The DSTI ES Series Capsule Electrical Slip Rings, engineered and manufactured by Dynamic Sealing Technologies, Inc. (DSTI - USA), deliver world-class dynamic electrical connection technology designed for transferring power, sensitive control circuits, and analog/digital signals across continuous 360-degree rotating interfaces.

The ES Series provides machine builders with a versatile selection of standard circuit counts—offering 6, 12, 18, 24, 36, and 56 independent channels—organized into two primary mechanical configurations:
1. Sub-Miniature Family (ES6A, ES12A): Measures an ultra-compact outer body diameter of just 0.50" [12.7 mm] with a 0.95" [24.13 mm] mounting flange, rated for speeds up to 100 RPM and 120V AC/DC. Specifically engineered for extreme space-constrained installations such as miniature pan-tilt gimbal systems, surgical tools, and precision robotic fingers.
2. Standard Compact Family (ES6, ES12, ES18, ES24, ES36, ES56): Utilizes a standardized 0.87" to 1.00" outer body diameter with a 1.75" [44.45 mm] mounting flange, supporting continuous operational speeds up to 250 RPM and voltage ratings up to 240V AC/DC. These models feature standardized mounting geometry designed to integrate directly and coaxially with DSTI’s fluid rotary unions (GP, LT, and SE Series).

Key Engineering Features & Operational Advantages:
- High-Performance Gold-on-Gold Contact Technology: Contact rings and multi-finger brush assemblies are plated with high-purity gold alloys. This metallurgy ensures exceptionally low mechanical wear, eliminates contact oxidation, and maintains pristine conductivity across millions of continuous operating cycles.
- Ultra-Low Electrical Noise (< 60 Milliohms): Guarantees crystal-clear, distortion-free transfer of low-voltage sensor readings (strain gauges, thermocouples, encoders, 0-10V / 4-20mA signals) as well as high-speed digital communication buses running at speeds up to 50 Mbps without bit error degradation.
- Premium Silver-Plated Copper Lead Wires: Incorporates 48-inch [1219 mm] flying leads constructed from stranded silver-plated copper wire (26 AWG or 28 AWG) insulated with high-grade flexible fluoropolymer, color-coded per international standards for error-free wiring and simplified commissioning.
- Low-Torque Engineering with Dual Precision Bearings: Optimized brush tension combined with high-precision, permanently lubricated ball bearings results in near-zero starting and running drag torque, eliminating mechanical drive overload and minimizing thermal buildup.
- Environmental Dust & Moisture Protection: Standard capsule assemblies include internal splash seals to safeguard contacts from airborne dust and moisture. For severe washdown or outdoor deployment, an optional IP65-rated industrial protective enclosure is available.
- Unified Fluid + Electrical Integration: Purpose-built to mount directly through the central bore of DSTI fluid rotary unions, providing industrial automation engineers with a complete, single-source hybrid solution for fluid, electrical power, and sensor signal transmission.

Typical Industrial Applications:
- Multi-axis robotic arm wrists and collaborative robot (Cobot) end-of-arm tooling.
- Commercial & security pan-tilt-zoom (PTZ) camera gimbals and radar pedestals.
- Medical scanning equipment, rotary surgical operating lights, and laboratory centrifuges.
- Rotary index tables, automated winding carousels, stretch wrappers, and packaging lines.

• Manufacturer: DSTI (Dynamic Sealing Technologies, Inc.)
• Origin / Country of Manufacture: USA
• Product Series: ES Series Compact Capsule Electrical Slip Rings
• Model Breakdown & Circuit Counts:
  - ES6A: 6 Circuits | 2A/Circuit | 120V AC/DC | Max Speed 100 RPM | Capsule Length 0.47" [11.94 mm]
  - ES6: 6 Circuits | 2A/Circuit | 240V AC/DC | Max Speed 250 RPM | Capsule Length 0.57" [14.48 mm]
  - ES12A: 12 Circuits | 2A/Circuit | 120V AC/DC | Max Speed 100 RPM | Capsule Length 0.59" [14.99 mm]
  - ES12: 12 Circuits | 2A/Circuit | 240V AC/DC | Max Speed 250 RPM | Capsule Length 0.75" [19.05 mm]
  - ES18: 18 Circuits | 2A/Circuit | 240V AC/DC | Max Speed 250 RPM | Capsule Length 1.02" [25.91 mm]
  - ES24: 24 Circuits | 2A/Circuit | 240V AC/DC | Max Speed 250 RPM | Capsule Length 1.29" [32.77 mm]
  - ES36: 36 Circuits | 2A/Circuit | 240V AC/DC | Max Speed 250 RPM | Capsule Length 2.06" [52.32 mm]
  - ES56: 56 Circuits | 2A/Circuit | 240V AC/DC | Max Speed 250 RPM | Capsule Length 2.96" [75.30 mm]
• Continuous Current Rating: 2 Amps per circuit
• Maximum Voltage Rating:
  - Sub-Miniature "A" Models (ES6A, ES12A): 120V AC/DC
  - Standard Models (ES6, ES12, ES18, ES24, ES36, ES56): 240V AC/DC
• Maximum Operating Speed: 100 RPM (ES6A, ES12A) / 250 RPM (Standard Models)
• Maximum Data Speed: Under 50 Mbps (Analog, Digital, and non-Ethernet Fieldbus signals)
• Maximum Electrical Noise: 60 Milliohms (mΩ) at rated speed
• Contact Metallurgy: High-Quality Gold-on-Gold contacts
• Lead Wire Material: Flexible Silver-Plated Copper, Color-Coded
• Wire Gauge: 28 AWG (ES6A, ES12A) / 26 AWG (Standard Models)
• Standard Lead Length: 48 inches [1,219 mm] on both rotor and stator ends
• Internal Bearings: Dual pre-lubricated high-precision miniature ball bearings
• Temperature Operating Envelope: -40°C to +80°C (-40°F to +176°F)
• Ingress Protection: Internal splash seals for dust/moisture; optional external IP65 protective housing available
• Mechanical Mounting: Flanged capsule housing with pre-drilled bolt pattern; direct coaxial integration compatible with DSTI GP, LT, and SE fluid rotary unions.