Stainless Steel: JIS SCS1, SCS2, SCS13, SCS13L, SCS14, SCS14L/ DIN G-X7Cr13, G-X20Cr14, G-X6CrNi18 9, G-X6CrNiMo18 10, 1.3955, 1.4308, 1.4408, 1.4581 / ASTM/AISI CA-15, CA-40, CF-3/304L, CF-3M/316L, CF-8/304, CF-8M/316, etc Carbon Steel: JIS SC450, SCC5 / DIN GS-45, GS-60 / ASTM WCB, 450-240, 80-40, etc Alloy Steel: JIS SCW480, SCSiMn2, SCCrMn3 / DIN GS-20Mn5, GS-37MnSi5, GS-34CrMo4, etc Heat Resistance Steel: JIS SCH13, SCH21, SCH24/ DIN G-X15CrNiSi25 20 1.4840,G-X45CrNiSi35 25 1.4857 / ASTM HN, HK30, HK, HK40, HHM HP, HT Bronze or Copper: JIS BC6, ALBC6, etc Other materials Carbon Steel, Alloy Steel, Hight Manganese Steel, Tool steel, Heat-resistant Steel, Al-Si Alloy, etc also available according to customer’s request.
- Required documents for offer to be provided by customer:
Drawings with formats of IGS (3D), DWG or DXF (Auto CAD 2D), PDF, JPG
Standard of material (Preferable to provide Element Percentage of C, Si, Mn, P, S, etc and Physical/Machanical Properties of the material)
Unit Weight of Rough Casting
Production technology: Lost-wax casting/investment casting
- Main production equipment:
Sand glueing tanks
Intermediate frequency electrical induction furnaces
Shot blast machines
Heat treatment furnaces
Heat treatment water tank
Acid solution and water cleaning tank
Buffing / polishing machines / Electrical polishing
- Unit weight: 1.2g~80,000g per piece
- Other details:
Taper hole, deep hole, bent hole D>Ø2mm L=1D
Minimum outside radius R0.3mm, minimum inside radius R0.5mm
Minimum thickness of 1.5mm, some parts with minimum thickness of 0.8mm
- Tolerance of dimension for cast:
Dimension Range (mm) Common Tolerance Special Tolerance < 25 +/- 0.25 mm +/- 0.13 mm 25 ~ 50 +/- 0.40 mm +/- 0.25 mm 50 ~ 100 +/- 0.80 mm +/- 0.50 mm > 100 +/- 1 % +/- 0.5 %
- Minimum order: No limit
- Delivery: Within 30 working days after signing of contract and confirmation of samples by client
- Technological process:
- Some Products:
- Testing equipments:
- Company information:
Torque and Speed Ratings of Flange Couplings
Flange couplings are available in various sizes and designs to accommodate a wide range of torque and rotational speed requirements. The torque and speed ratings of flange couplings depend on several factors, including their size, material, and design.
The torque rating of a flange coupling indicates the maximum amount of torque it can transmit without experiencing failure or damage. It is typically specified in Nm (Newton-meters) or lb-ft (pound-feet). The torque rating varies for different sizes and types of flange couplings. Larger flange couplings generally have higher torque ratings compared to smaller ones.
The speed rating of a flange coupling represents the maximum rotational speed at which it can operate reliably without excessive vibration or wear. It is typically expressed in RPM (revolutions per minute). The speed rating is influenced by factors such as the design, material, and balancing of the flange coupling. Higher-speed applications require flange couplings that can handle the increased centrifugal forces and dynamic loads associated with higher RPMs.
Size and Type:
The torque and speed ratings vary for different sizes and types of flange couplings. For example:
- Smaller flange couplings, such as those used in light-duty applications, may have torque ratings ranging from a few Nm to several hundred Nm, and speed ratings up to a few thousand RPM.
- Larger flange couplings, used in heavy-duty industrial applications, can have torque ratings exceeding several thousand Nm and speed ratings that may reach tens of thousands of RPM.
- Flexible flange couplings may have slightly lower torque ratings compared to rigid flange couplings but offer greater misalignment compensation.
It is essential to refer to the manufacturer’s specifications and technical data to determine the specific torque and speed ratings for each size and type of flange coupling. Manufacturers typically provide detailed performance data to help users select the appropriate flange coupling for their specific application.
When selecting a flange coupling, it is crucial to consider the torque and speed requirements of the application. The operating conditions, such as load fluctuations and thermal effects, should also be taken into account to ensure the flange coupling’s reliable performance and longevity.
Flange couplings come in various sizes and designs, each with its own torque and speed ratings. Properly selecting a flange coupling that meets the specific torque and speed requirements of the application is essential to ensure efficient and trouble-free power transmission in mechanical systems.
Maintenance-Free Flange Couplings
Flange couplings can be designed to be maintenance-free, meaning they require minimal or no regular maintenance throughout their operational life. The key features and options that contribute to maintenance-free flange couplings include:
- Sealed and Lubricated: Some flange couplings are sealed and pre-lubricated with high-performance grease during the manufacturing process. This ensures that the coupling remains properly lubricated over an extended period, eliminating the need for routine lubrication.
- Self-Lubricating Materials: Certain flange couplings are constructed from self-lubricating materials, such as polymers or composites, that provide a low-friction interface between the mating surfaces. This reduces wear and eliminates the need for additional lubrication.
- Maintenance-Free Bearings: Flange couplings with integrated maintenance-free bearings further enhance the overall maintenance-free operation. These bearings are designed to withstand the required loads and provide long-lasting performance without the need for regular lubrication.
- Corrosion-Resistant Materials: Flange couplings made from corrosion-resistant materials, such as stainless steel or coated alloys, can resist environmental factors that might lead to corrosion and premature wear, resulting in extended maintenance intervals.
- Robust Design: A well-engineered flange coupling with a robust design can withstand harsh conditions, shock loads, and other stresses, reducing the likelihood of component failure and the need for maintenance.
It is essential to select a flange coupling that is specifically labeled as “maintenance-free” or “self-lubricating” by the manufacturer to ensure that it meets your maintenance objectives. However, it’s important to note that even maintenance-free flange couplings may still require periodic inspection to check for wear, alignment issues, or other potential problems.
Advantages of Flange Couplings in Mechanical Systems
Flange couplings offer several advantages in mechanical systems, making them a popular choice for connecting shafts in various applications:
- High Torque Transmission: Flange couplings provide a rigid and secure connection between shafts, allowing for efficient transmission of high torque without slippage or power loss.
- Precise Alignment: Proper alignment of flange couplings ensures that the connected shafts are in perfect axial alignment, reducing the risk of excessive bearing loads and increasing the longevity of the machinery.
- Zero Backlash: Flange couplings have no play or free movement between the shafts, resulting in immediate torque transmission and precise motion control, especially in applications requiring precise positioning.
- Robust and Durable: Flange couplings are typically made from high-quality materials such as steel, cast iron, or aluminum, providing excellent durability and resistance to wear and corrosion.
- Wide Range of Sizes and Torque Capacities: Flange couplings are available in various sizes and configurations, allowing them to be used in a wide range of applications with different torque requirements.
- Simple Installation: Installing flange couplings is relatively straightforward, requiring alignment and fastening of the flanges with bolts and nuts.
- Wide Application Range: Flange couplings are used in various industries, including heavy machinery, pumps, compressors, marine propulsion, and power generation equipment.
- Suitable for High-Speed Applications: Flange couplings can handle high rotational speeds, making them suitable for applications requiring high-speed power transmission.
- Minimal Maintenance: Once properly installed, flange couplings require minimal maintenance, reducing downtime and operational costs.
Despite their advantages, flange couplings also have some limitations. They lack the ability to compensate for misalignment like flexible couplings, which can lead to increased stress on bearings and other components if not correctly aligned. Additionally, the rigid nature of flange couplings means they may not be suitable for applications where shaft misalignment is common or where shock and vibration absorption is required.
Overall, flange couplings are a reliable and robust choice for mechanical systems, particularly in applications demanding high torque transmission and precise shaft alignment. Proper installation and maintenance are crucial to ensure optimal performance and longevity of both the coupling and the connected machinery.
editor by CX 2023-09-13