Skip to main content
100% Maintenance-free ELECTRICAL ROTARY GROUND

ROTOCON ERG-400


« Back to ROTOCON Electrical Rotary Grounds, ERG & MC-Series

ROTOCON ERG-400 Model Specifications

» RoHS / CE Compliant versions available» 100% maintenance-free and arc-free design for uninterruptible machine output and usage
» Five robust mounting options, to meet the most demanding applications» Frequently surpass 500 million revolutions without demonstrating a change in electrical resistance or performance

The high-current ERG Series by Meridian Laboratory provides the perfect ground for rotational welding, plating, polishing, and other high-current applications that require rotation. The flexible new design offers a number of robust options and mounting variations to meet your exact specifications.

Contrary to conventional brushed rotary grounds, Meridian Laboratory’s ERG Series are arc-free, do not have internal friction, and do not require greasing or any type of maintenance. All ROTOCON rotary grounds are built environmentally sealed, and with 304SS corrosion proof housings to ensure a long service life, even in the most challenging manufacturing environments and chemical exposure.

ERG-400s are also available in RoHS / CE Compliant versions.

  • HIGH CURRENT ROTARY GROUND

Part #ERG-400-01ERG-400-02ERG-400-11ERG-400-21ERG-400-22
Shaft Side

3/8"-16 Hole

Flange

3/8"-16 Stud

3/8"-16 Stud

Flange

Body Side

3/8"-16 Stud

3/8"-16 Hole

3/8"-16 Stud

Flange

Flange

Hardware Included

2x LockWasher, 1x Hex Bolt, 1x Nut

1x LockWasher, 1x Hex Bolt

2x LockWasher, 2x Nut

1x LockWasher, 1x Nut

None

RoHS ComplianceAdd -R to end of part number (ERG-400-xx-R)

Request an ERG-400 quote


ERG-400 Datasheet with Mounting Instructions

RoHS and CE Compliance Declaration


RPM (Continuous)1,750
MOUNTING & TERMINATIONSModel dependent, click here for specifications sheet
MAXIMUM SIDELOAD WEIGHT CAPACITY25 Lbs. (11.3 Kgs)
HOUSING304 Stainless Steel
OPERATIONCan be operated in any direction or orientation
MAINTENANCENone - features permanently lubricated bearings, brush-free design requires no user maintenance of any type
DIMENSIONSModel dependent, click here for specifications sheet
LONGEVITYAll models are warranted one full year; most models tested up to 500 million total revolutions* (with proper installation and used within operating parameters)
DC CURRENT400A
AC CURRENT350A, f = 60Hz
300A, f = 120Hz
MAX FREQUENCY0 TO 250 MHz* (Contact Meridian Laboratory for max current rating)
MAX CONTINUOUS RPM1,750
OPERATING TEMPStandard Versions: -20°C TO 70°C
RoHS / CE Versions: +2°C TO 70°C
HOUSING MATERIAL304 Stainless Steel
CONTACT RESISTANCE<1mΩ
DYNAMIC RESISTANCE<1mΩ (0 TO 1,750 RPM)
AMBIENT TEMPERATURENot to exceed 160˚F (70˚C)
IP RATINGStandard is IP65, Available up to IP68
RoHS COMPLIANCEOptional, RoHS /CE Compliancy Available
  • Extremely low contact resistance (<1mΩ (0 TO 1,750 RPM))
  • Maintenance free – does not require grease or adjustment of any type
  • Unaffected by RPM and use over time
  • Environmentally sealed
  • Operates in any direction or orientation
  • Five different versions allow for multitude of mounting options

Watch the video below to see first hand the benefits which ROTOCON rotary grounds can provide compared to metal-on-metal contacts.

  • Rotary welding
  • Electro-plating
  • Plasma cutting
  • Rotary magnetrons/sputtering deposition
  • Cable reels
  • Lightning strike ground (up to 100,000A tested)
  • Electro-polishing

Additional High-Current ROTOCON Rotary Grounds

MC Series

ModelMax Current (Continuous)Total LengthBody LengthDiameterStud Size/Thread
ERG-400400AProduct specifications for the ERG-400 are dependent on the mounting option your project requires, learn more from the ERG-400 Product Page
ERG-800800AProduct specifications for the ERG-800 are dependent on the mounting option your project requires, learn more from the ERG-800 Product Page
MC-10001000A8.62"3.62"3.00"1"-8
MC-20002000A14.5"6.25"4.50"1-1/2"-6
MC2F-3000 3000A10.00"6.375"5.00"Flange Mount
MC2F-60006000A10.01"8.41"8.00"Flange Mount
ERG-1000010000A7.94"4.28"10.61"Flange Mount
Need a different size or arrangement? Not all models are listed, contact Meridian Laboratory for other models, and specific information.

Request a ROTOCON quote