Superior Bearing Protection for Electric Motors

Innovative design provides 100% exclusion and dissipates shaft voltages Parker Hannifin’s innovative ProTech Self Grounding (SG) design provides the highest level of exclusion against water and dust, per IP66 from the International Electromechanical Commission (IEC), specification 60034-5. The seal provides two types of superior bearing protection on electric motors; it excludes 100% of the contaminants and dissipates electrical shaft voltages caused by variable frequency drives (FVD). The carbon brush assembly in the ProTech SG quickly and effectively transfers the “transient” shaft voltages on the conductive PTFE bearing isolator body, then to motor ground. The proprietary labyrinth sealing design also outperforms and outlasts isolators that rely on a single O-ring for sealing.