China Good quality Metal Lengthened Rigid Couplings Encoder Coupling

Product Description

Metal Lengthened Rigid Couplings Encoder Coupling

Description of Metal Lengthened Rigid Couplings Encoder Coupling

1. Low Inertia, high sensitivity

2. High Rigid Torque

3. Zero Rotary Clearance

4. High Oil Resistance, high chemical resistance

5. No need of Maintenance, low cost

6. Suitable for shaft support and push-pull applications


Parameter of Metal Lengthened Rigid Couplings Encoder Coupling

Item Bore size D L L1/L2 E F F1 G M Tightening
d1 d2
min. max. min. max.
RC16 4 6 4 6 16 16 3.8 M3 0.7
RC16C 5 6 5 6 16 7.5 0.6 3.8 2*M2.5 1
RC20 5 10 5 10 20 30 7 M3 0.7
RC20C 5 8 5 8 30 14.7 0.6 3.8 4*M3 1
RC25 6 12 5 12 25 40 9 M4 1.7
RC25C 6 10 5 10 40 19.5 1 5 4*M4 1.5
RC30 8 16 6 16 32 44 10 M4 1.7
RC30C 8 10 6 10 44 21 1.2 5.5 4*M4 2.5
RC40 10 24 10 24 43 50 12 M6 7
RC40C 10 22 10 22 50 24.2 1.5 6.5 4*M5 4


Item Rated
Moment of
Net weight
RC16 0.3 0.6 20000 0.4 11
RC16C 0.3 0.6 18000 0.3 9
RC20 0.5 1 20000 1.3 20
RC20C 0.5 1 16000 0.9 15
RCL20C 0.5 1 14000 0.9 18
RC25 1 2 20000 3.9 39
RC25C 1 2 16000 2.7 29
RCL25C 1 2 12000 3.4 38
RC30 2 4 19000 12 71
RC30C 2 4 14000 7.1 51
RCL30C 2 4 10000 10 70
RC40 4.5 9 12000 46 170
RC40C 4.5 9 10000 34 130
RCL40C 5 10 8000 42 160

Order example

Item type Outer dia. clamp screw d1 d2
RC 43 C 18 22



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shaft coupling

Materials Used in Manufacturing Encoder Couplings

Encoder couplings are manufactured using a variety of materials, each chosen for its specific properties and suitability for the intended application. Commonly used materials include:

1. Aluminum: Aluminum is lightweight, corrosion-resistant, and offers good machinability. It is often used for encoder couplings in applications where weight reduction and moderate torque transmission are important.

2. Stainless Steel: Stainless steel is known for its excellent corrosion resistance and durability. It is commonly used in environments where exposure to moisture, chemicals, or harsh conditions is a concern.

3. Steel: Steel is robust and offers high strength, making it suitable for heavy-duty applications with higher torque requirements. It can be further treated for enhanced corrosion resistance.

4. Brass: Brass provides good corrosion resistance and electrical conductivity. It is often used in applications where electrical isolation between components is necessary.

5. Plastics: Various engineering plastics such as nylon, polyurethane, and PEEK (polyether ether ketone) are used in encoder couplings. These materials offer good wear resistance, low friction, and electrical insulation.

6. Carbon Fiber: Carbon fiber is a lightweight, high-strength material known for its exceptional stiffness-to-weight ratio. It is used in applications where minimizing weight while maintaining rigidity is crucial.

7. Composite Materials: Composite materials combine different materials to achieve specific properties. They can offer a combination of strength, rigidity, and lightweight characteristics.

The choice of material depends on factors such as the application’s requirements, environmental conditions, torque and speed specifications, and the need for electrical insulation or conductivity. When selecting the material for an encoder coupling, it’s essential to consider the mechanical, thermal, and chemical properties required for optimal performance and longevity.

shaft coupling

Suitability of Encoder Couplings for Harsh Environments and Extreme Temperatures

Encoder couplings can be designed and selected to withstand a wide range of environmental conditions, making them suitable for applications in harsh environments and extreme temperatures. Here’s how encoder couplings exhibit their suitability:

  • Sealing and Encapsulation: Many encoder couplings are designed with effective sealing and encapsulation techniques that protect internal components from dust, moisture, and contaminants. This makes them suitable for outdoor or industrial environments where exposure to harsh elements is common.
  • Material Selection: Encoder couplings can be manufactured using materials that offer high resistance to corrosion, chemicals, and other environmental factors. This ensures their longevity and performance in challenging conditions.
  • Temperature Resistance: Some encoder couplings are specifically engineered to operate effectively across a wide temperature range, including extreme hot or cold environments. High-quality materials and precision manufacturing contribute to their temperature resistance.
  • IP Ratings: Ingress Protection (IP) ratings indicate the level of protection an encoder coupling offers against solid particles and liquids. Encoders with higher IP ratings are better suited for harsh environments as they provide enhanced sealing and protection.
  • Special Coatings: Certain encoder couplings can be coated with protective layers or finishes that provide additional resistance to harsh chemicals, oils, and other substances commonly encountered in industrial settings.
  • Vibration and Shock Resistance: Encoder couplings can be designed to withstand vibrations and shocks that might occur in heavy machinery or equipment. This ensures consistent performance even in environments with mechanical stress.
  • Customization: Manufacturers often offer customization options to tailor encoder couplings for specific environmental requirements. This includes features like extended shaft seals, special coatings, and additional protection measures.

Overall, encoder couplings can provide reliable signal transmission and precision in harsh environments or extreme temperatures when selected and installed appropriately.

shaft coupling

Challenges of Misalignment and How Encoder Couplings Address Them

Misalignment in mechanical systems occurs when the rotational axes of connected components are not perfectly aligned. This misalignment can lead to various issues, including reduced efficiency, increased wear, and even component failure. Encoder couplings play a crucial role in mitigating the challenges posed by misalignment. Here’s how they address these challenges:

1. Angular Misalignment: Encoder couplings can accommodate a certain degree of angular misalignment between the encoder and the driven component. They use flexible elements, such as elastomers or metal bellows, to allow for slight angular deviations without transmitting excessive stress to the connected components.

2. Radial Misalignment: Radial misalignment occurs when the axes of the encoder and the driven component are offset. Encoder couplings with flexible elements can absorb the radial displacement, preventing undue stress on the shafts and bearings. This helps extend the lifespan of the components and reduces the risk of premature failure.

3. Axial Misalignment: Axial misalignment refers to the axial offset between the encoder and the driven component. Encoder couplings with axial flexibility, such as certain types of beam or bellows couplings, can accommodate axial movement while maintaining effective signal transmission. This is particularly important in systems where thermal expansion or contraction may occur.

4. Vibration Damping: Misalignment can lead to vibrations that propagate through the system, affecting overall performance and accuracy. Encoder couplings with vibration-damping features help minimize the impact of these vibrations, ensuring smoother and more precise motion control.

5. Reduced Wear and Stress: Misalignment can increase wear and stress on shafts, bearings, and other components. Encoder couplings that effectively address misalignment help distribute loads more evenly, reducing wear and the likelihood of premature component failure.

6. Preserving Encoder Integrity: In systems with encoders, misalignment can compromise the accuracy of signal transmission, leading to measurement inaccuracies. Encoder couplings maintain the alignment necessary for accurate signal transmission, preserving the integrity of the encoder’s output.

Overall, encoder couplings provide the flexibility and compensation needed to accommodate misalignment while ensuring efficient and accurate signal transmission. By addressing misalignment challenges, these couplings contribute to the reliability, performance, and longevity of motion control and automation systems.

China Good quality Metal Lengthened Rigid Couplings Encoder Coupling  China Good quality Metal Lengthened Rigid Couplings Encoder Coupling
editor by CX 2024-01-15