Genuine Bobbin Case Assembly B18370120A0/52237NBL for Brother DB2-B737 Sewing Machine
GET PRICE & CONFIRM FIT
⚠️ Avoid ordering the wrong part — confirm before you buy
Submit your request using the form below and our team will quickly confirm pricing, availability, and shipping options.
Looking for multiple sewing machine parts?
Send us your parts list - our team will help you source them quickly at competitive pricing.
Fast response for urgent spare parts requests.
Genuine Bobbin Case Assembly (Part #B18370120A0 / 52237NBL) is the high-performance standard for the Brother DB2-B737 industrial sewing machine. This specialized "NBL" (No-Back-Lash) case is engineered to provide absolute control over your bottom thread tension, ensuring professional results even during high-speed operation.Why the 52237NBL Bobbin Case is EssentialA high-quality bobbin case is the heart of balanced stitch formation. If you are struggling with inconsistent tension or thread tangles, this authentic assembly offers the solution:Integrated No-Back-Lash (NBL) Spring: Features a built-in anti-spin leaf spring that applies constant pressure to the bobbin. This prevents the bobbin from "over-running" when the machine stops suddenly, effectively eliminating bird-nesting and tangles.Optimized for Automatic Trimmers: Designed to work in perfect harmony with the Brother DB2-B737 thread-cutting system, ensuring the thread is held correctly for a clean start on your next seam.Precision Tension Control: The adjustable tension spring is manufactured to tight tolerances, allowing you to fine-tune your stitch quality for a wide range of fabric weights.Industrial-Grade Build: Forged from hardened, polished steel to resist the wear and heat generated by 24/7 high-speed production.Product SpecificationsFeatureDetailsPart NumberB18370120A0 / 52237NBLCompatible MachineBrother DB2-B737 SeriesSpecial FeatureAnti-Backlash (NBL) SpringMaterialHardened Chrome-Plated SteelPro Tip: If you notice your bobbin thread feels "loose" or "sloppy" after your machine trims the thread, your NBL spring may be worn out. Installing this Genuine replacement will instantly stabilize your bottom tension and improve efficiency.
✔ 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
💡 Add more items to your cart to qualify for free shipping ($99+)
📩 Not sure if this fits? Send us your machine model or a photo — we’ll help you confirm.
⚠️ Please confirm your machine model before ordering