The Genuine 229-21605 / B3128012000 Check Spring is a precision sewing machine part designed to maintain proper thread tension and smooth thread movement during sewing. The check spring helps control the thread as the needle moves, ensuring balanced tension and consistent stitch quality.

This genuine replacement part is designed for the Juki DDL-8700 Sewing Machine and is also compatible with the Juki DLN-5410N-7 Sewing Machine. Manufactured to original factory specifications, it offers a precise fit, reliable durability, and long-lasting performance.

Ideal for sewing machine repair and maintenance, this check spring helps keep your industrial sewing machine operating smoothly and producing high-quality stitches.

Product Details:

Part Number: 229-21605 / B3128012000

Part Name: Check Spring

Type: Genuine Replacement Part

Compatible Machines: Juki DDL-8700, Juki DLN-5410N-7

Function: Helps control thread tension and ensures smooth thread movement for consistent stitching

A dependable genuine part to maintain the performance and reliability of your Juki industrial sewing machine.

✔ Free shipping on orders over $99
✔ Ships from our USA (Georgia) office when in stock
✔ Weekly restocking from Japan, China, Bangladesh, and Turkey warehouses
✔ 3–7 business days handling time
✔ Compatible with multiple industrial sewing machines
✔ Carefully inspected before shipment

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