Replacement Carbon Motor Brushes for Bernina New Style Motors (2-Pack)

Set of two replacement carbon motor brushes with springs for select Bernina sewing machines with new style motors. These essential components conduct electricity to the motor's rotating armature, ensuring optimal motor performance and longevity for your Bernina machine.

Product Specifications

• Part Number: 323.658.03
• Quantity: 2 brushes with springs
• Size: 4.8mm x 5.8mm x 13mm each
• Motor Type: New style Bernina motors

IMPORTANT: Verify Compatibility

These brushes are designed for Bernina new style motors. To ensure proper fit, verify your motor uses this brush size (4.8mm x 5.8mm x 13mm) before ordering. Check your machine's manual or measure your existing brushes to confirm compatibility.

Key Features

• Complete Set: Includes 2 carbon brushes with springs - replace both at the same time for optimal performance
• Essential Maintenance: Carbon brushes are wear items that need periodic replacement to maintain motor function
• New Style Motor: Specifically designed for Bernina new style motors (larger than old style 3.8mm x 4.3mm brushes)
• Optimal Performance: Fresh brushes ensure proper electrical contact and smooth motor operation
• Extended Motor Life: Regular brush replacement prevents motor damage and extends machine longevity

When to Replace Your Carbon Motor Brushes

• Motor runs intermittently or stops unexpectedly
• Motor sparks excessively or makes unusual noises
• Loss of motor power or reduced speed
• Brushes are worn down to 1/4 inch or less in length
• Motor won't start or runs erratically
• Visible wear, chipping, or damage to brush surface
• As preventive maintenance every few years of regular use

Why Carbon Motor Brushes Matter

Carbon motor brushes are critical wear components in your Bernina's motor. They conduct electricity to the rotating armature, allowing the motor to run. As the motor operates, the brushes gradually wear down from friction against the commutator. When brushes become too worn, the motor will lose power, run erratically, or stop working entirely. Regular replacement of carbon brushes is essential preventive maintenance for your Bernina machine.

New Style vs. Old Style Motor Brushes

Bernina has used different motor brush sizes over the years:

• New Style (Part #323.658.03): 4.8mm x 5.8mm x 13mm - this product
• Old Style (Part #324.250.080): 3.8mm x 4.3mm - for vintage 700/800 series models

Always verify which size your motor requires before ordering. Using the wrong size brushes will not fit properly.

Installation Tips

• Always replace both brushes at the same time, even if only one appears worn
• Check brush length - replace when worn to 1/4 inch or less
• Clean the commutator surface when installing new brushes
• Allow new brushes to seat properly during initial use
• Keep spare brushes on hand for future maintenance

Note

This is a quality replacement carbon brush set designed to meet original specifications. Verify your motor uses 4.8mm x 5.8mm x 13mm brushes before ordering. Installation requires opening the motor housing - some mechanical knowledge is helpful. If unsure about compatibility, measure your existing brushes or consult your machine's service manual.