SGi® Bearing Isolators
Shaft Grounded Bearing Isolators
M Barnwell Services offer the full range of Garlock’s KLOZURE® SGi® Bearing Isolators. SGi® Bearing Isolators with an integrated AEGIS™ Shaft Grounding Ring which diverts stray shaft voltage on VFD (Variable Frequency Drive) controlled electric motors. They integrate the best features possible for shaft grounding with extraordinary bearing protection. This makes them the best choice for electric motors.
SGi® Bearing Isolators were engineered by merging two great technologies:
- GUARDIAN™ – categorically best bronze bearing isolator for ingress and egress protection on the market
- AEGIS™ – industry-leading shaft voltage mitigation technology, maintenance-free, reliable, and long-lasting
Merging these two technologies together provided a maintenance-free bearing isolator that guarantee the highest possible protection level of ingress and egress with the additional protection of shaft grounding.
Available in three configurations to fit any application:
SGi® | SGi®-180 | SGi®-MT | |
| Speed | 0 to 12,000 f/m (60.9 m/s) | 0 to 4,500 f/m (22.8 m/s) | 0 to 4,500 f/m (22.8 m/s) |
| Protection | IP66 | IP65 | IP66 |
| Standard Width | .570” (14.5mm) | .905” (23.0mm) | .800” (20.3mm) |
| Minimum Cross Section | .500" (12.7mm) | .500" (12.7mm) | .500" (12.7mm) |
| Construction | Bronze with Fluoroelastomer (FKM/FPM) O Ring | Bronze with Fluoroelastomer (FKM/FPM) O Ring | Bronze with Fluoroelastomer (FKM/FPM) O Ring |
| Size Range | .875” to 6.000” | .875” to 6.000” | .875” to 6.000” |
| Axial Motion | 0 to 0.025” (0 to 0.6mm) | 0 to 0.025” (0 to 0.6mm) | 0 to 0.025” (0 to 0.6mm) |
| Radial misalignment | 0 to 0.020” (0 to 0.5mm) | 0 to 0.020” (0 to 0.5mm) | 0 to 0.020” (0 to 0.5mm) |
| Temperature Range | 30°C (-22°F) to +148.9°C (+300°F) | 30°C (-22°F) to +148.9°C (+300°F) | 30°C (-22°F) to +148.9°C (+300°F) |
| Shaft Grounding | AEGIS™ Shaft Grounding Ring | AEGIS™ Shaft Grounding Ring | AEGIS™ Shaft Grounding Ring |
Features and Benefits of SGi® Bearing Isolator:
- Integrated AEGIS™ Shaft Grounding Ring diverts stray shaft voltage, the best bearing protection in one seal
- AEGIS™ Shaft Grounding Ring provides ongoing 360° constant connection to the shaft
- Non-contact engineered labyrinth design reduces shaft drag, consequently reducing energy usage
- No metal-to-metal contact between the rotor and the stator
- Unitizing ring – no separating of the elements during operation, preventing premature failure
- Extended bearing life, lifetime bearing protection increases mean time between failure (MBTF)
- Non-wearing components – seal properties are not degraded over time, consistent sealing performance
- Engineered labyrinth design exclude contamination while retaining bearing lubrication – to IP 66 ratings
- Compliant with various industry manufacturing standards
- Accelerated mean rime to repair (MTTR)
- Eliminates repair for seal housings and shaft grooving
SGi® Bearing Isolators are also available as Surface Mounted, click here for more information.
For additional information on our range of Bearing Isolators, click here or contact a member of the team.
Other Garlock products we supply include GUARDIAN™, ISO-GARD®, MICRO-TEC® II Bearing Isolators, and many more.