Mercotac supplier in Romania

For Mercotac we quote brushless slip rings with one conductor 110 and 1250, with two conductors 205 and 230, models 430 and 830 and the Versatac range; we need the model, current, voltage, speed and mounting method.

Founded in 1978 · Headquarters: Carlsbad, California, USA

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Who is Mercotac and what does it make?

Mercotac is an American manufacturer of brushless slip rings, based in Carlsbad, California, active since 1978. A slip ring transmits current or signal between a fixed part and a rotating one; at Mercotac the contact is not made through sliding brushes but through a liquid metal molecularly bonded to the contacts, and the units contain elemental mercury. Contact resistance stays below one milliohm and does not vary with rotation, which is why the models are used both for power and for low-level signals, thermocouples or strain-gauge transducers. For a quotation, send us the unit model, for example 230, 430 or 1250.

The range is chosen by the number of conductors. The one-conductor models 110, 104, 105 and 110-T serve for earthing shafts and discharging static loads, for example on motors in HVAC installations and those fed by a variable frequency drive, where they protect the bearings. Model 130 carries 30 A, while the 1250 and 1500 series, of 250 A and 500 A, work on welding cable reels and on electroplating electrodes. With two conductors there is the 205 series for sensors and low powers, models 230 (30 A, 250 V) and 235 (30 A, 500 V) and model 215-2K, 15 A at 2,000 V, used in ultrasonic welding.

For mixed power and signal circuits, model 430 has two 4 A paths and two 30 A paths at 250 V and suits heated rollers, where it carries both the supply to the heating elements and the thermocouple signal. Models 630 and 830 have two 4 A paths and four, respectively six, 30 A paths, for rotary tables, robots, semiconductor equipment and wind turbines, and the Versatac range, 20 A and 500 V, is made in configurations from 2 to 22 channels. The units need no maintenance but are sensitive to vibration: where vibration is present a mounting that isolates them is used. For another number of conductors or for unusual voltages and currents, Mercotac also makes custom versions.

What do we supply from the Mercotac range?

Product	Description
One-conductor slip rings (104, 105, 110, 110-T, 130, 1250, 1500)	The 4 A and 10 A models earth shafts and discharge static loads on HVAC motors and on motors with a variable frequency drive, protecting the bearings. Model 130 carries 30 A, while the 1250 (250 A) and 1500 (500 A) series supply welding cable reels and electroplating electrodes.
Two-conductor slip rings (205, 215-2K, 230, 235)	The 205 series, 4 A, is for sensors and low powers, model 215-2K, 15 A at 2,000 V, for ultrasonic welding, and models 230 (30 A, 250 V) and 235 (30 A, 500 V) for fans, packaging machines, electric heating and lifting equipment.
Slip rings with four and with six or more conductors (430, 435, 630, 830)	Model 430 has two 4 A paths and two 30 A paths at 250 V, for power and signal on heated rollers, model 435 carries 30 A at 500 V, and 630 and 830 have two 4 A paths plus four, respectively six, 30 A paths, for rotary tables and robots.
Versatac family	Versatac slip rings, 20 A and 500 V, in 2, 4 and 8 channel versions and in other configurations from 2 to 22 channels, chosen when you need several power circuits in a single rotary assembly, for example on a rotary table or on a machine with several consumers.

Why Mercotac?

Liquid metal contact, no brushes — contact resistance below one milliohm, constant during rotation
Maintenance-free — no brushes to replace and no rings to clean
Clean signal transmission — suited to thermocouples, strain-gauge transducers and low-level data
Currents from 4 A to 500 A — from sensors to welding cable reels
From 1 to 22 channels — standard models, the Versatac range and custom versions

Which Mercotac codes and series are requested most often?

Code	Description
104	One-conductor slip ring, 4 A, for earthing shafts
105	One-conductor slip ring, 4 A
110	One-conductor slip ring, 10 A, for earthing shafts
110-T	One-conductor slip ring, 10 A
130	One-conductor slip ring, 30 A
1250	One-conductor slip ring, 250 A, for welding cable reels
1500	One-conductor slip ring, 500 A
205	Two-conductor slip ring, 4 A, for sensors
215-2K	Two-conductor slip ring, 15 A, 2,000 V
230	Two-conductor slip ring, 30 A, 250 V
235	Two-conductor slip ring, 30 A, 500 V
430	Four-conductor slip ring, 2 × 4 A and 2 × 30 A, 250 V
435	Four-conductor slip ring, 30 A, 500 V
630	Six-conductor slip ring, 2 × 4 A and 4 × 30 A
830	Eight-conductor slip ring, 2 × 4 A and 6 × 30 A
Versatac	20 A, 500 V slip rings, from 2 to 22 channels

Where is Mercotac equipment used?

Welding and electroplating — cable reels and electrodes supplied through the 1250 and 1500 series
Electric motors with variable frequency drive — shaft earthing with models 110 and 104
Packaging and thermoforming — heated rollers supplied and monitored through model 430
Wind energy — transmission of power and signals in turbines, with models with six or more conductors
Robotics and automation — rotary tables and arms that transmit current and signal in continuous rotation

How do we supply Mercotac in Romania?

We can quote Mercotac slip rings with one, two, four or more conductors, Versatac models and custom versions. For an accurate quotation send us the model from the unit or from the machine documentation (for example 205, 430 or 1250), the number of conductors, the current and voltage on each path, the maximum speed and how the unit is fixed on the machine. We bring slip rings in to order, through import, usually in 1–4 weeks, and 24–72 h when the item is available locally or at the supplier. If the application has vibration, mention it in the request.

We quote Mercotac units as a replacement part or for new projects, while mechanical integration on the shaft and vibration isolation are established by the machine designer.

Frequently asked questions about Mercotac

What does Mercotac make?

Mercotac makes brushless slip rings at Carlsbad, California, in which the current passes through a liquid metal molecularly bonded to the contacts. The range runs from one-conductor models for earthing shafts to units with six or more paths, plus the Versatac range and custom versions.

How do I choose a Mercotac slip ring?

The choice starts from the number of conductors, the maximum current and voltage on each path and the speed required. For example, model 230 carries 30 A at 250 V on two paths, and 235 carries 30 A at 500 V. Also send us the space available and how the unit is fixed on the machine, so we can propose the right model.

Do you supply Mercotac in Romania and within what lead time?

We bring Mercotac slip rings in to order, through EU supply channels or through import, usually in 1–4 weeks. When the model requested is available locally or at the supplier, delivery can start in 24–72 h. For custom versions, depending on specification, the lead time may be longer.

Can I replace a brush slip ring with a Mercotac model?

Mercotac units are designed to replace slip rings with brushes or with precious metals. To propose the model we need the number of circuits, the current and voltage on each, the speed, the space available and the vibration level, because vibration shortens the life of liquid-metal units.

What data do I send for a Mercotac slip ring quotation?

The model from the unit, for example 430 or 1250, or, for a new project, the number of conductors, the current and voltage on each path, the maximum speed, the working temperature, whether you transmit power or a low-level signal and the mounting method. If the machine vibrates, tell us, so that we provide a mounting that isolates the unit.

How do I request a Mercotac quotation?

Send the Mercotac code from the nameplate and the quantity; we reply in English with availability and the lead time written in the quotation.