JACK Aluminium Double Capacity Bobbin – JACK F5HL-7/H2/H5/H6 · JUKI DNU1541/DU1181N/DDL8700EH/X · SPEEDWAY SW0303L/SW335L

Reduce bobbin changes and keep production moving with the JACK Aluminium Double Capacity Bobbin. Machined from aluminum for durability and precision balance, it holds twice the thread of a standard bobbin — cutting downtime on long sewing runs. A direct drop-in replacement for JACK, JUKI, and SPEEDWAY heavy-duty machine models.

Key Features

• Double thread capacity compared to standard bobbins — fewer interruptions on long runs
• Precision-machined aluminum for consistent balance and smooth rotation
• Maintains correct bobbin tension throughout the full thread load
• Direct drop-in fit — no adjustment needed
• Durable aluminum construction resists wear over high-cycle use

Compatibility

• JACK F5HL-7 / H2 / H5 / H6
• JUKI DNU-1541 / DU-1181N / DDL-8700EH / DDL-8700EH/X
• SPEEDWAY SW0303L / SW335L