Product Description
CHINAMFG Jaw couplings are designed as 3 piece comination, including 2 hubs and 1 elastomer made of polyurethane. The cuved jaw fits CHINAMFG the spider, which minimizes shock to the motor and other sensitive equipment.
Widely used in various mechanical and hydraulic fields
High precision in transmission and high rotating speed.
Suitable for wide range of environment, with the higest temperature 280 degree
Good elasticity, hight strength, corrosion resistant, wearable
No need to lubricate, quiet operation
Quick and easy mounting and disassembly
L035, L050, L070, L075, L090, L095, L099, LI00, L110, L150, L190, L225
| Specufucation | Type | Std.bore | Metric Bore | Inch Bore | A(mm) | B(mm) | D(mm) | E(mm) |
| L035 | 1 | 3 | 38 | 1/8-3/8″ | 16 | 20.5 | 6.6 | |
| L050 | 1 | 6 | 515 | 3/16-5/8″ | 28 | 43.2 | 15.6 | |
| L070 | 1 | 9 | 719 | 3/16-3/4″ | 35 | 50.8 | 19 | |
| L075 | 1 | 9 | 925 | 3/16-1″ | 45 | 54.7 | 21 | |
| L090 | 1 | 9 | 928 | 3/16-1 1/8″ | 54 | 54.7 | 21 | |
| L095 | 1 | 9 | 928 | 3/8-1 1/8″ | 54 | 63.5 | 25.5 | |
| L099 | 1 | 12 | 12-35 | 7/16-1 3/8″ | 64.5 | 72.5 | 27 | |
| L100 | 1 | 12 | 12-35 | 7/16-1 3/8″ | 64.5 | 88.5 | 35 | |
| L110 | 1 | 15 | 15-48 | 1/2-1 7/8″ | 85 | 108 | 43 | |
| L150 | 1 | 15 | 15-48 | 5/8-1 7/8″ | 96 | 115.4 | 45 | |
| L190 | 2 | 19 | 19-55 | 5/8-2 1/4″ | 115 | 133.4 | 54 | 101.6 |
| L225 | 2 | 19 | 19-65 | 3/4-2 5/8″ | 127 | 153.4 | 64 | 108 |
CHINAMFG Jaw coupling grooving type is backlash free, using screws after slotting to eliminate the clearance. This grooving type coupling is suitable for power transmission on main shaft, elevating platform and machine tool.
Material: Alluminum for size below 42
Steel for size over 42
Finish: Natural or Anodizing
Size Range: 19 to 75
Finished bore: according to ISO fit H7
Keyway width: according to DIN 6885/1
The Tolerance of keyway is Js9
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How do jaw couplings handle shaft misalignment in rotating equipment?
Jaw couplings are mechanical devices used in rotating equipment to connect two shafts and transmit torque. One of the key advantages of jaw couplings is their ability to handle shaft misalignment. Shaft misalignment can occur due to various reasons, including manufacturing tolerances, thermal expansion, foundation settling, or general wear and tear. Jaw couplings can accommodate misalignment in three primary ways:
- Angular Misalignment: Jaw couplings can handle small angular misalignments between the connected shafts. The flexible nature of the elastomer spider (the central element in the jaw coupling) allows for a certain degree of angular movement between the hubs without exerting excessive forces on the connected equipment.
- Parallel Misalignment: Parallel misalignment occurs when the two shafts are not perfectly aligned in a straight line. Jaw couplings can tolerate some amount of parallel misalignment due to the flexibility of the elastomer spider. This flexibility allows the hubs to move slightly relative to each other, thereby reducing the transmission of misalignment-induced forces to the equipment.
- Axial Misalignment: Axial misalignment refers to the offset between the axial positions of the connected shafts. While jaw couplings are primarily designed for torque transmission and misalignment compensation in angular and parallel directions, they can also handle minor amounts of axial misalignment due to the elastomer spider’s ability to absorb limited axial movement.
It is essential to note that jaw couplings have their limits in handling misalignment. Excessive misalignment beyond their design capabilities can lead to premature wear, reduced coupling life, and potential damage to the connected equipment. Therefore, it is crucial to understand the specific misalignment limits of the jaw coupling being used and ensure that the equipment operates within those limits.
In summary, jaw couplings handle shaft misalignment in rotating equipment by utilizing the flexibility of the elastomer spider to accommodate small angular, parallel, and axial misalignments. This feature helps protect the connected equipment from the detrimental effects of misalignment and ensures smooth and reliable operation.
What are the common installation mistakes to avoid when using jaw couplings?
Proper installation of jaw couplings is crucial to ensure their reliable and efficient operation. Avoiding common installation mistakes can prevent premature wear, misalignment, and potential equipment damage. Here are some of the most common installation mistakes to avoid when using jaw couplings:
- Incorrect Coupling Size: Using the wrong size of jaw coupling for the application can lead to various issues. Undersized couplings may not handle the required torque, leading to early failure, while oversized couplings may result in increased rotational inertia and decreased system performance. Always ensure that the selected coupling is appropriate for the torque and power requirements of the equipment.
- Misalignment: Improper alignment of the shafts during coupling installation can cause excessive forces and premature wear on the coupling components. Angular, parallel, and axial misalignments should be minimized and kept within the manufacturer’s recommended tolerances. Consider using alignment tools and techniques to achieve accurate shaft alignment.
- Over-Tightening: Applying excessive torque when tightening the coupling elements can lead to deformation of the elastomer spider or damage to the hubs. Over-tightening can also increase friction and cause premature wear. Follow the manufacturer’s specified torque values during installation to ensure proper clamping without causing damage.
- Lack of Lubrication: Some jaw couplings require lubrication to reduce friction and wear. Neglecting to lubricate the coupling elements can lead to increased friction, higher operating temperatures, and reduced coupling life. Follow the manufacturer’s guidelines regarding lubrication intervals and types of lubricants to use.
- Failure to Inspect Components: Before installation, carefully inspect all coupling components for any signs of damage, wear, or defects. Using a damaged or worn-out elastomer spider or other components can compromise the coupling’s performance and reliability. Replace any worn or damaged parts before installing the coupling.
- Improper Shaft End Preparation: Ensure that the shaft ends are clean, smooth, and free from burrs or imperfections before installing the coupling. Rough or uneven shaft surfaces can lead to misalignment and reduce coupling performance. Properly clean and prepare the shaft ends to ensure a secure and accurate fit.
- Not Following Manufacturer’s Guidelines: Each jaw coupling has specific installation instructions provided by the manufacturer. Failure to follow these guidelines can result in coupling failure or reduced performance. Always refer to the manufacturer’s installation manual and recommendations for proper installation procedures.
By avoiding these common installation mistakes, users can maximize the performance and longevity of jaw couplings in their applications. Proper installation ensures that the coupling operates efficiently, transmits power effectively, and reduces the risk of unexpected failures or downtime.
Types of Jaw Coupling Designs
Jaw couplings come in various designs to meet different application requirements. The main types include:
- One-Piece Jaw Coupling: This design consists of a single piece of material, typically made of steel or aluminum. It offers simplicity and compactness, making it suitable for light to medium-duty applications.
- Two-Piece Jaw Coupling: This design features two separate hubs with a flexible spider placed in between. The two-piece design allows for easier assembly and disassembly, making it convenient for maintenance and replacement of the elastomeric spider.
- Three-Piece Jaw Coupling: In this design, the coupling includes three parts: two hubs and an insert. The hubs are typically made of metal, while the insert is an elastomeric element (spider). Three-piece jaw couplings provide better damping of vibrations and are commonly used in applications where vibration isolation is crucial.
- Customizable Jaw Coupling: Some manufacturers offer customizable jaw couplings, allowing customers to choose different hub styles, materials, and spider hardness to tailor the coupling’s performance for specific applications.
Each design has its advantages and is selected based on factors such as torque requirements, misalignment compensation, and ease of maintenance.
editor by CX 2024-03-06