Your Leading Other Auxiliary Devices Supplier
Zhejiang Jiaxing Precision Technology Co.,Ltd. is a professional manufacturer specializing in sewing machine parts and precision components. Our range of sewing machine adjustment & control parts is comprehensive, including stitch length regulator, presser foot lifter, pressure adjustment screw & nut, sewing machine head support, and knee lifter rod. These products are widely used in industrial and household sewing machines, textile automation equipment, and related precision machinery.
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Sewing Machine Work Light SwitchThe Berker 288 Series Three-Button Switch Module integrates the three core sewing functions of 1/2 Stitch, Single Stitch, and Reverse Stitch. Indicator lights provide real-time feedback on button
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Sewing Machine HandwheelThe Sewing Machine Handwheely is the core handwheel component for industrial straight stitch sewing machines such as the Yamato H8900 series.
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Serger Trimming Knife AssemblyThe 296.33-12 is an automatic trimming knife assembly (moving knife assembly) for overlockers/sergers. Its core function is to cooperate with the fixed knife to complete stitch trimming and thread
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Air Suction DeviceSuitable for various lockstitch machines and overlock machines
Types of Other Auxiliary Devices
Sewing Machine Work Light Switch
The Berker 288 Series Three-Button Switch Module integrates the three core sewing functions of 1/2 Stitch, Single Stitch, and Reverse Stitch. Indicator lights provide real-time feedback on button status and operating modes.
Sewing Machine Handwheel
The Sewing Machine Handwheely is the core handwheel component for industrial straight stitch sewing machines such as the Yamato H8900 series.
Serger Trimming Knife Assembly
The 296.33-12 is an automatic trimming knife assembly (moving knife assembly) for overlockers/sergers. Its core function is to cooperate with the fixed knife to complete stitch trimming and thread end cleaning.
Air Suction Device
The airflow of the Air Suction Device can take away part of the heat, avoiding melting and adhesion of chemical fiber sewing threads, needle hole scorching due to high temperature, or damage to heat-sensitive fabrics, and reducing the probability of thread breakage.
Parameter of Other Auxiliary Devices
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Product Category |
Other Auxiliary Devices |
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Included Devices |
Work light switch, handwheel, trimming knife assembly, air suction unit |
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Material |
Steel alloy, engineering plastic, electronic components |
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Voltage Range |
110–240V |
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Operating Speed |
Designed for high-speed industrial sewing machines |
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Weight Range |
Approx. 0.1–2.0 kg depending on device type |
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Installation Type |
Direct machine mounting or modular attachment |
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Function |
Assist stitching, trimming, lighting, heat and thread control |
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Compatibility |
Industrial lockstitch, overlock, and special sewing machines |
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Application |
Apparel, textile production, continuous industrial sewing |
Functions of Other Auxiliary Devices

Indicator Function
The backlight/status light serves not only as an operational prompt but also aids in diagnosing button malfunctions (e.g., a non-lit light may indicate a loose connection or damaged button).

Stitch Length Linkage
The 1/2 Stitch length is automatically halved based on the system setting without altering the memorized original length; the original setting is restored upon release or when stopping.

Independent Operation
The Single Stitch button can be tapped while stopped (no pedal needed). Reverse Stitch requires the pedal and typically has speed limitation (~800 rpm) to prevent needle breakage.

Adjustable Parameters
Settings like the number of reverse stitches (2-4), front/back reinforcement mode, and the Single Stitch trigger method (half/full stitch) can be adjusted via the machine's parameter menu.
Usage Instructions of Other Auxiliary Devices
If the indicator is abnormal (e.g., not lighting, staying on), first check the button wiring and power supply, then investigate panel settings and potential switch component failure
The Single Stitch button can be tapped directly for a single stitch while stopped; continuous stitching requires holding the button while pressing the pedal.
The Reverse Stitch button only engages reverse sewing while held; releasing it immediately resumes forward sewing. Control the press duration to avoid excessive reverse stitching.
Ordering Process
Inquiry & Requirement Review
Buyers send drawings, samples, or specifications, and our team reviews technical details, materials, and application requirements.
Technical Evaluation & Quotation
We evaluate production feasibility, confirm processes and tolerances, and provide a clear quotation with lead time.
Sample Development & Approval
If required, we produce trial samples or prototypes for testing and confirmation before mass production.
Order Confirmation & Production
After sample approval, the order is confirmed and scheduled for in-house production under strict quality control.
Quality Inspection & Packaging
All products undergo inspection to ensure consistency, accuracy, and safe packaging for international shipment.
Delivery & After-Sales Support
We arrange shipment and provide ongoing support for any technical or quality-related inquiries after delivery.
Other Auxiliary Devices: Surface Treatment of Steel Alloys
Hardening
Metallic alloys can all be work hardened but specifically steel-alloys can also be hardened through heat treatment. The harden-ability of a steel-alloy is dependent on its carbon or other alloys content. The higher percentage carbon alloys can achieve a greater degree of hardness.
The hardening process is achieved by heating an alloy to a predefined temperature and then quenching in oil, water, air or a special polymer quenchant. The temperature and quenching parameters are dependent on the type of steel being processed.
Tempering
Tempering usually follows the hardening process and is used to remove much of the brittleness of the alloy while retaining the components hardness.
Induction Hardening
Rapidly heating using an induction coil immediately followed by quenching in a quench jet can also harden medium and high carbon steels. This process can also be carried out using alternative hot flame impingement or laser technology heating techniques.
Our Service Advantages
Pre-sales Service
We assist customers by reviewing technical requirements, materials, and applications, and provide solution advice, product selection support, and trial samples when required.
In-sales Service
We provide clear updates on production and delivery status, adjust schedules when necessary, and support shipping and export procedures.
After-sales Service
We offer repair or replacement during the warranty period and provide paid service support after warranty.
Packing & Transportation

FAQ
As one of the leading auxiliary devices manufacturers and suppliers in China, our products have good reputation in the market. Please rest assured to wholesale high quality auxiliary devices at competitive price from our factory. Contact us for more details.
other auxiliary devices, Sewing Machine Handwheel, Sewing Machine Work Light Switch