China manufacturer OEM 26117511454 1220843 for BMW Flex Disc Joint Drive Shaft Coupling

Product Description




Product Description

OEM 2611125718 26111227420 Parts Name Drive shaft Coupling
Diameter 96mm Trademark YTK or Customized
Raw Material Rubber & Steel Transport Packing Neutral Packing & Customized
Exportation ZheJiang Port Bearing Quality ZV3 Level
Warranty One Year Product Customized Available
HS Code


Delivery Time 7-30 days
Origin XingTai China Minimum 2 Φ30 CB   Φ35   Φ40 3535730 Φ60
Φ60 Φ60 6 Φ65









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drive coupling

Explaining the Concept of Backlash and How It Affects Drive Coupling Performance

Backlash is a mechanical phenomenon that refers to the amount of free movement or play between the mating components of a drive system. In the context of drive couplings, backlash is the angular or linear displacement that occurs when there is a change in direction or a reversal of motion. It is mainly a result of clearances between the coupling’s mating elements.

The presence of backlash can have both positive and negative effects on drive coupling performance:

  • Negative Effects of Backlash:
    • Reduced Accuracy: Backlash can introduce inaccuracies in position control systems, especially in applications requiring precise positioning. The free movement between the coupling elements can result in a delay in response when the direction of rotation changes, leading to positioning errors.
    • Vibration and Noise: Backlash can cause vibration and noise during operation, especially in systems with frequent changes in direction or load. The impact and collision of the mating elements can generate noise and contribute to mechanical wear.
    • Increased Wear: In systems with significant backlash, the constant impact between the mating components can accelerate wear and reduce the lifespan of the coupling and other connected machinery.
  • Positive Effects of Backlash:
    • Shock Absorption: In certain applications, a controlled amount of backlash can act as a shock absorber, dampening sudden impact loads and reducing stress on the system during abrupt changes in motion.
    • Misalignment Compensation: Backlash can compensate for minor misalignments between shafts, reducing the risk of damage and excessive load on the coupling and connected components.
    • Thermal Expansion Compensation: Backlash can help accommodate thermal expansion and contraction of the components, allowing the coupling to function effectively even as the temperature changes.

The appropriate amount of backlash depends on the specific application and the coupling type. In some cases, minimizing backlash is essential for precision and accuracy, while in others, a controlled amount of backlash can be beneficial for shock absorption and misalignment compensation.

It’s crucial to consider the effects of backlash when selecting a drive coupling and designing a power transmission system. Manufacturers often provide information on the level of backlash in their coupling designs, enabling users to make informed decisions based on their application’s requirements.

drive coupling

Understanding the Torsional Stiffness and Damping Characteristics of Drive Couplings

Torsional stiffness and damping are essential characteristics of drive couplings that play a significant role in the performance and behavior of mechanical power transmission systems. Let’s explore these two properties:

Torsional Stiffness:

Torsional stiffness refers to the ability of a drive coupling to resist angular deflection or twisting when subjected to a torque load. It is a measure of the coupling’s rigidity and is typically represented by a spring constant. A coupling with high torsional stiffness will exhibit minimal angular deflection when torque is applied, providing a more direct transfer of rotational power. On the other hand, a coupling with lower torsional stiffness allows for some flexibility and misalignment tolerance.

Drive couplings with high torsional stiffness are commonly used in applications where precision and accurate torque transmission are crucial, such as precision machinery and high-speed power transmission systems. Couplings with lower torsional stiffness are employed in situations where flexibility and shock absorption are needed to protect connected components from sudden torque spikes and vibrations.

Torsional Damping:

Torsional damping characterizes the ability of a drive coupling to dissipate energy in the form of heat when subjected to torsional vibrations. Damping reduces the amplitude of vibrations and prevents resonance, which can be detrimental to the coupling and the entire power transmission system.

Drive couplings with adequate torsional damping can absorb and dampen torsional vibrations, preventing excessive wear on the coupling and the connected machinery. The damping capacity of the coupling is determined by its material properties and design. High torsional damping is especially important in applications where the drive system experiences varying torque loads and vibrations, as it helps maintain stability and extends the life of the coupling and other mechanical components.

Both torsional stiffness and damping are critical factors to consider when selecting a drive coupling for a specific application. The appropriate coupling choice will depend on the desired level of rigidity, flexibility, and vibration absorption required for the mechanical power transmission system.

drive coupling

What is a Drive Coupling and its Role in Mechanical Power Transmission?

A drive coupling is a mechanical device used to connect two shafts in a power transmission system. Its primary role is to transmit torque from one shaft to another while accommodating misalignments and absorbing shocks and vibrations. Drive couplings play a crucial role in transferring mechanical power efficiently and reliably between rotating components in various industrial applications.

The key features and functions of drive couplings include:

  • Power Transmission: Drive couplings are designed to transmit mechanical power from the driving shaft to the driven shaft. As the driving shaft rotates, the coupling transfers the torque to the driven shaft, causing it to rotate and perform the intended task, such as driving a pump, conveyor, or generator.
  • Misalignment Compensation: In real-world applications, shafts may not be perfectly aligned due to factors such as assembly tolerances, thermal expansion, or equipment settling. Drive couplings can accommodate angular, parallel, and axial misalignments between the shafts, ensuring smooth power transmission even under misaligned conditions. This capability helps to reduce stress on connected machinery and enhances overall system reliability.
  • Shock and Vibration Damping: During operation, rotating equipment often experiences shocks and vibrations that can be harmful to the machinery and reduce its lifespan. Drive couplings with elastomeric or flexible elements can dampen these shocks and vibrations, providing a smoother power transmission and protecting the connected equipment from excessive loads.
  • Overload Protection: In some applications, sudden torque spikes or overloads may occur due to process changes or unforeseen events. Drive couplings equipped with torque-limiting features can protect the machinery from damage by disengaging or slipping when the torque exceeds a predetermined threshold.
  • Reduced Maintenance: Drive couplings that require minimal maintenance contribute to the overall efficiency of the power transmission system. By reducing the need for frequent maintenance and lubrication, downtime is minimized, leading to increased productivity and cost savings.
  • Compact and Versatile Design: Drive couplings are available in various designs and sizes to accommodate different application requirements. Their compact and versatile design makes them suitable for a wide range of industries and machinery types, from small motors in automotive systems to large industrial drives in mining and manufacturing processes.

Overall, drive couplings are essential components in mechanical power transmission systems. Their ability to efficiently transfer torque while compensating for misalignments and absorbing shocks ensures reliable and long-lasting operation of rotating equipment in various industries.

China manufacturer OEM 26117511454 1220843 for BMW Flex Disc Joint Drive Shaft Coupling  China manufacturer OEM 26117511454 1220843 for BMW Flex Disc Joint Drive Shaft Coupling
editor by CX 2024-05-16


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