Semi-Fluid grease

Industrial semi-liquid lubricating grease

Semi-liquid (semi-fluid) grease is a high-retention lubricant, typically low NLGI grade 00 or 000, designed for enclosed gears, centralized systems, and leaking gearboxes. It provides superior sealing, reduces power consumption, and protects under high-load/pressure conditions. Key applications include automotive steering boxes, textile machinery, industrial gear units, central lubrication systems.

Our Molylub semi-fluid grease fluidity is much better than that of general grease. It will become thinner as the shear speed of the gear increases, and it will become thicker as the shear speed decreases. This ensures that the friction pair can maintain sufficient lubricating oil film at different speeds during operation, thereby prolonging the service life of the gear.

Central lubrication system NLGI 00 grease

Semi-fluid grease itself has excellent fluidity. Without any external force, it flows under the action of its own gravity, which overcomes the shortcomings of ordinary grease that is not easy to flow when there is no external force, and solves the problem of easy lubricating The problem of leakage reduces the requirements for complex sealing, maintains the characteristics of good cooling performance and fast heat dissipation, and makes up for the disadvantages of poor cooling effect of traditional grease.

Compared with lubricating oil, semi-liquid grease is not easy to be released from the oil port in the short term after it is added to the gearbox. Therefore, it can effectively prevent the leakage of lubricating oil from the gearbox, and is not easy to be stolen and does not pollute the equipment and environment.

The adsorption capacity of semi-fluid grease on the metal surface is stronger than that of lubricating oil, which can form a relatively solid oil film and can withstand higher working load. It can effectively avoid the dry friction between the tooth surfaces and play a good role in protecting gears and bearings.

PRODUCT	COMPOSITION	TEMPERATURES	APPLICATION	PDF
GreaseGard CLS 000	Naph oil/ Li thickener	From -50 up 120	Automotive, Power central systems
BioRail L-000 G	Bio Ester oil/ Inorg thickener + Graph	From -30 up 90	Railway locomotive wheel flanges
BioRail M-0000 T	Bio Ester oil/ Ca-Gel thickener + Graph	From -30 up 80	Railway switch plate bushes, blades

At the same time, the use of semi-fluid grease can also save lubricant consumption, simplify equipment maintenance, and extend service life. Performance characteristics of semi-fluid grease: The state of semi-fluid grease is between lubricating oil and plastic grease, and is generally suitable for replacing high-viscosity lubricating oil.

Railways pneumatic system semi-fluid grease

Good starting performance is an important performance of gear transmission, especially it is more important to have a lower starting current while starting smoothly. Through experimental comparison, the current of using semi-fluid grease is smaller than that of using gear oil, indicating that semi-fluid grease will not increase power consumption. Railways semi-liquid greases are specialized lubricants designed to provide the wear protection of grease with the flowable characteristics of oil, typically falling within the NLGI 0, 00, or 000 consistency grades. These lubricants are engineered to remain pliable over a wide temperature range, often from -40°C to +120°C, ensuring pumpability in cold climates and stability in high-temperature operating conditions.

Molylub BioRail L-000 Properties as Railway Semi-Liquid Grease:

Flowability and Pumpability: Unlike thicker greases, these are designed to flow under gravitational force or pump action, making them ideal for centralized lubrication systems (wayside lubricators) and, when sprayable, allowing easy application to wheel flanges and rail curves.

• High Adhesion: They possess excellent adherence to metal surfaces, which helps maintain a stable lubricating film even under severe weather conditions, preventing washout by rain or snow.
• Extreme Pressure (EP) and Anti-Wear Performance: They are formulated with EP additives (e.g., molybdenum disulfide, graphite) to handle high load-carrying requirements at the wheel-rail interface, reducing wear on rails and flanges.
• Water and Corrosion Resistance: They are highly resistant to water washout, preventing rust and protecting components from corrosion in harsh, humid, or dirty environments.
• Stability: They show high oxidation and mechanical stability, which allows them to remain in place and functional for extended periods, reducing maintenance frequency.