Bobbin Thread Tension Assembly 40210742
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Current pricing, availability, lead time, and machine compatibility
will be verified for your specific requirement.
Please send your machine model, required gauge or size, quantity, and clear photos of the machine nameplate or existing components when available.
Please send your machine model, required gauge or size, quantity, and clear photos of the machine nameplate or existing components when available.
🌎 International customers are welcome.
We serve customers worldwide. Depending on product availability, orders may be sourced or fulfilled through our USA, Singapore, or international supply network.
Please include your destination country and postal code so we can review the most suitable shipping option.
REQUEST A QUOTE
We serve customers worldwide. Depending on product availability, orders may be sourced or fulfilled through our USA, Singapore, or international supply network.
Please include your destination country and postal code so we can review the most suitable shipping option.
U.S. customers may also text the product link and photos to
+1 (770) 744-3831
Bobbin Thread Tension Assembly 40210742 for Juki LK-1900S-SS and LK-1900S Sewing Machines
The 40210742 Bobbin Thread Tension Assembly is an original replacement part designed for Juki LK-1900S-SS and Juki LK-1900S sewing machines. This important component controls the tension of the bobbin thread, helping maintain balanced stitching and smooth thread flow during sewing.
Made to meet Juki’s original manufacturing standards, this tension assembly ensures reliable performance, precise thread control, and long-lasting durability. Proper bobbin thread tension is essential for achieving neat, consistent stitches and preventing thread issues during operation.
Replacing a worn or damaged bobbin thread tension assembly with the 40210742 helps restore your machine’s performance and keeps it running efficiently in industrial sewing environments.
Key Features:
40210742 Juki replacement part
Designed to regulate bobbin thread tension
Ensures smooth thread movement and consistent stitch quality
Durable construction for long service life
Ideal for industrial sewing machine maintenance and repair
Compatible Machines:
Juki LK-1900S-SS Sewing Machine
Juki LK-1900S Sewing Machine
The 40210742 Bobbin Thread Tension Assembly is a reliable choice for maintaining the performance, accuracy, and efficiency of your Juki sewing machine.
Most in-stock orders are processed within 3 business days, Monday through Friday. Special-order and non-stock items may require additional handling time
We ship from our Georgia, USA warehouse. If an item is temporarily unavailable in the U.S., we source it through our global supplier network and will notify you of the estimated lead time.
Free shipping is available on U.S. orders over $99.
Once your order ships, you will receive a tracking number by email.
For urgent orders or shipping questions, please contact us before placing your order.
We stand behind the quality of the products we sell.
• Genuine OEM parts are covered by the manufacturer's warranty where applicable.
• Aftermarket and generic parts are covered against manufacturing defects.
• If you receive a damaged, defective, or incorrect item, please contact us promptly. Please see our Return & Refund Policy for eligibility, notification requirements, and applicable return terms.
• Warranty does not cover damage caused by improper installation, misuse, normal wear, Return & Refund Policy modifications.
If you have any questions, our support team is happy to help before or after your purchase.