BERNINA Medium Spool Disk 27

The BERNINA Medium Spool Disk 27 is a small but essential accessory for any BERNINA sewist who wants consistent, trouble-free stitching. Designed to guide thread smoothly off medium-sized spools, this spool disk ensures thread flows cleanly into the machine without rubbing against the spool itself — preventing unwanted tension, thread breakage, and wear on your machine over time. At 1.1 inches in diameter, it fits a wide range of medium thread spools and is compatible with all BERNINA sewing, quilting, and embroidery machines.

Key Features

• Designed specifically for use with BERNINA sewing, quilting, and embroidery machines.
• Guides thread smoothly off the spool to prevent rubbing and friction against the spool body.
• Reduces unwanted thread tension before the thread enters the machine, supporting accurate stitch formation.
• Helps protect your machine's tension system from the long-term effects of poorly delivered thread.
• Measures 1.1 inches in diameter, suitable for a wide variety of medium-sized thread spools.
• A low-cost accessory that can meaningfully extend the performance life of your thread and machine components.
• Easy to place and replace — no tools required.
• Compatible with all current and recent BERNINA machine models.

Specifications

The BERNINA Medium Spool Disk 27 is the right choice for any BERNINA owner who wants to protect their machine and maintain smooth, even stitching — whether they are completing everyday sewing projects or detailed embroidery work. OSP Machines is an authorized dealer and provides free support for the life of your machine. If you ever have questions about fitting, compatibility, or use, the OSP Machines support team is here to help at no charge, for as long as you own the product.

Compatible with all Bernina models

Frequently Asked Questions

What size spools does the BERNINA Medium Spool Disk 27 fit?

The BERNINA Medium Spool Disk 27 is designed for medium-sized thread spools. It measures 1.1 inches in diameter, which fits a wide range of standard medium spools commonly used in home sewing, quilting, and embroidery.

Is this spool disk compatible with my BERNINA machine?

Yes — the BERNINA Medium Spool Disk 27 is compatible with all BERNINA sewing, quilting, and embroidery machines. If you are unsure whether it suits your specific spool or machine setup, the OSP Machines support team is happy to help.

Why do I need a spool disk or spool cap?

Without the correct spool disk, thread can rub directly against the spool body as it unwinds, creating friction and unwanted tension before the thread even reaches your machine. This can result in uneven stitches, thread breakage, and extra wear on your machine's tension components over time. Using the correctly sized disk helps thread flow smoothly and consistently.

What warranty does this product come with?

OSP Machines is an authorized dealer and provides free support for the life of your machine.

How is the Medium Spool Disk 27 different from other BERNINA spool disks?

BERNINA offers spool disks in multiple sizes to accommodate different spool diameters. The Medium Spool Disk 27 is sized for medium spools at 1.1 inches in diameter. Using the correctly sized disk for your spool is important — too small or too large a disk will not guide the thread properly, which can affect tension and stitch quality.