Product Description
Applications
ST Series are non-valved couplings for applications where maximum flow is required. Their smooth, open bore offers the lowest pressure drop of any quickcoupling design and is ideal for applications such as high-pressure water and steam washers, carpet cleaners and mold coolant lines. They are often used in flood processing, on fluid and dye transfer lines.
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| Part No. (Brass) | Part No. (stainless) | Part No. (Steel) | Thread Size NPT | D Overall Length (in.) |
E Exposed Length (in.) |
F Hex Size (in.) |
G Largest Diameter (in.) |
| ST1PM | ST1PM-304 | ST1PM-S | 1/8 | 1.04 | 0.63 | 0.44 | 0.56 |
| ST2PM | ST2PM-304 | ST2PM-S | 1/4 | 1.53 | 0.81 | 0.56 | 0.65 |
| ST3PM | ST3PM-304 | ST3PM-S | 3/8 | 1.69 | 0.86 | 0.69 | 0.79 |
| ST4PM | ST4PM-304 | ST4PM-S | 1/2 | 1.94 | 1.01 | 0.88 | 1.01 |
| ST6PM | ST6PM-S | 3/4 | 2.19 | 1.11 | 1.06 | 1.23 | |
| ST8PM | ST8PM-S | 1 | 2.51 | 1.34 | 1.38 | 1.59 |
About our company:
HangZhou HI-TECH SMART MACHINERY CO LTD was established in 2013, is a high tech company specialized in pneumatic components and microduct accessories manufacturing. After years’ hard working, it has owned 2 factories now, and the products include pneumatic vibrators, air cylinders, solenoid valves, air treatment units, pneumatic fittings&mufflers, microduct connectors and other accessories. We have sold our goods to more than 60 countries, and that number is still increasing.
Our Services & Strength
1. We have more than 10 years experience on pneumatic products;
2. Excellent quality control has always been the goal of our practice;
3. You can purchase most of the pneumatic products here;
4. Sample orders and orders with a small number of products are acceptable;
5. OEM, ODM is ok for us. Not only the label and packaging, but also the personalized customization of the product itself;
6. Any requirements, just feel free to let us know.
Company frofile
Our company is specialized in manufactuing all kinds of valves,hydro-pneumatic components,alumium parts and plastic parts.Our main products are including pneumatic cylinder,solenoid valve,air filter,air regulator,air lubricator,pneumatic fitting,hydraulic fitting,tubes etc.as below;
*ISO Standard Cylinder:DNC/SI(ISO6431&6432)
*Standard Cylinder:SC/SU,
*Mini Cylinder:MAL,MA,,MI,CJ2B,CDM2B
*Compact Cylinder:SDA,CQ2
*Cylinder:CU,TN,STM,MGP
*Solenoid Valve:3v1,3v,4v,4M,3A,4A ,drain valve etc
*Air Source Treatment Unit:A,HA,HNA,T,A/B,etc
*pneumatic accessories:fitting,hand valve,muffler,tube,pressure switch
*Pneumatic Vibrator: GT series,K seies,R series,SK series,FP series,NTP series etc. /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
Are there Specific Temperature and Torque Limits for Different Bellows Coupling Materials?
Bellows couplings are available in a variety of materials, each with its own temperature and torque limits. The choice of material depends on the specific application requirements, including environmental conditions, operating temperatures, and torque demands. Here are some commonly used bellows coupling materials and their respective temperature and torque limits:
- Stainless Steel: Stainless steel bellows couplings are widely used due to their excellent corrosion resistance and high strength. They can operate in a wide temperature range, typically from -40°C to 400°C (-40°F to 752°F). The torque limits for stainless steel bellows couplings vary based on their size and construction but can range from a few Nm to several hundred Nm.
- Aluminum: Aluminum bellows couplings are lightweight and offer good corrosion resistance. They are suitable for applications with lower torque requirements. The temperature limits for aluminum couplings range from -30°C to 150°C (-22°F to 302°F), and the torque limits generally range from a few Nm to around 50 Nm.
- Brass: Brass bellows couplings are known for their electrical conductivity and are often used in applications where electrical isolation is required. They have temperature limits similar to aluminum couplings, ranging from -30°C to 150°C (-22°F to 302°F), and torque limits comparable to aluminum couplings.
- Titanium: Titanium bellows couplings offer exceptional strength and corrosion resistance, making them suitable for demanding applications. They can operate in a temperature range of -50°C to 300°C (-58°F to 572°F), and their torque limits range from a few Nm to several hundred Nm.
- Inconel: Inconel is a high-temperature alloy that provides excellent performance in extreme heat and corrosive environments. Inconel bellows couplings can operate in temperatures from -60°C to 600°C (-76°F to 1112°F) and have high torque capacities, ranging from a few Nm to over a thousand Nm.
- Plastics: Certain plastic materials, such as PEEK (Polyether Ether Ketone), are used for bellows couplings in specialized applications. Plastic couplings offer lower torque capacities compared to metal couplings but can operate in a temperature range of -30°C to 250°C (-22°F to 482°F).
It is essential to consult the manufacturer’s specifications and guidelines to select the appropriate bellows coupling material for your specific application. Choosing the right material ensures that the coupling can withstand the operating conditions and delivers reliable performance throughout its service life.
How do bellows couplings ensure torque transmission and minimize backlash in precision systems?
Bellows couplings are used in precision systems to transmit torque between two shafts while minimizing backlash, which is crucial for maintaining accurate positioning and reducing vibrations. Here’s how they achieve these functions:
- Torsional Rigidity: Bellows couplings are designed with a series of flexible metal convolutions (bellows) that allow angular misalignment between the shafts. The metal bellows provide high torsional rigidity, ensuring efficient torque transmission from one shaft to the other with minimal power loss.
- Backlash Elimination: Backlash is the play or movement that occurs when reversing the direction of rotation in a mechanical system. Bellows couplings are ideal for precision applications because they have virtually zero backlash. The absence of backlash helps maintain accurate positioning and prevents undesired movements in precision machinery.
- Compensation for Misalignment: In precision systems, shaft misalignments can occur due to manufacturing tolerances, thermal expansion, or other factors. Bellows couplings can accommodate angular, axial, and parallel misalignments, ensuring smooth operation and preventing excessive stress on the shafts and connected components.
- Vibration Damping: The flexible nature of bellows couplings also provides some level of vibration damping. This feature helps reduce vibrations and shocks in the system, which is especially important in sensitive precision equipment to maintain stability and accuracy.
- Compact Design: Bellows couplings are compact and lightweight compared to some other coupling types, making them suitable for applications where space and weight restrictions are important considerations.
In summary, bellows couplings play a crucial role in precision systems by ensuring efficient torque transmission, minimizing backlash, compensating for misalignments, dampening vibrations, and providing a compact design. These features make them an excellent choice for high-precision machinery and applications where accuracy and reliability are paramount.
How do you Select the Right Bellows Coupling for Specific Motion Control Systems?
Selecting the right bellows coupling for a motion control system involves considering several key factors to ensure optimal performance and reliability. Here are the steps to help you make an informed decision:
- Application Requirements: Understand the specific requirements of your motion control system. Consider factors such as torque capacity, speed, angular misalignment, axial motion, and environmental conditions.
- Type of Bellows Coupling: Determine the type of bellows coupling that best suits your application. Choose from single bellows, double bellows, flexible beam with bellows, torsionally rigid, miniature, or high-temperature bellows coupling, depending on your needs.
- Torsional Stiffness: If your application requires high torsional stiffness to maintain precise motion control, consider bellows couplings with torsionally rigid designs.
- Misalignment Compensation: Evaluate the amount of misalignment your system may encounter and choose a bellows coupling with the appropriate misalignment compensation capabilities.
- Torque and Speed Ratings: Check the torque and speed ratings of the coupling to ensure they meet or exceed the requirements of your motion control system.
- Space Constraints: Consider the available space for the coupling. For applications with limited space, miniature or compact bellows couplings may be suitable.
- Environmental Conditions: If your application involves extreme temperatures or corrosive environments, opt for a high-temperature or corrosion-resistant bellows coupling material.
- Customization: Some applications may require customized solutions. In such cases, consult with coupling manufacturers to explore the possibility of tailored designs.
- Consult with Experts: When in doubt, seek advice from coupling manufacturers or engineering experts who can offer valuable insights and recommendations based on your specific application needs.
By carefully considering these factors, you can select the right bellows coupling that aligns with your motion control system’s requirements and ensures smooth and efficient power transmission. Additionally, choosing high-quality and reputable coupling suppliers will contribute to the overall success and reliability of your motion control application.
editor by CX 2024-03-14