The GRACO LM5521 Lubemaster Pump is a robust, motor-driven lubrication pump designed for automatic delivery of grease or oil in demanding industrial environments. Constructed with durable materials for long-lasting performance, it is intended for use in applications requiring reliable, continuous, or time-controlled lubrication cycles, such as mills, crushers, presses, conveyors, and shears.

Key Features:

• Electric grease & oil pump
• LM5521
• Rugged, compact, totally enclosed pumping unit
• Output per stroke: 0.010–0.050 in³ (0.16399–0.8195 cm³); Output range: 0.010–0.862 in³ (0.1619–143.41 cm³) per minute (depending on cycle rate and gear ratio)
• Max operating pressure: 5,000 psi (340 bar)
• Compatible with Series Flo or reversing systems; replacement for Trabon Model AKA, PME, and MP Pumps
• Explosion proof: Class I, Group C and D; Class II, Group E, F and G (LOH Low Level Option only)
• Long-lasting, reliable performance in harsh environments
• Configurable for various applications
• Can be wall or floor mounted
• Simplified maintenance and anti-friction drive bearings
• Output manifold with four 1/4" NPSF ports for flexible plumbing
• Pressure gauge included in complete assemblies (sold separately if ordered as individual components)
• Relief valve port for safety (relief valve sold separately)

Applications:
Suitable for mills, mill tables, crushers, presses of all sizes, conveyors, shears, and other industrial machinery requiring automatic lubrication.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and safety in demanding industrial environments.
• Can be wall or floor mounted for flexible installation
• Ensure proper alignment and secure mounting to prevent vibration and misalignment
• Connect output manifold to lubrication points using appropriate fittings
• Install pressure gauge and relief valve for safe operation (if not included in assembly)
• Follow manufacturer’s guidelines for electrical and mechanical connections
• Regularly inspect for leaks, wear, and proper operation
• Lubricate moving parts as recommended
• Check and replace seals and bearings as needed
• Monitor pressure and output to ensure consistent lubrication