Porter-Cable N031634 Carbon Brush – Genuine OEM Replacement Router Motor Brush

Part Number: N031634
Category: Router Parts → Motor Components → Carbon Brushes
Type: Porter-Cable N031634 Carbon Brush – Genuine OEM Replacement Router Motor Brush

The Porter-Cable N031634 Carbon Brush is a genuine OEM replacement motor brush designed for compatible Porter-Cable, DeWalt, Black & Decker, and DeVilbiss routers. This carbon brush transfers electrical current from the stationary brush holder to the rotating armature, allowing the router motor to operate efficiently. Because carbon brushes are wear items, they gradually wear down through normal use and require periodic replacement to maintain motor performance. Manufactured to original equipment specifications, the N031634 provides a direct-fit replacement for worn or damaged brushes and includes the attached wire lead. It is sold individually.

Key Features & Benefits

• Part Number: N031634
• Genuine OEM Porter-Cable replacement part
• Replacement carbon brush with attached wire lead
• Restores electrical contact between the brush and armature
• Helps restore motor power and performance
• Precision carbon construction for long service life
• Direct-fit OEM replacement
• Sold individually (most routers require two brushes)

Technical Specifications

Part Number: N031634

Manufacturer: Porter-Cable / Stanley Black & Decker

Product Type: Carbon Brush

Material: Carbon Graphite

Application: Router Motor

OEM Part: Yes

Quantity: Sold Individually

Includes: Carbon brush with wire lead attached

Compatible Applications

The Porter-Cable N031634 Carbon Brush fits numerous compatible router models, including:

Porter-Cable

• 7518
• 75182
• 7519
• 75192
• 7519EC
• 7536
• 75362
• 75362R
• 7537
• 75372
• 7538
• 7539

DeWalt

• DWP7518

It is also used on select Black & Decker and DeVilbiss router models that specify part number N031634.

Always verify your router model and original part number before ordering to ensure proper compatibility.

Function of the Carbon Brush

The N031634 Carbon Brush is designed to:

• Transfer electrical current to the rotating armature
• Maintain continuous motor operation
• Support consistent motor speed and power
• Reduce electrical resistance during operation
• Provide smooth brush-to-commutator contact
• Restore the factory electrical system of compatible router motors

Common Signs Replacement Is Needed

Replace the carbon brush if you notice:

• Reduced motor power
• Intermittent motor operation
• Excessive sparking through the motor vents
• Router fails to start consistently
• Brush worn close to the wire lead
• Cracked, chipped, pitted, or burned brush surface

Because carbon brushes wear naturally over time, replacing worn brushes is one of the most common repairs for restoring router motor performance. When replacing brushes, inspect the armature for burns, cracks, or other damage that could indicate a larger motor issue.

Installation & Service Notes

Disconnect the router from its power source before performing maintenance.

Remove the brush caps or brush holders to access the existing N031634 Carbon Brushes. Carefully remove the worn brush and inspect the brush holder and commutator for dirt, burns, or excessive wear. Install the new brush in the same orientation as the original, ensuring it moves freely within the brush holder. Reinstall the brush cap securely without overtightening. For best performance, replace both motor brushes at the same time, even if only one appears worn. After installation, operate the router without load for several minutes to allow the new brushes to seat properly against the commutator.

Important: If the new brushes wear rapidly or excessive sparking continues after replacement, inspect the armature and commutator for damage before returning the router to service.

Maintenance Recommendations

• Inspect carbon brushes periodically for wear.
• Replace both brushes together to maintain balanced motor performance.
• Keep motor vents clean to improve cooling.
• Inspect the commutator whenever replacing brushes.
• Avoid prolonged motor overloading that accelerates brush wear.
• Use genuine OEM replacement parts to maintain factory fit, reliable electrical contact, and long-term router motor performance.