China Functional Auxiliary Parts Manufacturers, Suppliers and Factory - Wholesale Service

Your Leading Functional Auxiliary Parts 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.

8420 Oil Tank Assembly
Suitable for 8420 bartack machines
Brother S-7200C Bobbin Winder
Suitable for Brother 7200 series sewing machines
DDL-9000 bobbin winder
Suitable for JUKI 9000 series sewing machines
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
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
Auxiliary Oil Tank Assembly
Suitable for 8420, 9820 and other models
8420 Oil Tube Clamp
Suitable for 8420 bartack machines
8420 Oil Tube Fitting
Suitable for 8420 bartack machines
8420 Oil Cap
Suitable for 8420 bartack machines
DDL-8800 bobbin winder
Suitable for JUKI 8800 series sewing machines
394 Bobbin Winder
Suitable for 394 household sewing machines

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Why Choose Us

Rich Experience

With nearly 20 years of experience in sewing machine parts manufacturing, we supply components to well-known machine manufacturers in multiple regions.

Advanced Equipment

We operate complete in-house production with CNC machining, injection molding, and automated assembly, ensuring stable quality and consistent precision for large-volume orders.

OEM & ODM Available

We offer OEM and ODM services based on drawings or samples, supporting mold development, trial production, and scalable manufacturing for different sewing machine applications.

Types of Functional Auxiliary Parts

8420 Oil Tank Assembly

As a lubricating oil storage container, the 8420 Oil Tank Assembly can ensure that high-speed rotating components such as the main shaft, lower shaft and hook of the bartack machine continuously obtain lubricating oil. The 8420 Oil Tank Assembly provides reliable lubrication storage for the 8420 bartack machine.

Brother S-7200C Bobbin Winder

Equipped with an adaptive tension sensor, the Brother S-7200C bobbin winder can automatically identify sewing threads of different wire diameters such as cotton thread, polyester thread and silk thread, with a tension adjustment range of 0.5-5N, avoiding thread breakage of fine silk thread and loose winding of thick thread, and adapting to the multi-fabric industrial sewing needs of Brother 7200 models.

Sewing Machine Handwheel

The Sewing Machine Handwheely is the core handwheel component for industrial straight stitch sewing machines such as the Yamato H8900 series. Its primary function is the manual operation of the upper shaft, enabling needle positioning, threading assistance, equipment debugging, and maintenance, ensuring sewing precision and operational safety.

8420 Oil Tube Clamp

The 8420 Oil Tube Clamp is used to fix the oil pipe of the bartack machine's lubrication system, avoiding the oil pipe from loosening and bending due to vibration and displacement generated by the high-speed operation of the equipment, ensuring the smoothness of the lubricating oil circuit.

Parameter of Functional Auxiliary Parts

Product Category	Functional Auxiliary Parts
Included Sub-Categories	Oil System Parts, Bobbin Winder, Other Auxiliary Devices
Material Range	High-strength steel, engineering plastic, corrosion-resistant coatings
Weight Range	~0.01–2.0 kg per device
Operating Voltage	110–240 V
Compatibility	Industrial lockstitch, bartack, household, overlock machines
Function	Lubrication support, thread winding, lighting, trimming, control
Mounting Style	Machine direct mount or modular attachment
Tolerance	Precision machining for reliable fit and motion
Typical Application	Apparel, leather, textile, home sewing production

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.

Features of Functional Auxiliary Parts

Oil Storage and Stable Oil Supply

At the same time, it can buffer the oil circuit pressure, avoid fluctuating oil supply, make each component lubricated evenly, prevent dry grinding damage due to local oil shortage, and cooperate with the oil pump system to realize stable delivery of lubricating oil;

Sedimentation and Filtration

When recovering the machine oil returning from each lubricating component, the space in the 8420 Oil Tank Assembly can allow metal debris, mechanical wear impurities and other contaminants in the oil to settle;

Sealing and Pollution Prevention

The sealing structure of the 8420 Oil Tank Assembly can avoid lubricating oil leakage, prevent contamination of the bartack machine body and sewing fabrics, and ensure the cleanliness of sewing products;

Auxiliary Heat Dissipation

The high-speed operation of the bartack machine increases the temperature of the lubricating oil. The large capacity of the 8420 Oil Tank Assembly can provide a heat dissipation space for the hot oil, avoiding the impact of high-temperature machine oil on the lubrication effect, and reducing the adverse effects of high temperature on other components of the equipment.

Maintenance of Functional Auxiliary Parts

Regular Inspection
Regular inspection is the cornerstone of effective maintenance. By visually examining the equipment on a routine basis, you can identify any signs of wear, damage, or malfunction early on. This allows for timely repairs or replacements, preventing minor issues from escalating into major problems that can disrupt production.

Cleaning
Cleaning is essential for maintaining the performance and longevity of auxiliary equipment. Dust, debris, and other contaminants can accumulate on the surfaces of the equipment, causing it to overheat, wear out more quickly, or malfunction. Regular cleaning helps to remove these contaminants and prevent them from causing damage.

Lubrication
Lubrication is crucial for reducing friction and wear on moving parts. Over time, the lubricants in auxiliary equipment can break down or become contaminated, reducing their effectiveness. Regularly check the lubrication levels of the equipment and replenish them as needed.

Calibration
Calibration ensures that the equipment is operating within the specified parameters and producing accurate results. Over time, the settings of auxiliary equipment can drift, leading to inaccurate measurements or inconsistent performance

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.

Payment Terms

T.T with 30% downpayment, 70%before shipment.
Paypal or West Union also accept.

Packing & Transportation

productcate-552-379

FAQ

Q: What are functional auxiliary parts in sewing machines?

A: Functional auxiliary parts are add-on components like oil system parts, bobbin winders, and other devices that support machine performance and efficiency in production operations.

Q: How do functional auxiliary parts improve production workflow?

A: By supporting tasks such as lubrication, thread winding, lighting, and trimming, functional auxiliary parts help reduce downtime and streamline sewing operations.

Q: Are functional auxiliary parts compatible with multiple machine models?

A: Many functional auxiliary parts are designed for broad compatibility with industrial and household machines, but buyers should confirm fit before ordering.

Q: Can functional auxiliary parts reduce operator effort?

A: Yes, devices like dedicated bobbin winders and air suction units within functional auxiliary parts reduce manual steps and workload for operators.

Q: Can functional auxiliary parts be purchased as replacement spares?

A: Yes, functional auxiliary parts are often stocked as spare parts to support ongoing maintenance programs and minimize machine downtime.

Q: How do functional auxiliary parts support high-speed sewing?

A: Designed for durability and precision, functional auxiliary parts maintain performance under continuous high-speed sewing conditions.

Q: Do functional auxiliary parts need frequent servicing?

A: Basic inspection and occasional cleaning keep functional auxiliary parts operating smoothly even in heavy-use industrial environments.

As one of the leading functional auxiliary parts manufacturers and suppliers in China, our products have good reputation in the market. Please rest assured to wholesale high quality functional auxiliary parts at competitive price from our factory. Contact us for more details.