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



shaft coupling

Comparison of Encoder Couplings with Other Coupling Types

When comparing encoder couplings with other coupling types, such as flexible couplings and magnetic couplings, several key factors come into play:

1. Flexibility: Encoder couplings, like flexible couplings, offer flexibility to accommodate misalignment between the encoder and the driven component. They provide angular, radial, and axial flexibility, ensuring efficient signal transmission while minimizing stress on components.

2. Signal Transmission: Encoder couplings are specifically designed to ensure accurate signal transmission between the encoder and the controlled system. This distinguishes them from other couplings that prioritize torque transmission, such as magnetic couplings used for sealing applications.

3. Backlash Reduction: Encoder couplings often prioritize low backlash to enhance the precision and accuracy of motion control systems. While some other coupling types also aim to minimize backlash, encoder couplings excel in this aspect due to their primary function of accurate signal transmission.

4. Magnetic Couplings: Magnetic couplings are commonly used for torque transmission across a sealed barrier, such as in pump applications. While they offer the advantage of hermetic sealing, they may not be as suitable for precise signal transmission as encoder couplings. Magnetic couplings can also introduce a certain amount of backlash due to their design.

5. Torque Capacity: Flexible couplings and some other types of couplings are often selected based on their torque capacity to transmit power between shafts. Encoder couplings, on the other hand, prioritize signal integrity and precision, making them ideal for applications where accurate motion control is essential.

6. Application Focus: Encoder couplings are specialized for motion control and automation systems that require precise positioning and accurate signal feedback. Other coupling types may have broader applications, including torque transmission, vibration dampening, and sealing.

7. Maintenance: Encoder couplings, like flexible couplings, require periodic inspection and maintenance to ensure proper functioning and accuracy. Magnetic couplings may have different maintenance requirements due to their sealing properties.

Overall, encoder couplings stand out in their ability to facilitate accurate signal transmission and precise motion control. While other coupling types have their own advantages and applications, encoder couplings are specifically tailored to meet the demands of motion control and automation systems where maintaining signal accuracy is paramount.

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

Role of Encoder Couplings in Motion Control and Automation

An encoder coupling is a crucial component in motion control and automation systems, used to facilitate precise position and speed sensing:

It connects the shafts of a motor and an encoder, allowing the accurate transmission of rotational motion while maintaining precise alignment. The primary functions and usage of an encoder coupling include:

  • Rotational Precision: Encoder couplings ensure that the rotational motion of the motor shaft is accurately transmitted to the encoder, preserving the exact position and speed information.
  • Misalignment Compensation: They can accommodate slight misalignments between the motor and the encoder shafts, which can occur due to manufacturing tolerances or shaft deflection during operation.
  • Torsional Stiffness: Encoder couplings maintain torsional stiffness to ensure minimal torsional deformation during motion, preventing signal inaccuracies and maintaining synchronization.
  • Signal Integrity: Maintaining precise alignment helps preserve the integrity of the electrical signals generated by the encoder, ensuring accurate position and speed measurements.
  • Reduced Wear: By minimizing misalignment and torsional stress, encoder couplings help reduce wear and extend the lifespan of both the motor and the encoder.

Overall, encoder couplings are essential for achieving accurate motion control and automation, enabling precise positioning and speed control in various applications such as robotics, CNC machines, conveyor systems, and more.

China Good quality Metal Lengthened Rigid Couplings Encoder Coupling  China Good quality Metal Lengthened Rigid Couplings Encoder Coupling
editor by CX 2023-11-07