Maintenance-free ELECTRICAL ROTARY GROUND

ROTOCON® MC-2000

ROTOCON® MC-2000 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.

Specifications
Options

Mechanical
Electrical
Installation

RPM	Model dependent, see model specifications below*
MOUNTING	End 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.
HOUSING	304 Stainless Steel
OPERATION	Can be operated in any direction or orientation
MAINTENANCE	Features permanently lubricated bearings, brush-free design requires no user maintenance

MC-2000 Model Specifications

AMPERAGE	Model dependent, see specifications chart - 100% overload allowed for <60 seconds
FREQUENCY	DC to 1GHz - Contact Meridian Laboratory for ampacity ratings at higher frequencies
STATIONARY CONTACT RESISTANCE	<0.01mΩ
ROTATING CONTACT RESISTANCE	Same as stationary contact resistance (<0.1mΩ)
ELECTRICAL NOISE	<0.01uV
OPERATION	Intrinsically immune to internal arcing

MC-2000 Model Specifications

Video: Installing Your ROTOCON MC Series High Current Rotary Ground

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.

Mounting attachment C-clamps
Custom mounting flanges
Liquid cooling for high temperature applications
Fiber Optic Rotary Joint (FORJ)
Rotary Union
Corrosion Protection (Gold Plate)

Advantages

Extremely low contact resistance (<1mΩ (0 TO 1,000 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

Applications

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

Video: ROTOCON ERG – Electrical Rotary Ground Contact Resistance Demonstration

Contact Meridian Laboratory

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 Body	Stud Size / Thread	RPM (Continuous / Momentary)
ERGT-500-XXXX	0.250"	2.000"	500A	4.55"	4.3"	1	1/2"-13	200 / 400
ERGT-1000-XXXX	0.250"	2.000"	1000A	4.55"	4.3"	2	1/2"-13	200 / 400
ERGT-1500-XXXX	0.250"	2.000"	1500A	4.55"	4.3"	3	1/2"-13	200 / 400
ERGT-2000-XXXX	0.250"	2.000"	2000A	4.55"	4.3"	4	1/2"-13	200 / 400
ERGT-2000-XXXX	1.000"	2.500"	2000A	5.187"	6"	4	1/2"-13	150 / 300
ERGT-3000-XXXX	1.000"	1.000"	3000A	5.187"	6"	6	1/2"-13	150 / 300
Note	Through-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 rating			All 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.

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