Product Description
Product Description
A beam coupling, also known as helical coupling, is a flexible coupling for transmitting torque between 2 shafts while allowing for angular misalignment, parallel offset and even axial motion, of 1 shaft relative to the other. This design utilizes A single piece of material and becomes flexible by removal of material along a spiral path resulting in a curved flexible beam of helical shape. Since it is made from a single piece of material, the Beam Style coupling does not exhibit the backlash found in some multi-piece couplings. Another advantage of being an all machined coupling is the possibility to incorporate features into the final product while still keep the single piece integrity.
Changes to the lead of the helical beam provide changes to misalignment capabilities as well as other performance characteristics such as torque capacity and torsional stiffness. It is even possible to have multiple starts within the same helix.
The material used to manufacture the beam coupling also affects its performance and suitability for specific applications such as food, medical and aerospace. Materials are typically aluminum alloy and stainless steel, but they can also be made in acetal, maraging steel and titanium. The most common applications are attaching encoders to shafts and motion control for robotics.
Features
1.Materail: Aluminium alloy or steel
2.Elastic Spider: Three type of Elatic Spider can be choosed 86SH. A 92SH. A 98SH. A
3.Surface treatment: black finished / Anodizing
4.High sensitivity High torque rigid Zero back lash
5.Type of shaft lock: Set screw or Clamp type
6.Stock to ensure a prompt delivery with in 2 weeks.
7.High-performance with competitive prices.
Except our standard parts, we also can make the parts according customers’ drawing or design according customer requirement, please send us enquiry if there any need.
Detailed Photos
Product Parameters
Packaging & Shipping
| Package | Standard suitable package / Pallet or container. Polybag inside export carton outside, blister and Tape and reel package available. If customers have specific requirements for the packaging, we will gladly accommodate. |
| Shipping |
10-20working days ofter payment receipt comfirmed (based on actual quantity). Professional goods shipping forward. |
Company Profile
FAQ
Q: Are you trading company or manufacturer?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
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: What is your terms of payment ?
A: Payment=1000USD, 30% T/T in advance ,balance before shippment.
We warmly welcome friends from domestic and abroad come to us for business negotiation and cooperation for mutual benefit. To supply customers excellent quality products with good price and punctual delivery time is our responsibility.
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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.
Materials Used in Manufacturing Beam Couplings
Beam couplings are commonly made from various materials, each offering unique properties that suit different application requirements. Some of the most common materials used in manufacturing beam couplings include:
- Aluminum:
Aluminum is a lightweight and cost-effective material commonly used in beam coupling construction. Aluminum beam couplings are ideal for applications where weight reduction is essential, such as in robotics or aerospace systems. They provide moderate mechanical strength and flexibility while offering good resistance to corrosion.
- Stainless Steel:
Stainless steel is a popular choice for beam couplings due to its excellent mechanical properties and high corrosion resistance. Stainless steel couplings are well-suited for demanding applications that require strength, durability, and resistance to harsh environments. They are commonly used in industries such as food processing, medical equipment, and marine applications.
- Brass:
Brass is a material known for its good electrical conductivity and moderate strength. Brass beam couplings are suitable for specific applications that require electrical grounding or where non-magnetic properties are essential. However, compared to stainless steel or aluminum, brass couplings may have slightly lower mechanical strength and corrosion resistance.
- Plastic/Polymer:
Plastic or polymer beam couplings are chosen for their lightweight and cost-effective nature. They are often used in applications where weight reduction is critical, and they offer electrical insulation properties. However, plastic couplings may have lower mechanical strength compared to metal couplings and are not suitable for high-torque applications or extreme environmental conditions.
- Carbon Steel:
Carbon steel is a robust and widely used material for beam couplings. Carbon steel couplings offer good mechanical strength and are suitable for various industrial applications. However, they may not provide the same level of corrosion resistance as stainless steel and may require proper maintenance to prevent rusting.
The choice of material depends on the specific needs of the application, including factors such as required strength, weight constraints, environmental conditions, and corrosion resistance. Manufacturers often provide a range of material options for their beam couplings to accommodate diverse industrial and commercial uses.
Differences between Single-Beam and Multi-Beam Couplings
Single-beam and multi-beam couplings are two common types of beam couplings used in motion control applications. While they both provide flexibility for misalignment compensation, they have distinct differences in design and performance. Let’s explore these differences:
- Structure:
A single-beam coupling consists of a single helical beam that connects the two shafts. It is a straightforward design with a single helix providing angular misalignment compensation. On the other hand, a multi-beam coupling has multiple helical beams arranged in parallel around the circumference of the coupling. The multiple beams increase its flexibility and enable compensation for angular, axial, and parallel misalignment.
- Misalignment Compensation:
Both single-beam and multi-beam couplings are capable of compensating for misalignment between connected shafts. However, the level of compensation differs between the two types. Single-beam couplings are more suitable for applications with primarily angular misalignment. They can handle small amounts of axial and parallel misalignment but are less effective than multi-beam couplings in this regard. Multi-beam couplings, with their multiple beams, can efficiently accommodate more extensive misalignment in all three axes, making them suitable for applications with more complex misalignment requirements.
- Torsional Rigidity:
Single-beam couplings typically have lower torsional rigidity compared to multi-beam couplings. This means that single-beam couplings may exhibit slightly more torsional flexibility and compliance under torque compared to their multi-beam counterparts. As a result, multi-beam couplings are often preferred in applications where high torsional rigidity is essential to maintain precise motion control and minimize backlash.
- Applications:
The choice between single-beam and multi-beam couplings depends on the specific requirements of the application. Single-beam couplings are commonly used in applications where space is limited, and primarily angular misalignment needs to be compensated. They are suitable for less demanding misalignment scenarios and can be found in various motion control systems, including small automation machinery and robotics.
Multi-beam couplings are chosen for applications that require more comprehensive misalignment compensation. They excel in situations where misalignment can occur in multiple axes and are often used in precision motion control systems, optical equipment, and applications with high torsional rigidity and accuracy requirements.
In summary, single-beam and multi-beam couplings both offer flexibility for misalignment compensation in motion control systems. Single-beam couplings are simple, space-efficient, and suitable for applications with primarily angular misalignment. On the other hand, multi-beam couplings provide enhanced misalignment compensation in all three axes and offer higher torsional rigidity, making them ideal for precision applications with more complex misalignment requirements.
editor by CX 2024-05-14