Don’t Settle for Poorly Manufactured Imitations or Carbon Fiber Rings
End the frustration of bearing failure caused by VFD-induced currents with Helwig Carbon Products’ industry-leading BPK™ Shaft Grounding Solution (sometimes known as shaft earthing outside of the U.S). Featuring our proprietary Silver Graphite Brush, Helwig BPKs deliver 10+ years of maintenance-free protection, far outperforming carbon fiber rings and poorly manufactured imitations of the Helwig BPK.
Helwig BPKs: Superior to Imitations and Carbon Fiber Rings
1. Carbon Fiber Rings Are a Short-Term Solution
- Carbon fiber rings provide adequate protection at first, but within 6–12 months, shaft voltage rises to damaging levels, leaving bearings vulnerable.
- Carbon fiber rings are made of higher electrical resistance materials and aluminum housings, making them less effective for high-frequency grounding.
- Frequent Maintenance: Carbon fiber rings require repainting with colloidal silver every six months to a year and must be replaced when carbon fiber bristles wear, increasing downtime and costs.
- For more information, view our Bearing Protection Comparison.
2. Poorly Manufactured Imitations Fall Short – Problems in Engineering & Manufacturing Affect Performance.
Issues with different imitation models include:
- Unreasonably high PSI causes accelerated mechanical wear.
- Concave brush design restricts optimal contact to a single shaft size, limiting versatility.
- Use of brush grades with higher friction and resistance, leading to increased overall contact resistance at the brush face during operation, which results in poor grounding performance.
Why Choose Helwig BPKs?
Outstanding High-Frequency Performance
Helwig BPKs use silver graphite brushes that have very low electrical resistance, delivering exceptional shaft grounding at very high frequencies. Their robust construction avoids the wear and degradation issues found in imitations and carbon fiber rings.
Optimal Grounding for the Long Haul
Proven to protect bearings for 10+ years, Helwig BPKs mitigate shaft voltage to below 1V peak-to-peak, ensuring long-term reliability.
Maintenance-Free
Once installed, Helwig’s BPKs maintain optimal shaft grounding without the need for upkeep, even in contaminated environments. The self-cleaning properties of the silver graphite brush ensure a contaminant-free brush track for consistent performance.
Simple Inventory and Installation
Helwig BPKs reduce inventory with one BPK model for multiple shaft sizes. Installation is straightforward with EZ MultiFit® brackets, eliminating the need to uncouple motors.
Protect Your Bearings with the Best
Don’t risk costly downtime or repairs with cheap imitations or carbon fiber rings. Trust Helwig’s BPK Shaft Grounding Solution for outstanding durability, performance, and reliability. Contact us today at (414) 354-2411, email [email protected], or visit www.helwigcarbon.com/shaft-grounding to learn more!