Neutral Buoyancy 2/4/6/8‑Core Underwater ROV Cable | 24AWG & 26AWG Power & Signal Tether Cable
. Available in 2, 4, 6, and 8-core configurations for power and data
. Kevlar-reinforced for high tensile strength and break resistance
. Foam PUR jacket ensures neutral buoyancy and abrasion protection
. Water-blocking construction prevents leaks and protects electronics
. Flexible tinned copper conductors optimized for reel management
Your ROV is only as capable as the tether connecting it to the surface. A heavy, sinking cable creates drag, drains battery life, and destabilizes your vehicle’s hover. A floating cable creates a hazard on the surface.
At Shanghai Ruosheng, we engineer our Neutral Buoyancy ROV Tether Cables to hit the “Goldilocks” zone—suspending perfectly in freshwater or saltwater. Designed for inspection class ROVs, aquaculture robots, and underwater drones, this tether minimizes drag and maximizes maneuverability.
Whether you need a lightweight 2-core setup for basic video or an 8-core hybrid for complex power and data transmission, we provide the durability required for deep-water missions without the bulk.
Engineered for the Deep: Key Features
True Neutral Buoyancy
We utilize a specialized low-density foam Polyurethane (PUR) or Thermoplastic Elastomer (TPE) jacket. This material composition ensures the cable density matches the water, allowing your ROV to move freely without fighting the weight of its own tail.
Kevlar-Reinforced Tensile Strength
Underwater environments are unforgiving. Sharp rocks, coral, and strong currents pose constant threats. Our cables are reinforced with Aramid fiber (Kevlar) braiding. This takes the mechanical strain off the copper conductors, allowing the tether to withstand significant pull force (breaking strength customizable up to 100kg+) while maintaining electrical integrity.
Zero-Water Ingress Design
Water and electricity don’t mix. Our cables feature water-blocking fibers and pressure-resistant insulation. Even if the outer jacket is nicked or abraded, the internal structure prevents water from traveling up the cable, protecting your topside electronics and the ROV’s internal systems.
High-Flexibility for Reel Systems
Stiff cables are a nightmare to manage. Drawing from Shanghai Ruosheng’s expertise in high-flex drag chain cables, this tether uses fine-stranded tinned copper. It remains flexible even in cold deep-water temperatures, resisting kinks and coiling easily on manual or automatic winches.
Technical Specifications
We offer standard configurations (24AWG / 26AWG) and fully custom solutions based on your depth and power requirements.
|
Feature |
Specification Details |
|---|---|
|
Core Options |
2, 4, 6, 8 Cores (Twisted Pairs available for interference reduction) |
|
Conductor Gauge |
24AWG, 26AWG (Custom sizing available upon request) |
|
Conductor Material |
Oxygen-free Tinned Copper (Fine Stranding for flexibility) |
|
Insulation |
High-density PE or TPE (Pressure resistant) |
|
Outer Jacket |
Foam PUR / TPU (Matte finish, non-adhesive, abrasion-resistant) |
|
Tensile Strength |
50kg – 200kg (Dependent on Kevlar reinforcement level) |
|
Water Depth Rating |
Designed for 300m+ operations (Pressure tested) |
|
Temperature Range |
-30°C to +80°C |
|
Buoyancy |
Neutral (Freshwater/Seawater adjustable) |
|
Signal Type |
Suitable for Power, RS485, Ethernet, Analog Video |
Ideal Applications
- Observation ROVs: Blue Robotics BlueROV2, Fifish, Chasing, and custom builds.
- Pipe & Dam Inspection: Durable jacket resists abrasion against concrete and metal.
- Aquaculture: Safe for use around nets and marine life.
- Environmental Monitoring: Reliable data transmission for long-term submerged sensors.
Frequently Asked Questions (FAQ)
Q: Can you customize the specific gravity/buoyancy of the cable?
A: Yes. While our standard ROV cables are designed for neutral buoyancy in seawater, we can adjust the jacket density or add foam fillers to achieve slight positive or negative buoyancy depending on your specific mission requirements.
Q: Is this cable suitable for Gigabit Ethernet transmission?
A: For high-speed data (HD video/Ethernet), we recommend our twisted pair configurations (usually 8-core / 4-pair) with proper shielding. We can adhere to CAT5e or CAT6 standards within the tether structure to minimize crosstalk over long distances.
Q: What is the Minimum Order Quantity (MOQ) for a custom length?
A: Shanghai Ruosheng specializes in supporting both prototype and production runs. For standard neutral buoyancy cables held in stock, MOQs are very low. For fully custom core counts or colors, please contact our engineering team for a quote.
Q: How does the jacket handle UV exposure?
A: Our PUR/TPU jackets are UV stabilized. They will not crack or degrade even if the tether is left exposed to direct sunlight on a boat deck or reel system for extended periods.
Q: Do you offer pre-installed connectors?
A: Yes, we can terminate cables with standard industry connectors (like SubConn, Wet-con, or custom molds) upon request, testing the assembly for water tightness before shipping.
