Bernina Tension Complete Series #1029307200

Part Overview

Part Number: 1029307200 (also shown as 102930.72.00)

Application: This is a complete tension assembly unit for selected Bernina sewing machines, designed to maintain correct thread/bobbin tension across the machine’s stitch formation.

 Function & Key Features

• correct upper and lower thread tension in the machine, ensuring balanced stitch formation and consistent results.

• “Complete series” implies it’s a full assembly rather than a single component (e.g., tension spring or dial).

• OEM-engineered to Bernina’s precision standards — critical for maintaining machine performance and stitch quality.

• Used for service/replacements when tension issues arise (uneven stitches, thread loops, puckered seams).

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 Compatibility & Installation Notes

• The listing shows 102930.72.00 as SKU/part number 

• Before installation, confirm the machine model is in the supported list for this tension assembly (check serial/model compatibility).

• Installation should be done by a qualified technician: tension assemblies often require calibration and proper thread path setup for correct operation.

• After installation, test stitches on various fabrics to ensure tension is balanced (upper and bobbin threads lock at or just under the surface).