Product Description

Item No.	φD	L	W	L1	M	Tighten the strength(N.m)
SG7-8-C19-	19.5	20	1.2	9.4	M2.5	1
SG7-8-C26-	26	25.5	2.5	11.5	M3	1.5
SG7-8-C34-	34	32.3	3.3	14.5	M4	1.5
SG7-8-C39-	39	34.1	4.1	15	M4	2.5
SG7-8-C44-	44	34.5	4.5	15	M4	2.5
SG7-8-C50-	50	40.5	4.5	18	M5	7
SG7-8-C56-	56	45	5	20	M5	7
SG7-8-C68-	68	54	6	24	M6	12
SG7-8-C82-	82	68	8	30	M8	16
SG7-8-C94-	94	68	8	30	M8	28
SG7-8-C104-	104	70	10	30	M8	28

Item No.	Rated torque	Maximum Torque	Max Speed	Inertia Moment	N.m rad	RRO	Tilting Tolerance	End-play	Weight:(g)
SG7-8-C19-	1N.m	2N.m	10000prm	0.65×10-6kg.m²	200N.m/rad	0.04mm	1c	±0.2mm	12
SG7-8-C26-	1.4N.m	2.8N.m	10000prm	1.8×10-6kg.m²	690N.m/rad	0.04mm	1c	±0.2mm	31
SG7-8-C34-	2.8N.m	5.6N.m	10000prm	7.2×10-6kg.m²	1650N.m/rad	0.04mm	1c	±0.2mm	64
SG7-8-C39-	5.8N.m	11.6N.m	10000prm	1.8×10-5kg.m²	2500N.m/rad	0.04mm	1c	±0.2mm	97
SG7-8-C44-	8.7N.m	17.4N.m	10000prm	2.5×10-5kg.m²	2900N.m/rad	0.04mm	1c	±0.2mm	113
SG7-8-C50-	15N.m	30N.m	10000prm	8.2×10-5kg.m²	6700N.m/rad	0.04mm	1c	±0.2mm	195
SG7-8-C56-	25N.m	50N.m	10000prm	1×10-4kg.m²	8400N.m/rad	0.04mm	1c	±0.2mm	263
SG7-8-C68-	55N.m	110N.m	10000prm	1.9×10-4kg.m²	11500N.m/rad	0.04mm	1c	±0.2mm	445
SG7-8-C82-	80N.m	160N.m	10000prm	7×10-4kg.m²	14550N.m/rad	0.04mm	1c	±0.2mm	892
SG7-8-C94-	185N.m	370N.m	10000prm	1.23×10-3kg.m²	16900N.m/rad	0.04mm	1c	±0.2mm	950
SG7-8-C104-	255N.m	510N.m	10000prm	1.86×10-3kg.m²	25100N.m/rad	0.04mm	1c	±0.2mm	1190

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Industry Standards and Guidelines for Disc Couplings

Disc couplings, like other mechanical components, are subject to various industry standards and guidelines that ensure their safe and reliable operation. Some relevant standards include:

• API Standard 671: This American Petroleum Institute (API) standard provides guidelines for special-purpose couplings for use in petroleum, chemical, and gas industry services. It covers the design, materials, testing, and inspection of couplings, including disc couplings.
• AGMA Standard 9001: The American Gear Manufacturers Association (AGMA) standard 9001 addresses flexible couplings, including disc couplings, and provides recommendations for their design, installation, and maintenance.
• ISO 14691: This International Organization for Standardization (ISO) standard covers general-purpose industrial couplings, including disc couplings, and provides guidance on their selection, installation, and operation.

Manufacturers and engineers often refer to these standards and guidelines to ensure that disc couplings are designed, manufactured, and used according to recognized industry practices. Adhering to these standards helps enhance the reliability, safety, and performance of disc couplings in various industrial applications.

Suitability of Disc Couplings for High-Speed Rotation and Critical Alignment

Disc couplings are well-suited for applications involving high-speed rotation and critical alignment due to their unique design and performance characteristics:

• High-Speed Rotation: Disc couplings can handle high rotational speeds while maintaining their balance and integrity. Their lightweight and compact design minimize the effects of centrifugal forces, making them suitable for high-speed applications.
• Critical Alignment: Disc couplings offer excellent flexibility and angular misalignment compensation. They can accommodate axial, radial, and angular misalignments, making them suitable for applications where maintaining precise alignment is crucial.
• Torsional Stiffness: Disc couplings can provide a balance between flexibility and torsional stiffness, allowing them to transmit torque accurately even in critical alignment scenarios.
• High Torque Capacity: Many disc couplings are designed to handle high torque loads, making them suitable for applications with demanding torque requirements.
• Resonance Damping: The flexible nature of disc couplings can help dampen vibrations and reduce the risk of resonance, which is important in high-speed applications.

When selecting a disc coupling for high-speed rotation and critical alignment, it’s essential to consider factors such as torque requirements, speed range, misalignment compensation, space limitations, and dynamic behavior to ensure optimal performance and reliability in the specific application.

Key Benefits and Applications of Disc Couplings

Disc couplings offer several key benefits that make them suitable for a wide range of applications in mechanical systems. These benefits, along with their diverse applications, are highlighted below:

• High Torque Transmission: Disc couplings are capable of transmitting high levels of torque between shafts, making them suitable for heavy-duty machinery and equipment.
• Angular Misalignment Compensation: They can accommodate angular misalignment between shafts, ensuring smooth operation even when there are slight deviations in alignment.
• Axial Movement Absorption: Disc couplings can absorb limited axial movement along the shaft axis, preventing excessive forces from affecting connected components.
• Torsional Flexibility: The torsional flexibility of disc couplings allows them to dampen vibrations, shock loads, and torsional disturbances, enhancing the reliability and longevity of machinery.
• Reduced Maintenance: By reducing the transmission of vibration and shock, disc couplings can minimize wear and tear on connected equipment, resulting in lower maintenance requirements.
• High-Speed Applications: Their balanced design and ability to maintain alignment make disc couplings suitable for high-speed applications where precision and reliability are crucial.
• Precision Machinery: Disc couplings find applications in precision machinery such as CNC machines, robotics, and servo systems, where accurate motion control is essential.
• Industrial Machinery: They are commonly used in industrial machinery like pumps, compressors, conveyors, and generators to ensure efficient power transmission and reliable operation.
• Aerospace and Automotive: Disc couplings are utilized in aerospace and automotive applications where lightweight and reliable couplings are required for critical functions.

The versatility of disc couplings, along with their ability to provide torque transmission, misalignment compensation, and vibration dampening, makes them a preferred choice in various industries. Properly selecting and maintaining disc couplings can enhance machinery performance, reduce downtime, and contribute to overall operational efficiency.

editor by CX 2024-04-08