Technical Articles
Technical articles and application guides about shaft grounding rings, cold shrink tubes, insulation protection, and material solutions.
What Causes Shaft Voltage in VFD Motors?
Foundational article on shaft voltage and bearing currents in inverter-fed motors.
ST/STW vs RD/RDW: Which Shaft Grounding Ring Structure?
Compare arc-shaped ST/STW and solid RD/RDW shaft grounding rings by structure, mounting, and application fit.
Install an Arc-Shaped Shaft Grounding Ring
Installation checklist for arc-shaped shaft grounding rings where access and mounting envelope need review.
What Is Shaft Voltage and How to Prevent Bearing Damage in VFD Motors
VFDs improve control and efficiency, but their switching can induce shaft voltage that discharges through motor bearings. Learn the causes, warning signs, and how shaft grounding rings help.
Shaft Grounding Ring vs Carbon Brush: Which Is Better?
Compare shaft grounding rings and carbon brushes for VFD motor bearing protection, including maintenance, shaft wear, reliability, cleanliness, and long-term cost.
How to Install a Shaft Grounding Ring Correctly | VFD Motor Bearing Protection
Step-by-step installation guide for shaft grounding rings, covering shaft cleaning, fiber contact, grounding, continuity testing, and common installation mistakes.
Why Shaft Grounding Ring is the Smarter Choice for VFD Motors
Learn why shaft grounding rings are a smarter solution for VFD motor bearing protection compared with traditional carbon brushes, especially in wind power, industrial motors, and variable frequency drive applications.
What Causes VFD Bearing Failure?
VFDs improve motor control and efficiency, but shaft voltage and bearing currents can contribute to premature bearing failure. Learn the mechanisms, warning signs, and common mitigation approaches.
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