ckpsms L-Size Pigtail Embroidery Bobbin Cases 4-Pack — Small 7/8in Back-Latch, Consistent Tension

ckpsms supplies a set of four L-size pigtail bobbin cases designed as direct replacements for many industrial embroidery machines, delivering consistent thread tension and simple installation.

If you're maintaining a commercial embroidery setup or stocking spare parts, these ckpsms bobbin cases give you four ready-to-install, back-latch spring bobbin carriers sized for small "L" bobbins (7/8" diameter). They are built with an integrated pigtail thread guide for reliable thread control under heavy production and are made to fit a wide range of popular brands and models, so you can swap them in without adapting your machine.

Which machines accept these L-size bobbin cases?

These bobbin cases are made to match the mounting points, latch style, and bobbin diameter used by many commercial embroidery heads. They work across multiple well-known manufacturers where an "L" style small bobbin case is required.

• Compatible with numerous TAJIMA models (TM series, TME variants, TMF family, TMEX, etc.).
• Fits many HAPPY models including HCM, HM4, HMF, HMS and K/J series heads.
• Suitable for select SINGER industrial heads (20U line, 306M, 320 series).
• Also matches TYPICAL GYD20-6 and other machines using 7/8" bobbins.

How do these bobbin cases perform on busy production lines?

Designed for continuous embroidery work, the pigtail guide and back-latch spring reduce skipped stitches and thread snarls that can slow a run. Using matched bobbin cases helps maintain consistent tension across heads, which is important when producing multi-head garments.

• Pigtail guide stabilises thread feed for smoother stitch formation.
• Back-latch spring ensures secure seating and quick removal.
• Four cases in a kit let you replace an entire multi-head bank or keep spares on hand.

What should I check before replacing bobbin cases?

Before swapping bobbin cases, confirm your machine requires small "L" bobbins (7/8" diameter) and matches the back-latch spring mounting. Inspect the bobbin hook and shuttle for wear and clean any lint or debris to ensure proper seating and tension.

• Verify bobbin diameter and case style (L-size small, not M-size large).
• Confirm the machine uses a back-latch spring bobbin case design.
• Clean the hook area and test tension with a sample stitch after installation.

How easy is installation and maintenance?

Installation is straightforward: remove the old case, insert the ckpsms L-size case until the latch engages, thread the pigtail and test. Routine maintenance—cleaning and light lubrication of the hook area—keeps performance steady and extends part life.

• Tool-free seating and removal using the case latch for quick swaps.
• Thread through the pigtail guide to reduce tangles and speed threading.
• Perform periodic cleaning and tension checks to maintain consistent stitch quality.

Who is this set best for? These ckpsms 4PCS L-size pigtail bobbin cases are ideal for embroidery shop owners, production managers, and technicians who operate or service multi-head commercial machines from brands like Tajima, Barudan, Melco, Ricoma, SWF, and others that use the small 7/8" bobbin format. If you need dependable, plug-and-play replacements to minimize downtime or keep spare parts inventory lean, this kit gives you four matched cases engineered for repeatable tension and easy handling.