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Single Contact Rotary Ground Clamp

ROTOCON MC Series

Innovative Maintenance Free 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 total number of revolutions.  Contrary to conventional brushed rotary grounds, Meridian Laboratory’s MC & MCT Series are arc-free, do not have internal friction, and do not require greasing or any type of maintenance. All single contact, high current ROTOCON MC & MCT Series rotary grounds are built with environmentally sealed and corrosion proof housings to ensure a long service life without maintenance.

Suitable for all environments and applications including welding, electro-plating, cutting, and other high current industrial applications, the ROTOCON MC & MCT Series is designed to withstand 100% duty cycles in continuous manufacturing and production processes.  The ROTOCON’s brush-free design eliminates all issues such as maintaining brush contact, application of conductive greases, and the elevated contact resistance associated with conventional brushed rotary grounds. With the MC Series, you will achieve a more consistent ground, with zero noise or elevated contact resistance over time and revolutions.

Unlike conventional brushed slip rings which rely on metal on metal contacts and are limited by RPM, electrically noisy, and require adjustment and maintenance for proper operation,  all ROTOCONs are brushless, functioning through a molecularly bonded viscous metal film which remains unaffected by speed, provides clean and noise-free electrical signals, and requires zero maintenance.

The MC series is available both in end of shaft and through-bore configurations in a range of amperage levels, dependent on your needs.  For applications requiring high frequency and high current, Meridian Laboratory offers specialized versions to accommodate for temperature rise due to eddy currents.

Watch the video below to see first hand the benefits which ROTOCON rotary grounds can provide.

RPMModel dependent, see model specifications below*
MOUNTINGEnd of shaft with threaded stud or flange, or with set screws onto shaft (through-hole MCT Series)
HOUSING304 Stainless steel
TERMINATIONSCable lug over threaded shaft, supplied with hardware and crush washers - flanges optional
OPERATIONCan be operated in any direction or orientation
MAINTENANCEFeatures permanently lubricated bearings, brush-free design requires no user maintenance
AMPERAGEModel dependent, see specifications chart - 100% overload allowed for <60 seconds
FREQUENCYStandard up to 250MHz, Optional up to 1GHz (with certain models & applications)
STATIONARY CONTACT RESISTANCE<0.01mΩ
ROTATING CONTACT RESISTANCESame as stationary contact resistance (<0.1mΩ)
ELECTRICAL NOISE<0.01uV
OPERATIONIntrinsically immune to internal arcing
AMBIENT TEMPERATURENot to exceed 160˚F (70˚C)
IP RATINGAvailable up to IP67
  • Extremely low contact resistance
  • Maintenance free
  • Unaffected by RPM and use over time
  • Environmentally sealed
  • Available in through-bore and end of shaft designs

 

  • Rotary welding
  • Electro-plating
  • Rotary cutting
  • Rotary magnetrons/sputtering deposition
  • Cable reels
  • Electro-polishing
  • Mounting attachment C-clamps
  • Custom mounting flanges
  • Liquid cooling for high temperature applications
  • Fiber Optic Rotary Joint (FORJ)
  • Rotary Union

End of Shaft Models (MC Series)

MC Series

ModelMax Current (Continuous)Total LengthBody LengthDiameterStud Size/ThreadWeightRPM (Continuous / Momentary)
Need a different size or arrangement? Not all models are listed, contact Meridian Laboratory for other models, and specific information.
MC-250250A4.50"2.00"1.63"3/8"-161.3 Lbs.1,750 / 3,000
MC-500500A5.25"2.31"2.00"9/16"-122.3 Lbs.1,250 / 2,500
MC-750750A6.62"2.62"2.50"3/4"-104 Lbs.750 / 1,500
MC-10001000A8.62"3.62"3.00"1"-815 Lbs.500 / 1,000
MC-20002000A14.5"6.25"4.50"1-1/2"-632 Lbs.350 / 500
MC2F-30003000A13.35"6.375"5.00"Flange Mount48 Lbs.250 / 450
MC-60006000A20.97"8.41"6.00"2"-4.584 Lbs.250 / 450

Through-Bore Models (MCT Series)

MCT Series

ModelHole Diameter Range (HD)Max Current (Amps)Total Length (TL)Outside Diameter (OD)Stud Size / ThreadRPM (Continuous / Momentary)
Need a different size or arrangement? Not all models are listed, contact Meridian Laboratory for other models, and specific information.
MCT-250 / HD0.125" - 1.250"250A4.00"3.00"3/8"-16500 / 750
MCT-500 / HD0.125" - 0.500"500A4.00"4.00"9/16"-12300 / 500
MCT-500 / HD0.500" - 1.000"500A4.83"4.00"9/16"-12300 / 500
MCT-500 / HD1.000" - 2.000"500A7.00"4.25"9/16"-12250 / 400
MCT-500 / HD2.000" - 2.500"500A6.00"4.50"9/16"-12250 / 400
MCT-1000 / HD0.500" - 1.500"1000A5.18"4.50"3/4"-10200 / 300
MCT-2000 / HD0.250" - 1.750"2000A8.50"5.50"3/4"-10100 / 300
MCT-3000 / HD0.250" - 1.750"3000A10.34"6.00"Flange100 / 200

Why Choose ROTOCON? Request a ROTOCON quote