279587 - Miller 12-Inch Spool Hub for Millermatic/Multimatic 255

Genuine Miller Spool Hub for 255 Series Machines

The Miller 279587 Hub Spool is a critical component designed specifically for the Millermatic 255 and Multimatic 255 welding systems. This assembly allows operators to securely mount 12-inch diameter wire spools, which are standard for industrial and heavy-duty fabrication applications. By utilizing genuine Miller OEM parts, users ensure that the mechanical tolerances of the wire feed system are maintained, preventing issues such as spool wobble or inconsistent wire tension that can lead to burn-back or bird-nesting.

Constructed from high-durability materials, this hub is engineered to support the weight of full 12-inch wire spools, which typically weigh between 33 and 44 pounds depending on the material. The hub mechanism provides the necessary friction and locking capability to keep the spool in place during high-speed welding operations. Proper spool mounting is essential for the longevity of the drive motor and drive rolls, as it minimizes unnecessary drag while ensuring the wire pays off smoothly into the liner.

For maintenance and repair operations (MRO), using the correct hub spool identifier (279587) guarantees fitment without modification. This part is a direct replacement for the original equipment supplied with the machine or can be used to replace a damaged or worn hub. It is an essential spare part for shops running high volumes of wire through their Miller 255 units, ensuring minimal downtime during spool changes.

Technical Specifications

• Part Number: 279587
• Compatibility: Millermatic 255, Multimatic 255
• Spool Capacity: 12-inch diameter spools
• Function: Securely holds and rotates wire spool