Brother Bobbin Case XF5707101 | Inner Rotary Hook Assembly Replacement

Restore proper stitch formation and eliminate thread issues with a genuine Brother bobbin case assembly.

The Brother Bobbin Case / Inner Rotary Hook Assembly (Part #XF5707101) is a critical component responsible for holding the bobbin and working with the hook system to form stitches correctly. If this part becomes damaged or misaligned, it can cause thread bunching, skipped stitches, or complete stitch failure.

This is a direct OEM replacement designed to bring your machine back to smooth, consistent performance.

Key Features

• Genuine Brother OEM bobbin case assembly
• Inner rotary hook component for precise stitch formation
• Ensures smooth thread pickup and loop formation
• Direct replacement — no modifications required
• Restores proper machine timing and performance

FULL MODEL COMPATIBILITY

Fits Brother Sewing Machine Models:

PS300T
XR9550
XR9550PRW

Part Number

XF5707101

Also Known As

Inner Rotary Hook Assembly

Common Issues This Fixes

• Thread bunching under fabric
• Skipped or uneven stitches
• Bobbin thread not catching properly
• Noise or rough operation in hook area
• Damaged or worn bobbin case

Installation Notes

• Remove needle plate and bobbin area components
• Clean hook race before installing
• Ensure proper seating and alignment
• Re-thread machine and test before use

Why This Part Matters

The bobbin case and hook assembly are essential to stitch formation. A damaged unit can:

• Ruin stitch quality instantly
• Cause thread jams and breakage
• Lead to further internal wear

Replacing it restores factory-level performance.

Why Buy from ThreadWorks

• Trusted source for Brother parts
• Genuine OEM components — exact fit
• Fast shipping on orders $75+
• Real technician support if needed