Choosing good quality precision machining service

2020,affected by the covid-19, in the current economic climate we have to improve our ability to resist risks, so choosing good quality preicsion machining service is very important for your whole mechanical assembly projects.

SYM precision machining focus on custom machining 23 years, to support you get good quality precision machining service. Such as Turning, Milling, CNC machining, 5-Axis machining, grinding, wire cutting and EDM.

There are 3 machining team to meet all kinds of  your machining needs.

1. Machining Team 1

The main workis for some samples development, rapid prototyping parts.

The order Qty' is 1~2pc of each part.

The lead time is 7~10 Days.

Project show

2. Machining Team 2

The main work is for some small quantity orders, many types of products with small Qty', use manual equipment, CNC miller, Grinder, wire cutting ,EDM,etc.

The order Qty' is 1~100pc of each part.

The lead time is 15~21 days.

Project Show

We sometimes handle more than 100 items for them at a time.

The used material:

Stainess steel, SS304, SS316, 17-4PH, 440C.

Mild steel, 1018, 1020, C45.

Plastic, POM, ABS, PVC, PE, TEFLON.

Alloy steel, 42CrMo4,16MnCr5.

Aluminium, AL6061-T6, AL7075, AL6063, AL5052.

Brass alloy, Bronze, Copper,etc.

Machining Team 3

The main work is for mass production, some big qualtity orders. Used equipment CNC Lathe,CNC Miller and Automatic Lathe.

The order Qty' is 500pc~4000pc of each part.

The Lead time is 25-30 Days.

Project Show

These three work types, there must be a work type for your mahcining needs. Choosing good quality precision machining service, SYM can help you win more projects.  

Advanced precision machining shop

 Advanced precision machining shop in China

SYM Precision, advanced precision machining shop in south China.

Due to ensure perfect precision and innovative production processes,we brought in new advanced equipment every year. Till now, SYM has 6 sets of 5 Axis CNC milling machine,4 sets of 4 Axis CNC milling machine, 60 sets of 3 Axis CNC milling machine, 50 sets of CNC Lathe, 10 sets of Slow Wire Cutting machine, 5 sets of EDM.

5 Axis CNC milling machine, DMG MORI, DMU95, DMU65, and DMU50.This process not only ensures productive flexibility, but also high cutting performance and maximum precision coupled with high dynamics and excellent accessibility and ergonomics.

5 axis machining used to the machining of parts with more complicated geometric shapes, which requires the machining tool to be able to position and connect in five degrees of freedom.

3 Axis CNC machine, Brother, S500X1, S300X1.

The pursuit of high acceleration, high response, to achieve higher production efficiency, the production efficiency is improved. the z-axis acceleration is greatly increased. In the mass production of machined parts for auto and motorcycle, the production efficiency will be improved to a greater extent.

Star CNC Lathe, SR-20J, SR-38J.

These machines are used for turned parts from 0.2" to 1.5" diameter, can use a large library of tooling for the manufacturing of very complex parts that have turning, drilling, and a variety of secondary operation.Suitable for mass production, multi-variety, high precision parts processing.

Japanese Sodick Slow Wire Cutting equipment adopts the new processing with high speed and high precision (+/-0.002mm), it has the linear electric motor servo system first developed in the world. The shaft drive mechanism of the system features its speed with high response and function of precise positioning.

All kinds of equipment above, under the professional operation, SYM precision machining can help you obtain all kinds of superior quality precision machined parts.Come to contact us today.

The key point for the precision machined manufacturer

The key point for the precision machined manufacturer

With the development of science and technology, the mechanical precision is getting higher and higher now, for the precision machined manufacturer,human resources are the key point. Related to quality management and cost management of a factory.

SYM Precision advocates the management idea of 'people first', and gives full play to the subjective initiative of personnel so that people make the best of their ability. At present, SYM has 370 employees, about 270 production personnel, more than 20 mechanical engineers, process engineers, and quality engineers.

At SYM Precision, there are CNC Turning Team, CNC Milling Team, Slow Wire Cutting Team, EDM Team, Manual Milling Team, Grinding Team, and Manual Turning Team. Each production department according to the level of operation technology, there are apprentice, technician, and master level. 

SYM Precision has a comprehensive training program that provides employees with opportunities to improve in all processes.

Apprentice (2%)

Every year, SYM will recruit some graduates with mechanical majors from a technical school, training three months in the factory, who pass the first assessment will stay, and continue to learn. Assessment every three months, the apprentice who passed the assessment will be an official operator after one year.

Technician (58%)

All technicians at SYM shall have more than three years of machining experience, and shall be trained for one month before taking the job.

Master (40%)

At SYM, there are 40% of the production personnel at the master level, with at least 8 years of precision machining experience and a high level of technical skills. In addition to carrying out their routine work, they will be assigned as needed to impart the operational skills.

Finally, let's talk about the engineers at SYM Precision, whether they are process engineers or quality engineers, who have more than 10 years of experience in precision machining, and are very familiar with the product structure, process points and quality focuses of precision machined parts. With such a professional manufacturing team and our advanced equipment, we are sure to provide you with the most competitive products and services.

how important is staff training

how important is staff training!

SYM Saff Training

With the development of science and technology, the progress of society, 'things' have higher requirements for people, the combination of people and things is often in dynamic contradiction. You are a competent worker today, if you don't keep on learning, you may be out of date next year. People and things are not coordinated,an enterprise wants to be invincible in the competition in modern society, it must pay attention to the staff training.

Staff job skill training is a kind of productivity, enterprise staff through continuous training, skills will have a new promotion, so they have a further specification in the production operation, also further improve the work efficiency. The enterprise production equipment can play out the biggest effect, of each process will be more fluent, so that the production cost savings, eventually form ' training-enhanced skills- enterprise development-retraining' of a virtuous cycle. Staff training is a win-win activity that benefits both enterprises and employees. An enterprise that pays attention to staff training will have a better social impact on improving the quality of the whole society.

Staff training effectiveness, it refers to the benefits obtained by the company and employees from the training. For employees, revenue means to learn new knowledge or skills. For the company, revenue includes the increase of customer satisfaction.

Generally, the training effectiveness are usually shown in the following aspects.

1.Increase of employee knowledge.
The trained employees have the basic knowledge necessary to complete their own work, and the employees can have a good understanding of the basic situation of enterprise operation, such as the enterprise's development prospects, strategic objectives, operation policies, rules, and regulations.

2.Improvement of employees' skills
After training, employees have completed the skills necessary for their own work, such as negotiation skills, operation skills, and interpersonal skills.

3.The change of employees' attitude
Through the training, the company has established a relationship of mutual trust with employees.enhanced their spirit, cultivated their teamwork spirit,and increased their initiative to integrate into the corporate culture.

4.Changes in employee behavior
Employees improve knowledge skills and work attitude positive change, mainly reflected in the employee return to work after the operation, the application of new knowledge and skills to practice, to solve the difficulties and problems encountered in the previous work, the transformation of the original work attitude, enhance the enterprise master the sense of responsibility and team cooperation consciousness, actively contribute to enterprise development.

5.Increase of enterprise benefits
The staff can timely apply the training results to work, improve the quality of product and service, reduce the production cost, finally improve customer satisfaction, and increase the efficiency of the enterprise.

To sum up, the innovation of an enterprise can be realized only when the training is completed and improve through continuous learning.

Choosing the right material for your custom machined part

Choosing the right material for your custom machined part.

Custom Machined Parts

Concerning custom machined part,choosing the right material is one of the most important thing,to save your money.

Here are 4 points for choosing the metal or plastic that is right for your custom machined part.


1. What will your machined part be used for?
The environment where your machined part will be used will have the most significant impact on material selection.If you are using machined part outside or in wet environments,use stainless steel as opposed to carbon steel due to avoid rust.

Design specifications like stress load,tolerance,and types can also impact your choice of material.

2. Do you care about the weight of parts?
Generally, standard aluminum alloys like AL6061 are great, low density options to keep weight down if a metal is required.Plastics like delrin (POM) and ABS can help keep the weight down even more if tradeoffs in strength can be made.


3. Strength and heat resistance
There are many different ways to measure material strength including tensile strength, material hardness, and wear resistance.Selecting the types of strength your design to get the best material for your custom machined part.

Very low or very high temperatures will also restrict you from using certain materials. Environments where the temperature fluctuates are particularly important to consider, since some materials will expand or contract even in environments where the temperature difference is small.

4. Cost
Overall cost of your project will influence your choice of material. the more material your part uses, the more expensive it will be. Special materials and strong materials, such as titanium,carbide steel etc.

Slecting the right precise machining process

For precision machined parts,the precise machining process directly affects the quality of products,according to different tolerance requirements to write different precise machining process, to ensure the quality of machined parts, a good machining process is very important.

SYM Precise Machining Process

At SYM Precision Machining, our operation standard is the production drawing provided by the customer. Due to meeting the tolerance requirement of the drawing, write the most economical precise machining process, we require the professional technical level of the process engineer to be very high.

1. According to the size accuracy of the drawing to determine the cutting method, such as turning, milling, grinding, wire cutting and EDM, etc.

2. According to each cutting charateristic to determine the process, for example, machining the parts as below picture, the precise machining process would be.

1) Turning outside
2) Drilling the center hole
3) Machining end surface
4) Chamfering
5) Deburring

Precise Machining Process - Turning 

3. In order to improve the production efficiency, reduce the damage of parts, but also consider the times of clamping, as far as possible to reduce the times of clamping parts in the machining process.


The same part, according to the different quantity of production, its process is also different. CNC machining is commonly used for mass production, the traditional machining is generally used for small quantity production, the cost would be higher if need use CNC machining for small quantity production.

The modification and supplement of precise machining process regulations must go through careful discussion and approval.

10 tips for thread tapping in precision machining

Unlike most commonly used turning, milling and drilling tools, the cutting edge and the opposite surface of the tapping are relatively weak, and the cutting edge is prone to collapse or crack, especially when processing steel materials.

Therefore,let's learn 10 tips for thread tapping in precision machining.

1. The hole of the bottom hole of the thread on the workpiece should be chamfered,both ends of the thru thread hole should be chamfered.

2. The position of the workpiece clamp should be correct, try to make the centerline of the threaded hole placed in a horizontal or correct position, so that the tapping can easily judge whether the tap size is perpendicular to the plane of the workpiece.

3. At the beginning of tapping, try to put the tap straight, and carefully check and correct the position of the tap.

4. When tapping, every 1 / 2-1 turn of the tapping, it should rotate about 1/2 turn, so that the swarf can be easily discharged.

5. When tapping blind thread holes,to drop out the tap and remove the swarf in the hole.

6. When tapping the screw holes of plastic materials, lubricating coolant should be added. For steel materials, motor oil or concentration-bound emulsions are generally used.

7. When changing the screw tap during the tapping process, you must first screw into the thread hole by hand. When you can no longer screw in, continue to tap. When the tapping is completed, it is best to drop out it by hand to ensure that the quality of the tapped thread is not affected.

8. When tapping by machine,the screw tap and thread hole should be kept coaxial.

9. When tapping by machine,the calibration part of the tap cannot be all over, otherwise,it will produce messy teeth when the tap is dropped out.

10. When tapping by machine, the cutting speed is 6-15m/ min for general steel, 5-10m/min for quenched and tempered steel,2-7m/min for stainless steel,8m/min for cast iron.

Custom CNC Machining in China

What is Custom CNC Machining?
Do you have a good supplier who can provide custom CNC machining services?

Custom CNC Machining---According to your requirements, using computer numerically controlled (CNC)  milling and turning machines to produce custom parts.CNC Machining is a fast and cost-effective way to make a few precision prototype with plastic and metal material.the cost is a little high than extrusion, pressure die casting etc process.

SYM Precision Machining is a leader in Custom CNC Machining Services in China,established in 1997,with advanced equipment and professional staff,using our 3, 4 and 5-axis CNC machining centers,CNC lathe to offer you custom machined metal and plastic components. CNC machining services for rapid prototyping and production parts.

Custom CNC Machining Parts from SYM Precision

Advantage of custom CNC machining

1. Precision
You will get high precision tolerances +/-0.001"-0.005" for custom machined parts.

2. Flexible customization
According to your requirements, select from a variety of dimensions on solid metal parts, and plastic parts, built to precise design specifications.

3.Material selection
Custom CNC machining offers a wide variety of materials.we can provide you with customized raw material as required.Such as stainless steel,carbon steel,aluminium alloy,cooper alloy and plastic,etc.

4.Fast turnaround
Rapid machining,large quantities of customized products can be obtained in a short time.

5.Low investment in tooling
Once a tool path is created and a machine is programmed, it can run a part 1 time, or 100,000 times. CNC machines are built for precise manufacturing and repeatability which makes them cost-efficient and highly scalable.

CNC Machining is crucial in many industries such as aerospace and defense, automotive, energy, industrial machinery, medical, robotics.

Please don't hesitate to contact us for your custom machined needs,you will get qualified machined parts on time and win more projects.

First look at the mask for coronavirus

Today, the epidemic has spread to more than 100 countries around the world, and masks will become the biggest hot product in 2020. In just two months, many logistics providers,factories, sellers,and platforms have transformed into mask sellers. Too many people have experienced this,the sellers of masks who claim to be in stock have delayed delivery after paying, delayed for various reasons,even worse,the sellers took the money and closed the business,you can never reach them again. The news reported that there were hundreds of mask fraud cases.

Demand exceeds supply, high-quality factories that meet certification and qualifications have basically been requisitioned by the government,giving priority to the supply of medical systems and severely affected areas (Wuhai,Hubei province). About mask for coronavirus,how many details do you know?

China is a big country in the mask industry, producing about 50% of the world's masks, before the epidemic,the maximum daily output of Chinese masks was more than 20 million. The fastest mask production speed is 120-200pcs per minute, but a standard process of analyzing and disinfecting takes 7 days to 15 days. Because the medical mask is sterilized with ethylene oxide, after the sterilization, there will be residual ethylene oxide on the mask,which not only stimulates the respiratory tract but also carcinogens. So the residual ethylene oxide must be released by analytical methods to meet the safety content standard. After passing the test, it can be put into the market.

The three major mask industry bases in China, Hubei Xiantao, Henan Zhengzhou, and Jiangsu Yangzhou. From the perspective of the industrial chain, manufacturers of upstream raw material,PP Non-woven fabrics, Meltblown fabrics, nose bridge strips, ear band materials, and mask production equipment and midstream mask manufacturing companies are mainly concentrated in the Yangtze River Delta region, and downstream distribution companies are too scattered.

Classification of mask

1.Classified by scope

  1.1 Medical mask: medical ordinary masks, medical surgical masks and medical protective masks.

1.2 Particulate matter protective mask: industrial use meets GB2626-2019 standard, special labor protection products safety mark (LA certification), if used for anti-fog and haze need to use insert type, with GB/T32610-2016 standard.

1.3 Thermal mask: suitable for winter wear, just need to meet the relevant standards of fabrics.

1.4 Other special industries mask: such as chemical industry,etc.

2. Classified by material

2.1 Gauze mask: Gauze mask is still used in some workshops. the requirements of GB19084-2003 standard is low, and they can only protect large particles of dust.

2.2 Non-woven mask: Most disposable protective masks are Non-woven masks, which are mainly based on physical filtration and electrostatic adsorption.

2.3 Cloth mask: Cloth mask only have a warming effect and have no effect of filtering small particles.

2.4 Paper mask: Suitable for food, beauty, and other industries, with good air permeability, easy to use and comfortable, the paper used follows GB/T22927-2008 standard.

2.5 Mask made of other materials, such as new material for bio-protection filtering.

3. Classification by wearing method

3.1 Head-mounted: Suitable for workers who wear for a long time in the workshop.
3.2 On-ear style: Easy to wear, suitable for frequent wearing.
3.3 Neck-wearing type: S-hook, some soft material connectors, connecting ear bands are converted into a neckband type, suitable for long-term wearing, more convenient for workers such as wearing hard hats or protective clothing in the workshop.

4. Classification by shape

Mask is divided into three types: flat, foldable, and cup-shaped. The flat mask is easy to carry, but have poor adhesion; folding mask is easy to carry,cup-shaped breathing space is large, but not convenient to carry.

5. Classification by protection level

Different countries and industries have different standards, which are divided into different protection levels according to different particle filtration efficiency.

Chinese standards of mask

GB2626-2019 This standard filter element is divided into two categories (KN and KP) according to the filtering performance. This type of mask can block the virus for a short time, but it cannot be used to contact patients who may have splatter or contact the patient for a long time.

GB / T32610-2016 technical specifications for daily protective mask, which are standards for the civilian mask.

YY / T0969-2013 This standard is an industry-standard for disposable medical masks. Ordinary medical masks meet this standard.

YY0469-2011 medical surgical mask is the industry standard for medical surgical masks. It is suitable for disposable masks worn by clinical medical staff during invasive operations and other procedures.

GB19083-2010 medical protective mask, this standard applies to medical work environment, filtering particulate matter in the air, blocking droplets, blood, body fluids, secretions, etc.

Prevent and control Coronavirus for safe production

How to prevent and control coronavirus is very important for safe production at present.

In the spring Festival of 2020, the new virus (COVID-19) quickly attacked major cities across the country. As the Spring Festival holiday, most of our workers have returned to their hometowns. However, this year's Spring Festival is not destined to reunite as before. Traffic was controlled everywhere, the holiday extended, everything came so suddenly.

SYM Precision actively cooperated with the local government to implement the production resumption system during the epidemic.
Started open to work smoothly on February 10th, and till now, there are 98% workers have returned back to work,the factory's productivity has returned to normal. To this end, we have made many efforts to ensure safe production.

1. All work areas are regularly sprayed and disinfected.Keep ventilate workshops, offices and living areas.

2.All staff must wear mask, accept body temperature tests and make a record when entering and leaving the factory.

3.All outsider are not allowed to enter the factory area,suppliers deliver the goods stopped outside the factory and forward to SYM staff.

4. During the epidemic prevention and control period, customers are temporarily not accepted to visit.

5.For maintenance the equipment,the outside maintenance personnel must confirm the address and security code information to SYM HR department in advacne, all thing meet to control requirements,can be enter to factory under accompanying of SYM HR person.

6.All couriers are sent and received in the front of guard room uniformly.The demand person will go to the guard room to place and receive them by themselves. No courier personnel can enter the factory area.

7.All staff carry out staggered meals in three batches, scattered seats, and sat in one direction (could not sit face to face), only take off masks during meals. Don't talk during meals.

Till now all staff at SYM Precision are safe and health.We believe that we will defeat the virus soon and welcome a warm day.

Choosing the Right Material for Aluminium Machined Parts

Choosing the Right Material for Your Aluminium Machined Parts.

There are many kinds of aluminium alloy in the market,only 7 kind aluminium alloy be used commonly for precision aluminium machined parts.


AL6061

The main alloy elements of AL6061 are magnesium and silicon, with moderate strength, good corrosion resistance, weldability and good oxidation.It is widely used in various industrial structures requiring high strength and antimicrobial resistance.
Generally the internal stress of T6 is bigger, the processing will be deformed, and the most suitable state should be T651.

AL7075

AL7075 materials are generally added in a small amount of copper, chromium and other alloys,It is reputed as the most excellent product in aluminum alloy, with high strength and far superior to any soft steel,Easy to process and good wear resistancee,but it can't be soldered and it's very anti-corrosive,it's better used with anodize.

Used for high - voltage structural parts,Such as aerospace, mould processing, mechanical equipment, tooling and fixtures industry.

AL6063

AL6063 material is a low-alloyed al-mg-si high-plastic alloy.It has excellent thermoplastic and can be extruded into complex structure at high speed,thin wall, Various shapes of hollow and forging parts.
Widely used in building aluminum doors and Windows, curtain wall frame,heat sink parts.

AL5083

AL5083 material is a high - magnesium alloy. It has good strength, corrosion resistance,weldability and cutting ability in non - heat treatment alloy,the surface is beautiful after anodizing.
Excellent corrosion resistance makes 5083 alloys widely used for marine applications such as ships and welding of automobiles and aircraft parts, subway light rail.

AL5052

5052 aluminum alloy belongs to al-mg alloy,with good corrosion resistance, good welding, good cold processing, and moderate strength.
Used to make aircraft fuel tanks, tubing, and traffic vehicles, the sheet metal parts of the ship,electric shell.


AL6082

AL6082 aluminum alloy belongs to Al-Mg-Si alloy,It has medium strength and good welding performance and corrosion resistance.Easy to process and easily coated.
Mainly used in transportation and structural engineering industries. Such as bridges, cranes, roof frames, transport aircraft,carrier etc.

AL2024
This is a high strength hard aluminum, which can be strengthened by heat treatment, and is of medium plasticity in quenching and quenching.Resistance to corrosion is not high, and anodizing treatment and coating method or surface are used to enhance the corrosion resistance.
It is mainly used to make all kinds of high-load parts and components (but not stamping parts) such as the skeleton parts on the plane.

Know more details please read SYM Blog.

Advanced Precision Machining Manufacturer in China

Advanced Precision Machining Manufacturer in China.

------2019 summary of SYM precision machining.

SYM is an advanced precision machining manufacturer in China.With over 20 years of experience, our facility is a high close tolerance machining shop,with advanced equipment and professional staff. SYM precision machining team is here to support you on mechanical project forever.

Last year, in 2019,SYM increased another 4 sets of 5 Axis CNC machine,DMU50,The Universal Milling Machines of the DMU Series are offering the economical entry into  5-axes machining up to  5-axes simultaneous machining.The rigid swivel rotary table allows a swivel range up to 110°,With spindle speeds up to 20,000 rpm the DMU is suited for high precision complex machined parts.

5 Axis CNC Machining Shop

With other advanced equipment,3 axis CNC Milling,CNC Lathe, Grinding machine,Manual milling and EDM wire custting machine. You will get all custom machined service, such as  CNC Milling , CNC Turning, Manual Machining, Grinding, Wire Cutting and Mechanical assembly works.

3 Axis CNC Milling Shop

Please don't worry about the MOQ, SYM can service for you from 1pc to 10K pc. At SYM precision machining, we have three machining team to match customer's different requirements.

Team I, The main work is for some samples development, rapid prototyping parts.The order Qty' is 1-2pc of each part, lead time is 7-10 days.

Team II, the main work is for some small quantity orders, many types of products with small Qty', use manual equipment, CNC miller, Grinder, Wire Cutting, EDM,etc. The order Qty' is 10-100 pc of each part. The lead time is 15-21 Days.

Team III,The main work is for mass production, some big quantity orders. Used equipment CNC Lathe,CNC Miller and Automatic Lathe. The order Qty' is 500pc-10000pc of each part. The lead time is 25-30 Days.

There must be a work type for your needs,if you want to get high qualified machined parts, please don't hesitate to contact us, the advanced precision machining manufacturer will help you to win more and more projects.