High speed, temperature and shear demand more than most greases can deliver. Grease HS2 protects across all three simultaneously
Electric motor bearing grease: built for three simultaneous challenges
Standard relubrication intervals often underestimate how quickly grease ages in electric motor bearings.
Electric motor bearings operate at high rotational speeds, elevated temperatures and under sustained mechanical shear. These conditions accelerate base oil oxidation and additive depletion, often faster than standard relubrication intervals assume. As additives are consumed, protective performance gradually declines. Relubrication frequency then increases, not because the bearing is failing, but because protection fades sooner than expected.
Interflon Grease HS2 is formulated to maintain consistent protection throughout the full interval.
Why do electric motor bearings consume grease faster than expected?
Choosing the right electric motor bearing grease is only half the challenge. The other half is understanding why even a well-specified grease can underperform under sustained high-speed conditions.
In electric motors, high speed, increased operating temperatures and continuous shear accelerate grease ageing. Base oil oxidation escalates, the mechanical stability of the thickener is compromised, and additives are depleted more quickly. The grease can still be present in the bearing, while the active protection it provides diminishes over time.
How does Interflon Grease HS2 extend optimum performance?
Grease HS2 extends optimum performance by addressing the potential root causes of failure or diminishing performance. It reduces friction, which prevents the temperature and shear increase that contributes to grease ageing in the first place. Lower working temperatures limit base oil oxidation. Less shear reduces mechanical stress on the thickener system. The full grease matrix — thickener, base oil and additives — demonstrates a significantly slower ageing rate, so protection stays consistent across the full interval.
Its adaptive lubricating film supports surface separation without creating unnecessary internal resistance, and prevents metal-to-metal contact. In addition, its non-polar thickener system helps additives reach and adhere to the metal surface without being held back by thickener competition. Grease HS2 combines efficient additive delivery with very high additive levels. Combined with MicPol® technology, this supports consistent protection throughout the prolonged lubrication interval, without a gradual decline in performance.
What results can you expect with Grease HS2 in electric motors?
Protection remains consistent from first application to the end of the interval, without the gradual performance decline that drives compensatory relubrication.
- Significantly extended lubrication intervals
- Reduced preventive and corrective maintenance
- Longer lasting surface protection
- Reduced bearing replacement frequency in electric motors, where replacement is complex, costly and time consuming
Frequently Asked Questions about electric motor bearing lubrication
A common cause is that high speed, elevated temperature and mechanical shear deplete additives faster than the interval assumes, oxidation of the base oil acts as a catalyst for additive depletion and varnish formation, and the mechanical stability of the grease is compromised, leading to excessive oil bleed. As additive performance fades, more frequent relubrication is used to maintain protection. Interflon Grease HS2 resists and decreases the harmful effects of these tough operating conditions, supporting consistent protection across the full interval.
MicPol® is Interflon's proprietary friction-reduction technology. Micronised, polarised particles bond to metal surfaces, forming a protective barrier that remains effective between moving surfaces. In electric motor bearings, where heat and shear accelerate grease ageing, MicPol® enhances durable surface protection. The technology is PFAS-, microplastics- and nanotechnology-free.
In many conventional greases, polar thickeners (that typically are attracted by metal surfaces) can compete with additives for access to metal surfaces, which can limit additive effectiveness. Grease HS2 uses a non-polar thickener system to reduce this effect, helping additives reach the surface and allows them to function as designed.
In many cases, yes. Grease HS2 covers a wide performance range across medium to high speeds, variable loads and standard to elevated temperature environments. It is often used to consolidate multiple greases into a single product, reducing lubricant management complexity and lowering the risk of misapplication.
Find out what Grease HS2 can deliver in your electric motor bearing application
A single on-site assessment by an Interflon Technical Adviser identifies where the greatest impact can be achieved and what a switch to Grease HS2 would realistically deliver in your situation. Where a pilot is appropriate, it runs with documented outcomes before any broader commitment is required.