High-temperature greases help protect bearings and moving components operating under continuous heat, heavy loads, high speed, or harsh environmental conditions. In demanding equipment, ordinary grease may oxidise, harden, lose base oil, or form deposits. This can increase friction, accelerate wear, and lead to unplanned maintenance.
The right high-temperature grease should be selected based on actual operating conditions, not ambient temperature alone. Bearing temperature can rise because of speed, load, vibration, friction, poor heat dissipation, or thermal radiation from nearby equipment. As operating temperature increases, grease life can reduce, making lubricant selection and relubrication planning important.
Important factors to consider when choosing high-temperature grease include:
-Actual bearing operating temperature
-Continuous or intermittent heat exposure
-Load, speed, and vibration
-Water, steam, dust, chemicals, and corrosion risk
-Bearing type and lubrication method
-Compatibility with the existing grease
High-temperature greases may use mineral or synthetic base oils with specialised thickener technologies such as polyurea, PTFE, or PFPE. Polyurea greases are commonly used where long bearing life, thermal stability, and protection from oxidation are required. PTFE- and PFPE-based greases can support extreme-temperature or chemically demanding applications where low evaporation and material compatibility are essential.
A grease’s dropping point alone should not determine its suitability. Reliable lubrication at high temperature also depends on oxidation resistance, mechanical stability, evaporation characteristics, base-oil viscosity, and the ability to maintain a protective lubricating film under load.
BECHEM India offers high-temperature greases developed for bearings and components exposed to elevated temperatures, heavy loads, thermal radiation, water, steam, and corrosive operating conditions. The BECHEM range includes polyurea-, PTFE-, PFPE-, aluminium-complex-, and barium-complex-thickened greases with mineral, synthetic, PAO, or PFPE base oils. These solutions are used in applications such as drying and annealing furnaces, rotary kilns, hot-air fans, conveyor systems, electric motors, automotive paint shops, paper-processing equipment, and steel-industry machinery.
Before changing lubricants, always check the equipment manufacturer’s recommendations, grease compatibility, product technical data sheet, and the machine’s real operating temperature. Selecting the correct high-temperature grease can help improve bearing reliability, reduce relubrication needs, and minimise maintenance-related downtime.
Visit us to know more: https://www.bechemindia.com/lubricants/lubricating-greases/high-temperature-greases/