The GRACO 258262 HP-50 Lubricator is a high-pressure, multi-pump lubrication system designed for injecting lubricants or compatible fluids into industrial equipment. It features a robust cast iron reservoir and cover, hardened alloy steel cylinders and plungers, and is intended for use in demanding environments such as compressor and circulator cylinder walls, heavily loaded bearings, and other moving parts.

Key Features:

• High-pressure, multi-pump lubricator
• HP-50 with 4 pumps
• Heavily ribbed cast iron reservoir and cover; hardened alloy steel cylinder, plunger, valves, valve seats, and driveshaft; bronze bushed bearings; forged steel regulating lever
• Maximum working pressure: 50,000 psi (344 MPa, 3,447 bar)
• Oil and compatible fluids; suitable for NLGI #000 to NLGI #2 greases
• Single plunger force feed design for efficient injection
• All working parts are totally enclosed and self-lubricated
• Individual pumping units easily removed for service
• Feed rate infinitely variable from minimum to maximum with simple hand adjustment
• Low level and shaft rotation alarm (model dependent)
• Vacuum sight feeds on self-contained pumping units show output to individual lubrication points
• High reliability and long service life
• Minimum drive speed: 3 RPM
• Minimum fluid viscosity: 100 SUS

Applications:
Used for lubricating compressor and circulator cylinder walls, heavily loaded bearings, and other moving parts in industrial machinery.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of the lubrication system.
• Ensure proper alignment and secure mounting of the lubricator
• Connect to appropriate power and lubrication lines as specified in the manual
• Check for leaks and proper operation after installation
• Regularly inspect and maintain the system according to manufacturer guidelines
• Use only compatible lubricants and fluids as recommended
• Monitor lubricant levels and refill as needed
• Inspect and clean sight feeds and pumping units regularly
• Replace worn or damaged components promptly
• Follow the manufacturer’s maintenance schedule