Brushless Slip Ring Model 1250

Conductors: One Conductor
Amps: 250

Mercotac® model 1250 brushless slip rings are ideal for high current applications such as on electroplating electrodes and welding cable reels. We offer multiple 1250 model configurations as listed in the product specifications table and data sheet

Advantages:

  • Durable, compact, and low cost
  • Use for signal and/or power connections
  • Easy to install and replace
  • IP 51 protection rating with boot kit
  • Lightweight and made of robust metal construction
  • Long-lasting with no maintenance required
  • Made in the USA

PDF Spec Sheet CAD Download

Mercotac 1250

Model 1250 Product Specifications

1250 Dimensions Diagram
    Details:
  • Available in metric thread (1250-M / 1250-MS / 1250-MSX).
  • Available with stainless steel ball bearing (1250-SS / 1250-MS) (recommended for wet or corrosive environments).
  • Available with stainless steel body and bearing (1250-SX / 1250-MSX) (recommended for wet or corrosive environments).

Model No. Terminals Body Material Bearing Type Bearing Enclosure Mounting Thread Size Max. Rotational Torque
(gf-cm)
Mounting Nut Configuration (see chart) Max. Voltage Rating
(AC/DC)
Max. Current Rating
(Amps)
Max. Rotational Speed
(RPM)
Operating Temp.
Min °F (°C)
Max °F (°C)
Max. Frequency (MHz) Contact Resistance
(mΩ)
Circuit Separation
(MΩ)
1250 1 Anodized Aluminum Chrome Steel Seal 3/8 - 16 250 1 N/A 250 1200 Min -20 (-29)
Max 140 (60)
200 <1 N/A
1250-M Seal M10 x 1.5 2
1250-SC Seal 3/8 - 16 3
1250-SS Stainless Steel** (440C) Seal 3/8 - 16 1
1250-MS Seal M10 x 1.5 2
1250-LS*** Shield 3/8 - 16 125 1
1250-SX Stainless Steel (303) Seal 3/8 - 16 250 1
1250-MSX Seal M10 x 1.5 2
1250-LSX*** Shield 3/8 - 16 125 1
  • The body of the 1250 series Mercotac™ unit is electrically "hot" to the internal conductor
  • A stainless steel Bearing Type and/or stainless steel Body Material is recommended for wet or corrosive environments
  • "L" designator indicates low torque (may only be operated vertically)

Mounting Nut Configurations

Nut Configuration 1
Nut Configuration 2
Nut Configuration 3

Description: Boot Kit Parts
Item #: 57125

  • Vinyl Boot Kit for dust and splash protection
  • IP51 protection rating
Mercotac Bootkit 1

Description: Boot Kit Assembled
Item #: 57125

  • Vinyl Boot Kit for dust and splash protection
  • IP51 protection rating
Mercotac Bootkit 2

Mercotac Model 1250 is typically mounted by the threaded stud on either end or by the black body using a set screw. When mounting horizontally, mount the Mercotac so the body of the connector rotates.

Body Mount

Body Mount

Top Mount with Conductive Shaft

Top Mount with Conductive Shaft

Bottom Mount with Conductive Shaft

Bottom Mount with Conductive Shaft

Horizonal Mount with Conductive Shaft

Horizonal Mount with Conductive Shaft

Note: Low Torque models may only be operated vertically

Top Body Mount to Bushing

Top Body Mount to Bushing

Note: The housing of the 1250 series Mercotac is electrically "hot" to the internal conductor.

Installation Notes:

  • The up arrow should not point below horizontal.
  • Do not solder to or bend terminals.
  • Avoid lateral forces and mechanical loads (overly stiff or tight wires).
  • Do not rigid mount both ends of the Mercotac.
  • Limit the mounting eccentricity (runout / wobble) to .005" (.13mm).
  • Provide overload protection within the circuit.
  • Avoid vibration and bumping motions.

Without Boot Kit

Mercotac 1250 wiring

With Boot Kit

Mercotac 1250 Wiring with Boot Kit

1250

The Mercotac Model 1250 is a brushless slip ring designed for high current applications that require rotation, such as electroplating electrodes and welding cable reels. Its unique design uses high-quality, low-resistance materials to ensure a stable and reliable electrical connection that can handle high currents without overheating or damage. The Mercotac Model 1250 is ideal for these high current applications, as it provides a continuous supply of power, resulting in high-quality plating and strong welds. The connectors are easy to install and maintain, making them a cost-effective solution.

Check out our Applications page for more examples of how Mercotac products are utilized.

Learning Center

Guidance for using Mercotac® Brushless Slip Rings in engineering designs.

Learning Center Construction & Materials

Learn about our Mercotac® Construction & Materials: Body Materials, Bearing Types, Conductors/Terminals, Thread Sizes, Mounting Options.
Learn More

Learning Center Electrical Characteristics

Learn about Mercotac® Electrical Characteristics: Voltage Rating, Current Rating, Contact Resistance, Circuit Separation, Operating Temperature, Frequency.
Learn More

Learning Center Rotational Characteristics

Learn about Mercotac® Rotational Characteristics: Rotational Speed, Rotational Torque.
Learn More