High temperature bearing grease

Heat resistant bearing grease

Bearing overheating in industrial equipment stems from inadequate lubrication, excessive loads, misalignment, contamination, and improper installation. These factors create increased friction within the bearing system, generating excess heat that accelerates wear and can lead to complete failure.

High temperature lubrication refers to the use of solid lubricating materials that reduce friction and wear in environments exceeding 350 °C, where liquid lubricants are ineffective due to rapid degradation. These materials are essential for high-performance applications in industries such as aerospace, automotive, and military, where they must withstand extreme conditions including high temperature, corrosion, and heavy loads. High temperature lubrication is confronted with many practical challenges with the development of modern industry. At present, high temperature tribology still lacks systematically fundamental theory, simply drawing on the experience of solid lubrication theory. Compared to liquid lubrication, it is imperative to further minimize wear and reduce friction of high temperature solid-lubricating material.

Molylub FluorTec 2 HV Perfluoropolyether-based Lubricant

Perfluoropolyethers (PFPEs) provide great lubrication at wider temperature ranges than many other lubricant technologies – from -70°C to more than 300°C. Because of their long-chain polymer structure, PFPEs are highly inert and can protect equipment in the presence of highly reactive chemicals.

PRODUCT	COMPOSITION	TEMPERATURES	APPLICATION	PDF
Molylub FluorTec MPA	PFPE oil/ PTFE thickener	up to 260 / 300	Kiln, PET

Various high temperature solid-lubricating materials have been developed to meet different requirement. According to the composition, high temperature solid-lubricating material is divided into metal matrix, intermetallic matrix and ceramic matrix high temperature solid-lubricating material. According to the usable form, high temperature solid-lubricating material is divided into high temperature solid-lubricating coating/film and high temperature solid-lubricating composite/bulk.

Hot conditions grease lubrication

In hot conditions, lubricants have a tendency to thin out, compromising their protective layer and making them less effective at shielding against wear. This reduced protection means machinery parts come into closer contact, accelerating wear and potential damage. Conversely, cold temperatures can make lubricants overly thick. This increased viscosity can hinder the lubricant from quickly reaching and coating vital components, especially during initial start-ups. When lubricants are too thick, they cannot mitigate friction as effectively, leading to potential equipment strain and increased energy consumption.

In foundries and steel mills, temperatures can soar to levels that challenge both machines and their lubricants. Excessive heat can cause lubricants to break down. This leads to increased friction and premature bearing wear. We address this challenge with a range of high-temperature lubrication products. These lubricants are designed to withstand the heat and keep machinery running smoothly.

High temperature bearings are made to work in temperatures above 120°C. Some special bearings can handle even higher temperatures, over 260°C. They are designed to remain reliable and efficient in extreme heat. This helps equipment last longer and reduces the need for frequent maintenance. High temperature bearings are used in several heat-intensive applications, including:

• Industrial Ovens: Keep machinery running smoothly at high temperatures during processes like baking or curing.
• Kilns: Withstand extreme heat in industries like ceramics and metal production to maintain performance.
• Molten Salt Pumps: Ensure reliable operation in energy production systems that handle molten salt at high temperatures.
• Steam Turbines: Endure the heat from steam to maintain efficient operation in power generation.
• Automotive Conveyor Systems: They support the movement of parts through heat-sensitive processes. These processes include painting or curing in automotive manufacturing.

When bearings fail in extreme conditions, production stops and costs can spiral out of control fast. We’ve spent years solving these exact problems for manufacturers who can’t afford downtime. Downtime is detrimental for most facilities. We’ve found the best way to demonstrate our capabilities isn’t through technical specifications alone. It is through the challenging projects where we have successfully delivered high temperature bearings and the lessons learned from real-world applications.