Product Description

Description:

Rock drilling tools: Adapter Coupling, Cross-over Adapter Coupling, coupling sleeves

  • Used when changing from 1 thread type, or size, to another and are typically required only in special circumstances
  • Crossover adapter ( MF adapter coupling ),  T38F/ R38M-260
  • Coupling sleeves:  Crossover adapter ( MF adapter coupling ), T45F/T38M-260.

Coupling sleeves, other name is Coupling, when using rock drills with male shank adapters and a conventional drifter rod, a coupling is required to join the adapter to the rod,ensuring the ends touch for efficient energy transmission. Couplings are also used to connect several rods to each other in the same way. Couplings have a middle stop to prevent over-threading on to the drill rod. We can manufactures semi-bridge, full bridge coupling sleeves for the percussive tools. 

 

Product Name:

coupling sleeve

Description:

coupling sleeve

use to connect several rods to each other

Material:

Alloy steel bar

MOQ:

5pcs

Type

full-bridge, semi-bridge,same diameter etc

Thread type

R22,R25,R28,R32,R38,T38,T45,T51

Diameter

33mm-76mm

Length

140mm-250mm

Color

Gold, Red

 

 

Main Products:

 

1-12 inch middle-low/high air pressure DTH hammers & bits
Big hole high air pressure DTH hammer using in water well, oil, gas and construction drilling 
Eccentric overburden drilling Equipment 
Hole opener bit 
Rock thread bit (R22, R25, R28, R32, R35, R38, T38, T45,T51, ST58,GT60)

 

Extension Rod, M/F Rod, M/m Rod, Drift Rod,
Shank adapter, coupling sleeves and all kinds of adapters 
Advantages:

 

Compared with the oversea brands, our advantages are bellowing:

 

a. Our products can match over 95% against the original products

 

b. Price are competitive against the famous brands and best quality against the small factory 

 

About Us:

 

1.    Our factory has been specialized in manufacturing drilling tools and spare parts for over 10 years.

 

2.    We have advanced technology and equipment.

 

3.    Our technician has more than 13 year’s professional working experience.

 

4.    Rock drilling tools are exported throughout the world. Main market: Norway, Turkey, USA, Canada, Australia, Brazil, Uruguay, Iran, Philippines, Thailand, India, etc.

 

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sleeve coupling

How do Sleeve Couplings Contribute to Reducing Vibrations and Noise in Rotating Equipment?

Sleeve couplings play a significant role in reducing vibrations and noise in rotating equipment. Their design and material properties contribute to damping vibrations and absorbing shocks, resulting in smoother and quieter operation. Here’s how sleeve couplings achieve this:

1. Flexibility and Misalignment Compensation:

Sleeve couplings have a certain degree of flexibility, which allows them to accommodate small misalignments between the connected shafts. When the shafts are misaligned, the sleeve coupling can flex and adjust, reducing the transmission of vibrations from one shaft to the other. By compensating for misalignments, sleeve couplings minimize the generation of vibrations and the resulting noise.

2. Shock Absorption:

During sudden starts, stops, or changes in load, rotating equipment can experience shocks and impact loads. Sleeve couplings have some level of shock absorption capability, which helps dampen the effects of these shocks. By absorbing shocks, sleeve couplings prevent the transmission of high-frequency vibrations and noise to the rest of the system, resulting in a quieter operation.

3. Resilient Material Selection:

The choice of materials used in sleeve couplings also contributes to vibration and noise reduction. Certain materials, such as rubber or elastomers, are known for their damping properties. These materials can be incorporated into the design of sleeve couplings to absorb and dissipate vibrations, effectively reducing noise levels in the system.

4. Uniform Torque Transmission:

Sleeve couplings provide uniform torque transmission between the connected shafts. This balanced torque transmission minimizes torsional vibrations, which can lead to noise generation in the system. By maintaining a smooth torque transfer, sleeve couplings help achieve quieter and more stable operation.

5. Proper Installation and Maintenance:

Proper installation and regular maintenance of sleeve couplings are essential for their optimal performance in reducing vibrations and noise. Ensuring that the coupling is correctly aligned and well-lubricated can further enhance its ability to dampen vibrations and minimize noise levels.

In summary, sleeve couplings contribute to reducing vibrations and noise in rotating equipment by providing flexibility to accommodate misalignments, absorbing shocks, using resilient materials, and ensuring uniform torque transmission. Their ability to mitigate vibrations and noise enhances the overall performance and reliability of the rotating equipment, making them a preferred choice in various industrial applications.

sleeve coupling

How do Sleeve Couplings Ensure Proper Torque Transmission and Minimize Power Loss?

Sleeve couplings ensure proper torque transmission and minimize power loss through their simple yet effective design. The key features that enable this are:

  • Frictional Grip: Sleeve couplings utilize frictional grip between the inner and outer sleeves to transmit torque. When the coupling is tightened around the shafts, the frictional forces ensure a solid connection, allowing torque to be efficiently transferred from one shaft to the other.
  • Tight Fit: Sleeve couplings are designed to have a tight fit around the shafts they connect. This close fit minimizes play or backlash, ensuring that the torque is transmitted accurately without any rotational lag.
  • Material Selection: The material used in the construction of sleeve couplings is chosen to optimize torque transmission and minimize power loss. Commonly used materials like steel or aluminum have excellent mechanical properties, providing high strength and rigidity, which contribute to efficient torque transfer.
  • Non-Slipping Design: The non-slipping design of sleeve couplings prevents relative movement between the shaft and the coupling during operation. This design feature ensures that the torque applied to one end of the coupling is instantaneously transferred to the other end without any energy loss due to slippage.
  • Torsional Flexibility: Sleeve couplings offer some degree of torsional flexibility, allowing them to accommodate small misalignments and angular deflections between the shafts. This flexibility helps prevent stress concentration and mechanical wear, further minimizing power losses.
  • Efficient Contact Area: The contact area between the shaft and the inner bore of the sleeve is maximized, providing an efficient torque transfer path. This ensures that the coupling can handle the rated torque without causing excessive stress on the shafts or coupling itself.

By combining these design features, sleeve couplings offer a reliable and efficient means of torque transmission. The absence of complex moving parts in sleeve couplings reduces friction and mechanical losses, resulting in minimal power loss during operation. Additionally, their simple design and ease of installation contribute to their overall efficiency and effectiveness in various mechanical power transmission applications.

sleeve coupling

How do Sleeve Couplings Handle Misalignment and Shaft Movement during Operation?

Sleeve couplings are designed to accommodate minor misalignments and shaft movement, making them flexible and versatile in various applications. Here’s how sleeve couplings handle misalignment and shaft movement during operation:

Misalignment Compensation:

When two shafts are connected by a sleeve coupling, perfect alignment is challenging to achieve, especially in dynamic systems subject to vibrations or thermal expansion. Sleeve couplings are forgiving in this aspect and can tolerate slight angular and axial misalignments between the shafts.

The sleeve coupling’s cylindrical shape allows it to bend slightly when subjected to misaligned forces. As a result, the coupling can flex and adjust to accommodate the angular and axial misalignments without causing excessive stress on the connected machinery.

Shaft Movement:

During operation, shafts in a motion control system may experience movement due to factors such as thermal expansion, vibrations, or changing loads. Sleeve couplings are inherently flexible, which enables them to cope with the movement of the connected shafts.

If one or both shafts move laterally or axially, the sleeve coupling can flex and elongate slightly to follow the movement without causing damage or disconnection. This flexibility ensures that the torque transmission remains smooth and uninterrupted, even when the shafts undergo changes in position or length.

It is essential to note that sleeve couplings have limitations in their misalignment compensation capabilities. They are best suited for applications with relatively small misalignments and moderate torque requirements. If the misalignment is excessive or the system demands precise shaft alignment, alternative coupling types with specific misalignment compensation features may be more appropriate.

Advantages of Misalignment Compensation:

The ability of sleeve couplings to handle misalignment and shaft movement offers several advantages:

  • Reduced Stress on Equipment: By accommodating misalignment, sleeve couplings reduce the stress transferred to connected machinery and prevent premature wear or damage to the components.
  • Vibration Damping: The flexible nature of sleeve couplings helps dampen vibrations caused by misalignment or external factors, leading to smoother operation and increased equipment lifespan.
  • Less Maintenance: Properly installed sleeve couplings with misalignment compensation can result in reduced maintenance requirements, as they can tolerate minor shifts in the shafts without compromising performance.
  • Cost-Effectiveness: Sleeve couplings offer a cost-effective solution for motion control systems that have acceptable levels of misalignment. Their simple design and materials make them economical for a wide range of applications.

In summary, sleeve couplings provide a reliable and economical solution for power transmission in motion control systems. Their ability to handle misalignment and shaft movement makes them suitable for various industrial applications where precise shaft alignment is not critical. However, it is essential to consider the specific requirements of the application and evaluate the level of misalignment before selecting sleeve couplings for optimal performance and longevity.

China best Bit Adapter Coupling T38-R38 Mf Coupling Sleeves  China best Bit Adapter Coupling T38-R38 Mf Coupling Sleeves
editor by CX 2024-02-10