{"product_id":"hirose-rotary-hook-hsh-7-94ao","title":"Hirose Rotary Hook HSH-7.94AO – Industrial Lockstitch Sewing Machine Hook","description":"\u003ch5\u003eDescriptions\u003c\/h5\u003e\n\u003cp\u003eThe \u003cstrong\u003eHirose Rotary Hook HSH-7.94AO\u003c\/strong\u003e is a premium-quality rotary hook designed for heavy-duty industrial lockstitch sewing machines. Manufactured with high precision, this rotary hook provides smooth thread handling, consistent stitch formation, and excellent durability for continuous factory production. It features a \u003cstrong\u003efull automatic open-type lubrication system\u003c\/strong\u003e that minimizes wear and ensures stable high-speed operation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOriginal \u003cstrong\u003eHirose HSH-7.94AO\u003c\/strong\u003e rotary hook.\u003c\/li\u003e\n\u003cli\u003eDesigned for heavy-duty industrial lockstitch sewing machines.\u003c\/li\u003e\n\u003cli\u003eFull automatic open-type lubrication system.\u003c\/li\u003e\n\u003cli\u003eProvides smooth, consistent stitch formation.\u003c\/li\u003e\n\u003cli\u003eHigh wear resistance for long production hours.\u003c\/li\u003e\n\u003cli\u003ePrecision engineered for reliable high-speed sewing performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatible Sewing Machine Models\u003c\/h2\u003e\n\u003cp\u003eThis rotary hook is compatible with selected industrial sewing machines including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrother:\u003c\/strong\u003e DB-B755-5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJanome:\u003c\/strong\u003e DB-J705, DB-J706\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJuki:\u003c\/strong\u003e DDL-8700\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSinger:\u003c\/strong\u003e 400W, 402W, 451K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSiruba:\u003c\/strong\u003e L818F-H1, L819-X1, L918-H1A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMitsubishi:\u003c\/strong\u003e LS2-1130-HOB, LS2-130-HOB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnicorn:\u003c\/strong\u003e DB2-H311, H510H, H515H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBaoma:\u003c\/strong\u003e GC158-B, HG128-B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDadli:\u003c\/strong\u003e DB2-B111-5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlying Man:\u003c\/strong\u003e GC9002H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical:\u003c\/strong\u003e GC6-8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWanping:\u003c\/strong\u003e GC203\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eCommon Failure Symptoms\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkipped Stitches:\u003c\/strong\u003e Caused by worn or damaged hook points.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Breakage:\u003c\/strong\u003e Burrs or scratches on the hook interfere with thread movement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBird Nesting:\u003c\/strong\u003e Hook timing issues or excessive hook wear may cause thread jams beneath the fabric.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoisy Operation:\u003c\/strong\u003e Insufficient lubrication or worn hook components can produce abnormal noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoor Stitch Quality:\u003c\/strong\u003e A damaged rotary hook may create inconsistent lockstitches or loose thread loops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eReplacement Procedure\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect Power:\u003c\/strong\u003e Switch off and unplug the sewing machine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove Needle Plate:\u003c\/strong\u003e Remove the presser foot, needle, bobbin, and needle plate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess the Hook Assembly:\u003c\/strong\u003e Open the hook compartment and remove the existing rotary hook.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean the Area:\u003c\/strong\u003e Remove lint, dust, and old oil from the hook race using a brush.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall New Hook:\u003c\/strong\u003e Fit the Hirose HSH-7.94AO rotary hook into the hook race correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck Hook Timing:\u003c\/strong\u003e Ensure the hook timing aligns properly with the needle before tightening components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLubricate:\u003c\/strong\u003e Apply the recommended sewing machine oil before operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest Sew:\u003c\/strong\u003e Reassemble the machine and perform a test stitch on scrap fabric.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003ch2\u003eMaintenance Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClean the hook race daily to remove lint and thread residue.\u003c\/li\u003e\n\u003cli\u003eLubricate regularly using the recommended industrial sewing machine oil.\u003c\/li\u003e\n\u003cli\u003eInspect the hook point periodically for nicks or scratches.\u003c\/li\u003e\n\u003cli\u003eReplace damaged needles immediately to prevent hook damage.\u003c\/li\u003e\n\u003cli\u003eVerify hook timing after any needle strike or major machine servicing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003ePackage Includes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Hirose Rotary Hook HSH-7.94AO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Choose the Hirose HSH-7.94AO?\u003c\/h2\u003e\n\u003cp\u003eThe Hirose HSH-7.94AO is trusted by garment factories and industrial sewing professionals for its exceptional precision, durability, and consistent stitch quality. It is an excellent replacement hook for maintaining maximum sewing performance and minimizing machine downtime.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eNeed Help Confirming Compatibility?\u003c\/h2\u003e\n\u003cp\u003eIf you are unsure whether this rotary hook is suitable for your sewing machine, please contact us with your machine brand and model number before ordering.\u003c\/p\u003e","brand":"Hirose","offers":[{"title":"Default Title","offer_id":32257855049,"sku":"SP-RH-HSH-7.94AO","price":48.6,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/0161\/products\/e9647396-512a-42dc-92a4-14d47ff619c7.jpg?v=1660638900","url":"https:\/\/sewing.sg\/products\/hirose-rotary-hook-hsh-7-94ao","provider":"Ban Soon Sewing Machine Pte Ltd","version":"1.0","type":"link"}