Product Description

GRC Aluminum alloy bellows clamping coupling


Description of GRC Aluminum alloy bellows clamping coupling
>The material is aluminum alloy, and the middle bellows is made of stainless steel with excellent corrosion resistance
>Laser welding is used between bellows and shaft sleeve, with zero rotation clearance, suitable for CHINAMFG and reverse rotation
>Bellows structure can effectively compensate radial, angular and axial deviation
>Designed for servo motor stepper motor
>Fastening method of clamping screw

Dimensions of GRC Aluminum alloy bellows clamping coupling

model parameter common bore diameter d1,d2 ΦD L L1 L2 L3 N F M tightening screw torque
GRC-16×27 4,5,6,6.35,7,8 16 27 7.5 2 8 13.5 3 M2.5 1
GRC-20×32 5,6,6.35,7,8,9,9.525,10 20 32 7.2 2.8 12 18 3.5 M3 1.5
GRC-22.5×34 5,6,6.35,7,8,9,9.525,10,11,12 22.5 34 8.05 2.8 12.3 20.2 4.5 M3 1.5
GRC-25×37 6,6.35,7,8,9,9,9.525,10,12 25 37 9.5 3 12 20.2 4.5 M3 1.5
GRC-32×42 8,9,9.525,10,11,12,12.7,14,15 32 42 8 4 18 27.2 5.5 M4 2.5
GRC-40×55 8,9,9.525,10,11,12,12.7,14,15,16,17,18,19,20 40 55 11.5 6 20 34.5 6.5 M5 7
GRC-55×72 10,11,12,12.7,14,15,16,17,18,19,20,22,24,25 55 72 16.5 6 27 51.9 10 M6 12
GRC-65×81 10,11,12,12.7,14,15,16,17,18,19,20,22,24,25,28,30,32,35,38 65 81 19.5 7 28 60.5 10.5 M6 12

model parameter Rated torque
allowable eccentricity
allowable deflection angle
allowable axial deviation
maximum speed
static torsional stiffness
moment of inertia
Material of shaft sleeve surface treatment weight
GRC-16×27 0.8 0.1 1.5 + 0.4 -1.2 9400 150 8.0×10-7 High strength aluminum alloy Anodizing treatment 8
GRC-20×32 1.5 0.15 2 + 0.6 -1.8 7600 220 2.2×10-6 13
GRC-22.5×34 1.8 0.15 2 + 0.6 -1.8 6000 300 6.5×10-6 22
GRC-25×37 2.0 0.15 2 + 0.8 -1.8 6100 330 6.9×10-6 30
GRC-32×42 2.5 0.2 2 + 0.8 -2.5 4700 490 2.1×10-5 53
GRC-40×55 6.4 0.2 2 + 0.8 -2.5 4200 530 2.3×10-5 97
GRC-55×72 12 0.2 2 + 0.8 -2.5 3900 860 3.7×10-5 200
GRC-65×81 18 0.2 2 + 0.7 -2.5 3500 900 3.6×10-5 380



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bellows coupling

Can Bellows Couplings Handle Angular and Parallel Misalignments Simultaneously?

Bellows couplings are designed to handle both angular and parallel misalignments simultaneously, making them versatile for various mechanical power transmission applications. The bellows element, typically made of a thin-walled metal structure, allows for flexibility in multiple directions, enabling the coupling to accommodate different types of misalignments.

1. Angular Misalignment: Angular misalignment occurs when the driving and driven shafts are not collinear and form an angle with each other. This type of misalignment can happen in applications where the shafts are not perfectly aligned due to assembly errors, shaft deflection, or thermal expansion. The bellows coupling’s design allows it to flex in response to angular misalignment, transmitting torque smoothly without inducing additional stress on the connected components.

2. Parallel Misalignment: Parallel misalignment, also known as lateral misalignment, happens when the axes of the driving and driven shafts are parallel but not concentric. This misalignment may occur due to inaccurate alignment during installation or shaft deflection under load. The bellows coupling’s flexible bellows element can also compensate for this type of misalignment, ensuring that the shafts remain parallel enough to prevent excessive forces and vibrations.

Simultaneous Misalignments: Bellows couplings are unique in their ability to handle both angular and parallel misalignments simultaneously. As the bellows element flexes in multiple directions, it can compensate for misalignments in both planes without imposing significant side loads on the shafts or bearings. This capability makes bellows couplings well-suited for precision motion control systems, where maintaining accurate alignment is crucial to ensure smooth operation and longevity of the equipment.

It is important to note that while bellows couplings can handle a certain degree of misalignment, excessive misalignments should be avoided to prevent premature wear and reduce the efficiency of the coupling. Regular maintenance and inspections can help identify and correct misalignment issues early, ensuring optimal performance and extended service life of the bellows coupling and the entire mechanical system.

bellows coupling

What are the Standard Sizes and Dimensions Available for Bellows Couplings?

Bellows couplings come in a variety of standard sizes and dimensions to accommodate different shaft diameters and application requirements. The sizes and dimensions of bellows couplings can vary depending on the manufacturer and specific series of the coupling. However, some common standard sizes and dimensions are as follows:

  • Shaft Diameter: Bellows couplings are available in a range of shaft diameters, typically starting from a few millimeters up to several inches. Common sizes include 6mm, 8mm, 10mm, 12mm, 15mm, 20mm, 25mm, 30mm, and larger.
  • Length: The overall length of a bellows coupling can vary based on the design and intended application. Standard lengths are usually specified by the manufacturer and can range from around 20mm to over 100mm, with longer versions available for certain applications.
  • Outer Diameter: The outer diameter of a bellows coupling is determined by the coupling’s construction and can vary across different models. It is essential to consider the available space and installation requirements when choosing a bellows coupling based on its outer diameter.
  • Maximum Torque Rating: Each bellows coupling has a maximum torque rating that defines the maximum amount of torque it can transmit without failure. The torque rating is typically specified in Newton-meters (Nm) or pound-inches (lb-in) and varies between different sizes and materials.
  • Maximum Speed Rating: Bellows couplings are rated for a maximum rotational speed, usually expressed in revolutions per minute (RPM). The speed rating is an important consideration for high-speed applications to avoid exceeding the coupling’s critical speed or causing undue stress on the components.
  • Material: Bellows couplings can be made from various materials, including stainless steel, aluminum, and other alloys. The choice of material depends on factors such as the application’s requirements, environmental conditions, and the need for corrosion resistance.

It’s important to note that these dimensions and specifications may vary depending on the manufacturer and the specific series or model of the bellows coupling. When selecting a bellows coupling, it is crucial to consider the mechanical and performance requirements of the application to ensure proper fit and optimal performance.

bellows coupling

Where can I find reputable suppliers or manufacturers of bellows couplings for my specific machinery requirements?

If you are looking for reputable suppliers or manufacturers of bellows couplings to meet your specific machinery requirements, there are several avenues you can explore:

  1. Online Directories: Utilize online industrial directories and platforms that specialize in connecting buyers with suppliers. Websites like Thomasnet, Alibaba, and GlobalSpec can help you find a wide range of bellows coupling manufacturers from around the world.
  2. Trade Shows and Exhibitions: Attend trade shows and exhibitions related to your industry. These events often host numerous suppliers and manufacturers showcasing their products, including bellows couplings. It provides an excellent opportunity to meet the suppliers in person, discuss your specific requirements, and evaluate the products firsthand.
  3. Industry Associations: Reach out to industry associations and organizations relevant to your field. They can often provide valuable recommendations and a list of reputable suppliers who cater to your machinery needs.
  4. Referrals and Recommendations: Seek referrals and recommendations from colleagues, business partners, or other professionals in your industry who have experience with bellows couplings. Their insights can help you find trustworthy suppliers.
  5. Online Research: Conduct thorough online research to identify manufacturers with a strong reputation, positive reviews, and a history of delivering quality products. Check their websites, customer testimonials, and ratings on review platforms.
  6. Supplier Directories: Some industries have specific supplier directories or databases that provide information about verified suppliers and manufacturers. Consult these directories to find suitable bellows coupling suppliers.

When evaluating potential suppliers, consider factors such as product quality, pricing, lead times, customer support, and the ability to customize products to meet your machinery’s specific requirements. It’s also essential to request samples, product catalogs, and quotes from multiple suppliers to make an informed decision.

Always choose a supplier with a track record of delivering high-quality bellows couplings and excellent customer service to ensure a successful partnership for your machinery needs.

China manufacturer Grc-16X27 Aluminum Alloy Bellows Clamping Coupling  China manufacturer Grc-16X27 Aluminum Alloy Bellows Clamping Coupling
editor by CX 2024-04-26