{"product_id":"genuine-check-spring-single-needle-70072-for-singer-144w-145w-and-seiko-jw-8bl-sewing-machines","title":"Check Spring Single Needle 70072 for Singer 144W, 145W and Seiko JW-8BL Sewing Machines","description":"\u003cp\u003eCheck Spring (Single Needle) 70072 for Singer 144W, 145W \u0026amp; Seiko JW-8BL Sewing Machines\u003cbr\u003e\nMaintain smooth thread tension and consistent stitch quality with this single needle check spring, designed for Singer 144W, 145W, and Seiko JW-8BL industrial sewing machines. This essential tension component helps control thread take-up during stitching, preventing slack, reducing skipped stitches, and ensuring balanced seam formation.\u003cbr\u003e\nKey Features:\u003c\/p\u003e\n\n\n\u003cp\u003e?? replacement part – 70072\u003c\/p\u003e\n\n\n\u003cp\u003e?? Compatible with Singer 144W, 145W \u0026amp; Seiko JW-8BL models (seiko-sewing.co.jp)\u003c\/p\u003e\n\n\n\u003cp\u003e?? Regulates upper thread tension during stitch formation\u003c\/p\u003e\n\n\n\u003cp\u003e?? Helps prevent thread slack and uneven stitches\u003c\/p\u003e\n\n\n\u003cp\u003e?? Durable spring steel construction for long service life\u003c\/p\u003e\n\n\n\u003cp\u003e?? Ideal for heavy-duty industrial sewing applications\u003c\/p\u003e\n\n\n\u003cp\u003eThe check spring is a key part of the thread tension system, working to control thread movement during needle action and ensuring smooth, consistent stitch formation even at high speeds. \u003cbr\u003e\nA reliable replacement part to keep your sewing machine performing accurately, smoothly, and professionally.\u003c\/p\u003e","brand":"Seiko","offers":[{"title":"Default Title","offer_id":48314014400761,"sku":"70072","price":20.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/6733\/3113\/files\/Singer_Genuine_Parts.jpg?v=1776585822","url":"https:\/\/empenzoamericas.com\/products\/genuine-check-spring-single-needle-70072-for-singer-144w-145w-and-seiko-jw-8bl-sewing-machines","provider":"Empenzo Americas Corp.","version":"1.0","type":"link"}