SKF
Multi-Line Lubrication Systems
Multi-line lubrication systems utilise a central pump with multiple independent pumping elements, each delivering lubricant directly through a dedicated line to a single lubrication point. This architecture provides absolute certainty of delivery — each point has its own pump element and pipe — making it ideal for very critical, expensive machinery where lubrication failure is unacceptable. Multi-line systems are common on large diesel engines, compressors, and key process machines. SKF supplies multi-line pumps with adjustable stroke and output, and integrated monitoring. The systems can be driven mechanically by the host machine or electrically. They excel in applications with fewer points (typically up to 30) but extreme reliability requirements. The simplicity of having no downstream distributors reduces potential failure points, making it the most robust but also most piping-intensive automated lubrication method.
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Dedicated Pump Element per Point
Guaranteed delivery, no distributor reliance.
Adjustable Output per Line
Fine-tuning for each bearing’s specific lubricant requirement.
Mechanical or Electric Drive
Can be coupled to machine motion for fully automatic, operation-synchronised lubrication.
Extreme Reliability
Minimal components, ideal for compressor and engine cylinders.
Continuous and Intermittent Operation
Works while machine is running or on a timer.
No Downstream Blockages
Single, clear pipe path for each lubricant dose.
Multi-Line Lubrication on Process Gas Compressors
Large reciprocating compressors in gas processing plants use multi-line systems to force-feed oil to the compressor cylinders and rod packings. The reliability of an individual plunger per point ensures that no cylinder runs dry, preventing catastrophic compressor failure and flammable gas release.
Pump Sizing for Multi-Line Lubrication
The pump’s number of elements must equal the lubrication points. SKF multi-line pump units are modular, allowing elements to be added. Output per stroke is set mechanically. The total pump flow and reservoir size are matched to the consumption rates of all connected points, ensuring buffer capacity between refills.