Railway grounding device

Product overview
Continuous return currents and fault currents (for example from overhead line damage) can severely damage critical components such as wheelset roller bearings. The Polyrad grounding contact diverts these currents via defined conductive paths and is designed for gearbox mounting, offering extended service life and high operational reliability. Variants include all-carbon contacts optimized for emergency running under currentless conditions and designs for high current densities. Carbon brushes for the grounding contacts are available separately as spare parts.

Benefits

• Low wear for extended service intervals
• Material expertise enabling tailored solutions
• High mechanical and electrical robustness
• Used by major rolling stock manufacturers worldwide (Schunk)
• Carbon brushes available separately as spare parts

Variants and spare parts

• Polyrad grounding contact for gearbox mounting
• All-carbon versions with optimized emergency-running properties
• Designs for high current densities
• Carbon brushes sold separately as spare parts

Application
Grounding contact for mounting on the gearbox to safely divert continuous and fault return currents and to protect transmission bearings and wheelset roller bearings.

Features / technical specifications

• Function: Diverts continuous and fault currents via defined current paths
• Installation: Mounting on gearbox; protects wheelset and transmission bearings
• Materials: All-carbon variants and versions for high current densities
• Durability: Designed for low wear and long service life
• Reliability: High functional reliability and robustness
• Spare parts: Carbon brushes available separately