In the selection of a worm gear screw jack, the lead of the screw plays a critical role in determining the performance of the system. A larger lead means that the screw produces a longer linear displacement per revolution, which results in higher lifting speed and improved transmission efficiency. However, this also leads to weaker self-locking capability, making the system prone to back-driving and often requiring an additional braking device. Moreover, screw jacks with larger leads generally have lower load capacity and reduced positioning accuracy, making them more suitable for applications where high speed and efficiency are prioritized.
On the other hand, screw jacks with smaller leads operate at lower lifting speeds and lower transmission efficiency, but they provide stronger self-locking capability, higher positioning accuracy, and greater load capacity. They can reliably hold loads in place after stopping, which is particularly valuable in heavy-duty or precision applications. For this reason, small-lead screw jacks are commonly used in scenarios requiring heavy load handling, precise positioning, or self-locking, such as mold adjustment or clamping systems. In contrast, large-lead screw jacks are preferred in applications where fast lifting and high efficiency are needed, such as automated production lines or lifting platforms. Therefore, choosing the proper screw lead is a key factor in ensuring that the worm gear screw jack meets the specific requirements of an application.

Common linear motion devices, such as screw jacks and electric linear actuators, not only allow for vertical lifting but also multi-angle adjustment. Electric linear actuators are a good choice for angle adjustment of screw linear products. As an extension of the screw jacks, their design features a tail end cap with a pin holder and a pinhole head, making installation simple and convenient for multi-angle adjustment. The electric linear actuator's travelling nut is designed with a telescopic tube, which improves overall protection and stability. However, the overall height is also doubled, which limits its use in applications with limited installation space. Due to its anchor-mounted design, screw jacks require additional trunnions and footing to achieve angle adjustment.

The introduction and comparison of SWL series/SJA series/JWM series worm gear screw jack

SWL, SJA, and JWM are three widely used types of worm gear screw jacks, applied across machinery, automation, stage equipment, and heavy industries. While all three operate on the same worm gear and screw principle, they differ in structure, load capacity, precision, and typical applications.

The SWL series is a classic and cost-effective choice, suitable for general lifting, pushing, and adjustment tasks. Customers looking for reliable worm gear screw jack suppliers will find SWL to be a proven solution for moderate loads and standard industrial applications.

The SJA series offers a modular and compact design, providing higher precision and efficiency. With multiple configurations and optional accessories, it is ideal for automated production lines and multi-point synchronized systems. This series is often selected as a mini screw jack lifts for projects requiring smooth and controlled movement.

The JWM series is a reinforced heavy-duty model designed for low-speed, high-load, and highly stable operation. Compact variants are also available, making it suitable for applications needing screw jack actuator without compromising strength or reliability.

Below is a comparison of the three series:

From above  we can see that SWL emphasizes versatility and cost-effectiveness, SJA focuses on precision and automation, and JWM provides durability and stability for heavy-duty applications. Understanding these differences helps you choose the most suitable series for their specific industrial requirements.

The gear ratio (also called the transmission ratio) of a worm gear screw jack refers to the ratio between the rotational speed of the worm and the rotational speed of the screw, usually expressed as the ratio of the worm's speed to the screw's speed. The gear ratio directly affects the speed and output torque of the screw jack.

Meaning of Gear Ratio:

Definition of Gear Ratio:
The gear ratio (Transmission Ratio) is the transmission ratio between the worm wheel and the worm, usually represented by the ratio of the number of teeth on the worm wheel to the number of threads on the worm. For example, if the worm wheel has 50 teeth and the worm has 10 threads, the gear ratio would be 5:1.

Impact on Speed:
The gear ratio determines the relationship between the rotational speed of the worm and the screw. The larger the gear ratio, the slower the worm's speed and the slower the screw's lifting speed. Therefore, a higher gear ratio will slow down the screw's movement, which is suitable for applications requiring precise control. A lower gear ratio will result in faster screw movement, which is suitable for quick lifting needs.

Impact on Torque:
The larger the gear ratio, the greater the torque transmitted from the worm to the screw. In cases of heavy loads, a larger gear ratio can provide higher output torque, allowing the jack to support heavier loads.

• Low Gear Ratio (e.g., 1:1 or 3:1) typically provides higher speed but lower output torque, making it suitable for light load, high-speed applications.

• High Gear Ratio (e.g., 10:1 or 20:1) provides greater torque, making it suitable for applications requiring higher load capacity and precision, but with slower speed.

Gear Ratio and Application Scenarios:

Higher Gear Ratio (e.g., 20:1, 30:1):

• Suitable for high-load, low-speed applications. Due to lower speed, it provides greater torque, making it ideal for heavy-duty equipment or precision-controlled applications, such as precision lifting platforms and large machinery.

• Typical Applications: Lifting platforms, heavy-duty cranes, precision machinery.

Lower Gear Ratio (e.g., 3:1, 5:1):

• Suitable for light-load, high-speed applications. Due to the smaller gear ratio, the speed is higher, but the torque is lower, making it suitable for applications that require faster movement but are not designed for heavy loads.

• Typical Applications: Light-duty conveyor systems, automated production lines, etc.

Impact of Gear Ratio on Self-locking Performance:

Worm gear screw jacks often feature a self-locking function, meaning that when the worm stops turning, the friction generated by the engagement between the worm and the worm wheel prevents the load from automatically sliding down. When the gear ratio is larger, the self-locking ability is stronger, because the engagement angle between the worm and the worm wheel is greater, making it more difficult for the load to move in the opposite direction.

You see sgcc structural accessories getting popular in new machines. They last a long time and do not rust easily. SGCC is special because it uses strong steel and works well. Careful making gives you the same good quality every time. You can change them to fit what your project needs. This gives you something that works well and does not break, even when used a lot. Think about using sgcc for your next machine project. You will see good results that last a long time.

Key Takeaways

SGCC structural accessories last a long time and do not rust easily. This makes them great for machines that need to work for many years. The hot-dip galvanisation process helps stop corrosion. It keeps machines safe from water and chemicals. SGCC steel parts do not wear out fast. They stay strong even when used every day. You can change SGCC accessories to fit your project. You can pick the size, shape, and logo you want.

SGCC accessories help machines work better and faster. They make sure machines run smoothly and do not break down often. It is easy to take care of SGCC parts. The zinc coating stops rust and makes cleaning simple. Using SGCC steel saves money over time. It lasts long and does not need much fixing. Smart SGCC steel accessories help machines work better. They also help you check how machines are working.

Durability and Longevity

You want machines to work for a long time. SGCC structural accessories help with this. SGCC steel uses hot-dip galvanisation. This puts a strong zinc coating on the steel. The zinc layer protects the steel for many years. Your machines get long-lasting corrosion resistance. This means your machines stay reliable. Zinc-plated steel sheets do not get damaged easily from daily use. You can trust SGCC to make your equipment last longer.

Wear Resistance

SGCC steel does not wear out fast. The zinc coating works like a shield. It keeps the surface smooth and strong. Hot-dip galvanisation makes the steel hard to scratch or dent. Zinc-plated steel sheets handle friction and impact better than regular steel. You see less damage as time goes on. SGCC structural accessories help machines run well, even with daily use.

Corrosion Resistance

Corrosion resistance is a big reason SGCC structural accessories are popular. SGCC steel uses hot-dip galvanisation to cover metal with thick zinc. This layer blocks moisture and chemicals. Zinc-plated steel sheets do not react much with water or air. You get strong protection against rain, humidity, and tough environments. Hot-dip galvanisation keeps machines safe outside or in factories.

Here is a table that shows how SGCC steel compares to other materials for corrosion resistance:

Rust Prevention
You do not want rust on machines. SGCC steel helps stop this problem. The zinc coating from hot-dip galvanisation stops rust before it starts. Zinc-plated steel sheets stay clean and shiny. Corrosion resistance means you spend less time fixing things. SGCC structural accessories keep machines looking new. You feel better knowing your equipment will not rust easily.

Jiaxin makes it simple to customize what you need. First, you send your drawings or a sample. The engineers check if they can make your design. You get advice from experts who know SGCC and building materials. If your design works, Jiaxin gives you a price. You look at the price and details. If you agree, Jiaxin makes a sample for you. You check the sample to see if it is right. This step helps you avoid mistakes and save money.

You see many reasons to choose sgcc steel for your machines. Sgcc steel gives you strong protection against rust. You get long-lasting parts that work well in tough places. Sgcc structural accessories help you build machines that last. You can pick custom designs and sizes for your project. Sgcc steel makes your equipment reliable and easy to care for. If you want better results, explore sgcc structural accessories for your next job. Contact Jiaxin to learn more or get a custom quote.

If you want to learn more about our products，please visit the website: https://www.jxprecise.com/

Frozen Food Accurate Counting Solution

Q1: What are the pain points of traditional frozen food counting methods?
Traditional manual or simple mechanical counting methods mainly suffer from two major pain points: low efficiency, which struggles to meet large-scale production demands, and high error rates, leading to cost losses and customer complaints.

Q2: How does Zhiwan Vision Particle Counting Machine solve these problems?
Our automatic vision counting machine utilizes advanced machine vision and optical technology to provide a high-precision, fully automated counting solution, fundamentally eliminating the aforementioned pain points.

Q3: What are the core advantages of this equipment?

Q4: What types of frozen foods can it recognize?
The equipment has a broad range of applications, including but not limited to:

• Frozen meat, meatballs, sausages
• Seafood (e.g., whole shrimp, shrimp meat, fish pieces)
• Cheese cubes, frozen fruits, vegetables
• Desserts, baked goods (e.g., frozen fries, pumpkin pies)
• Other convenient frozen foods

Q5: In which stages of the production process is it typically used?
There are three main application scenarios:

• Online Counting (Front-end Integration): Integrated at the front end of the production line to achieve fully automated counting from production to packaging.
• Quality Sampling (End-stage Verification): Conducts precise sampling at the end of the packaging stage to strictly control outgoing quality.
• Warehouse Inventory: Used for fast and accurate inventory checks in raw material or finished product warehouses, improving storage management efficiency.

Q6: What specific value can it bring to our customers?

Q7: How can we get more information or experience the product?
Feel free to contact our professional team at any time. We can provide detailed product technical documentation and success cases, and based on your needs, arrange a free on-site demonstration to offer a tailored technical solution.

Intelligent vision Counting Systems: Precision for Modern Warehousing

In today's Industry 4.0 landscape, warehouse efficiency and accuracy are crucial to competitive supply chain performance. Businesses handling bulk granular materials—such as fasteners, pharmaceuticals, seeds, electronic components, and jewelry accessories—often face inefficiencies and inaccuracies during counting processes. Manual methods are slow, prone to errors, and struggle with mixed batches or irregularly shaped items.

Hefei The One Electronic Technology Co., Ltd. specializes in advanced warehouse vision counting machine designed to overcome these challenges. Our machines enhance workflow accuracy, reduce operational costs, and support seamless digital integration—making them ideal for modern warehouses aiming for full automation.

The Limitations of Manual Counting & Our Automated Approach

Common Issues with Traditional Methods

Time-consuming counting reduces throughput in receiving, sorting, and shipping.

Human errors lead to inaccurate inventories, financial discrepancies, and customer disputes.

High reliance on labor increases operational costs and limits scalability.

Manual data entry creates delays, inaccuracies, and poor traceability.

How Our vision Counting System Works
Equipped with high-resolution industrial cameras and proprietary AI-based vision algorithms, our system instantly recognizes, analyzes, and counts particles—even when overlapping or irregularly shaped.

Unmatched Speed and Accuracy: Count thousands of items per minute with near-perfect accuracy.

Wide Material Compatibility: Works with screws, capsules, seeds, electronic parts, beads, and more.

Real-Time System Integration: Compatible with WMS, ERP, and other warehouse management platforms for automated data synchronization.

Key Use Cases in Warehouse Operations

Incoming Goods Inspection
Rapidly verify quantities during receiving—whether performing full checks or random sampling—to ensure order accuracy and reduce offloading time.

Inventory Sorting and Cycle Counting
Integrate into packing lines for automated batch splitting and efficient stocktaking. Ideal for kitting and custom order fulfillment.

Outbound Quality Control
Recheck quantities before shipping to prevent order errors, reduce returns, and strengthen customer trust.

Fully Automated Packaging and Labeling
Select advanced models that combine counting, packaging, and labeling into one seamless operation—printing labels with item name, quantity, batch number, and date in compliance with international traceability standards.

Engineered for Performance and Reliability

We independent developmed machine vision algorithms ensure robust performance across diverse industrial environments. Our systems are already trusted across industries including pharmaceuticals, agriculture, electronics, hardware, and retail logistics.

Designed to support lean management and Industry 4.0 readiness, our vision counters help businesses minimize waste, maximize efficiency, and transition toward fully automated warehouse operations.

Upgrade to a smarter, error-free warehouse with our vision counting systems.

Refrigerant gas R407C has been a reliable choice for air conditioning and heat pump systems, especially since the phase-out of R22. It’s known for being a high efficiency refrigerant and a more eco-friendly alternative. But a common question arises:

Can R407C be used with or mixed with other refrigerants?

Let’s explore what makes R407C refrigerant unique—and why compatibility matters more than you might think.

What Is R407C?

R407C is a zeotropic HFC blend made up of:

R32 (23%)

R125 (25%)

R134a (52%)

This combination gives refrigerant gas R407C a good balance of cooling performance, energy efficiency, and environmental safety (no ozone depletion). It’s commonly used in residential and commercial systems, and it's often considered a go-to R22 replacement.

Since it's chlorine-free, eco-friendly refrigerant R407C meets global environmental regulations like the Montreal Protocol.

Is R407C Compatible With Other Refrigerants?

The short answer: No. Don’t mix refrigerants.

Even though some refrigerants may appear similar, R407C refrigerant is not compatible with:

R22 (its predecessor)

R410A

R134a

Or any other refrigerant

Here’s why:

R407C is a zeotropic blend, which means it has a glide—its components boil at different temperatures. Mixing it with another refrigerant changes the pressure-temperature relationship and disrupts system performance.

Mixed refrigerants can lead to:

Inaccurate superheat/subcooling readings

Reduced efficiency and cooling capacity

Compressor overheating or failure

Loss of manufacturer warranty

In many countries, it's illegal to mix refrigerants due to safety and environmental risks.

What If I’m Replacing R22?

You can use R407C refrigerant for R22 system retrofits, but the process must be done correctly.

Key retrofit steps:

Recover all R22 (don’t mix)

Flush or replace components if needed

Switch from mineral oil to POE oil

Check for material compatibility (especially seals and O-rings)

Charge the system with pure, high efficiency refrigerant R407C

Skipping these steps can reduce efficiency or cause leaks.

Are There Better Alternatives?

While eco-friendly refrigerant R407C is still widely used, newer low-GWP options are entering the market, such as:

R32 (higher efficiency, but mildly flammable)

R454B (lower GWP, designed to replace R410A)

However, if your system is designed for or retrofitted to R407C refrigerant, it remains a cost-effective and efficient solution—just don’t mix it.

Final Thoughts

R407C is not compatible with other refrigerants. Mixing it with anything else, including R22 or R410A, is unsafe, inefficient, and potentially illegal.

If you're using refrigerant gas R407C, keep it pure.

If you’re switching from another refrigerant, retrofit properly.

And when in doubt, always consult a certified HVAC technician.