Model 330 Brushless Slip Ring

Conductors: Three Conductor
Amps: 3@30
Volts: 250

The Mercotac® model 330 brushless slip rings are an excellent solution for a variety of applications. One example is in crane booms, where they enable the continuous transmission of power, control signals, and data between the base and rotating boom. These units can also support components like lights, sensors, and cameras, as well as extension, retraction, and rotation functions.

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

Model 330 Product Specifications

Details:

Disconnects are included
55251 Large Flag Disconnect (Qty. 3)
55252 Large Straight Disconnect (Qty. 3)
55253 Shrink Tube (Qty. 3)

Available with stainless steel ball bearing (330-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)
330	3	Anodized Aluminum	Chrome Steel	300	250	30	1200	Min -20 (-29) Max 140 (60)	100	<1	>25
330-SS	3	Anodized Aluminum	Stainless Steel	300	250	30	1200	Min -20 (-29) Max 140 (60)	100	<1	>25

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

Description: Boot Kit Parts
Item #: 57430

Vinyl Boot Kit for dust and splash protection
IP51 protection rating

Description: Boot Kit Shown Assembled
Item #: 57430

Vinyl Boot Kit for dust and splash protection
IP51 protection rating

Description: Large Flag Disconnect, Insulated
Item #: 55251

16 AWG - 14 AWG
Qty. 3 included
Maximum recommended Amps: 15

Description: Large Straight Disconnect, Non-Insulated
Item #: 55252

16 AWG - 14 AWG
Qty. 3 included
Maximum recommended Amps: 15

Description: Shrink Tube
Item #: 55253

Qty. 4 included

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 330 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

Bushing Mount

Horizonal Mount to Body

Good mounting method
(but vertical orientation is better)

Adaptor Mount to Body

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

Horizonal Mount to Bushing

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

Thermal Insulated 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

Best mounting method.

Bottom Mount to Bushing

Floating Torque Arm Mount to Body

Protective Housing Mount to Body

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

Vibration Isolation Mount to Body

With flexible bellows.

Vibration Isolating Mount to Body

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 330 Standard Wire Connections

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 330 Wire Connections with Optional Boot Kit

Wire connections, mounted inside rotating shaft.

Stationary end showing optional boot kit.

Cutaway view.

Wire connections, mounted inside rotating shaft.

Stationary end showing optional boot kit.

The Mercotac model 330 brushless slip rings are versatile components that find applications beyond crane booms. They are well-suited for agriculture equipment, welding reels, and motors providing continuous power, control signals, and data transmission between stationary and rotating components.

In agriculture equipment, the model 330 slip rings ensure reliable performance and precise control, supporting various machinery such as irrigation systems, seeders, harvesters, and sprayers. They contribute to the efficiency and productivity of agricultural operations.
For welding reels, these slip rings facilitate smooth and efficient welding processes in industries like automotive, construction, and manufacturing. They transmit power, control signals, and data between the stationary welding equipment and the rotating welding reel.

Overall, the Mercotac model 330 brushless slip rings offer dependable solutions in crane booms, agriculture equipment, and welding reels. Their advanced technology and robust construction enhance power and signal transmission, optimizing performance in these applications.

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.

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

Model 330 Brushless Slip Ring

Model 330 Product Specifications

Dimensions

Specifications

Accessories

Mounting

Connections

Applications

Learning Center

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