Through-bore slip ring DHK050

through-holefor robotsfor welding applications

Short Description:
DHK050-1-450A high-current through-hole slip ring for welding robot power transmission.

Product Overview:
This heavy-duty through-hole slip ring with a 50 mm inner bore is designed for rotary power transmission in automated welding robot systems. The single-circuit design supports 450 A continuous current for uninterrupted 360° rotation, eliminating cable twisting and intermittent power caused by repeated arm motion. The main body is H62 copper fitted with a reinforced steel locking ring for vibration-resistant fastening. Precious metal contacts keep dynamic resistance variation < 10 mΩ to stabilize power output. Rated for up to 6 rpm with IP51 protection suitable for typical welding-shop environments. Structural and mounting customizations are available to match specific installation constraints.

Core Competitive Advantages:

• 1. Stable 450 A high-current delivery
  Single-channel configuration supports AC and DC welding power sources and reduces arc fluctuation during continuous welding.
• 2. Steel locking ring for vibration-resistant mounting
  Reinforced steel locking ring provides strong clamping to prevent offset and loose contact under long-term low-speed rotation.
• 3. Low-drift precious metal contact system
  Precious metal contacts resist arc ablation and oxidation, maintaining minimal resistance drift over extended cycles to reduce unplanned downtime.
• 4. H62 copper body for efficient heat dissipation
  H62 copper ensures high electrical conductivity and thermal dissipation to prevent overheating under sustained high-current loads.
• 5. Industrial environmental resistance
  Operational range -30°C to +80°C, ambient humidity < 70% RH; IP51 protection against fine dust and light splashes; 6 rpm rating for low-speed welding positioners.
• 6. Generous 50 mm through-hole
  Enlarged central bore facilitates cable and conduit routing inside robotic arms for easier on-site assembly.

Common Application Scenarios:

• Primary power feed for articulated joints of multi-axis welding robots
• Power transmission for low-speed rotary welding positioners
• Rotary power supply for rotating fixtures on automated welding production lines
• Power connection on turntables and manipulators in heavy welding stations

Factory Quality & Customization:
Each slip ring undergoes load-cycling tests, dynamic resistance checks, dielectric withstand voltage verification and rotational endurance inspections prior to delivery. Custom options available for locking ring dimensions, mounting hole layouts and enhanced sealing for harsher environments.

Technical specifications:

• Model: DHK050
• Bore (inner diameter): 50 mm
• Circuits: 1
• Rated current: 450 A
• Voltage compatibility: 0~380 V AC/DC
• Main body material: H62 copper
• Locking ring: Reinforced steel locking ring (vibration-resistant)
• Contact type: 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
• Maximum ambient humidity: < 70% RH
• Typical applications: Robotic welding arms, welding positioners, rotating fixtures, turntables for welding manipulators
• Customization: Structural and mounting layout modifications supported