Memolub automatic lubrication systems and automatic grease lubricators

Automatic lubrication systems are a technical solution increasingly used in industrial plants to improve machine reliability, reduce manual interventions, and ensure a more precise distribution of the lubricant.

In many industrial applications, lubrication is still managed manually, with periodic checks, traditional grease nipples, and operator-scheduled interventions. This approach can work in simple contexts, but it becomes less effective when lubrication points are numerous, difficult to reach, subject to contamination, or part of continuous production cycles.

Incorrect lubrication can generate friction, wear, overheating, increased energy consumption, downtime, and a reduction in component life. For this reason, many applications are moving from manual management to automatic lubrication, based on systems, pumps, control units, dispensers, and automatic lubricators capable of delivering the correct amount of grease or oil at the right time.

What are automatic lubrication systems?

Automatic lubrication systems are devices or plants designed to deliver grease or oil in a controlled manner to the lubrication points of a machine. They serve to ensure the correct amount of lubricant, at the right time and at the exact point where it is needed.

Automatic lubrication plants replace or supplement manual lubrication, allowing one or more points of the plant to be supplied with a defined amount of lubricant. The goal is to maintain a constant lubricant film between moving surfaces, reducing friction, wear, and the risk of component damage.

These systems can work with grease or oil, depending on the application, movement speed, loads, temperature, environmental conditions, and the characteristics of the component to be protected.

In technical and commercial language, they are also referred to by terms such as automatic lubricators, automatic grease feeders, automatic lubrication plants, automatic greasing systems, lubrication control units, or centralized lubrication plants. The differences are not just terminological: the architecture, flow rate, pressure, number of points served, control methods, and level of integration with the machine all vary.

How does an automatic lubrication system work?

An automatic lubrication system works by delivering a programmed amount of lubricant to one or more points on the machine. Dosing can occur via cartridge, pump, control unit, distributors, piping, and control devices.

The operating principle of automatic grease feeders is simple: the lubricant is pushed from the reservoir or cartridge toward the lubrication point, according to a defined frequency and amount.

In simpler systems, the automatic lubricator feeds a single point. In more complex systems, a lubrication pump or a lubrication control unit distributes the lubricant to multiple points via lines, fittings, and metering devices.

The operating logic can be set in several ways:

• continuous delivery at regular intervals;
• timed dosing;
• control via power supply (electric automatic grease feeder);
• integration with PLC;
• management via control and monitoring systems;
• use of replaceable cartridges or reservoirs.

The main advantage is the precision of automatic lubricant dosing. A well-sized plant reduces the risk of insufficient lubrication, but also the opposite: excess grease or oil, which can cause waste, contamination, buildup, and operational problems.

What components make up an automatic lubrication plant?

An automatic lubrication plant uses replaceable cartridges, thrust springs, dosing pistons and power supply to distribute the lubricant in a controlled manner. In Memolub systems, these elements allow grease or oil to be sent to critical points such as chains, screws, gears, guides, and bearings.

The main parts can vary based on the model and type of application, but in general, an automatic lubrication system includes:

• replaceable cartridge, available in 120 cm³, 240 cm³, and 480 cm³ formats, containing the lubricant to be delivered;
• compression spring, which contributes to managing the internal thrust on the lubricant;
• expulsion spring, with 10 or 25 bar solutions, allowing the lubricant to be sent to the application point;
• dosing piston lever, which opens the check valve and allows the delivery of the intended amount;
• standard 0.6 cm³ dosing, useful for maintaining controlled and repeatable delivery;
• translucent pump housing, designed to provide visual feedback on system operation;
• 4.5 V batteries, with the option for 24 V external power supply depending on the chosen configuration;
• lubrication points, such as chains, screws, gears, guides, and bearings.

This structure allows the automatic lubricator to deliver the lubricant to the correct point, with a controlled amount and a more regular frequency compared to manual lubrication.

Why choose automatic lubrication instead of manual lubrication?

Automatic lubrication allows for the reduction of errors, waste, and manual interventions, ensuring more constant lubrication over time. It is especially useful when the points to be lubricated are numerous, difficult to reach or part of continuous production cycles.

Manual lubrication depends on the frequency of interventions, the operator’s experience, the accessibility of components, and the possibility of stopping the machine. In many cases, however, these factors are not fully controllable.

An automatic system, on the other hand, allows for standardizing the process. The lubricant is delivered regularly, in defined amounts, and without waiting for manual intervention. This helps maintain the component’s condition more stably over time.

The main advantages are:

• reduction in downtime, because lubrication can occur even while the plant is running;
• greater component reliability, thanks to the continuity of the lubricant film;
• less mechanical wear, especially on bearings, chains, guides, and gears;
• more precise dosing, with a reduction in waste and lubricant buildup;
• greater safety for operators, because interventions in difficult, hot, contaminated, or dangerous areas are reduced;
• less exposure to dust, dirt, and moisture, thanks to more closed and controlled systems;
• optimization of maintenance costs, because unscheduled interventions, premature replacements, and problems from incorrect lubrication are reduced.

Where are automatic greasing systems used?

Automatic greasing systems are used on mechanical components subject to friction, continuous movement, high loads, or limited accessibility. The most common applications involve chains, bearings, guides, gears, screws, spindles, and sliding surfaces.

Automatic lubrication can be applied in many areas of the machine. The most relevant are those where the lubricant must be present in a constant manner, without excess and without interruption.

Industrial chain lubrication

An automatic lubricator for chains allows for maintaining regular lubrication throughout the operating cycle, reducing friction, noise, wear, and the risk of chain elongation.

This application is frequent on:

• conveyors;
• automatic lines;
• packaging plants;
• handling systems;
• machines operating in contaminated environments.

Bearing lubrication

Bearings require controlled lubrication to reduce friction, temperature, and wear. An excessive dosage can generate overheating or contamination, while an insufficient dosage can compromise the life of the component.

For this reason, automatic lubricators and automatic grease feeders are often used on roller bearings, plain bearings, electric motor bearings, fans, pumps, and rotating parts.

Lubrication of linear guides and sliding surfaces

Linear guides, slides, and sliding surfaces are found in machine tools, automation, handling systems, and production lines. Irregular lubrication can generate friction, loss of precision, vibrations, and localized wear.

In these cases, an automatic lubrication system helps maintain constant movement and reduce manual interventions.

Open gear lubrication

Open gears are exposed to loads, contaminants, and often harsh environmental conditions. Automated lubrication allows for dosing grease or oil in a controlled manner, improving surface protection and reducing the risk of wear.

Screw lubrication

Screws, spindles, shafts, transmissions, and moving mechanical parts can benefit from an automatic lubrication plant when continuity of operation is critical or when manual maintenance requires frequent stops.

In these applications, automatic lubrication serves not only to protect the component but also to maintain more stable machine performance over time.

In which industrial sectors are automatic lubrication systems used?

Automatic lubrication systems are used in many industrial sectors, from machine tools to packaging, from metallurgy to the food sector. They are particularly useful where production continuity, safety and mechanical reliability are critical factors.

Automatic lubrication is not tied to a single sector. It is a cross-cutting solution, applicable to single machines, production lines, and complex plants.

Packaging and food industry

In packaging and the food sector, automatic lubrication systems can support chains, guides, bearings, and handling systems. In these contexts, it is essential to choose not only the dosing system but also the correct lubricant, especially when compatible formulations with specific industry requirements are needed.

Heavy industry and steel mills

In the heavy industry and steel mills, especially in processes related to steel, sheet metal, drilling, cutting, and band saws, lubrication has a direct impact on the protection of the tools, on the quality of the processing and on production continuity.

In these cases, sheet metal lubrication systems, steel lubrication systems, systems for drilling, cutting, or spray applications can be used, depending on the type of process.

Chemical and plastics industry

Memolub automatic lubrication systems are designed for the most demanding environments in the chemical industry and plastics, with particular attention to extrusion applications and high-load processes. Automatic lubricators help improve the reliability of equipment and reduce downtime and maintenance costs.

Woodworking

Memolub automatic lubricators represent a solution for the woodworking and chipboard production industry. The systems are designed to operate in the presence of heavy loads, high temperatures, and aggressive chemical environments typical of gluing units, drilling shafts, and milling machines.

Paper and cardboard

Memolub automatic lubrication systems are suitable for machinery used in the paper and cardboard processing industry, where dust, humidity, and high temperatures can compromise equipment reliability. Automatic lubrication helps to ensure production continuity and longer equipment service life.

Difference between single-point autonomous systems and multi-point systems

A single-point autonomous system lubricates a single point, while a multi-point system can feed multiple points from the same unit. The choice depends on the number of points to manage, the distance, the type of lubricant, and the level of control required.

This distinction is central to choosing an automatic lubrication system. A complex plant. is not always necessary. In some cases, a single automatic lubricator is sufficient to solve a specific problem. In others, however, a more structured system is required, capable of feeding multiple points with greater pressure and control.

Single-point autonomous system

The single-point autonomous system is suitable for limited applications, where a specific component. needs to be lubricated. It can be installed directly on the point or remotely, depending on the machine configuration.

It is an effective solution for:

• isolated bearings;
• chains;
• guides;
• screws;
• difficult-to-reach components;
• points requiring regular but not complex lubrication.

In the Memolub catalog, solutions such as EM plus-120cc and ONE plus-240cc R-500cc fall under this logic, designed for single-point autonomous lubrication.

Multi-point autonomous system

The multi-point autonomous system is designed to feed multiple lubrication points. It allows for managing more complex applications, while maintaining the advantage of a reusable and configurable unit.

This solution is suitable when:

• there are several points to lubricate;
• the distance between the system and the points is greater;
• higher pressure is needed;
• it is necessary to manage grease or oil in multiple areas of the machine;
• you want to reduce the number of devices installed on the plant.

In the Memolub catalog, solutions such as HPS Plus, EPS Plus, PLCD and CONNECT fall into this category.

Battery, 24 Volt, and PLC

The choice of power supply is another important factor.

Battery-powered systems are practical when you do not want to intervene in the machine’s electrical system or when looking for an autonomous and quick-to-install solution.

24 Volt systems are suitable when it is possible to integrate the lubricator with the machine’s power supply, achieving more stable and continuous management.

Systems connectable to PLC are suitable when lubrication must be integrated into the plant’s automation logic, with more precise control of cycles and operating conditions.

In other words, the question is not just “which automatic grease feeder to choose,” but what level of automation, control, and integration the machine really needs.

Automatic lubrication systems and industrial lubricants

An automatic lubrication system works correctly only if it is paired with the right lubricant. The dispenser controls quantity and frequency, but performance, protection, and durability also depend on the grease or oil chosen for the application.

This is an often underestimated point. Installing an automatic system does not mean automatically solving every lubrication problem. If the lubricant is not suitable for the load, temperature, speed, materials, or environment, even the best dosing system may not guarantee the expected result.

For this reason, it is important to evaluate together:

• component characteristics;
• operating conditions;
• relubrication interval;
• compatibility with greases or oils;
• operating temperature;
• presence of water, dust, or contaminants;
• industry requirements;
• application method.

Mascherpa, as a supplier of industrial lubricants and technical maintenance solutions, can support companies not only in choosing the Memolub system but also in selecting the most suitable lubricant for the specific application.

When is it worth installing an automatic lubrication plant?

It is worth installing an automatic lubrication plant when manual lubrication is imprecise, expensive, dangerous, or difficult to keep constant. The advantage increases when the plant works continuously or when the lubrication points are numerous and critical.

An automatic system becomes particularly useful when:

• downtime costs are high,
• manual lubrication takes too much time,
• the point is difficult or dangerous to reach,
• the machine works in contaminated environments,
• components are subject to frequent wear,
• more precise control of the lubricant amount is needed,
• you want to reduce waste and unscheduled interventions,
• the plant requires greater reliability in the long run.

In these cases, automated lubrication can contribute to making maintenance more predictable and less dependent on repetitive manual activities.

Frequently asked questions about automatic lubrication systems

Do you need help choosing the most suitable automatic lubrication system?

The choice of an automatic lubrication plant depends on the type of machine, the number of points to be lubricated, the lubricant used, and the operating conditions of the plant.

To identify the most suitable solution for your application case, you can contact Mascherpa experts and evaluate the most correct Memolub system to improve lubrication management, reduce manual interventions, and make maintenance more controlled.