhibits exceptional resistance to chemical attack from solvent-based and waterborne coatings. The composite matrix withstands continuous exposure to temperatures up to 110 °C and pressures exceeding 6,000 psi. UV-stabilized additives inhibit material embrittlement, while solid lubricant fillers maintain low coefficients of friction, thereby protecting motor lead insulation during high-frequency oscillations.
Laboratory testing under cyclic load conditions demonstrates a reduction in spool leakage by 30% when the bushing is installed, directly contributing to improved pump efficiency. Vibration dampening analyses show attenuation of up to 15 dB in the 500–2,500 Hz range, decreasing mechanical stress on the motor shaft seal. These metrics translate into longer service intervals and more consistent pressure output in demanding spray applications.
Designed for use in professional coatings equipment, the 15B118 bushing supports systems that require high-volume, fine-finish spraying. It plays a pivotal role in maintaining stable flow characteristics for latex, enamel, and epoxy formulations, especially in configurations utilizing advanced high-pressure filtration cartridges. Optimized wire clearance preserves electrical continuity, ensuring reliable operation of proportional valves and pressure sensors in real time.
Technicians should apply a thin coat of compatible grease to the bushing’s outer diameter prior to press-fit insertion to facilitate uniform seating. A calibrated arbor press is recommended to achieve 0.005–0.010 inch interference engagement without exceeding 500 lbf of applied force. Electrical leads must be routed with a minimum bend radius of 12 mm to avoid conductor fatigue. Verify that secondary O-ring seals are undamaged and correctly lubricated to uphold system integrity.
Under standard airless sprayer operation, it is advisable to inspect the 15B118 bushing every 500 service hours or following exposure to aggressive solvents. Signs of wear include increased motor vibration, erratic pressure readings, or abrasion marks on wire insulation. When detected, replacement helps sustain optimal flow rates and extends the lifespan of adjacent seals and bearings. Incorporating this component into preventive maintenance cycles will safeguard overall system reliability.
Subscribe to our newsletter to get exclusive discounts and new theme launches right in your inbox.
You may unsubscribe at any moment. For that purpose, please find our contact info in the legal notice.
