141-45650 Button Clamp Set for Button Stitch Machine

Best For

The 141-45650 Button Clamp Set (Panja Set) is designed for computerized button sewing machines that need firm, centered button holding during repetitive production. Its rigid construction and smooth contact surfaces help keep buttons properly positioned while the machine completes the programmed stitch pattern.

Key Features

• Secure button holding: Keeps flat, shank, and multi-hole buttons firmly positioned during sewing.
• High-durability construction: Made from wear-resistant alloy steel for repeated clamping and production use.
• Smooth contact surfaces: Polished surfaces help reduce fabric snagging, marking, and unnecessary pressure on garments.
• Accurate stitch alignment: Helps maintain button positioning over the needle entry points for cleaner attachment.
• Direct-fit design: Machined for the corresponding button-clamp assembly and designed for straightforward replacement.
• Pack quantity: 1 complete set.
• Part number: 141-45650 / 14145650.

Use Cases

This button clamp set is useful wherever computerized button attachment is performed repeatedly, including:

• Shirt and blouse manufacturing
• Trouser and jacket production
• Garment factories
• Tailoring and alteration units
• Boutique production
• Apparel sampling departments
• General button-attachment work on woven and knit garments

A properly positioned button clamp is particularly important when the machine is operating through programmed button-hole patterns, because the button must remain stable while the needle moves between stitch positions.

Benefits

Firm Button Positioning

The clamp holds the button securely so it does not easily move or tilt during the sewing cycle. This is especially useful in repetitive production where consistent button placement matters.

Cleaner Stitch Placement

Stable button positioning helps the needle enter the intended button holes instead of approaching an incorrectly positioned hole. Juki’s instruction documentation specifically warns that incorrect button-clamp positioning can cause needle interference and potential needle breakage.

Suitable for Production Work

The wear-resistant construction is suited to repeated clamping cycles in busy tailoring and garment-production environments.

Better Fabric Contact

Smooth contact areas help the clamp sit against the garment without unnecessary snagging or crushing of the material.

Machine Compatibility

This button clamp set is specified for computerized button sewing machines in the 1903-style configuration.

Part Number: 141-45650 / 14145650

Juki’s documentation confirms that the LK-1903 family uses a dedicated button-clamp assembly and provides adjustment procedures for button-clamp jaw positioning and lifting.

Specifications

How to Use

First, switch off the sewing machine and place it in a safe stop position before removing or installing the button-clamp components. Juki’s service instructions specifically require power-off precautions during button-clamp adjustment.

Next, remove the worn or damaged clamp components and install the replacement set in the corresponding button-clamp assembly.

Then, place a suitable button in the clamp and check that it is held securely without excessive movement. The clamp jaw position should allow the button to sit correctly without interfering with the needle path.

Finally, run a slow test cycle and confirm that the needle enters the button holes correctly and that the button remains securely positioned throughout the sewing sequence. If adjustment is required, follow the machine’s service procedure rather than forcing the clamp components.

FAQs

Is this button clamp set suitable for computerized button sewing machines?

Yes. This set is intended for computerized button sewing machines using the specified 1903-style button-clamp arrangement. It is particularly suited to the listed 1903-series machines. Before ordering, compare the existing clamp assembly and part number because visually similar button clamps can differ between machine configurations.

What is the part number of this button clamp set?

The part number is 141-45650, also written as 14145650. Use this number when checking your existing spare part, parts documentation, or purchase records. Matching the part number is more reliable than selecting a clamp based only on appearance, especially when several button-clamp configurations are used across computerized machines.

Can a worn button clamp affect button sewing quality?

Yes. A worn or incorrectly adjusted clamp can allow the button to shift during sewing. That can affect stitch placement and may increase the risk of needle interference. Juki’s adjustment instructions emphasize correct jaw positioning and checking the button after adjustment, making proper clamp condition an important part of consistent button attachment.

Does the button clamp need adjustment after installation?

It may need checking after replacement. The machine’s button-clamp jaw position and lifting amount are adjustable, and Juki specifies adjustment procedures for these areas. After fitting a replacement, check button holding and needle entry before returning the machine to full production speed.

How do I know whether my existing clamp needs replacement?

Look for visible wear, loose button holding, damaged contact surfaces, inconsistent button positioning, or changes in stitch alignment. If the clamp no longer holds the button securely or the button position changes during the sewing cycle, inspect the complete clamp assembly and compare its part number and configuration before ordering a replacement.

Can this set be used for different button sizes?

The button clamp configuration must match the button and machine setup. Juki documentation shows that different button-clamp jaw-lever configurations are available for different button sizes, including extra-small/small and medium applications. Therefore, check the required clamp configuration rather than assuming every 1903-series clamp handles every button size.