The 9033A Aluminum Bobbin is a high-performance, lightweight alternative to the standard steel bobbin, specifically engineered for the Pfaff 138, 234, 463, 483, and 563 industrial series. By utilizing high-grade aluminum, this bobbin significantly reduces rotational mass, allowing for superior thread control at speeds exceeding 5,000 RPM.

It is the preferred choice for modern industrial environments, particularly those using machines equipped with Automatic Thread Trimmers (UT/UBT).

Key Features & Performance
Ultra-Low Inertia: Because aluminum is much lighter than steel, these bobbins have very low "rotational inertia." They start and stop almost instantly, which drastically reduces "backlash" (where the bobbin keeps spinning after the machine stops, causing tangled thread).

High-Speed Stability: Precision-turned to ensure absolute concentricity. This prevents the "bobbin wobble" that can cause uneven tension or "shuddering" inside the bobbin case at high production speeds.

Orders are typically processed within 1–3 business days.

We ship from our Georgia, USA warehouse. If an item is temporarily unavailable in the U.S., we source it through our global supplier network and will notify you of the estimated lead time.

Free shipping is available on U.S. orders over $99.

Once your order ships, you will receive a tracking number by email.

For urgent orders or shipping questions, please contact us before placing your order.

We stand behind the quality of the products we sell.

• Genuine OEM parts are covered by the manufacturer's warranty where applicable.

• Aftermarket and generic parts are covered against manufacturing defects.

• If you receive a damaged, defective, or incorrect item, please contact us within 30 days of delivery.

• Warranty does not cover damage caused by improper installation, misuse, normal wear, or modifications.

If you have any questions, our support team is happy to help before or after your purchase.