Through-bore slip ring CBDHK075

for generatorsfor welding applicationsfor electric motors

Product Overview
The 5-Circuit 250A Heavy Current Carbon Brush Slip Ring is a rotary electrical connector designed to transmit high-amperage power between stationary and rotating components. It features a 75 mm central through-bore for direct shaft mounting and delivers continuous 360° power transfer up to 250 A per channel.

Short Description
CBDHK075-5-250A Carbon Brush Slip Ring

• Product Type: Heavy-duty carbon brush slip ring for high-power rotating equipment
• Circuit Specification: 5 independent circuits, rated current 250A per circuit
• Electrical Parameters: 0–380V AC/DC, rotating speed 0–100 RPM
• Structure Dimension: Compact design with 75 mm through bore
• Core Configuration: High-purity copper rings (silver/gold plated), self-lubricating carbon-graphite brushes, engineering plastic insulation
• Performance Advantages: Low contact resistance, low heat generation, long service life
• Application Equipment: Wind turbines, metallurgical machinery, electroplating production lines, rotary welding machines, cable reels, large motors and generator sets
• Customization Service: Circuit quantity, current, voltage, rotating speed and protection level can be customized on demand

Key Specifications

• Number of Circuits: 5 independent channels
• Rated Current: 250A per channel
• Rated Voltage: 0–380V AC/DC
• Operating Speed: 0–100 RPM
• Inner Diameter (Bore): 75 mm
• Contact Material: Copper ring + carbon-graphite brush
• Ring Material: High-purity copper, silver or gold plated
• Insulation Material: Engineering plastic (POM / PA / PEEK optional)
• Dielectric Strength: ≥1000V @ 50Hz between circuits
• Insulation Resistance: ≥1000MΩ @ 500VDC
• Dynamic Contact Resistance: ≤10 mΩ
• Operating Temperature: -30°C to +80°C (custom up to +200°C available)
• Protection Level: IP51 standard (IP54 / IP65 optional)
• Expected Service Life: 5,000–10,000 hours brush life under rated load

Core Advantages

• Ultra-High Current Capacity: Each channel carries up to 250A continuously with plated copper rings to minimize resistance and heat.
• Self-Lubricating Carbon-Graphite Brushes: Reduced friction and wear for longer service life and stable contact.
• Low Contact Resistance, Minimal Heat: Precision rings achieve dynamic contact resistance ≤10 mΩ, controlling temperature rise under heavy load.
• Rugged Engineering Plastic Insulation: High dielectric strength and temperature resistance with POM/PA/PEEK options.
• Compact 75 mm Through-Bore Design: Direct shaft mounting for easy integration.
• Easy Maintenance: Externally accessible brush holders for quick inspection and replacement.
• Cost-Effective & Reliable: Copper-carbon system offers high performance at moderate cost versus precious-metal solutions.

Typical Applications

• Wind Power: Pitch and yaw drive power transmission
• Metallurgy & Plating: Electroplating, electrolysis, and anodizing equipment
• Welding Industry: Rotary welding machines
• Cranes & Excavators: Cable reels, hose reels, rotating cabins
• Motors & Generators: Power and excitation current transfer
• Mining & Drilling Rigs: Rotary drives and sensors in harsh conditions
• Entertainment: Rotating stages, carousels, 360° display platforms
• Industrial Machinery: Rotary tables, turntables, automated production lines

Customization Options

• Circuit Configuration: Combine power circuits (up to 250A+) with signal channels (Ethernet, CAN, RS485, etc.)
• Current & Voltage: Scalable from 50A to 3000A per channel; voltage up to 10,000V
• Speed: Standard 0–100 RPM; higher-speed designs available up to 20,000 RPM
• Bore Size: 0–1000 mm inner diameter available
• Protection: IP51 standard; optional IP54 / IP65 / IP68
• Temperature Range: Standard -30°C to +80°C; extended -60°C to +200°C
• Housing: Engineering plastic, aluminum alloy, or stainless steel
• Integration: Can be combined with pneumatic, hydraulic, RF, or fiber optic rotary joints

Technical Specifications

• Number of Circuits: 5 independent channels
• Rated Current: 250A per channel
• Rated Voltage: 0–380V AC/DC
• Operating Speed: 0–100 RPM
• Inner Diameter (Bore): 75 mm
• Contact Material: Copper ring + carbon-graphite brush
• Ring Material: High-purity copper, silver or gold plated
• Insulation Material: Engineering plastic (POM / PA / PEEK optional)
• Dielectric Strength: ≥1000V @ 50Hz between circuits
• Insulation Resistance: ≥1000MΩ @ 500VDC
• Dynamic Contact Resistance: ≤10 mΩ
• Operating Temperature: -30°C to +80°C (custom up to +200°C available)
• Protection Level: IP51 standard (IP54 / IP65 optional)
• Expected Service Life: 5,000–10,000 hours brush life under rated load