The GRACO 562858 MLS Series™ Mechanical Pump (RMLS-50) is a compact, robust mechanical pump designed for automatic lubrication of machinery. It is constructed from durable materials suitable for industrial environments and is intended to use machine motion as its power source, providing reliable lubrication without the need for external power.

Key Features:

• Mechanical Lube Pump
• RMLS-50
• Output ranges from 0.020 to 0.050 cu. in. per stroke
• Max working pressure: 20.7 MPa
• Designed for use with machinery where machine motion can be used as the power source for the pump
• Compact and simple design
• Direct mechanical action transmitted to pump piston
• Reliable for automatic lubrication
• Easy to maintain
• Suitable for harsh industrial environments

Applications:
Automatic lubrication of machinery in industrial, manufacturing, and processing environments where machine motion is available as a power source.

Installation Notes:

• Using genuine GRACO parts ensures optimal performance, reliability, and compatibility with existing systems.
• Oil reservoirs must be mounted above the pump inlet
• Grease reservoir-to-pump lines should be 1/2” or 5/8” OD tubing, two feet or less in length, with as few bends as possible
• 3/8” OD tubing is suitable for oil reservoir-to-pump connections
• Spring-loaded grease reservoirs may be mounted slightly below the pump if necessary
• Ensure piston sleeve o-rings provide a good seal to prevent leaks and maintain efficiency
• Regularly check and replace o-rings as needed
• Inspect for leaks at the drive end of the pump
• Keep reservoir-to-pump lines as short and straight as possible
• Follow manufacturer’s guidelines for lubrication intervals