徐州NSK軸承潤滑的目的是用薄油膜將滾動體與滾動表面分開，并在運(yùn)行過程中在滾動表面上形成均勻的潤滑膜，從而減少軸承的內(nèi)摩擦和部件的磨損，防止燒結(jié)。其主要功能有：

The lubrication purpose of Xuzhou NSK bearings is to separate the rolling body from the rolling surface with thin oil film, and to b a unib lubrication film on the rolling surface during operation, so as to reduce the internal friction of bearings and wear of components and prevent sintering. Its main functions are:

1。潤滑軸承的所有部分，以防止金屬接觸，減少摩擦和磨損。

1. Lubricate all parts of the bearing to prevent bl contact and reduce friction and wear.

2。軸承的滾動接觸表面常形成適當(dāng)?shù)挠湍?，以延長軸承的使用壽命。

2. The rolling contact surface of bearings often bs appropriate oil film to prolong the service life of bearings.

3。油可以用來消*除摩擦產(chǎn)生的熱量或從外部產(chǎn)生的熱量，以防止徐州NSK軸承過熱和潤滑劑本身老化。

3. Oil can be used to eliminate heat generated by friction or from outside to prevent overheating of Xuzhou NSK bearing and aging of lubricant itself.

4。防止異物侵入軸承內(nèi)部、生銹、腐蝕等。

4. Prevent foreign body from intruding into bearing interior, rusting, corrosion, etc.

潤滑方法分為潤滑脂潤滑和油潤滑。為了使進(jìn)口軸承在軸承中發(fā)揮有*效的作用，首先要選擇合適的潤滑方法，如只考慮潤滑效果，主要是油潤滑效果。然而，潤滑脂潤滑具有簡化軸承周圍結(jié)構(gòu)的優(yōu)點，并被廣泛使用。近年來，使用潤滑脂的密封結(jié)構(gòu)徐州NSK軸承也取得了越來越多的應(yīng)用。

Lubrication bs are divided into grease lubrication and oil lubrication. In order to make imported bearings play an effective role in bearings, first of all, we should choose appropriate lubrication bs, such as only considering the lubrication effect, mainly the oil lubrication effect. However, grease lubrication has the advantage of simplifying the structure around the bearing and is widely used. In recent years, the sealing structure of Xuzhou NSK bearing with grease has also been applied more and more.

螺桿的選擇主要依據(jù)塑料的物理性能和塑料機(jī)械生產(chǎn)的技術(shù)規(guī)范。在選擇螺釘時**須考慮細(xì)節(jié)和規(guī)格。以下是螺桿的選擇規(guī)則。讓我們一起學(xué)習(xí)。

Screw selection is mainly based on the physical properties of plastic and the technical specifications of plastic machinery production. Details and specifications must be taken into account when selecting screws. The following are the selection rules of screw. Let's study together.

1。例如，在小型塑料擠出機(jī)中，45擠出機(jī)的螺桿是等距、不同**層次的全螺紋，螺桿的長度和直徑相對較小。主要用于小截面絕緣層和護(hù)套層的擠壓，擠壓速度快。

1. For example, in a small plastic extruder, the screw of 45 extruder is full thread with equal distance and different ** layers, and the length and diameter of the screw are relatively small. It is mainly used for extrusion of small cross-section insulating layer and sheath layer, with fast extrusion speed.

2。大螺桿的直徑通常大于150mm，例如150、200和250個擠出機(jī)。

2. The diameter of large screw is usually larger than 150 mm, such as 150, 200 and 250 extruders.

3。非晶態(tài)聚合物的在相對寬的溫度范圍內(nèi)完成。一般采用等距梯度螺釘。結(jié)晶聚合物的熔融溫度范圍比較窄。通常徐州NSK軸承采用等位移螺釘。

3. Amorphous polymers are prepared in a relatively wide temperature range. Equidistant gradient screw is generally used. The melting temperature range of crystalline polymers is relatively narrow. Usually Xuzhou NSK bearings adopt equal displacement screw.

4。中型螺桿采用全螺紋式，螺距相等，螺紋層次較深。螺紋長徑比大于小螺紋，根距從淺到深相等。在線程的末端有深線程，在根部有淺線程。塑料擠出體積大，不會影響螺桿的強(qiáng)度。擠出速度快，塑性好。它是普通中小型擠出機(jī)生產(chǎn)徐州NSK軸承絕緣層和護(hù)套層的理想螺桿。

4. Medium-sized screw adopts full thread type with equal pitch and deeper thread level. The ratio of length to diameter of thread is larger than that of small thread, and the root spacing is equal from shallow to deep. There are deep threads at the end of the thread and shallow threads at the root. Plastic extrusion volume is large, and it will not affect the strength of screw. The extrusion speed is fast and the plasticity is good. It is an ideal screw for the production of insulation and sheath of Xuzhou NSK bearings by ordinary small and medium extruders.

文章來自：徐州SKF軸承 www.wh-skf.com

Article from: Xuzhou SKF Bearing www.wh-skf.com

文章來自：徐州INA軸承 www.ina-china.cn

Article from: Xuzhou INA Bearing www.ina-China.cn

文章來自：徐州NSK軸承 www.klbbearings.com

Article from: Xuzhou NSK Bearing www.klbbearings.com

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