Product Description

FOUR COLORS AVAILANLE: RED ,ORANGE ,GALVANIZED ,BLUE  FOR GROOVED COUPLINGS ….
1.All grooved fitting FM UL approved 
2.grooved fitting Size:1-12″ 
3.Material:ductile iron  ASTM-A536 Grade 65-45-12
4.Surface :painting,epoxy,hot dip galvanzed grooved fittings
5.Gasket :   EDPM ,  tempersture Range :  (-34—-+110ºC)

                  SILICON , tempersture Range : (-40—-+177ºC)

                  NITRILE, tempersture Range : (-29—-+82ºC)

Ductile flexible coupling ,ductile iron flexible coupling / galvanized rigid coupling / grooved fittings

 

UL FM Flexbile Coupling
Nominal Size mm/in	Pipe O.D mm/in	Working Pressure PSI/MPa	Dimensions mm/in
			Ø	L	H
25  1	33.7  1.327	300  2.07	55.  2.165	95  3.74	45  1.772
32  1¼	42.4  1.669	300  2.07	65  2.559	105  4.133	45  1.772
40  1½	48.3  1.900	300  2.07	71.  2.795	110     4.331	45  1.772
50  2	60.3  2.375	300  2.07	82  3.228	124  4.882	45  1.772
65  2½	73.0  2.875	300  2.07	98  3.858	141 5.551	45  1.772
65  3OD	76.1  3.000	300  2.07	100  3.937	142  5.59	45  1.772
80  3	88.9  3.500	300  2.07	113  4.449	160  6.299	46  1.811
100  4	114.3  4.500	300  2.07	142  5.59	190  7.48	49  1.929
125  5.5OD	139.7 5.500	300  2.07	168  6.614	218  8.583	49  1.929
150  6.5OD	165.1  6.500	300  2.07	194  7.638	244  9.606	49  1.929
150  6	168.3       6.625	300  2.07	198  7.795	248  9.764	49  1.929
200 8	219.1  8.625	300  2.07	256.  10.079	320  12.598	60  2.362
250  10	273  10.748	300  2.07	328  12.913	420  16.535	64  2.52
300  12	323.9  12.752	300  2.07	380  14.961	454  17.874	64  2.52

WE CHINAMFG , MANUFACTURER OF STEEL PIPE AND PIPE FITTINGS ,HAVE EXPORTING EXPERIENCE FOR MORE
THAN 20 YEARS ,OUR PRODUCTS APPROVE ISO, TUV, PED ,API  CERTIFICATE .

                                       DETAILS    

Name	Rigid and flexible Coupling, elbow, tee, cross, reducer, cap, mechanical tee, mechanical cross, flange adaptor
Standard	ANSI, ASTM, ISO
Type	Manufacturer,trading company
Material	Ductile iron
Finish	Paint, Epoxy or Galvanization
Approval	FM/UL
Usage	1) Automatic sprinkler system for fire protection on commercial, civil and municipal constructions like water supplying, gas supplying, heat supplying, etc. 2) Industrial pipeline system on shipping, mine, oil field, textile, powder plant, etc. 3) Pipeline system on subway station, railway station, airport, seaport, bridge, etc.
Payment	L/C or T/T
Delivery Time	within 30 days or as per customers’ requirment

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Can Rigid Couplings Handle Misalignment Between Shafts?

Rigid couplings are not designed to handle misalignment between shafts. Unlike flexible couplings that can accommodate slight misalignment through their bending or elastic properties, rigid couplings are intended to provide a fixed and immovable connection between two shafts. As a result, any misalignment between the shafts can lead to increased stress and uneven loading on connected components.

It is essential to ensure precise alignment when using rigid couplings to avoid premature wear and failure of the system. The shafts must be perfectly aligned in both the axial and angular directions before installing the rigid coupling. Proper alignment helps distribute the load evenly and reduces stress concentration on specific areas, such as bearings and keyways.

If a system requires some level of misalignment compensation due to factors like thermal expansion or slight shaft deflection, a flexible coupling should be considered instead. Flexible couplings can tolerate small degrees of angular and axial misalignment while still transmitting torque efficiently and protecting the connected equipment from excessive stress and wear.

In summary, rigid couplings are best suited for applications where precise shaft alignment can be achieved and maintained, while flexible couplings are more appropriate for systems with potential misalignment or other dynamic factors that require some degree of flexibility.

What Role Does a Rigid Coupling Play in Reducing Downtime and Maintenance Costs?

A rigid coupling can play a significant role in reducing downtime and maintenance costs in mechanical systems by providing a robust and reliable connection between two shafts. Here are the key factors that contribute to this:

1. Durability and Longevity: Rigid couplings are typically made from high-quality materials such as steel or stainless steel, which offer excellent durability and resistance to wear. As a result, they have a longer service life compared to some other types of couplings that may require frequent replacements due to wear and fatigue.

2. Elimination of Wear-Prone Components: Unlike flexible couplings that include moving parts or elements designed to accommodate misalignment, rigid couplings do not have any wear-prone components. This absence of moving parts means there are fewer components that can fail, reducing the need for regular maintenance and replacement.

3. Minimization of Misalignment-Related Issues: Rigid couplings require precise shaft alignment during installation. When installed correctly, they help minimize misalignment-related issues such as vibration, noise, and premature bearing failure. Proper alignment also reduces the risk of unexpected breakdowns and maintenance requirements.

4. Increased System Efficiency: The rigid connection provided by a rigid coupling ensures efficient power transmission between the two shafts. There is minimal power loss due to flexing or bending, leading to better overall system efficiency. This efficiency can result in reduced energy consumption and operating costs.

5. Low Maintenance Requirements: Rigid couplings generally require minimal maintenance compared to some other coupling types. Once properly installed and aligned, they can operate for extended periods without needing frequent inspection or adjustment.

6. Reduced Downtime: The robust and reliable nature of rigid couplings means that they are less likely to fail unexpectedly. This increased reliability helps reduce unscheduled downtime, allowing the mechanical system to operate smoothly and consistently.

7. Cost-Effective Solution: While rigid couplings may have a higher upfront cost than some other coupling types, their long-term durability and low maintenance requirements make them a cost-effective solution over the life cycle of the equipment.

In conclusion, a rigid coupling’s ability to provide a durable and dependable connection, along with its low maintenance requirements and efficient power transmission, contributes significantly to reducing downtime and maintenance costs in mechanical systems.

What is a Rigid Coupling and How Does it Work?

A rigid coupling is a type of mechanical coupling used to connect two shafts together at their ends to transmit torque and rotational motion without any flexibility or misalignment accommodation. Unlike flexible couplings, rigid couplings do not allow for angular, parallel, or axial misalignment between the shafts. The main purpose of a rigid coupling is to provide a strong and solid connection between two shafts, ensuring precise and synchronous power transmission between them.

Structure and Design:

Rigid couplings are typically made from durable materials such as steel, stainless steel, or aluminum, which can withstand high torque and load applications. The coupling consists of two halves, each with a cylindrical bore that fits tightly onto the respective shafts. The two halves are then fastened together using bolts or set screws to ensure a secure and rigid connection.

Working Principle:

The working principle of a rigid coupling is straightforward. When the two shafts are aligned precisely and the coupling is securely fastened, any torque applied to one shaft gets directly transferred to the other shaft. The rigid coupling essentially makes the two shafts act as one continuous shaft, allowing for synchronous rotation without any relative movement or play between them.

Applications:

Rigid couplings are commonly used in applications where precise alignment and torque transmission are essential. Some common applications of rigid couplings include:

• High-precision machinery and equipment
• Robotics and automation systems
• Precision motion control systems
• Machine tools
• Shaft-driven pumps and compressors

Advantages:

The key advantages of using rigid couplings include:

• High Torque Transmission: Rigid couplings can handle high torque and power transmission without any loss due to flexibility.
• Precision: They provide accurate and synchronous rotation between the shafts, making them suitable for precise applications.
• Simple Design: Rigid couplings have a simple design with minimal moving parts, making them easy to install and maintain.
• Cost-Effective: Compared to some other coupling types, rigid couplings are generally more cost-effective.

Limitations:

Despite their advantages, rigid couplings have certain limitations:

• No Misalignment Compensation: Rigid couplings cannot accommodate any misalignment between the shafts, making precise alignment during installation crucial.
• Transmits Vibrations: Since rigid couplings do not dampen vibrations, they can transmit vibrations and shocks from one shaft to the other.
• Stress Concentration: In some applications, rigid couplings can create stress concentration at the ends of the shafts.

In summary, rigid couplings are ideal for applications that require precise alignment and high torque transmission. They offer a robust and straightforward solution for connecting shafts and ensuring synchronous power transmission without any flexibility or misalignment accommodation.

editor by CX 2024-03-18