Ethernet slip ring DHK078

CAN busRS-485through-bore

Short description
The Ø78 mm waterproof slip ring is designed for continuous 360° transmission of power and signals in harsh, moisture-exposed environments. It features a sealed aluminum-alloy housing and multi-brush precious-metal contacts to ensure low electrical noise, minimal wear and long service life in marine, offshore and washdown industrial applications. Available in standard and fully customized configurations for channel count, current rating, lead length and connector type.

Key Features

• High-level waterproofing: IP65 / IP66 / IP68 options — resistant to water jets, temporary submersion and dust ingress.
• Compact 78 mm profile: Space-saving design with through-bore options (typical Ø25.4 mm) for hydraulic/pneumatic line routing.
• Flexible circuit options: Configurable 1–48 rings; mix of power (up to 10A/20A per ring) + low-current signal + high-speed data (Ethernet, CAN bus, RS485, etc.).
• Durable contacts: Gold-gold or silver-alloy multi-brush design for stable transmission, < 10 mΩ contact resistance variation, maintenance-free operation.
• Rugged housing: Corrosion-resistant aluminum alloy; stainless steel option for marine or offshore use.
• Customization: Lead-wire length, outlet position (side/top), flange mounting and mixed fluid rotary joint integration supported.

Applications

• Marine & offshore winches, ROVs, shipboard rotating systems
• Cable reels & crane slew rings
• Packaging, filling & labeling machines exposed to washdown
• Outdoor CCTV pan-tilt units, radar antennas
• Wind turbines, solar trackers and equipment requiring sealed rotary power/signal transfer

Technical specifications

• Channels: 2
• Rated current: 80 A (2 rings)
• Rated voltage: 0 ~ 380 V DC/VAC
• Insulation resistance: 1000 MΩ @ 1000 V DC
• Dielectric strength: 1500 VAC @ 50 Hz, 60 s, 1 mA
• Dynamic contact resistance range: < 10 mΩ
• Operation speed: 0 ~ 100 rpm
• Operation temperature: -20 °C ~ +80 °C
• Operation humidity: ≤ 70%
• IP protection level: IP65 (options up to IP68)
• Structural material: Aluminum alloy (stainless steel optional)
• Contact materials: Precious (noble) metal
• Lead length: 1500 mm (±20 mm)