Product Description

Universal Wide Range Flexible Ductile Iron Straight Coupling

 

MATERIALS
ITEM	PARTS	MATERIAL
1	Body	BSEN1563 EN-GJS(QT)-450-10/Carbon Steel
2	Gland	BSEN1563 EN-GJS(QT)-450-10
3	Seals	EPDM/NBR
4	Fasteners	Stainless Steel/Carbon Steel with Dacromet Coating/GAL Carbon Steel
5	Coating	Fusion Bonded Epoxy

DIMENSIONS(PN10/PN16)
DN	RANGE	L	L1	H	ID	ID1	OD	N-MSXL1	BOLT TORQUE	WIGHT(KG)
(mm)		(mm)	(mm)	(mm)	(mm)	(mm)	(mm)	(mm)	(Nm)
50	59-72	188	148	95	72	76	153	4-M12*180	55-65	4.1
65	72-85	188	148	95	85	89	173	4-M12*180	55-65	4.1
80	88-103	188	146	95	103	107	185	4-M12*180	55-65	4.1
100	109-128	188	146	95	127	132	208	4-M12*180	55-65	4.6
125	138-153	198	153	95	158	162	256	4-M12*190	55-65	8.3
150	159-182	198	153	95	182	186	280	4-M12*190	55-65	8.5
175	189-212	233	187	130	211	216	329	4-M12*225	55-65	9.0
200	218-235	233	187	130	234	239	333	4-M12*225	55-65	10.6
225	242-262	233	185	130	261	265	379	6-M12*225	55-65	14.5
250	272-289	233	186	130	288	295	391	6-M12*225	55-65	15.4
300	315-349	233	187	130	349	352	464	6-M12*225	55-65	20.0
	322-339	233	187	130	338	345	444	6-M12*225	55-65	23.1
	338-360	233	187	130	359	366	460	6-M12*225	55-65	23.1
350	351-391	250	187	130	390	395	502	10-M12*225	55-65	26.8
400	400-442	250	187	130	441	446	558	10-M12*225	55-65	31.9
450	455-493	250	187	130	492	497	608	10-M12*225	55-65	36.6
500	500-599	250	187	130	598	594	662	10-M12*225	55-65	40.0
600	600-692	250	187	130	691	697	768	10-M12*225	55-65	42.0
700	708-780	250	187	130	779	785	910	10-M12*225	55-65	45.0

 

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How do flexible couplings handle axial movement in rotating machinery?

Flexible couplings are designed to handle different types of misalignments in rotating machinery, including axial movement or axial misalignment. Axial movement occurs when there is displacement along the axis of rotation, causing one shaft to move closer to or away from the other shaft. Here’s how flexible couplings handle axial movement:

• Sliding Capability: Many flexible couplings, especially those with elastomeric elements or certain designs, can slide along the shafts they connect. This sliding capability allows the coupling to accommodate axial movement without introducing additional stress on the connected components. The elastomeric elements can compress or stretch slightly to absorb the axial displacement.
• Multiple-piece Designs: Some flexible couplings consist of multiple pieces, which allow for axial movement. These designs often have a floating member or a spacer that separates the two shaft-connected components. The floating member can move axially as needed, while still transmitting torque and compensating for other misalignments.
• Double-Cardanic Design: Certain high-performance flexible couplings use a double-cardanic design, allowing for misalignment in multiple directions, including axial movement. This design features two sets of flexible elements that work together to accommodate different misalignments and provide a high degree of flexibility.

It’s important to note that while flexible couplings can handle a certain degree of axial movement, excessive axial misalignment might require a different type of coupling or additional measures to be addressed properly.

During the selection and installation process, it’s essential to consider the application’s axial movement requirements and choose a flexible coupling that can accommodate the expected axial displacement while still providing the desired performance, such as vibration damping, shock absorption, or precision motion control.

Can flexible couplings be used in pumps, compressors, and fans?

Yes, flexible couplings can be used in pumps, compressors, and fans, and they are commonly employed in these types of rotating machinery. Flexible couplings offer several advantages that make them suitable for such applications:

• Misalignment Compensation: Pumps, compressors, and fans often experience misalignments due to various factors, such as thermal expansion, foundation settling, or component wear. Flexible couplings can accommodate angular, parallel, and axial misalignments, helping to maintain proper alignment between the driving and driven components.
• Vibration Damping: Flexible couplings help dampen vibrations in rotating machinery, which is essential for smooth operation and reduced wear on components. In pumps, compressors, and fans, vibration control is crucial to prevent premature failure and maintain reliable performance.
• Shock Load Absorption: These rotating machines may encounter shock loads during startup or shutdown, especially in reciprocating equipment like reciprocating pumps or compressors. Flexible couplings can absorb and mitigate the impact of such loads, protecting the connected equipment from damage.
• Reduced Maintenance: Flexible couplings with elastomeric elements or other self-lubricating features require minimal maintenance, leading to cost savings and reduced downtime in pumps, compressors, and fans.
• Energy Efficiency: Certain flexible coupling designs, such as beam couplings or certain elastomeric couplings, have low mass and inertia. This characteristic helps improve the energy efficiency of rotating machinery, which is particularly beneficial in large-scale pumps, compressors, and fans used in industrial applications.
• Adaptability: Pumps, compressors, and fans often have varying operating conditions and load profiles. Flexible couplings are adaptable to different operating environments, making them suitable for diverse applications.

In summary, flexible couplings offer several performance-enhancing features that make them well-suited for use in pumps, compressors, and fans. Their ability to accommodate misalignment, dampen vibrations, absorb shocks, and reduce maintenance requirements contributes to improved reliability, efficiency, and longevity of the connected rotating machinery.

How does a flexible coupling handle angular, parallel, and axial misalignment?

A flexible coupling is designed to accommodate various types of misalignment between two rotating shafts: angular misalignment, parallel misalignment, and axial misalignment. The flexibility of the coupling allows it to maintain a connection between the shafts while compensating for these misalignment types. Here’s how a flexible coupling handles each type of misalignment:

• Angular Misalignment: Angular misalignment occurs when the axes of the two shafts are not collinear and form an angle with each other. Flexible couplings can handle angular misalignment by incorporating an element that can flex and bend. One common design is the “spider” or “jaw” element, which consists of elastomeric materials. As the shafts are misaligned, the elastomeric element can deform slightly, allowing the coupling to accommodate the angular offset between the shafts while still transmitting torque.
• Parallel Misalignment: Parallel misalignment, also known as offset misalignment, occurs when the axes of the two shafts are parallel but not perfectly aligned with each other. Flexible couplings can handle parallel misalignment through the same elastomeric element. The flexible nature of the element enables it to shift and adjust to the offset between the shafts, ensuring continuous power transmission while minimizing additional stresses on the machinery.
• Axial Misalignment: Axial misalignment, also called end-play misalignment, occurs when the two shafts move closer together or farther apart along their common axis. Flexible couplings can handle axial misalignment through specific designs that allow limited axial movement. For instance, some couplings use slotted holes or a floating member that permits axial displacement while maintaining the connection between the shafts.

By providing the capability to handle angular, parallel, and axial misalignment, flexible couplings offer several advantages for power transmission systems:

• They help to prevent premature wear and damage to the connected equipment, reducing maintenance and replacement costs.
• They minimize vibration and shock loads, enhancing the overall smoothness and reliability of the machinery.
• They reduce the risk of equipment failure due to misalignment-induced stresses, improving the system’s operational life.
• They allow for easier installation and alignment adjustments, saving time and effort during setup and maintenance.

Overall, flexible couplings play a crucial role in handling misalignment and ensuring efficient power transmission in various industrial applications.

editor by CX 2024-04-08