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[Plastic linear bearings] Encyclopedia of basic knowledge worth collecting!
Release date: 2018-08-30 Total clicks: 1466 times

[Plastic linear bearings] Encyclopedia of basic knowledge worth collecting!

The plastic bearings currently used can generally be divided into plastic rolling bearings and plastic sliding bearings. In recent years, engineering plastic products have been used more and more widely for their excellent properties. Engineering plastics have broad application prospects in bearings, and plastic bearings are being welcomed by more and more users.

status quo

At present, foreign plastic bearings are developing very fast and have a wide range of applications. However, plastic bearings are still in their infancy in China, and are lacking in raw material production and product applications. According to incomplete statistics from relevant parties, in the past five years, domestic demand for the five major engineering plastics such as polycarbonate, polyformaldehyde, polyamide, thermoplastic resin, and modified polyphenylene ether and the market demand has maintained a rapid growth of 30.3%. Engineering plastics for plastic bearings are mainly imported.

prospect

In recent years, engineering plastic products have been used more and more widely for their excellent properties. Engineering plastics have broad application prospects in bearings, and plastic bearings are being welcomed by more and more users.

Because engineering plastics have excellent self-lubricity, wear resistance, low friction, and special anti-seizure characteristics, they can work normally even under poor lubrication conditions, so they are ideal for use as bearing materials. Therefore, for the relevant plastic enterprises, seizing market opportunities and developing related plastic bearing products, their market prospects are very huge.


working principle

The working principle of plastic rolling bearings and plastic sliding bearings can be distinguished by their names. The friction that occurs when plastic rolling bearings work is rolling friction, and the friction that occurs when plastic sliding bearings are working; the magnitude of rolling friction depends mainly on the manufacturing Accuracy; and the magnitude of friction of plastic sliding bearings mainly depends on the material of the bearing sliding surface.

classification

1.CSB-EPB series plastic sliding bearing

Plastic sliding bearings generally have self-lubricating functions on their working surfaces; plastic sliding bearings are generally made of engineering plastics with better performance; more professional manufacturers generally have engineering plastics self-lubricating modification technology. Glass beads and other engineering plastics are self-lubricated and enhanced to achieve a certain performance, and then modified plastics are used to process self-lubricating plastic bearings through injection molding. At present, polymer plastic sliding bearings are widely used CSB-EPB Series plastic plain bearings.

CSB-EPB series plastic sliding bearings have the following characteristics:

1. Plastic sliding bearings are suitable for high and low temperature work -200 ~ + 250 degrees;

2.The plastic bearings are all lubricating materials and have a long service life;

3. Plastic bearings will not rust during use and are resistant to corrosion, while metal bearings are susceptible to rust and cannot be used in chemical fluids;

4. Plastic bearings are lighter than metal, which is more suitable for modern lightweight design trends;

5.The manufacturing cost of plastic bearings is lower than that of metals; plastic bearings are made by injection molding and are more suitable for mass production;

6, plastic bearings in the operation without any noise, with a certain vibration absorption function;

Plastic sliding bearings can not only be made into the shape of a shaft sleeve, but also can be made into a plastic linear sliding bearing, but the premise is that the material must be improved by self-lubrication to improve its comprehensive wear resistance.

For example, CSB-LIN plastic linear bearings commonly used in the market are made of engineering plastics modified by lubricants and reinforcing fibers, and their wear resistance is very good;

Due to the many advantages of plastic plain bearings over metal plain bearings, the current output of plastic bearings is expanding, and the use of plastic bearings is also continuously expanding. From fitness equipment to office equipment and the automotive industry, plastic bearings are used. There are no cars on the road that do not use plastic bearings.

2. POM plastic bearings, PP plastic bearings

POM and PA materials have good mechanical strength and abrasion resistance. They are suitable for making relatively precise plastic bearings. The working temperature ranges from -60 ° C to 100 ° C. The surface strength is high and smooth. Basically, there is no tension. Its good self-lubrication. Performance and friction coefficient can be applied to precision and higher speed operation on the basis of maintaining the traditional advantages of plastic bearings.

Among them, POM plastic bearing is the most widely used of all plastic bearings. Generally, the inner and outer ball materials are made of POM or PA, and the cage is made of glass fiber reinforced nylon 66 (GRPA66-25). The ball is glass ball, stainless steel ball or ceramic ball. This kind of bearing performs well in alkaline environment but is not suitable for operation in acid corrosion environment.



Plastic linear bearing characteristics:

1. High rigidity, high hardness, high impact strength even at low temperature;

2. Excellent elasticity and good creep resistance;

3.High heat stability and very good dimensional stability;

4. Good sliding performance and wear resistance;

5. Physiological inertness, suitable for contact with food;

6. Not resistant to strong acids and strong oxidants, poor adhesion to paint

The main uses of plastic linear bearings:

Mechanical and electrical equipment, fitness equipment, food machinery, furniture and decorative building materials

3. HDPE, PP, UPE plastic bearings

HDPE, PP, UPE materials have been proven to be used in relatively weak acid-base cross environments (30% Cucl2 solution and 30% NaoH solution test OK), so they are suitable for most acids / bases / salts / solvent / oil / gas and Seawater corrodes the environment. It has the properties of oil-free self-lubrication and anti-magnetic electrical insulation of general plastic bearings, but its mechanical strength is low and it is easy to deform. Therefore, this type of acid-proof and alkali-resistant plastic bearings is not suitable for large loads and high speeds. Disadvantages of alkaline plastic bearings.

In comparison, the use of UPE material has better strength, low friction characteristics and low temperature application characteristics (minimum to -150 ℃). Generally, the inner and outer ring materials are HDPE, PP or UPE, and the materials are HDPE, PP or UPE. The balls are glass balls, stainless steel balls or ceramic balls. In this way, the comprehensive performance of acid and alkali bearing will be greatly improved.

Plastic linear bearing characteristics:

1. Good corrosion resistance, can resist various corrosive media and organic media within a certain temperature and concentration range

2. High mechanical strength, can maintain high toughness at liquid nitrogen temperature (-196 ℃)

3.Good self-lubrication and high wear resistance

4.Strong anti-adhesion ability

5. Extremely low water absorption and excellent electrical insulation

6.Good resistance to high energy radiation

The main purpose:

Mechanical and electrical equipment, fitness equipment, food machinery, furniture and decorative building materials

4.PTFE high temperature and corrosion resistant plastic bearings

PTFE and PI, as emerging engineering plastic materials, have proven to have good mechanical strength, dimensional stability, and high temperature resistance properties. Among them, the long-term use temperature of PTFE is 260 ° C, and the long-term use temperature of PI is 300 ° C. And it has excellent corrosion resistance, and can still run freely in a medium-strength acid-base corrosion environment, so it is generally used to make PTFE or PI for the outer ring material. The balls are generally Zro2 or Si3N4 ceramic balls. The disadvantage of precision running bearings in relatively harsh environments is that the material itself is relatively expensive, so the use cost is high.

Plastic linear bearings are organized for you, I hope to help you! CSB is a professional maintenance-free self-lubricating material and bearing research and development manufacturer in China. CSB has developed four series of products with years of attention and research on self-lubricating materials science: metal composite based plain bearings, metal based plain bearings, plastic plain bearings, and fiber wound bearings. This website details the technical characteristics and application guides of engineering plastic bearings, plastic linear bearings, plastic articulated bearings, fiber wound bearings and linear guide modules produced by Zhejiang Changsheng Plastic Bearing Technology Co., Ltd. The standard series of materials and their products are suitable for most applications. CSB also focuses on the development and application of special materials for customers; research on high-performance polymer self-lubricating modification technology has made CSB gradually become the market leader in the field of non-metallic sliding bearings By.


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Commissioner of the Automotive Industry <br /> Yu Zhenfei Phone: + 86-573-84186133
Fax: + 86-573-84185517
Email: sm@csb-ep.com
Elevator Specialist <br /> Gao Jie Phone: + 86-573-84185500
Fax: + 86-573-84185517
Email: md@csb-ep.com
Commissioner of Photovoltaic Energy Industry <br /> Zhu Xi Phone: + 86-573-84186969
Fax: + 86-573-84185517
Email: se02@csb-ep.com
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Fax: + 86-573-84185517
Email: bm@csb-ep.com
Shanghai Regional Specialist <br /> Gao Jie Phone: + 86-573-84185500
Fax: + 86-573-84185517
Email: md@csb-ep.com
Huzhou Regional Commissioner <br /> Gao Jianan Phone: + 86-573-84185533
Fax: + 86-573-84185517
Email: se04@csb-ep.com
Jiaxing Regional Specialist <br /> Gao Jianan Phone: + 86-573-84185533
Fax: + 86-573-84185517
Email: se04@csb-ep.com
Hangzhou Regional Specialist <br /> Gao Jianan Phone: + 86-573-84185533
Fax: + 86-573-84185517
Email: se04@csb-ep.com
Zhejiang Regional Commissioner <br /> Lu Junjie Phone: + 86-573-84185959
Fax: + 86-573-84185517
Email: se01@csb-ep.com
Regional Specialist of Zhangjiagang <br /> Weng Jiachao Tel: + 86-573-84185577
Fax: + 86-573-84185517
Email: se03@csb-ep.com
Changshu Regional Specialist <br /> Weng Jiachao Tel: + 86-573-84185577
Fax: + 86-573-84185517
Email: se03@csb-ep.com
Suzhou Regional Specialist <br /> Gao Jie Phone: + 86-573-84185500
Fax: + 86-573-84185517
Email: md@csb-ep.com
Changzhou Regional Commissioner <br /> Zhu Xi Phone: + 86-573-84186969
Fax: + 86-573-84185517
Email: se02@csb-ep.com
Wuxi Regional Commissioner <br /> Zhu Xi Phone: + 86-573-84186969
Fax: + 86-573-84185517
Email: se02@csb-ep.com
Regional Specialist of Jiangsu <br /> Weng Jiachao Tel: + 86-573-84185577
Fax: + 86-573-84185517
Email: se03@csb-ep.com
Guangdong Regional Commissioner <br /> Yu Zhenfei Tel: + 86-573-84186133
Fax: + 86-573-84185517
Email: sm@csb-ep.com
Chongqing Regional Specialist <br /> Gao Jianan Phone: + 86-573-84185533
Fax: + 86-573-84185517
Email: se04@csb-ep.com
Hunan Regional Specialist <br /> Gao Jianan Phone: + 86-573-84185533
Fax: + 86-573-84185517
Email: se04@csb-ep.com
Hubei Regional Commissioner <br /> Gao Jie Phone: + 86-573-84185500
Fax: + 86-573-84185517
Email: md@csb-ep.com
Beijing Regional Commissioner <br /> Zhu Xi Phone: + 86-573-84186969
Fax: + 86-573-84185517
Email: se02@csb-ep.com
Tianjin Regional Specialist <br /> Zhu Xi Phone: + 86-573-84186969
Fax: + 86-573-84185517
Email: se02@csb-ep.com
Regional Specialist of Shandong <br /> Weng Jiachao Tel: + 86-573-84185577
Fax: + 86-573-84185517
Email: se03@csb-ep.com
Anhui Regional Commissioner <br /> Weng Jiachao Tel: + 86-573-84185577
Fax: + 86-573-84185517
Email: se03@csb-ep.com
Hebei Regional Commissioner <br /> Weng Jiachao Tel: + 86-573-84185577
Fax: + 86-573-84185517
Email: se03@csb-ep.com
Henan Regional Commissioner <br /> Lu Junjie Phone: + 86-573-84185959
Fax: + 86-573-84185517
Email: se01@csb-ep.com
Jiangxi Regional Commissioner <br /> Lu Junjie Phone: + 86-573-84185959
Fax: + 86-573-84185517
Email: se01@csb-ep.com
Sichuan Regional Specialist <br /> Gao Jianan Phone: + 86-573-84185533
Fax: + 86-573-84185517
Email: se04@csb-ep.com
Fujian Regional Specialist <br /> Lu Junjie Phone: + 86-573-84185959
Fax: + 86-573-84185517
Email: se01@csb-ep.com
Regional Specialist of Shanxi <br /> Gao Jie Tel: + 86-573-84185500
Fax: + 86-573-84185517
Email: mm@csb-ep.com
Liaoning Regional Commissioner <br /> Weng Jiachao Tel: + 86-573-84185577
Fax: + 86-573-84185517
Email: se03@csb-ep.com
Jilin Regional Commissioner <br /> Weng Jiachao Tel: + 86-573-84185577
Fax: + 86-573-84185517
Email: se03@csb-ep.com
Heilongjiang Regional Commissioner <br /> Weng Jiachao Tel: + 86-573-84185577
Fax: + 86-573-84185517
Email: se03@csb-ep.com
Yunnan Regional Commissioner <br /> Zhu Xi Phone: + 86-573-84186969
Fax: + 86-573-84185517
Email: se02@csb-ep.com
Regional Specialist of Inner Mongolia <br /> Weng Jiachao Tel: + 86-573-84185577
Fax: + 86-573-84185517
Email: se03@csb-ep.com
Guangxi Regional Commissioner <br /> Zhu Xi Phone: + 86-573-84186969
Fax: + 86-573-84185517
Email: se02@csb-ep.com
Shaanxi Regional Commissioner <br /> Lu Junjie Phone: + 86-573-84185959
Fax: + 86-573-84185517
Email: se01@csb-ep.com
Guizhou Regional Commissioner <br /> Zhu Xi Phone: + 86-573-84186969
Fax: + 86-573-84185517
Email: se02@csb-ep.com
Gansu Regional Specialist <br /> Lu Junjie Phone: + 86-573-84185959
Fax: + 86-573-84185517
Email: se01@csb-ep.com
Regional Specialist of Ningxia <br /> Lu Junjie Phone: + 86-573-84185959
Fax: + 86-573-84185517
Email: se01@csb-ep.com
Xinjiang Regional Commissioner <br /> Lu Junjie Phone: + 86-573-84185959
Fax: + 86-573-84185517
Email: se01@csb-ep.com
Regional Specialist of Qinghai <br /> Lu Junjie Phone: + 86-573-84185959
Fax: + 86-573-84185517
Email: se01@csb-ep.com
Regional Specialist of Tibet <br /> Zhu Xi Phone: + 86-573-84186969
Fax: + 86-573-84185517
Email: se02@csb-ep.com
Hainan Regional Commissioner <br /> Zhu Xi Phone: + 86-573-84186969
Fax: + 86-573-84185517
Email: se02@csb-ep.com
Hong Kong Regional Specialist <br /> Cao Cong Tel: + 86-573-84185528
Fax: + 86-573-84183450
Email: Sales02@csb-ep.com
Taiwan Regional Specialist <br /> Cao Cong Tel: + 86-573-84185528
Fax: + 86-573-84183450
Email: Sales02@csb-ep.com
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