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Brushless Slip Ring Model 335

Conductors: Three Conductor
Amps: 3@30
Volts: 1500

The Mercotac® model 335 brushless slip rings are a great match for higher power applications such as electrical heating systems where electrical power is needed to transmit from a stationary power source to the rotating heating parts such as coils that are mounted to a shaft.

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 with robust metal construction
  • Long-lasting, energy efficient, and no maintenance
  • Made in the USA

PDF Spec Sheet CAD Download

Mercotac 335

Model 335 Product Specifications

335 Dimensions Diagram
    Details:
  • Disconnects are included
  • 55250 Large Straight Disconnect (Qty. 3)
  • 55251 Large Flag Disconnect (Qty. 3)
  • Available with stainless steel ball bearing (335-SS) (recommended for wet or corrosive environments)
  • Dust/Splash Boot Kit available.

Model No. Terminals Body Material Bearing Type Max. Rotational Torque
(gf-cm)		 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)
335 3 Anodized Aluminum Chrome Steel 700 500 30 500 Min -20 (-29)
Max 140 (60)		 100 <1 >50
335-SS Stainless Steel

"SS" designator indicates stainless steel ball bearing (recommended for wet or corrosive environments)

Description: Boot Kit Parts
Item #: 57335

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

Description: Boot Kit Shown Assembled
Item #: 57335

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

Description: Large Flag Disconnect, Insulated
Item #: 55251

  • 16 AWG - 14 AWG
  • Qty. 3 included
  • Maximum recommended Amps: 15
Mercotac Bootkit 2

Description: Large Straight Disconnect, Insulated
Item #: 55250

  • 16 AWG - 14 AWG
  • Qty. 3 included
  • Maximum recommended Amps: 15
Mercotac Bootkit 2

Description: Other Disconnects

  • Disconnects for other wire gauges are available and can be substituted for the standard disconnects(22-18 AWG and 12-10 AWG). See Ampacity Table

Model 335 is typically mounted by either the black body or the white plastic bushing on either end using a set screw or split clamp. When used horizontally, mount the Mercotac so the body of the connector rotates

Body Mount

Body Mount


Bushing Mount

Bushing Mount


Horizonal Mount to Body

Top Mount with Conductive Shaft

Good mounting method
(but vertical orientation is better)

Adaptor Mount to Body

Bottom Mount with Conductive Shaft

Use when the shaft diameter is smaller
than the body of the Mercotac.

Horizonal Mount to Bushing

Horizonal Mount with Conductive Shaft

Used if the shaft
cannot be fitted to the body diameter.

Thermal Insulated Mount to Bushing

Top Body Mount to Bushing

May be needed if thermal insulation is necessary.
Used if the shaft cannot be fitted to the body diameter.

Top Mount to Body

Horizonal Mount with Conductive Shaft

Best mounting method.

Bottom Mount to Bushing

Top Body Mount to Bushing

Floating Torque Arm Mount to Body

Horizonal Mount with Conductive Shaft

Protective Housing Mount to Body

Top Body Mount to Bushing

Recommended for wash-down or dirty environments.
Also recommended for food processing .

Vibration Isolation Mount to Body

Horizonal Mount with Conductive Shaft

With flexible bellows.

Vibration Isolating Mount to Body

Top Body Mount to Bushing

With floating drive coupling.

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.

Model 335 Standard Wire Connections

Mercotac 335 wiring

1. Wire connections, mounted inside rotating shaft.

2. Stationary end showing standard wire connections.

3. Wires crimp to terminals.
(Suggested tool: Thomas & Betts #WT 112M)





Model 335 Wire Connections with Optional Boot Kit



Mercotac 335 wiring

Wire connections, mounted inside rotating shaft.

Stationary end showing optional boot kit.

Mercotac 335 Wiring with Boot Kit

Cutaway view.

Mercotac 335 Wiring with Boot Kit

Wire connections, mounted inside rotating shaft.

Stationary end showing optional boot kit.

335

The Mercotac model 335 brushless slip rings are specifically designed for higher power applications like electrical heating systems, ensuring efficient and reliable power transmission to rotating heating parts. With their robust construction and advanced brushless design, these slip rings provide a dependable solution for precise temperature control and optimized heating performance. They find relevance in diverse industries, including manufacturing, automotive, and residential heating. Additionally, the model 335 slip rings are well-suited for laminating processes, the aerospace industry, and pressure sensing manufacturing.

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