Cog Motor Belt (Upper) - Bernina Part #305.247.03 - Models 930, 931, 932, 933
Cog Motor Belt (Upper) - Bernina Part #305.247.03 - Models 930, 931, 932, 933 is backordered and will ship as soon as it is back in stock.
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Cog Motor Belt (Upper) - Bernina Part #305.247.03 - Models 930, 931...
Description
Description
Replacement Cog Motor Belt (Upper) for Bernina Sewing Machines
Replacement upper cog motor belt designed for Bernina 930, 931, 932, and 933 sewing machines. This toothed cog belt transfers power from the motor to the machine's drive system, ensuring smooth, reliable operation of these classic Bernina models.
Product Specifications
- Part Number: 305.247.03
- Type: 182XL031 cog belt (upper)
- Teeth: 91 teeth
- Compatibility: Bernina models 930, 931, 932, 933
Compatible Bernina Models
930, 931, 932, 933
Key Features
- Upper Cog Belt: Specifically the upper cog belt in the drive system
- Toothed Design: 91 teeth provide secure engagement and prevent slipping
- 182XL031 Specification: Proper size and tooth profile for correct fit
- Essential Drive Component: Transfers power from motor to machine mechanism
- Quality Replacement: Manufactured to meet original specifications for reliable performance
When to Replace Your Cog Motor Belt
- Belt is cracked, frayed, or shows visible wear
- Teeth are damaged, worn, or missing
- Belt has stretched and slips during operation
- Machine runs sluggishly or loses power
- Belt makes unusual noises during operation
- Machine won't run or runs intermittently
- As preventive maintenance every few years of regular use
Why Cog Belts Matter
The cog motor belt is a critical component in your Bernina's drive system. Unlike smooth V-belts, cog belts have teeth that mesh with toothed pulleys, providing secure engagement and preventing slipping. This ensures reliable power transfer for needle movement, feed dog operation, and all internal components. A worn or damaged cog belt can cause loss of power or complete machine failure.
Installation Tips
- Check belt tension after installation - should be snug but not overly tight
- Inspect pulleys for wear or damage when replacing belt
- Ensure teeth properly mesh with pulley grooves
- Keep a spare belt on hand for future maintenance
About Bernina 930 Series Models
The Bernina 930 series (930, 931, 932, 933) are highly regarded vintage sewing machines known for their robust construction and excellent stitch quality. These classic models were built to last generations with proper maintenance. Regular replacement of wear items like motor belts is essential to keep these vintage machines running smoothly and reliably.
Note
This is a quality replacement cog motor belt designed to meet original specifications. This is the upper motor belt - verify your model is 930, 931, 932, or 933 before ordering. Some mechanical knowledge is helpful for belt replacement.
Specifications
Specifications
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Condition
Payment & Security
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