Product Description

GB 8 Fonts Encoder-specific Series coupling Special aluminium alloy coupling for encoder


Description of
 GB 8 Fonts Encoder-specific Series coupling Special aluminium alloy coupling
>Designed for encoder
>Good flexibility, not easy to break
>The elastomer is made of polyurethane, resistant to oil and oxidation

Dimensions of GB 8 Fonts Encoder-specific Series coupling Special aluminium alloy coupling

  

model parameter common bore diameter d1,d2 ΦD L LP S F M tightening screw torque
(N.M)
GB-15X24 3,4,5,6,6.35,7,8 15 24 20 1.8 2.5 M3 0.7
GB-15×32 3,4,5,6,6.35,7,8 15 32 20 1.8 2.5 M3 0.7
GB-18×28 4,5,6,6.35,7,8,9,10 18 28 25 1.8 3.1 M4 1.7
GB-18×38 4,5,6,6.35,7,8,9,10 18 38 25 1.8 3.1 M4 1.7

model parameter Rated torque
(N.M)*
allowable eccentricity
(mm)*
allowable deflection angle
(°)*
allowable axial deviation
(mm)*
maximum speed
rpm
static torsional stiffness
(N.M/rad)
moment of inertia
(Kg.M2)
Material of shaft sleeve Material of shrapnel surface treatment weight
(g)
GB-15X24 0.5 1 2 + 2-5 8000 15 4.5×10-4 High strength aluminum alloy PU

 

Anodizing treatment

8
GB-15X32 0.5 1 2 + 2-5 8000 15 4.5×10-4 8
GB-18X28 0.8 1 3 + 2-5 6000 20 5.6×10-4 13
GB-18X38 0.8 1 3 + 2-5 6000 20 5.6×10-4 13

 

shaft coupling

Diagnosing Potential Issues in Encoder Couplings

Identifying potential issues in encoder couplings is crucial for maintaining optimal performance. Some signs to watch for and diagnostic steps include:

1. Signal Inaccuracies: Inaccurate position or velocity feedback signals may indicate coupling misalignment. Use diagnostic tools to compare expected and actual readings.

2. Increased Noise: Unusual vibrations or noise during operation can indicate misalignment or wear. Perform vibration analysis or inspect the coupling for visual damage.

3. Signal Dropouts: Intermittent signal loss or dropouts can be due to poor coupling engagement or damaged wiring. Check wiring connections and the coupling’s mechanical integrity.

4. Drifting Position: If the controlled system’s position drifts over time, it could suggest issues in the encoder coupling’s precision. Monitor position deviations and inspect the coupling for wear.

5. Excessive Heating: Overheating of the coupling may point to misalignment or excessive friction. Monitor the temperature and ensure proper coupling lubrication.

6. Irregular Movement: Unexpected jerks or irregular motion can indicate binding or sticking in the coupling. Inspect the coupling’s components for damage or obstruction.

7. Reduced Accuracy: Decreased accuracy in positioning or velocity control might be due to backlash or wear. Measure and compare desired and achieved positions for accuracy assessment.

8. Excessive Wear: Visual inspection of the coupling’s components for signs of wear, such as cracked or deformed elements, can help detect potential issues early.

9. Misalignment: Misalignment between the encoder and the shaft can lead to signal discrepancies. Use precision measurement tools to assess alignment and adjust if necessary.

10. Visual Inspection: Regularly inspect the coupling for signs of corrosion, rust, or physical damage. Address any issues promptly to prevent further deterioration.

Performing routine maintenance, using diagnostic tools, and monitoring the system’s performance can help identify and address potential issues in encoder couplings, ensuring consistent and accurate motion control.

shaft coupling

Impact of Encoder Resolution on Choice of Coupling

The encoder resolution plays a crucial role in selecting an appropriate coupling for your system. Encoder resolution refers to the number of distinct positions a rotary encoder can detect in one full rotation. Here’s how encoder resolution impacts the choice of coupling:

1. Precision Requirements:

Higher encoder resolutions provide finer position accuracy. If your application demands high precision and accuracy, such as in robotics or CNC machines, a coupling that minimizes backlash and offers precise torque transmission is essential.

2. Backlash Sensitivity:

As encoder resolution increases, the system becomes more sensitive to backlash (play between coupling components). To mitigate this, a coupling with minimal backlash, such as a zero-backlash or low-backlash coupling, is recommended to ensure accurate position feedback.

3. Dynamic Response:

Higher encoder resolutions allow systems to detect even small movements, improving dynamic response. For applications requiring rapid and accurate positioning changes, a coupling that provides high torsional stiffness and low wind-up is beneficial.

4. Mechanical Compliance:

Low-resolution encoders may tolerate some misalignment due to their coarser feedback intervals. However, high-resolution encoders are more sensitive to misalignment, making it important to choose a coupling that accommodates misalignment while maintaining signal accuracy.

5. Coupling Selection:

For high-resolution encoders, consider couplings that provide precision, low backlash, and accurate torque transmission, such as beam couplings, bellows couplings, or Oldham couplings. These couplings help maintain the integrity of position feedback and optimize system performance.

6. Environmental Factors:

The operating environment can affect the choice of coupling. For applications with extreme conditions, such as temperature fluctuations or aggressive chemicals, select a coupling material that can withstand these conditions without compromising the encoder’s accuracy.

Ultimately, the encoder resolution influences the coupling choice by demanding a coupling that complements the precision, accuracy, and dynamic performance required by the application.

shaft coupling

Types of Encoder Couplings Tailored for Specific Applications

Encoder couplings come in various types, each tailored to suit specific applications and requirements:

1. Beam Couplings: These couplings use flexible beams to transmit motion and accommodate misalignments. They are ideal for applications requiring high precision and low backlash.

2. Bellows Couplings: Bellows couplings have accordion-like bellows that provide high torsional stiffness while allowing axial and angular misalignment compensation. They are commonly used in vacuum environments.

3. Oldham Couplings: Oldham couplings use a three-piece design to transmit motion. They provide high misalignment capacity while maintaining accurate motion transmission.

4. Disc Couplings: Disc couplings consist of thin metal discs that provide torsional stiffness and minimal backlash. They are suitable for high-speed and high-torque applications.

5. Flexible Shaft Couplings: These couplings use a flexible element, such as elastomer or rubber, to accommodate misalignments and dampen vibrations. They are versatile and used in various industries.

6. Miniature Couplings: Designed for small-scale applications, miniature couplings provide precise motion control in compact spaces, such as robotics and medical devices.

7. High-Torque Couplings: These couplings are built to handle high torque loads, making them suitable for heavy-duty industrial applications.

8. Magnetic Couplings: Magnetic couplings use magnets to transmit motion without physical contact. They are used in applications requiring hermetic sealing or where avoiding direct contact is necessary.

9. Encoder-Integrated Couplings: Some couplings come with built-in encoders for direct position sensing. These are convenient for applications where space is limited or where separate encoders are not practical.

10. Shaft Locking Mechanisms: Some couplings feature mechanisms that lock the shafts in place, providing additional security against shaft slippage.

The choice of encoder coupling type depends on factors like the level of misalignment, torque requirements, speed, space limitations, and specific application needs.

China factory Special Aluminium Alloy Coupling for Encoder GB-18X38  China factory Special Aluminium Alloy Coupling for Encoder GB-18X38
editor by CX 2023-10-10