Bobbin Case Opener 70146 for Singer 144W, 145W & Seiko JW-28BL Sewing Machines

Ensure smooth and accurate bobbin case operation with this bobbin case opener, designed for Singer 144W, 145W, and Seiko JW-28BL industrial sewing machines. This essential component works within the hook system to open and control the bobbin case at the correct timing, helping maintain stable thread flow, consistent stitch formation, and reliable machine performance during heavy-duty sewing.

Key Features:

?? replacement part – 70146
?? Compatible with Singer 144W, 145W & Seiko JW-28BL models
?? Ensures correct bobbin case opening and timing control
?? Helps maintain smooth thread pickup and stitch consistency
?? Durable industrial-grade construction for long service life
?? Ideal for high-speed, heavy-duty sewing operations

Orders are typically processed within 1–3 business days.

We ship from our Georgia, USA warehouse. If an item is temporarily unavailable in the U.S., we source it through our global supplier network and will notify you of the estimated lead time.

Free shipping is available on U.S. orders over $99.

Once your order ships, you will receive a tracking number by email.

For urgent orders or shipping questions, please contact us before placing your order.

We stand behind the quality of the products we sell.

• Genuine OEM parts are covered by the manufacturer's warranty where applicable.

• Aftermarket and generic parts are covered against manufacturing defects.

• If you receive a damaged, defective, or incorrect item, please contact us within 30 days of delivery.

• Warranty does not cover damage caused by improper installation, misuse, normal wear, or modifications.

If you have any questions, our support team is happy to help before or after your purchase.