The DSTI ESM Series (Mixed Power & Signal Capsule Slip Rings), engineered and manufactured by Dynamic Sealing Technologies, Inc. (DSTI - USA), represents world-class dynamic electrical contact technology designed specifically to handle hybrid transmission needs: routing higher-current power lines (5A or 10A) alongside sensitive low-voltage control circuits and high-speed analog/digital data channels (2A) across a single rotating interface.

Unlike standard capsule slip rings that are limited exclusively to 2A signal channels, the ESM Series integrates pre-configured power and signal circuit combinations, eliminating the need for multiple independent slip rings and drastically saving valuable machine space:
1. ESM300 Family (ESM36, ESM312): Features a compact capsule length of 1.940" [49.3 mm] with a standard 1.750" [44.45 mm] mounting flange:
   - ESM36: 9 circuits total, configured with (3x) 10A power lines + (6x) 2A signal lines.
   - ESM312: 15 circuits total, configured with (3x) 5A power lines + (12x) 2A signal lines.
2. Mid-Range ESM400 Family (ESM420, ESM428): Capsule length of 2.600" [66.0 mm], scaling circuit capacity to 24 and 32 independent channels:
   - ESM420: 24 circuits total, configured with (4x) 10A power lines + (20x) 2A signal lines.
   - ESM428: 32 circuits total, configured with (4x) 5A power lines + (28x) 2A signal lines.
3. High-Density ESM400 Family (ESM440, ESM448): Capsule length of 3.500" [88.9 mm], delivering exceptional circuit density up to 44 and 52 channels:
   - ESM440: 44 circuits total, configured with (4x) 10A power lines + (40x) 2A signal lines.
   - ESM448: 52 circuits total, configured with (4x) 5A power lines + (48x) 2A signal lines.

Key Engineering Features & Operational Advantages:
- Gold-on-Gold Contact Metallurgy: Multi-finger gold alloy brushes run continuously on high-purity gold-plated rotor tracks. This prevents contact oxidation, reduces physical friction wear, ensures minimal contact resistance, and guarantees an operational lifespan exceeding tens of millions of continuous revolutions.
- Ultra-Low Electrical Noise (≤ 60 Milliohms): Delivers pristine signal integrity without interference or waveform distortion, making it fully compatible with low-voltage analog sensors (load cells, thermocouples, RTDs, 0-10V, 4-20mA, encoder pulses) and digital communication buses operating at speeds up to 50 Mbps, even when adjacent power lines are actively energized.
- Heavy-Duty Silver-Plated Copper Leads: Uses application-matched wire gauges including 16 AWG (for 10A circuits), 20 AWG (for 5A circuits), and 26 AWG (for 2A circuits). Leads feature high-temperature flexible Teflon insulation, are color-coded per international conventions, and measure 48 inches [1,219 mm] on both rotor and stator ends.
- High-Precision Ball Bearings & Low Drag: Incorporates dual pre-lubricated miniature precision ball bearings, ensuring silky-smooth rotation, zero mechanical vibration, and continuous operating speeds up to 250 RPM without excessive heat dissipation.
- Ingress Dust and Splash Protection: Built with internal splash seals to protect contact tracks from airborne particulate and minor moisture condensation. For harsh washdown or outdoor industrial environments, an optional IP65-rated protective enclosure (SRPE) is available.
- Unified Coaxial Integration: Standard flange and mounting geometry allow the ESM Series to integrate directly through the center bore of DSTI fluid rotary unions (GP, LT, SE Series), providing an all-in-one hybrid rotary transmission platform for hydraulic oil, pneumatic air, vacuum, electrical power, and digital controls.

Typical Industrial Applications:
- Multi-axis industrial robot arms, articulated welding/painting robots, and robotic end-of-arm tooling (EOAT).
- Automated rotary indexing tables, rotary CNC pallet changers, and pneumatic/hydraulic clamping fixtures.
- Outdoor pan-tilt-zoom (PTZ) surveillance camera heads, radar pedestals, and marine tracking antennas.
- Rotary bottle-capping, automated labeling, rotary stretch wrappers, and packaging carousels.
- Electric cable reeling drums for overhead cranes and heavy harbor material handling equipment.

• Manufacturer: DSTI (Dynamic Sealing Technologies, Inc.)
• Origin / Country of Manufacture: USA
• Product Line: ESM Series Mixed Power & Signal Capsule Slip Rings
• Model Configurations & Circuit Breakdowns:
  - ESM36: 
    + Total Circuits: 9 Circuits
    + Circuit Rating: (3x) 10A + (6x) 2A
    + Capsule Length: 1.940" [49.3 mm] | Flange Diameter: 1.750" [44.45 mm]
  - ESM312: 
    + Total Circuits: 15 Circuits
    + Circuit Rating: (3x) 5A + (12x) 2A
    + Capsule Length: 1.940" [49.3 mm] | Flange Diameter: 1.750" [44.45 mm]
  - ESM420: 
    + Total Circuits: 24 Circuits
    + Circuit Rating: (4x) 10A + (20x) 2A
    + Capsule Length: 2.600" [66.0 mm] | Flange Diameter: 1.750" [44.45 mm]
  - ESM428: 
    + Total Circuits: 32 Circuits
    + Circuit Rating: (4x) 5A + (28x) 2A
    + Capsule Length: 2.600" [66.0 mm] | Flange Diameter: 1.750" [44.45 mm]
  - ESM440: 
    + Total Circuits: 44 Circuits
    + Circuit Rating: (4x) 10A + (40x) 2A
    + Capsule Length: 3.500" [88.9 mm] | Flange Diameter: 1.750" [44.45 mm]
  - ESM448: 
    + Total Circuits: 52 Circuits
    + Circuit Rating: (4x) 5A + (48x) 2A
    + Capsule Length: 3.500" [88.9 mm] | Flange Diameter: 1.750" [44.45 mm]
• Voltage Rating: 240V AC/DC
• Continuous Operating Speed: Up to 250 RPM
• Maximum Data Speed: Under 50 Mbps (Non-Ethernet, Analog and Digital signals)
• Maximum Electrical Noise: ≤ 60 Milliohms (mΩ) at rated speed
• Contact Metallurgy: High-Purity Gold-on-Gold contacts
• Lead Wire Material: Flexible stranded Silver-Plated Copper, Teflon insulated, color-coded
• Lead Wire Gauges:
  - 10A Circuits: 16 AWG
  - 5A Circuits: 20 AWG
  - 2A Circuits: 26 AWG
• Standard Lead Wire Length: 48 inches [1,219 mm] on both rotor and stator ends
• Internal Bearings: Dual pre-lubricated high-precision miniature ball bearings
• Ingress Protection: Internal splash seals for dust/moisture resistance; optional external IP65 enclosure available
• Operating Temperature Envelope: -40°C to +80°C [-40°F to +176°F]
• Mechanical Mounting: Flanged capsule housing with pre-drilled bolt pattern; direct coaxial integration compatible with DSTI GP, LT, and SE fluid rotary unions.