Product Description
L099 flexible jaw coupling
AVAILABLE SIZES: 35, 50, 70, 75, 90, 95, 99, 100, 110, 150, 190, 225
L100 Lovejoy L coupling ,L COUPLING ,L TYPE FLEXIBLE JAW COUPLING
1. Material :Cast iron GG25
2. Good stability
3. Easy to maintain
4.OEM
L coupling have below advantage :
1. It is easy to maintain ,no need the tool can install
2. Can undertake high torque
3. Have the good buffer .
Features:
Economical and practical using
Easy pulling out
Simple construction and light weight
NBR rubber with excellent resistance to oil and drugs
Minimum space
No lubrication
L coupling parameters and data :
| Coupling type | Rated torque | HP-100PRM | |||||||
| In-Lbs. | Horsepower Capacity at Varying Speed(RPM) | Max Bore | |||||||
| Rubber | Hytrel | Rubber | Hytrel | 300 | 1200 | 1800 | 3600 | ||
| L-035 | 3.5 | 0.0056 | 0.017 | 0.067 | 0.1 | 0.2 | 3/8 | ||
| L-050 | 25.2 | 0.04 | 0.12 | 0.48 | 0.72 | 1.44 | 5/8 | ||
| L-070 | 37.8 | 0.06 | 0.18 | 0.72 | 1.08 | 2.16 | 3/4 | ||
| L-075 | 75.6 | 0.12 | 0.36 | 1.44 | 2.16 | 4.32 | 7/8 | ||
| L-090 | 126 | 0.2 | 0.6 | 2.4 | 3.6 | 7.2 | 7/8 | ||
| L-095 | 176 | 0.28 | 0.84 | 3.36 | 5.04 | 10.8 | 1-1/8 | ||
| L-099 | 265 | 0.42 | 1.26 | 5.04 | 7.56 | 15.1 | 1-3/16 | ||
| L-100 | 278 | 0.6 | 1.8 | 7.2 | 10.8 | 21.6 | 1-3/8 | ||
| L-110 | 693 | 2079 | 1.1 | 3.3 | 3.3 | 13.2 | 19.8 | 39.6 | 1-5/8 |
| L-150 | 1071 | 3213 | 1.7 | 5.1 | 5.1 | 20.4 | 30.6 | 61.2 | 1-7/8 |
Electrical Insulation in Jaw Couplings
Jaw couplings are designed to provide mechanical connection between two shafts while also maintaining electrical insulation. This feature is essential in applications where the connected shafts have different electrical potentials or where electrical isolation is required to prevent current flow between the shafts.
The electrical insulation in jaw couplings is primarily achieved through the use of non-conductive materials for the jaw components. The jaws of the coupling are typically made from materials such as elastomers or plastics, which are excellent electrical insulators. These non-conductive materials prevent electrical conduction between the two shafts, even if they are made from different conductive materials.
Additionally, the design of the jaw coupling ensures that the two shafts do not come into direct electrical contact with each other. The jaws of the coupling create a gap between the shafts, which further enhances the electrical insulation.
It’s important to note that while jaw couplings provide electrical insulation, their primary function is to transmit torque and accommodate misalignment between shafts. If specific electrical insulation requirements are critical for an application, additional measures such as insulating sleeves or shaft grounding may be necessary in conjunction with the jaw coupling.
Overall, jaw couplings are a reliable and widely used choice for mechanical power transmission while ensuring electrical isolation between connected shafts.
How does a jaw coupling help in power transmission efficiency?
A jaw coupling plays a significant role in enhancing power transmission efficiency in mechanical systems. It achieves this by incorporating several design features that minimize energy losses and maximize the transfer of power from one shaft to another. Here are some ways in which a jaw coupling helps improve power transmission efficiency:
- Mechanical Flexibility: Jaw couplings utilize a flexible elastomer spider as the connecting element between the two shafts. This elastomer spider allows for a certain degree of angular and parallel misalignment between the shafts without imposing significant additional loads on the connected equipment. The mechanical flexibility of the elastomer helps reduce the generation of excess heat and vibration, thereby optimizing power transmission efficiency.
- Vibration Damping: The elastomer spider in a jaw coupling also acts as a vibration-damping element. It absorbs and dissipates vibrations generated during the operation of rotating machinery. By dampening vibrations, the coupling reduces energy losses due to mechanical oscillations, which can otherwise decrease the overall power transmission efficiency.
- Shock Absorption: In addition to damping vibrations, jaw couplings can handle sudden shocks and impacts that may occur during equipment operation. The elastomer spider’s ability to absorb shocks prevents sudden force spikes from propagating through the system and helps maintain steady power transmission, thus improving overall efficiency.
- Reduced Friction: The design of jaw couplings minimizes sliding friction between the shafts and the coupling components. This reduced frictional resistance results in lower energy losses and less heat generation during power transmission, contributing to higher efficiency in the system.
- Torsional Wind-Up Compensation: When torque is transmitted through the shafts, there can be some degree of torsional wind-up or twist in the coupling. Jaw couplings can compensate for this torsional movement, ensuring that the transmitted power reaches the intended equipment without significant losses due to torsional deformation.
- Simple and Robust Design: Jaw couplings have a simple construction, typically consisting of two hubs and an elastomer spider. This straightforward design reduces the number of moving parts and potential points of failure, resulting in a robust and reliable coupling. A reliable coupling minimizes the risk of power losses due to mechanical inefficiencies or breakdowns, thus improving overall power transmission efficiency.
In summary, a jaw coupling enhances power transmission efficiency by providing mechanical flexibility, vibration damping, shock absorption, reduced friction, and torsional wind-up compensation. Its simple and robust design further contributes to reliable power transmission. When selecting a jaw coupling for a specific application, it is essential to consider factors such as torque requirements, operating conditions, and misalignment compensation to ensure optimal efficiency and performance in the system.
Maintenance Requirements for Jaw Couplings
Jaw couplings are relatively low-maintenance components, but regular inspections and preventive measures can help ensure their optimal performance and longevity. Here are the maintenance requirements for jaw couplings:
- Visual Inspections: Regularly inspect the jaw coupling for signs of wear, damage, or misalignment. Look for cracks, chips, or deformation in the elastomeric spider, hubs, and other components.
- Lubrication: Some jaw couplings require periodic lubrication of the elastomeric spider to prevent dry rot and ensure flexibility. Refer to the manufacturer’s guidelines for the appropriate lubrication schedule and type.
- Tighten Fasteners: Check and tighten all fasteners, including set screws, regularly to prevent coupling slippage and maintain a secure connection between the shafts and hubs.
- Alignment: Ensure that the shafts connected by the jaw coupling are properly aligned. Excessive misalignment can lead to premature wear and failure of the elastomeric spider.
- Replace Worn Parts: If any component of the jaw coupling shows signs of wear beyond acceptable limits, promptly replace it to avoid further damage and potential system failure.
- Operating Conditions: Monitor the operating conditions of the machinery to prevent overheating or overloading, which can affect the performance and life of the coupling.
Following these maintenance practices can extend the life of the jaw coupling, reduce the risk of unexpected failures, and contribute to the overall reliability of the mechanical system.
editor by CX 2023-08-30