ZSK Bobbin Case

Genuine ZSK bobbin case for commercial embroidery machines Characteristics The ZSK Bobbin Case is a genuine OEM replacement bobbin case designed for the rotary hook assembly on ZSK embroidery machines. The bobbin case holds the bobbin in position within the hook and controls lower thread tension, which directly affects stitch quality, loop formation, and overall embroidery appearance. A properly functioning bobbin case is essential for consistent lower thread delivery. Worn tension springs, damaged cases, or burrs on the bobbin case can cause thread breakage, looping on the underside, and inconsistent stitch formation. Regular inspection and timely replacement helps maintain production quality. Features ▼ Genuine ZSK OEM Part Manufactured to original factory specifications. Lower Thread Tension Control Regulates bobbin thread delivery for consistent stitch quality. Precision Fit Seats properly in the ZSK rotary hook assembly. Smooth Thread Path Polished surfaces reduce friction and thread breakage. Direct Replacement Drop-in fit for compatible ZSK embroidery machines. Specifications ▼ Part Number 570-649 Type Bobbin case Function Holds bobbin and controls lower thread tension Compatibility ZSK multi-head embroidery machines OEM Status Genuine ZSK part Usage Tips ▼ Check bobbin case tension spring regularly and adjust as needed for your thread and application. Inspect for burrs, scratches, or wear that could snag thread or affect tension. Clean lint and thread debris from the bobbin case area during routine maintenance. Replace if tension becomes inconsistent or the case shows visible damage. Important Parts Ordering Information Please verify the part number and machine compatibility before completing your purchase. SPSI is not responsible for parts ordered incorrectly by the buyer. Stock & Pricing Pricing shown is based on current SPSI stock availability at the time of purchase. Parts placed on backorder may be subject to vendor availability and pricing changes. Need Help Finding a Part? If you do not see the part you are looking for, or would like assistance verifying the correct part for your machine, please contact our team at: Parts@SPSI.com We are happy to help verify compatibility and assist with locating parts. Returns & Restocking Returned parts are subject to a 15% restocking fee. Circuit boards, headboards, and print heads are non-returnable. Feel free to live chat with us if you have any questions.