China Drive shaft accessories for progressive cavity pumpmononetzschseepex set screw shaft collar

Condition: New
Weight (KG): 2
Video outgoing-inspection: Provided
Machinery Test Report: Provided
Marketing Type: Ordinary Product
Warranty of core components: 6 Months
Core Components: Driver shaft
Warranty: 6 Months
Applicable Industries: Garment Shops, Building Material Shops, Manufacturing Plant, Food & Beverage Factory, Farms, Restaurant, Retail, Food Shop, Printing Shops, Energy & Mining, Food & Beverage Shops, Other, Drinking water treatment, Industrial Utilities, Mining industry, Wastewater Transport and Flood Control, Water Treatment Solutions, electronic industry, nonmetal industry
Showroom Location: china
Power: 0.75-90kw
Material: Cast Iron/SS304/SS316/SS316L/duplex Stainless/SS904L
Customized support: OEM
After-sales Service: 1 Year
Certification: CE, ISO
Screw Suction Method: Single Suction
Theory: Rotor Pump
Motor: optional
Structure: SCREW PUMP
Power Source: Electric
Packaging Details: Standard Export Package
Port: HangZhou

The screw pump working part is composed of rotating eccentric rotor and stator. The rotor and stator have 2 contact points in every transverse section. These contact points from 2 sealing lines along the working parts of rotor (or stator).Thus comes into 1 or a few sealing chambers when the rotor rotating. The media entering the sealing chamber remove smoothly from suction end to discharge end along the sealing chamber. During the whole running, the pressure pulsation is very low which has no any effect CZPT the intrinsic construction of pumped media.

We can produce all kinds of substitutes, the quality is the same as the original, can also meet the needs of various materials. The same wall thickness stator and hollow rotor is our characteristic process, its heat dissipation and pressure resistance is better than the same grade of stator and rotor. Therefore, we have more solutions for the diversified needs of customers.

Packaging & Shipping

Company Information

HangZhou RoNice Pumps Device Co., Ltd. (RoNice) is located in HangZhou, a famous city for the good name of nine-province thoroughfare. RoNice is a CZPT diversified enterprise integrating research, Synchronous Permanent Magnet Refrigerator Condenser Fan Motor 49Tyj 110V Motor development, production, sales and service in central China. Now, the company has a professional team of high-tech young talents in design and development.The company mainly produces screw pump, sludge cutter, spiral sludge dewatering machine, dosing device, agitator, screw conveyor and other environmental protection equipment. The products can transport various acid, alkali, salt, oils, high concentration viscous, cold and hot water, corrosive and other media, widely used in: environmental sewage treatment, refuse disposal, paper printing and dyeing, food and pharmaceutical, water conservancy and hydropower, urban water supply, municipal engineering, industrial production, petroleum, chemical, shipbuilding and other fields.With a strong production capacity and excellent technical team, the company established a complete automatic processing technology, and possesses advanced technology and formula at home and abroad to produce stator, Farm machinery 60cm harvesting width potato harvester onion digger garlic harvester rotor high-precision CNC processing equipment, automatic polishing and welding equipment, infrared detection and laser equipmentOur company is always in pursuit of meeting the needs of customers, making breakthroughs by innovation, gaining credibility by quality, seeking development by integrity, and realizing long-term development by service. RoNice products are sold at home and abroad. We sincerely invite colleagues from all walks of life to visit our company, and create lasting glory with us.

Buyers Attention:1.Can screw pump dry running ?No, the conveying elements are permanently in contact with 1 another, which means that dry running must be avoided in progressive cavity pumps. The CZPT dry-running protection device offers reliable protection.2.Our services1 Our screw pump series products, reasonable price, quality service, provide quality inspection. Welcome to sample Custom-made.2 we have a special quality Supervision Department to ensure the quality of mass production.3 If the product has quality problems, we will deal with the first time, find out the cause, take responsibility.4 If you are interested in our products and companies, please leave a message or email us, we will give you an answer within 24 hours3.Why choose us ?1. Factory Direct Sales, no intermediate links, competitive price2. The original machine factory, the production of stable product quality, do not use low quality equipment.3. Ensure ontime delivery, procurement, we can provide the best quality of service control, transportation, documentation and so on.4. We provide samples and OEM services.5. We will reply to your enquiry within 24 hours.6. professional team, so that our customers feel relaxed and comfortable working with us in7. Please contact us by email and we will send you more pictures for more choices of our products.4.How to make an order for CZPT screw pump ? (1) After understanding the specific parameters, the model was determined (2) Client arrange 30% deposit after receiving our PI(proforma invoice), aluminium tipping trailer FRP600 6.46m RIB680 6.75m boat trailers (3) We start bulk production and finish production within agreed lead time(4) We send shipping documents to client(5) Client arrange balance payment(6)We arrange shipment , and send original documents or telex release the goods


What Are Screw Shaft Threads?

A screw shaft is a threaded part used to fasten other components. The threads on a screw shaft are often described by their Coefficient of Friction, which describes how much friction is present between the mating surfaces. This article discusses these characteristics as well as the Material and Helix angle. You’ll have a better understanding of your screw shaft’s threads after reading this article. Here are some examples. Once you understand these details, you’ll be able to select the best screw nut for your needs.

Coefficient of friction between the mating surfaces of a nut and a screw shaft

There are two types of friction coefficients. Dynamic friction and static friction. The latter refers to the amount of friction a nut has to resist an opposing motion. In addition to the material strength, a higher coefficient of friction can cause stick-slip. This can lead to intermittent running behavior and loud squeaking. Stick-slip may lead to a malfunctioning plain bearing. Rough shafts can be used to improve this condition.
The two types of friction coefficients are related to the applied force. When applying force, the applied force must equal the nut’s pitch diameter. When the screw shaft is tightened, the force may be removed. In the case of a loosening clamp, the applied force is smaller than the bolt’s pitch diameter. Therefore, the higher the property class of the bolt, the lower the coefficient of friction.
In most cases, the screwface coefficient of friction is lower than the nut face. This is because of zinc plating on the joint surface. Moreover, power screws are commonly used in the aerospace industry. Whether or not they are power screws, they are typically made of carbon steel, alloy steel, or stainless steel. They are often used in conjunction with bronze or plastic nuts, which are preferred in higher-duty applications. These screws often require no holding brakes and are extremely easy to use in many applications.
The coefficient of friction between the mating surfaces of t-screws is highly dependent on the material of the screw and the nut. For example, screws with internal lubricated plastic nuts use bearing-grade bronze nuts. These nuts are usually used on carbon steel screws, but can be used with stainless steel screws. In addition to this, they are easy to clean.

Helix angle

In most applications, the helix angle of a screw shaft is an important factor for torque calculation. There are two types of helix angle: right and left hand. The right hand screw is usually smaller than the left hand one. The left hand screw is larger than the right hand screw. However, there are some exceptions to the rule. A left hand screw may have a greater helix angle than a right hand screw.
A screw’s helix angle is the angle formed by the helix and the axial line. Although the helix angle is not usually changed, it can have a significant effect on the processing of the screw and the amount of material conveyed. These changes are more common in two stage and special mixing screws, and metering screws. These measurements are crucial for determining the helix angle. In most cases, the lead angle is the correct angle when the screw shaft has the right helix angle.
High helix screws have large leads, sometimes up to six times the screw diameter. These screws reduce the screw diameter, mass, and inertia, allowing for higher speed and precision. High helix screws are also low-rotation, so they minimize vibrations and audible noises. But the right helix angle is important in any application. You must carefully choose the right type of screw for the job at hand.
If you choose a screw gear that has a helix angle other than parallel, you should select a thrust bearing with a correspondingly large center distance. In the case of a screw gear, a 45-degree helix angle is most common. A helix angle greater than zero degrees is also acceptable. Mixing up helix angles is beneficial because it allows for a variety of center distances and unique applications.

Thread angle

The thread angle of a screw shaft is measured from the base of the head of the screw to the top of the screw’s thread. In America, the standard screw thread angle is 60 degrees. The standard thread angle was not widely adopted until the early twentieth century. A committee was established by the Franklin Institute in 1864 to study screw threads. The committee recommended the Sellers thread, which was modified into the United States Standard Thread. The standardized thread was adopted by the United States Navy in 1868 and was recommended for construction by the Master Car Builders’ Association in 1871.
Generally speaking, the major diameter of a screw’s threads is the outside diameter. The major diameter of a nut is not directly measured, but can be determined with go/no-go gauges. It is necessary to understand the major and minor diameters in relation to each other in order to determine a screw’s thread angle. Once this is known, the next step is to determine how much of a pitch is necessary to ensure a screw’s proper function.
Helix angle and thread angle are two different types of angles that affect screw efficiency. For a lead screw, the helix angle is the angle between the helix of the thread and the line perpendicular to the axis of rotation. A lead screw has a greater helix angle than a helical one, but has higher frictional losses. A high-quality lead screw requires a higher torque to rotate. Thread angle and lead angle are complementary angles, but each screw has its own specific advantages.
Screw pitch and TPI have little to do with tolerances, craftsmanship, quality, or cost, but rather the size of a screw’s thread relative to its diameter. Compared to a standard screw, the fine and coarse threads are easier to tighten. The coarser thread is deeper, which results in lower torques. If a screw fails because of torsional shear, it is likely to be a result of a small minor diameter.


Screws have a variety of different sizes, shapes, and materials. They are typically machined on CNC machines and lathes. Each type is used for different purposes. The size and material of a screw shaft are influenced by how it will be used. The following sections give an overview of the main types of screw shafts. Each one is designed to perform a specific function. If you have questions about a specific type, contact your local machine shop.
Lead screws are cheaper than ball screws and are used in light-duty, intermittent applications. Lead screws, however, have poor efficiency and are not recommended for continuous power transmission. But, they are effective in vertical applications and are more compact. Lead screws are typically used as a kinematic pair with a ball screw. Some types of lead screws also have self-locking properties. Because they have a low coefficient of friction, they have a compact design and very few parts.
Screws are made of a variety of metals and alloys. Steel is an economical and durable material, but there are also alloy steel and stainless steel types. Bronze nuts are the most common and are often used in higher-duty applications. Plastic nuts provide low-friction, which helps reduce the drive torques. Stainless steel screws are also used in high-performance applications, and may be made of titanium. The materials used to create screw shafts vary, but they all have their specific functions.
Screws are used in a wide range of applications, from industrial and consumer products to transportation equipment. They are used in many different industries, and the materials they’re made of can determine their life. The life of a screw depends on the load that it bears, the design of its internal structure, lubrication, and machining processes. When choosing screw assemblies, look for a screw made from the highest quality steels possible. Usually, the materials are very clean, so they’re a great choice for a screw. However, the presence of imperfections may cause a normal fatigue failure.

Self-locking features

Screws are known to be self-locking by nature. The mechanism for this feature is based on several factors, such as the pitch angle of the threads, material pairing, lubrication, and heating. This feature is only possible if the shaft is subjected to conditions that are not likely to cause the threads to loosen on their own. The self-locking ability of a screw depends on several factors, including the pitch angle of the thread flank and the coefficient of sliding friction between the two materials.
One of the most common uses of screws is in a screw top container lid, corkscrew, threaded pipe joint, vise, C-clamp, and screw jack. Other applications of screw shafts include transferring power, but these are often intermittent and low-power operations. Screws are also used to move material in Archimedes’ screw, auger earth drill, screw conveyor, and micrometer.
A common self-locking feature for a screw is the presence of a lead screw. A screw with a low PV value is safe to operate, but a screw with high PV will need a lower rotation speed. Another example is a self-locking screw that does not require lubrication. The PV value is also dependent on the material of the screw’s construction, as well as its lubrication conditions. Finally, a screw’s end fixity – the way the screw is supported – affects the performance and efficiency of a screw.
Lead screws are less expensive and easier to manufacture. They are a good choice for light-weight and intermittent applications. These screws also have self-locking capabilities. They can be self-tightened and require less torque for driving than other types. The advantage of lead screws is their small size and minimal number of parts. They are highly efficient in vertical and intermittent applications. They are not as accurate as lead screws and often have backlash, which is caused by insufficient threads.

China Drive shaft accessories for progressive cavity pumpmononetzschseepex     set screw shaft collarChina Drive shaft accessories for progressive cavity pumpmononetzschseepex     set screw shaft collar
editor by czh 2023-06-27