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ROTOCON® MC2F-6000 Model Specifications

»  Provides consistent low and stable resistance for high current applications»  Robust industrial design provides reliable long lasting performance
»  Requires ZERO grease or routine maintenance»  Remains unaffected by RPM or total number of revolutions

The high-current MC Series by Meridian Laboratory provides the perfect ground for rotational welding, plating, polishing, and other high-current applications that require rotation. Designed to withstand 100% duty cycles in continuous manufacturing and production processes, without interruption or downtime.

Contrary to conventional brushed rotary grounds, Meridian Laboratory’s MC 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.

For applications requiring a through-bore, the ROTOCON ERGT Series electrical rotary grounds are listed in the chart below.

RPMModel dependent, see model specifications below*
MOUNTINGEnd of shaft with threaded stud or flange, or with set screws onto shaft (through-hole ERGT Series) Click here for installation and best practices video.
HOUSING304 Stainless Steel
OPERATIONCan be operated in any direction or orientation
MAINTENANCEFeatures permanently lubricated bearings, brush-free design requires no user maintenance

MC2F-6000 Model Specifications

AMPERAGEModel dependent, see specifications chart - 100% overload allowed for <60 seconds
FREQUENCYDC to 1GHz - Contact Meridian Laboratory for ampacity ratings at higher frequencies
ROTATING CONTACT RESISTANCESame as stationary contact resistance (<0.1mΩ)
OPERATIONIntrinsically immune to internal arcing

MC2F-6000 Model Specifications

Video: Installing Your ROTOCON MC Series High Current Rotary Ground

YouTube video

This video shows installation and best practices when installing your ROTOCON MC Series high current rotary ground clamp. Meridian Laboratory’s full lineup of single contact, high current rotary ground clamps provide a consistent, maintenance-free contact unaffected by RPM or the total number of revolutions. Contrary to conventional brushed rotary grounds, Meridian Laboratory’s MC Series are arc-free, do not have internal friction, and do not require greasing or any type of maintenance.


  • Rotary welding
  • Electro-plating
  • Rotary cutting
  • Rotary magnetrons/sputtering deposition
  • Cable reels
  • Electro-polishing

Video: ROTOCON ERG – Electrical Rotary Ground Contact Resistance Demonstration

Contact Meridian Laboratory – High-Performance Rotary Electrical Connectors with Zero-Noise, Maintenance-Free Operation in Industrial Environments

Through-Bore Models (ERGT Series)

MCT Series

Model #
(Specify preferred hole diameter as XXXX)
Minimum Hole Diameter (HD)Maximum Hole Diameter (HD)Max Current (Amps)Total Length (TL)Outside Diameter (OD)Number of Conductive Studs on BodyStud Size / ThreadRPM (Continuous / Momentary)
ERGT-500-XXXX0.250"2.000"500A4.55"4.3"11/2"-13200 / 400
ERGT-1000-XXXX0.250"2.000"1000A4.55"4.3"21/2"-13200 / 400
ERGT-1500-XXXX0.250"2.000"1500A4.55"4.3"31/2"-13200 / 400
ERGT-2000-XXXX0.250"2.000"2000A4.55"4.3"41/2"-13200 / 400
ERGT-2000-XXXX1.000"2.500"2000A5.187"6"41/2"-13150 / 300
ERGT-3000-XXXX1.000"1.000"3000A5.187"6"61/2"-13150 / 300
NoteThrough-Hole diameter can be specified at time of order to exact dimension; standard tolerance of bore is +0.003" / -0.000"Assumes 100% duty cycle of direct current (DC); alternating current (AC) will have lesser ampacity ratingAll conductive studs must be used to guarantee rated amperage maximum
Need a different size or arrangement? Custom models are available, contact Meridian Laboratory for other models, and specific information.

Click here for installation and best practices page.