{"product_id":"necchi-bobbin-case-part-201764-supernova-julia-ultra-made-in-japan","title":"Necchi Bobbin Case (Part 201764) - SuperNova Julia Ultra - Made in Japan","description":"\u003ch3\u003eReplacement Bobbin Case for Necchi Oscillating Sewing Machines - Part # 201764\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 201764 (also listed as 201764A)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Metal bobbin case for oscillating (class-15) hook system\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuality:\u003c\/strong\u003e High-quality replacement, Made in Japan\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/p\u003e\n\u003ch4\u003eAbout This Bobbin Case\u003c\/h4\u003e\n\u003cp\u003eThis precision-manufactured metal bobbin case is specifically designed for vintage Necchi sewing machines with oscillating (class-15) bobbin systems. The bobbin case is a critical component that houses the bobbin thread and ensures smooth, balanced stitch formation. Made in Japan to exacting quality standards, this replacement bobbin case delivers reliable performance and proper tension control for your classic Necchi machine.\u003c\/p\u003e\n\u003cp\u003eThe bobbin case acts as the housing for the bobbin thread, feeding it smoothly into the machine's shuttle assembly to create perfectly balanced stitches. Without a properly functioning bobbin case, you may experience thread tension problems, skipped stitches, thread bunching, or poor stitch quality.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eAdjustable Tension Control:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe bobbin case features a small adjustable screw on the side that allows you to regulate the tension of the lower (bobbin) thread. This precision adjustment ensures balanced stitches and proper thread tension for different fabric weights and thread types.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHinged Latch Design:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe bobbin case includes a hinged latch mechanism that must be pulled to insert or remove the case from the machine's shuttle assembly. This secure latch keeps the bobbin case properly positioned during sewing while allowing easy removal for bobbin changes and cleaning.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThread Protection:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe enclosed design prevents the bobbin thread from unraveling or tangling when the machine starts and stops, ensuring consistent thread delivery and preventing frustrating thread jams.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMade in Japan Quality:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eManufactured in Japan to high-quality standards, this bobbin case is precision-machined from durable metal for long-lasting performance. Japanese-made sewing machine parts are renowned for their superior fit, finish, and reliability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOscillating Hook System:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned specifically for Necchi's oscillating (class-15) hook system, this bobbin case ensures proper compatibility and smooth operation with your vintage Necchi machine.\u003c\/p\u003e\n\u003ch4\u003eCompatibility - Fits Necchi Models:\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary Models:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eNecchi SuperNova\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNecchi Mirella\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNecchi Julia\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNecchi Ultra\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNecchi Automatica\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNecchi BU Nova\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNecchi BU Mira\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGeneral Compatibility:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAll Necchi oscillating sewing machines\u003c\/li\u003e\n\u003cli\u003eNecchi BU series models (BU Mira, BU Nova, etc.)\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e This bobbin case is designed for oscillating hook systems. It will NOT fit Necchi machines with rotary hook systems (top-loading or drop-in bobbins). Please verify your machine uses a front-loading oscillating bobbin system before ordering.\u003c\/p\u003e\n\u003ch4\u003eWhen Do You Need a Replacement Bobbin Case?\u003c\/h4\u003e\n\u003cp\u003eYou may need to replace your bobbin case if you experience:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInconsistent thread tension\u003c\/strong\u003e - Upper and lower threads don't balance properly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread bunching or bird's nesting\u003c\/strong\u003e - Thread tangles on the underside of fabric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkipped stitches\u003c\/strong\u003e - Machine misses stitches or creates uneven stitch length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroken or damaged latch\u003c\/strong\u003e - The hinged latch is bent, broken, or won't close properly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorn tension spring\u003c\/strong\u003e - The adjustable tension screw no longer holds tension\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisible damage\u003c\/strong\u003e - Scratches, burrs, or rough spots inside the bobbin case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLost or missing bobbin case\u003c\/strong\u003e - You need a replacement for a machine you acquired\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eInstallation Instructions\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eRemoving the Old Bobbin Case:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eTurn off and unplug your sewing machine\u003c\/li\u003e\n\u003cli\u003eRemove the bobbin from the bobbin case (if installed)\u003c\/li\u003e\n\u003cli\u003eLocate the hinged latch on the bobbin case\u003c\/li\u003e\n\u003cli\u003ePull the latch to release the bobbin case from the shuttle assembly\u003c\/li\u003e\n\u003cli\u003eGently pull the bobbin case straight out from the front of the machine\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eInstalling the New Bobbin Case:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eHold the new bobbin case with the latch facing you\u003c\/li\u003e\n\u003cli\u003ePull the latch to open it\u003c\/li\u003e\n\u003cli\u003eInsert the bobbin case into the shuttle assembly, aligning it with the positioning notch\u003c\/li\u003e\n\u003cli\u003eRelease the latch - you should hear or feel it click into place\u003c\/li\u003e\n\u003cli\u003eGently tug on the bobbin case to ensure it's securely latched\u003c\/li\u003e\n\u003cli\u003eInsert a wound bobbin and thread according to your machine's manual\u003c\/li\u003e\n\u003cli\u003eTest sew on scrap fabric and adjust tension if needed\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch4\u003eAdjusting Bobbin Tension\u003c\/h4\u003e\n\u003cp\u003eThe small screw on the side of the bobbin case controls the lower thread tension:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTo increase tension:\u003c\/strong\u003e Turn the screw clockwise (righty-tighty) in very small increments (1\/8 turn at a time)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTo decrease tension:\u003c\/strong\u003e Turn the screw counterclockwise (lefty-loosey) in very small increments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest after each adjustment:\u003c\/strong\u003e Sew on scrap fabric to check stitch balance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProper tension:\u003c\/strong\u003e When you hold the bobbin case by the thread, it should drop slowly and smoothly when you give it a gentle bounce\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Make very small adjustments - even 1\/8 of a turn can make a significant difference. Never force the screw or over-tighten it.\u003c\/p\u003e\n\u003ch4\u003eNeed Bobbins?\u003c\/h4\u003e\n\u003cp\u003eThis bobbin case works with standard metal Class 15 bobbins. We carry high-quality metal one-piece bobbins that are perfect for your Necchi:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.vintagesingerparts.com\/products\/10-metal-one-piece-bobbins-with-no-holes-part-530761\" target=\"_blank\"\u003eMetal One-Piece Bobbins (10-pack) - Part #530761\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003eMaintenance Tips\u003c\/h4\u003e\n\u003cp\u003eTo keep your bobbin case functioning properly:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean regularly:\u003c\/strong\u003e Remove lint and thread debris from inside the bobbin case after every few bobbins\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck for burrs:\u003c\/strong\u003e Run your finger gently inside the bobbin case - it should feel smooth. Any rough spots can damage thread\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvoid dropping:\u003c\/strong\u003e Metal bobbin cases can be damaged if dropped on hard surfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDon't over-oil:\u003c\/strong\u003e A tiny drop of sewing machine oil on the latch hinge is sufficient - don't oil the tension spring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStore safely:\u003c\/strong\u003e When not in use, store the bobbin case in a clean, dry place to prevent damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTroubleshooting Common Issues\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eBobbin case won't stay in place:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMake sure the latch is fully closed and clicked into position\u003c\/li\u003e\n\u003cli\u003eCheck that the bobbin case is properly aligned with the positioning notch\u003c\/li\u003e\n\u003cli\u003eVerify you're using the correct bobbin case for your machine model\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThread tension still incorrect after installing new bobbin case:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAdjust the tension screw in small increments\u003c\/li\u003e\n\u003cli\u003eCheck that you're using the correct bobbin type (Class 15)\u003c\/li\u003e\n\u003cli\u003eVerify the bobbin is wound evenly and inserted correctly\u003c\/li\u003e\n\u003cli\u003eCheck upper thread tension and threading path\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThread keeps breaking:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCheck for rough spots or burrs inside the bobbin case\u003c\/li\u003e\n\u003cli\u003eMake sure the thread is properly seated in the tension slot\u003c\/li\u003e\n\u003cli\u003eVerify you're using quality thread appropriate for your fabric\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhy Choose a Quality Replacement?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eMade in Japan Precision:\u003c\/strong\u003e Japanese manufacturing is renowned for precision and quality in sewing machine parts. This bobbin case is machined to exact tolerances for proper fit and smooth operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProper Fit Guaranteed:\u003c\/strong\u003e Designed specifically for Necchi oscillating hook systems, this bobbin case ensures compatibility with your vintage machine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDurable Metal Construction:\u003c\/strong\u003e Unlike cheaper plastic alternatives, this metal bobbin case provides long-lasting durability and maintains proper tension over time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRestore Original Performance:\u003c\/strong\u003e A worn or damaged bobbin case can cause numerous sewing problems. A quality replacement restores your Necchi to smooth, reliable operation.\u003c\/p\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 201764 (also 201764A)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Oscillating hook (class-15) bobbin case \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Adjustable tension screw, hinged latch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Necchi SuperNova, Mirella, Julia, Ultra, Automatica, BU series, and other oscillating hook models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality:\u003c\/strong\u003e Made in Japan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New replacement part\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cp\u003eOne (1) new metal bobbin case for Necchi oscillating hook sewing machines. Bobbin not included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRestore smooth, balanced stitching to your vintage Necchi with a precision-made replacement bobbin case!\u003c\/strong\u003e\u003c\/p\u003e","brand":"CMSS","offers":[{"title":"Default Title","offer_id":20272526426210,"sku":"201764","price":19.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/4681\/files\/201764_10.jpg?v=1759439399","url":"https:\/\/www.vintagesingerparts.com\/products\/necchi-bobbin-case-part-201764-supernova-julia-ultra-made-in-japan","provider":"Central Michigan Sewing Supplies","version":"1.0","type":"link"}