| |
AEGIS Bearing Protection Ring™ |
Spring Loaded Carbon Block Brush |
| Wear |
Virtually no friction or wear, lasts for service life of equipment (no friction to shaft). |
Wears out due to friction |
| Shaft Grounding Effectiveness |
Continuous discharge - no degradation over time. |
Decreases after only a few weeks due to coating buildup on shaft. Must be cleaned to restore contact. |
| Surface Rate |
Surface rate and RPM do not effect performance or wear, tested at 20,000 RPM and high surface rate applications of 180 f/s. |
Higher surface rate/RPM results in faster wear and replacements, RPM limitation, less effective at higher RPM. |
| Create Dust |
No measurable dust collected or wear observed (less than 0.001") in 10,000 hours. |
Carbon block wear on shaft creates dust particles based on surface rate of shaft. |
| Life |
Lasts for service life of equipment - nothing to wear out, estimated life is greater than 200,000 hours. |
Depends on material but may last for as little as 3-5 months. |
| Replacement |
Never needs to be replaced. |
Replacement needed frequently (requires equipment shutdown). |
| Motor/equipment shutdown lost production |
Never |
Periodic for maintenance or replacement needed. |
| Periodic Shaft maintenance |
Never |
Periodic maintenance needed to clean/remove oxidation/coatings/contamination shaft. |
| Brush maintenance |
Never |
Periodic maintenance needed to clean/remove coatings/contamination brush contact surface. |
| Works if oil/grease gets on shaft |
Yes |
No |
| High frequency VFD currents |
Micro fiber is optimized for high frequency current discharges produced by high speed VFD dv/dt pulse width modulation (PWM) switching. |
Not as effective for high frequencies. |
| Complex to install |
Simple screw-on brackets - mounts direct to end bell. Self centers for easy alignment, slim design minimizes shaft length requirement. |
Complex bracket installation and alignment, may require machining for bracket installation, may require over 1" of usable shaft length. |
| Performance Guarantee |
Bearings on motors up to 100HP guaranteed not to fail from bearing fluting caused by electrical bearing discharges. |
None |
| Load on shaft |
No load on shaft - micro fibers "lightly" touch shaft surface |
Spring load on shaft, causes drag and decreases motor efficiency |
| Effective conductive surface contact |
Three to four times greater, hundreds of thousands (even millions) of micro fibers surround shaft |
Only 15-30% contact on slipping surface. |
