TECHNICAL FEATURES
800 AMP ROTARY GROUND SERIES
- Rated to 800 amps DC continuous at 100% duty cycle
- Provides consistent and stable current without fluctuation
- Maintenance-free without routine grease, cleaning, or brush replacement
- Sensitive environment, non-mercury rotary ground (RoHS) versions available
ROTOCON ERG-800 rotary grounds are rated for 800 amps continuous, ensuring stable, consistent current delivery in rotating applications without fluctuation, regardless of position, speed, orientation, or total revolutions. As a superior alternative to traditional metal-on-metal rotary grounds, including the Tweco RG-240, Lenco LRG-240, and similar solutions, ROTOCON ERG-800 rotary grounds offer greater durability, reliability, and long-term performance.
Designed for rotary welding, electroplating, electropolishing, cutting, and other high-current industrial applications, ROTOCON ERG-800 rotary grounds feature four versatile mounting configurations for easy integration. Unlike brushed and metal-on-metal contacts, ROTOCON rotary grounds are brushless and maintenance-free, eliminating the need for brush replacements, adjustments, or grease application. Built for demanding industrial environments, they are constructed from high-performance materials to ensure long-lasting, trouble-free operation.
Advantages
Why Choose ROTOCON 800 Amp Rotary Grounds?
General Specifications
ERG-800 Rotary Ground Specifications
AMPERAGE
800
AMPS CONTINUOUS DC
Amperage refers to the continuously rated current specification of the product at direct current (DC) to low/common frequency levels (<120 Hz).For elevated current, temperature, or frequency applications - please contact Meridian Laboratory for more information.
CONTACT RESISTANCE
<0.03mΩ
Contact resistance refers to the electrical resistance between the stationary and rotating portions, internal to the ROTOCON rotating electrical connector. This is measured without additional cabling or connectors, and is internal to the units themselves. This is measured stationary or rotating, regardless of rotational direction, speed, or orientation.
DUTY CYCLE
100%
CONTINUOUS
Duty cycle refers to the duration of time at which the ROTOCON slip ring can operate within a maximum specified condition. Not all ROTOCON slip ring and rotary grounds are tested or guaranteed while in an absolute maximum condition of all specifications (rotational speed, amperage, etc.) simultaneously. For more information or application specific questions, please contact Meridian Laboratory.
Configurations
ERG-800 Standard Models
| Part # | Mounting | Amperage | Total Length | ROHS | RPM | Part Downloads | 2D Download Action Type | File Datasheet | Model Download (3D STP) | Photos |
|---|---|---|---|---|---|---|---|---|---|---|
| Custom Rotary Grounds | End of Shaft, Through-Hole | Up to 10,000A | Available with RoHS Compatability | Contact Us | ||||||
| ERG-800-01 | End of Shaft | 800A | 4.5" | No | 1,000 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-800-01.pdf | Yes | https://placehold.co/1200x800/EEE/31343C | |
| ERG-800-01-R | End of Shaft | 800A | 4.5" | Yes | 1,000 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-800-01-R.pdf | Yes | https://placehold.co/1200x800/EEE/31343C | |
| ERG-800-11 | End of Shaft | 800A | 5.4" | No | 1,000 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-800-11.pdf | Yes | https://placehold.co/1200x800/EEE/31343C, https://placehold.co/600x601/EEE/31343C, https://placehold.co/800x801/EEE/31343C | |
| ERG-800-11-R | End of Shaft | 800A | 5.4" | Yes | 1,000 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-800-11-R.pdf | Yes | https://placehold.co/1200x800/EEE/31343C | |
| ERG-800-21 | Flange | 800A | 4.74" | No | 1,000 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-800-21.pdf | Yes | https://placehold.co/1200x800/EEE/31343C | |
| ERG-800-21-R | Flange | 800A | 4.74" | Yes | 1,000 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-800-21-R.pdf | Yes | https://placehold.co/1200x800/EEE/31343C | |
| ERG-800-31 | End of Shaft | 800A | 5.32" | No | 1,000 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-800-31.pdf | Yes | https://placehold.co/1200x800/EEE/31343C | |
| ERG-800-31-R | End of Shaft | 800A | 5.32" | Yes | 1,000 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-800-31-R.pdf | Yes | ||
| ERG-800-41 | Clamp | 800A | 8.7" | No | 50 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-800-41.pdf | Yes | https://placehold.co/1200x800/EEE/31343C | |
| ERG-800-41-R | Clamp | 800A | 8.7" | Yes | 50 | Standard Model | MERIDIAN-LABORATORY-ROTOCON-ERG-800-41-R.pdf | Yes | https://placehold.co/1200x800/EEE/31343C |
MOUNTING
800 Amp Rotary Ground Mounting Options
ERG-800-01
ERG-800-11
ERG-800-21
ERG-800-41
FAQs
Common Rotary Ground Questions
Does conductive grease need to be applied when installing a ROTOCON rotary ground?
No. The application of grease of any kind, including conductive grease, between the conductive shaft or mating surfaces and the ROTOCON rotary ground is not advised. Meridian Laboratory recommends cleaning and degreasing both the mating surfaces and rotary ground prior to installation. If surface oxide is present on either component, light abrasion with 320 grit sandpaper or Scotch-Brite© Heavy Duty Green pads (or equivalent product) is recommended to ensure a robust electrical contact.
Can a ROTOCON be used in corrosive environments?
Yes, ROTOCON rotary electrical connectors and rotary grounds are built with durable, industrial-grade materials, making them suitable for many challenging environments. Depending on the level of exposure to corrosive substances, a standard model may be sufficient for your application. Meridian Laboratory also offers upgrades to enhance ingress protection (IP rating) and chemical resistance. For extreme cases, Meridian Laboratory has the ability to deliver custom ROTOCONs to meet the challenging environmental requirements of your application. Contact us to discuss your project and find the best solution for your needs.
Do you offer a rotary ground with an integrated rotary gas union?
Yes, Meridian Laboratory offers a standard model ERGT-800-1PRU, offering the functionality of being both a rotating electrical ground and a gas/air union combined into one solution. We also offer custom rotary grounds and rotary unions based on the specific needs of your application. Please visit our Rotary Union Combination page or contact us to learn more.
What is the expected lifespan of a ROTOCON rotary ground?
ROTOCON rotary grounds are built to provide reliable, uninterrupted electrical contact over an extended operational lifespan, frequently surpassing 500 million revolutions without requiring cleaning, conductive grease, or brush maintenance. Our designs emphasize long-term performance and dependability, using carefully selected materials and components to ensure a robust, maintenance-free solution.
Can a ROTOCON rotary ground be used as a mechanical bearing / turntable?
While it is expected that a certain amount of cable weight is present on the ROTOCON rotary grounds, they are not intended to be a load-bearing device used to support the objects being grounded and rotated. For exact ratings and more information, please see the model specific datasheets or contact us with any questions relative to your application.
What is the maximum voltage a ROTOCON can carry?
Nearly all ROTOCON rotary electrical connectors and rotary grounds are rated to a minimum of 600V AC/DC, unless otherwise stated on their respective model specific datasheets. The maximum voltage rating is largely dependent on the product series of ROTOCON brushless slip rings,but generally speaking, standard models are offered with voltage ratings up to 3,500V AC/DC and custom models available up to hundreds of thousands of volts.
Purpose-built ROTOCON rotary grounds and slip rings have been built, certified, and used for lightning arc grounding devices and other medium to extra high voltage applications up to 800kV. For application specific requirements above our nominally rated ROTOCON rotary ground and slip rings, please contact us for more direct support.
Maximum voltage varies depending on the ROTOCON series and model. See individual datasheets for specific ratings.
Customization
ERG-800 Rotary Ground Customization Options
MOUNTING
APPLICATIONS & USES
Common Uses for ERG-800 Rotary Grounds
Rotary Welding & Cutting
Tanks, pipes, and other rotary welding applications require a rotary ground to maintain a stable current transfer while materials rotate during welding, enabling the production of stacked tubes and other welded components. Similarly, welding tables, positioners, and robotic welding systems rely on a consistent, reliable current transfer to ensure precision and quality while the workpiece or welder rotates or moves.
Rotational Plating & Polishing
During electroplating or electropolishing, parts are often rotated in the bath to ensure even coverage and a high-quality finish. Rotary grounds play a crucial role by delivering a steady, consistent electrical current to the workpiece or fixture throughout the rotation process.
Rotary Sputtering & Deposition
Rotating electrical grounds are essential in sputtering applications, providing a ground circuit for the rotating workpiece to ensure uniform material deposition onto the substrate. Maintaining stable ground resistance enhances process consistency and precision, leading to a higher-quality finished product.
Explore More
Related Products
Resources
Helpful Information
Get the details you need, explore our complete resource library on every slip ring series.