527-003-250 Inductive Proximity Switch with NSN 5930-01-279-0596

Product Overview

The GRACO LUBRIQUIP 527-003-250 is a specialized inductive proximity switch engineered to serve as a critical feedback element in centralized automatic lubrication systems. Manufactured by Graco Inc. under its renowned Lubriquip brand, the 527-003-250 provides non-contact position detection for metallic components, typically monitoring the reciprocating motion of pistons within progressive dividers or single-line injectors -1-2. This precise sensing capability allows control systems to verify that lubricant has been successfully dispensed to critical bearing points, thereby transforming a passive lubrication routine into an active, monitored, and intelligent asset protection strategy.

At its core, the GRACO LUBRIQUIP 527-003-250 is built for reliability in environments saturated with grease, oil, and industrial debris. The module typically features a rugged stainless steel or plated brass housing, offering IP67 environmental protection against dust and temporary immersion -1-4. Its physical design is tailored for direct integration into the Graco Lubriquip product ecosystem, ensuring compatibility with the mounting interfaces of specific manifold blocks. By generating a distinct electrical pulse for every complete cycle of the lubrication pump or divider, the 527-003-250 provides indispensable real-time data to a PLC or DCS, enabling condition monitoring, alarm generation for blockages, and precise calculation of lubricant consumption. This component represents the bridge between mechanical lubrication hardware and digital process control, making it an indispensable tool for modern predictive maintenance.