SKF
Progressive Lubrication Systems
Progressive lubrication systems deliver a precise, sequential volume of grease or oil to multiple points using a single supply line and a series of progressive distributor blocks. Each block contains pistons that operate in a predetermined sequence; lubricant flows to the next point only after the previous one has discharged. This provides inherent positive monitoring — a cycle switch or proximity sensor on one distributor piston verifies that the entire system has cycled. Progressive systems are compact, precise, and ideal for machinery with moderate point counts (20-100) where space is limited, such as injection moulding machines, printing presses, and automated assembly lines. SKF progressive systems can operate with grease up to NLGI 2 and are available with electric, pneumatic, or hydraulic pump drives. The surety of sequential, verifiable delivery makes them a popular choice for production-critical equipment.
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Trusted by Industry Leaders
Sequential Positive Displacement
Each point receives its dose in sequence, verifiable at one location.
Compact Distributor Design
Fits into tight machine envelopes.
Built-In Monitoring
Single cycle switch confirms all points have been served.
Grease and Oil Compatible
Works with fluids ranging from thin oil to heavy grease.
Modular and Expandable
Add distributors as machine lubrication needs grow.
Cost-Effective for Medium Complexity
Lower pipework cost than multi-line, simpler than dual-line.
Progressive Systems in Plastic Injection Moulding Machines
Moulding machines require reliable lubrication of platen bushings, toggle linkages, and ejector pins with high-frequency cycles. A progressive system connected to the machine controller lubricates during each cycle, ensuring no dry pin wear and maintaining mould alignment accuracy for thousands of shots.
Troubleshooting Progressive Distributor Blockages
If one outlet becomes blocked, the entire distributor stalls, and the cycle sensor stops registering. This positive failure mode is a key safety feature — it prevents the machine from continuing to run unlubricated. Maintenance can then isolate and clear the blocked line before restarting.