{"product_id":"premium-replacement-check-spring-left-9117632905-for-pfaff-1425-1426-and-pfaff-1525-sewing-machines","title":"Check Spring Left 9117632905 for Pfaff 1425, 1426 and Pfaff 1525 Sewing Machines","description":"\u003cp\u003eLeft Check Spring (91-176329-05) for Pfaff Sewing Machines\u003cbr\u003e\nEnsure flawless thread tension and stitch consistency with the Left Check Spring (Part #91-176329-05). Also known as a take-up spring, this component is critical for controlling thread slack during the needle's descent, preventing loops, tangles, and skipped stitches in high-speed industrial environments.\u003c\/p\u003e\n\n\u003cp\u003eSpecifically engineered for the left-side tension assembly of Pfaff compound feed machines, this spring provides the exact recovery tension required for heavy-duty threads used in upholstery and leatherwork.\u003c\/p\u003e\n\n\u003cp\u003eKey Features\u003cbr\u003e\nPrecise Tension Calibration: Specifically wound to provide the correct resistance and snap-back for the left-hand needle thread, ensuring stable stitch formation at high RPMs.\u003c\/p\u003e\n\n\u003cp\u003eHigh-Fatigue Spring Steel: Manufactured from premium-grade spring wire to withstand millions of cycles without losing its shape or tension, a must for industrial production.\u003c\/p\u003e\n\n\u003cp\u003eSmooth Contact Surface: The loop is polished to a mirror finish to ensure the thread glides through without friction, fraying, or snagging, even when using bonded nylon or polyester threads.\u003c\/p\u003e\n\n\u003cp\u003eDirect OEM Specification: Designed as a drop-in replacement for the original Pfaff part number 91-176329-05, ensuring a perfect fit within the tension regulator housing.\u003c\/p\u003e","brand":"Universal","offers":[{"title":"Default Title","offer_id":48287269847289,"sku":"9117632905","price":11.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/6733\/3113\/files\/Pfaff_Premium_Replacement_Parts.jpg?v=1775106965","url":"https:\/\/empenzoamericas.com\/products\/premium-replacement-check-spring-left-9117632905-for-pfaff-1425-1426-and-pfaff-1525-sewing-machines","provider":"Empenzo Americas Corp.","version":"1.0","type":"link"}