Double cardanic type DKM Coupling
C45 steel, Alloy steel, Aluminum etc. material
Standard and non-standard coupling available
With high quality and competitive price
Packing as per customer’s demand.
We are the leading top Chinese coupling manufacturer, and are specializing in various high quality Double cardanic type DKM
1. For high shaft displacements
2. 3-part double-cardanic
3. Reduced vibration and noise
4. The restoring forces resulting from displacements are very low
5. Increase of the total lifetime of all adjacent components (bearings,seals etc.)
6. Approved according to EC Standard 94/9/EC(Explosion Certificate ATEX 95)
7. Double-cardanic design without the need for bearing support or external guarding
8. Finish bore according to ISO fit H7, feather keyway according to DIN 6885 (JS9)
9. Size: 19, 24, 28, 38, 42, 48, 55, 65, 75, 90 mm
HRC Couplings Double cardanic type DKM Coupling are offered in the industry’s largest variety of stock bore/keyway combinations.
These couplings require no lubrication and provide highly reliable service for light, medium, and heavy duty electrical motor and
internal combustion power transmission applications. Applications include power transmission to industrial equipment such as
pumps, gear boxes, compressors, blowers, mixers, and conveyors.
Q: Are you trading company or manufacturer ?
A: Our group consists in 3 factories and 2 abroad sales corporations.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q:How long is your delivery time ? What is your terms of payment ?
A: Generally it is 40-45 days. The time may vary depending on the product and the level of customization. For standard products, the payment is: 30% T/T in advance ,balance before shippment.
Q:What is the exact MOQ or price for your product ?
A: As an OEM company, we can provide and adapt our products to a wide range of needs.Thus, MOQ and price may greatly vary with size, material and further specifications; For instance, costly products or standard products will usually have a lower MOQ. Please contact us with all relevant details to get the most accurate quotation.
If you have another question, please feel free to contact us.
Why Choose Us
Also I would like to take this opportunity to give a brief introduction of our CHINAMFG company: Our company is a famous
manufacturer of agriculture gearbox,worm reduce gearbox, PTO shafts, Sprockets ,rollar chains, bevel gear, pulleys and racks in
china. We have exported many products to our customers all over the world, we have long-time experience and strong technology
support. Some of our customer : Italy: GB GEABOX, SATI, CHIARAVALLI, AMA, CHINAMFG Germany: SILOKING ,GKN ,KTS France: Itfran,
Sedies, Kuhn Brazil: AEMCO ,STU USA: John Deere , BLOUNT, Weasler, Agco, Omni Gear, OODSCanada:JAY-LOR , CANIMEX ,RingBall
…… -> Our Company with over 12 year’s history and 1000 workers and 20 sales. -> With over 100 Million USD sales in 2017 ->
With advance machinery equipments -> With large work capacity and high quality control, ISO certified. …… you also can check
our website to know for more details, if you need our products catalogue, please contact with us.
Comparison of Beam Couplings to Other Coupling Types in Terms of Backlash and Torsional Stiffness
When considering coupling options for motion control systems, two critical performance characteristics to evaluate are backlash and torsional stiffness. Backlash refers to the amount of rotational play or free movement between the connected shafts, while torsional stiffness indicates a coupling’s ability to resist torsional deformation when transmitting torque. Let’s compare beam couplings to other common coupling types in terms of these factors:
- Beam Couplings:
Beam couplings generally exhibit low to minimal backlash due to their single or multiple helical beam design. The helical beams provide some flexibility to accommodate misalignment, but they maintain a relatively tight connection between the shafts, resulting in low backlash. This characteristic is especially valuable in precision motion control applications where eliminating play is essential for accurate positioning.
In terms of torsional stiffness, beam couplings offer moderate to high values. The helical beams provide good torsional rigidity, making them suitable for applications that demand precise torque transmission and minimal torsional deflection. However, compared to other types like disc or jaw couplings, beam couplings may have slightly lower torsional stiffness.
- Disc Couplings:
Disc couplings are known for their excellent torsional stiffness, providing robust torque transmission and minimal torsional deformation. They are ideal for applications requiring high precision and where torsional rigidity is critical.
Regarding backlash, disc couplings typically have low to negligible values. Their design allows for precise and direct transmission of torque between the shafts, resulting in minimal rotational play.
- Jaw Couplings:
Jaw couplings offer low to moderate torsional stiffness, making them suitable for applications with moderate torque requirements. They provide some flexibility to handle misalignment, but their torsional rigidity is not as high as disc couplings or certain types of beam couplings.
Backlash in jaw couplings can vary depending on the specific design and materials. Some jaw couplings may have slightly more backlash compared to beam or disc couplings due to the elastomeric spider element used in their construction.
- Oldham Couplings:
Oldham couplings offer low backlash performance due to their unique three-piece design, which incorporates two outer hubs and a middle disk. The design allows for consistent torque transmission and minimal play between the shafts.
Torsional stiffness in Oldham couplings is moderate, providing a balance between flexibility and rigidity. While not as rigid as disc couplings, they still offer reliable torque transmission for various motion control applications.
In summary, beam couplings offer low to minimal backlash and moderate to high torsional stiffness, making them suitable for precision motion control applications that require a balance between flexibility and rigidity. Disc couplings provide excellent torsional stiffness and low backlash, making them an ideal choice for high-precision applications. Jaw couplings and Oldham couplings offer moderate performance in both backlash and torsional stiffness and are well-suited for applications with moderate torque and misalignment compensation requirements.
When selecting a coupling type, consider the specific needs of your application, such as the required precision, torque capacity, and misalignment compensation. Each coupling type has its advantages and limitations, and choosing the right one will contribute to the overall performance and reliability of your motion control system.
Beam Couplings for Specific Industries and Specialized Applications
Yes, there are beam couplings specifically designed to meet the unique requirements of various industries and specialized applications. Manufacturers offer a wide range of beam coupling options with different materials, designs, and features tailored to specific use cases. Here are some examples of beam couplings designed for specific industries and applications:
- Food and Beverage Industry:
Beam couplings used in the food and beverage industry are typically made from stainless steel or food-grade materials to meet strict hygiene standards. These couplings are resistant to corrosion, easy to clean, and comply with FDA and USDA regulations. They are commonly found in conveyor systems, packaging equipment, and food processing machinery.
- Medical and Pharmaceutical Industry:
Beam couplings used in medical and pharmaceutical applications are designed to meet stringent cleanliness and precision requirements. They are often made from materials like stainless steel or plastic, ensuring biocompatibility and resistance to sterilization processes. These couplings are used in medical robots, imaging equipment, and precision medical devices.
- Aerospace and Defense Industry:
Beam couplings for aerospace and defense applications must withstand extreme environments, high accelerations, and vibrations. They are commonly made from lightweight yet strong materials like aluminum or high-performance alloys. These couplings are used in aircraft control systems, satellite components, and defense equipment.
Beam couplings used in robotics require high torsional stiffness and low inertia to optimize robotic performance. They are often made from materials like aluminum or carbon fiber. These couplings are used in robotic joints and end-effectors to achieve precise and rapid motion.
- Automotive Industry:
Beam couplings in the automotive industry need to handle high torque loads and provide reliable power transmission. They are commonly made from steel or aluminum to balance strength and weight. These couplings are used in automotive steering systems, transmissions, and engine components.
- Renewable Energy:
Beam couplings used in renewable energy applications, such as wind turbines and solar tracking systems, are designed to withstand harsh environmental conditions and provide precise motion control. They are often made from materials with good corrosion resistance. These couplings help optimize energy production and enhance system efficiency.
Additionally, there are beam couplings designed for specialized applications, such as vacuum environments, cleanrooms, or underwater operations. These couplings have specific features to address the challenges of their respective applications, ensuring reliable performance in their intended environments.
Manufacturers of beam couplings offer a wide selection of standard and custom designs to cater to the diverse needs of different industries and specialized applications. When choosing a beam coupling, it’s essential to consider the specific requirements of the application to ensure optimal performance and longevity.
Beam Coupling: Function and Role in Mechanical Systems
A beam coupling, also known as a helical coupling or helical beam coupling, is a type of flexible coupling used in mechanical systems to connect two shafts while compensating for misalignment and transmitting torque. It consists of one or more helical beams (usually made of metal) that connect the shafts and allow for angular, axial, and parallel misalignment while maintaining a torsionally rigid connection. Here’s how a beam coupling functions in mechanical systems:
A beam coupling typically has two ends, each with a helical beam. The beams are oriented at opposite angles to create a helix shape. The beams can vary in number, and some designs may include additional features like slits or keyways to enhance flexibility or improve torque capacity.
When the two shafts connected by a beam coupling are misaligned, the helical beams flex, allowing the coupling to compensate for different types of misalignment. Angular misalignment occurs when the shafts are not collinear, axial misalignment when they are not on the same axis, and parallel misalignment when the shafts are not at the same height. The flexibility of the helical beams allows the coupling to accommodate these misalignments, reducing the stresses on the connected components.
The helical beams of a beam coupling efficiently transmit torque from one shaft to the other. The beams twist and deform slightly under the applied torque but return to their original shape once the torque is removed. This torsional rigidity ensures that the coupling efficiently transfers rotational power while minimizing backlash and maintaining accurate positioning in motion control systems.
Damping and Vibration Absorption:
Beam couplings can provide some level of vibration dampening due to their inherent flexibility. The slight deformation of the beams can absorb shocks and vibrations, reducing the transmission of vibrations between the connected shafts.
Beam couplings find applications in various mechanical systems, including robotics, CNC machines, stepper motor drives, and other motion control systems. They are especially useful in applications that require moderate misalignment compensation, high torsional rigidity, and low backlash.
While beam couplings offer several advantages, they do have some limitations. They may not be suitable for applications with high misalignment requirements or high torque loads, as excessive misalignment or torque can cause premature wear or failure of the coupling. Additionally, beam couplings may have limited axial stiffness, making them less suitable for applications with significant axial loads.
In summary, a beam coupling is a flexible coupling with helical beams that allows for misalignment compensation, efficient torque transmission, and some vibration dampening. Its design and flexibility make it an excellent choice for various mechanical systems, particularly those that require moderate misalignment compensation and high torsional rigidity.
editor by CX 2023-11-21