Centralized Grease Lubrication System |
Introduction:
Centralized grease lubrication systems are widely used in industrial and heavy-duty mobile equipment appilications to lubricate multiple points on a machine.These systems range from a simple single-port lubricator to complex dual-line, reversing units employing timers and alarms to deliver grease reliably to hundreds of grease points.
The design parameters of centralized grease systems include the volume and frequency of grease required at each point, the number of points requiring grease, operating conditions, pump pressure , line diameter and distance to the grease points. When used and maintained properly, centralized grease systems can help enhance technician productivity and simplify equipment maintenance processes. The following comprehensive overview of centralized grease lubrication systems and the benefits they offer, the various types, concerns to watch out for and tips on how to maintain them properly.
Advantages:
Centralized grease systems are designed principally to make the work environment safer for maintenance personel by simplifying the process of accessing remote grease points, especially in confined spaces, when equipment is in operation. However, the primary benefit is derived from the continuous application of small amounts of grease resulting in improved equipment life, due to the uniform supply of grease.
It is important for maintenance professionals to realize that many centralized grease systems have long lines, precise metering valves, fittings and numerous connections that can malfunction due to vibration, air entrainment and other environmental impacts. Thus, carefully monitoring and maintaining the systems on a consistent basis is critical.
Dual Line System:
The dual or two-line systems, uses two supply lines to provide grease to the injectors. A four-way Solenoid valve is used to direct grease alternately to each of the grease lines while relieving pressure on the other line. The second line provides a safety margin but involves additional cost and complexity related to installation.
Construction:- Reservoir: Reservoir provides a bulk quantity of grease that can be kept clean and readily available to the system.
- Pump: Produces the flow of grease and builds up pressure in the line(s). Pump size will vary depending on the distance between the pump and the farthest injector.
- Controller: Manages the pressure on the system by turning pressure supply valves on and off on the basis of either time or cycle. It can also receive signals indicating restricted or failed grease flow to the bearing.
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