407191 - Tweco 115V Wire Feed Motor Brush Assembly with Spring

Keep Your Wire Feeder Running Smoothly

There is nothing more frustrating than a wire feeder that stutters, slips, or stops right in the middle of a bead. Often, the culprit isn't the machine's board or the gun liner—it's the humble motor brush. The Tweco 407191 is the replacement brush assembly you need to get your 115V wire feed motor back to running like new. If you have noticed that your wire speed is fluctuating or the motor lacks the torque it used to have, worn-out brushes are a very likely cause.

Think of these brushes like the brake pads on your truck, but for electricity. They rub against the spinning part of the motor to deliver power. Eventually, they wear down. When they get too short, they can't make good contact, and your wire feeding becomes erratic. This replacement part comes as a complete assembly, meaning you get the fresh carbon brush and the spring already set up. The spring is vital because it pushes the brush against the motor; if your old spring is weak or the brush is worn, the connection breaks, and your weld quality suffers.

Installing the Tweco 407191 is a straightforward repair that can save you from buying a completely new motor or sending your machine out for expensive service. It is a genuine part, so you don't have to worry about it not fitting or wearing out prematurely. It is designed specifically for the 115V motors found in many Tweco and Thermal Arc feeders. Keeping a spare set of brushes in your maintenance kit is a smart move for any serious fabricator or shop manager. Don't let a ten-dollar part hold up a ten-thousand-dollar job.

Symptoms of Bad Brushes:

• Wire speed fluctuates without you touching the dial.
• The feeder motor makes a crackling or sparking sound.
• The motor taps or vibrates but won't spin.
• Complete loss of wire feeding despite the drive rolls being tight.

Get your machine back in the game with this high-quality replacement assembly.