Through-hole slip ring DHK050

for welding applicationsfor robotssteel

Short Description
This 50 mm bore through-hole slip ring is designed for welding robot rotary power transmission. Single-circuit, 450 A rated current, compatible with 0~380 V AC/DC. H62 copper main body with reinforced steel locking ring for vibration-resistant fastening; precious metal contacts keep dynamic resistance variation < 10 mΩ for stable power output. Rated for up to 6 rpm low-speed rotation, IP51 dust protection fits typical welding shop environments. Custom structural modifications supported.

Product Overview
This heavy-duty through-hole slip ring with a 50 mm inner bore provides dedicated rotary power transmission hardware for automated welding robot systems. The single-circuit architecture carries continuous 450 A while allowing 360° rotation of robotic joints, preventing cable twisting, fatigue fractures and intermittent power interruptions caused by repeated arm motion.

Core Competitive Advantages

• Stable 450 A high-current delivery
  The single-channel design meets power demands of robotic welding operations and is compatible with AC/DC welding power supplies, reducing arc fluctuation during prolonged welding to lower defect rates.
• Steel locking ring for vibration-resistant mounting
  Reinforced steel locking ring provides strong clamping to prevent offset and loose-contact faults from cyclic mechanical vibration during extended low-speed rotation.
• Low-drift precious metal contact system
  Precious metal contacts resist arc erosion and oxidation; dynamic resistance drift remains minimal over long cycles, reducing unplanned downtime.
• H62 copper construction for efficient heat dissipation
  H62 copper offers high electrical conductivity and thermal dissipation, evacuating heat generated under sustained high-current load to prevent internal overheating.
• Industrial-grade environmental resistance
  Operates from -30°C to +80°C with ambient humidity < 70% RH. IP51 protection shields internals from workshop dust, welding fumes and light splashes. 6 rpm rating matches slow-rotating welding positioners and rotary joints.
• Spacious 50 mm through-hole layout
  The enlarged central bore leaves room for cabling and conduit routing inside robotic arms, simplifying on-site installation.

Common Application Scenarios

• Rotary main power conduction for articulated joints of multi-axis welding robots
• Power transmission for low-speed revolving robotic welding positioners
• Power supply for rotating fixtures on automated robotic welding lines
• Rotary power connection on turntable assemblies of heavy industrial welding manipulators

Factory Quality & Customization Promise
Each finished slip ring undergoes strict pre-delivery inspection including high-current load cycling, dynamic resistance checks, dielectric withstand voltage testing and rotational endurance assessment. Customization of locking ring dimensions, mounting hole patterns and sealing upgrades is supported to fit site-specific installation constraints. Formal inspection reports available on request.

Technical Specifications

• Model: DHK050 series
• Inner bore: 50 mm
• Circuits: 1
• Rated current: 450 A
• Voltage compatibility: 0~380 V AC/DC
• Main body material: H62 copper
• Locking ring: Steel (reinforced)
• Contact material: Precious metal contacts
• Dynamic resistance variation: < 10 mΩ
• Maximum rotation speed: 6 rpm (low-speed)
• Ingress protection: IP51
• Operating temperature range: -30°C to +80°C
• Ambient humidity: < 70% RH
• Typical inspections: high-current load cycling, dynamic resistance test, dielectric withstand voltage, rotational endurance
• Customization: locking ring specs, mounting hole layout, sealing upgrades