Product Description

Product Description

 

1. The allowable compensation quantity listed in the table refers to the relative offset of 2 axes formed by the comprehensive factors such as vibration, shock, deformation and temperature change caused by manufacturing error, installation error and working load change under working condition.
2. The maximum allowable angular deviation of the coupling shall not exceed ±5°.

The maximum opening value is a circular hole or a tapered hole with a keyway.

Main applications:

DWZ disc eddy current brake is mainly used as load in loading dynamometer equipment. it is experimental apparatus which can measure the dynamic mechanical properties, especially in dynamic loading test whose power value is small or tiny, also can be treated as suction power devices of other dynamic devices.

DW series disc eddy current dynamometer is, is that add device for measuring torque and rotational speed on DWZ series disc eddy current brake, it is experimental apparatus which can measure the dynamic mechnical properties, especial in dynamic loading test whose power value is small or tiny.

CW eddy current brake as a load is mainly used to measure the mechanical characteristics of inspection equipment, it and other control instrument (including loading apparatus, torque speed sensor and torque power acquisition instrument etc.) can be composed of eddy current dynamometer can be used for performance testing of the internal combustion engine, motor, gas turbine, automobile and its dynamic mechanical components, compared with other power measuring device, the CW series power measuring device has the advantages of reliability, high stability and practicability.

Eddy current brake/dynamometer	Rated Power	Rated torque	Rated speed	Maximum rotational speed	Turning inertia	Maximum excitation voltage	Maximum excitation Current	Cooling water pressure	Flow of the cooling water
DWZ/DW-0.75	0.75	5	2000-2600	16000	0.002	80	3	0.1~0.3	1
DWZ/DW-3	3	10	2000-2600	14000	0.003	80	3	0.1~0.3	2
DWZ/DW-6	6	25	2000-2600	14000	0.003	80	3	0.1~0.3	3
DWZ/DW-10	10	50	2000-2600	13000	0.01	80	3	0.1~0.3	4.5
DWZ/DW-16	16	70	2000-2600	13000	0.02	80	3.5	0.1~0.3	6.5
DWZ/DW-25	25	120	2000-2600	11000	0.05	80	3.5	0.1~0.3	15
DWZ/DW-40	40	160	2000-2600	10000	0.1	90	4	0.1~0.3	25
DWZ/DW-63	63	250	2000-2600	9000	0.18	90	4	0.1~0.3	45
DWZ/DW-100	100	400	2000-2600	8500	0.32	120	4	0.1~0.3	60
DWZ/DW-160	160	600	2000-2600	8000	0.52	120	5	0.1~0.3	100
DWZ/DW-250	250	1100	2000-2600	7000	1.8	150	5	0.2~0.4	180
DWZ/DW-300	300	1600	2000-2600	6000	2.7	150	5	0.2~0.4	210
DWZ/DW-400	400	2200	2000-2600	5000	3.6	180	10	0.2~0.4	300
DWZ/DW-630	630	3600	2000-2600	5000	5.3	180	10	0.2~0.4	450

 

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Specific Safety Precautions When Working with Shaft Couplings

Working with shaft couplings involves handling rotating machinery and mechanical components. To ensure the safety of personnel and prevent accidents, specific safety precautions should be followed during installation, maintenance, and operation:

1. Lockout-Tagout (LOTO):

Prior to any work on machinery involving couplings, implement a lockout-tagout procedure to isolate the equipment from its power source. This ensures that the machinery cannot be accidentally energized during maintenance or repair, protecting workers from potential hazards.

2. Personal Protective Equipment (PPE):

Always wear appropriate personal protective equipment (PPE), including safety goggles, gloves, and appropriate clothing, when working with shaft couplings. PPE helps protect against potential hazards such as flying debris, sharp edges, or contact with moving parts.

3. Proper Training and Supervision:

Only trained and authorized personnel should work with shaft couplings. Ensure that workers have the necessary knowledge and experience to handle the equipment safely. Adequate supervision may be required, especially for less-experienced personnel.

4. Inspection and Maintenance:

Regularly inspect shaft couplings and associated components for signs of wear, damage, or misalignment. Address any issues promptly to prevent equipment failure and potential accidents.

5. Follow Manufacturer’s Guidelines:

Adhere to the manufacturer’s instructions and guidelines for installation, operation, and maintenance of the specific coupling model. Improper use or deviation from recommended procedures may compromise safety and void warranties.

6. Avoid Overloading:

Do not exceed the torque and speed limits specified by the coupling manufacturer. Overloading a coupling can lead to premature failure and pose safety risks to operators and nearby equipment.

7. Shaft Guards and Enclosures:

Install appropriate guards and enclosures to prevent accidental contact with rotating shafts and couplings. These safety measures help reduce the risk of entanglement and injuries.

8. Zero Energy State:

Ensure that all stored energy in the equipment, such as compressed air or hydraulic pressure, is released and the equipment is in a zero energy state before starting work.

9. Avoid Loose Clothing and Jewelry:

Remove or secure loose clothing, jewelry, and other items that could get caught in moving parts.

10. Maintain a Clean Work Area:

Keep the work area clean and free from clutter to avoid tripping hazards and facilitate safe movement around the machinery.

By following these safety precautions, personnel can minimize the risks associated with working with shaft couplings and create a safer working environment for everyone involved.

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Temperature and Speed Limits for Different Shaft Coupling Types

The temperature and speed limits of shaft couplings vary depending on the materials and design of the coupling. Manufacturers provide specific guidelines and ratings for each coupling type. Below are general temperature and speed limits for some common shaft coupling types:

1. Elastomeric Couplings:

Elastomeric couplings, such as jaw couplings and tire couplings, typically have temperature limits ranging from -40°C to 100°C (-40°F to 212°F). The speed limits for elastomeric couplings are generally up to 5,000 RPM, but some designs may allow higher speeds.

2. Metallic Couplings:

Metallic couplings, like gear couplings and disc couplings, can handle a wider temperature range, typically from -50°C to 200°C (-58°F to 392°F). The speed limits for metallic couplings vary based on the size and design, but they can range from 3,000 RPM to over 10,000 RPM.

3. Grid Couplings:

Grid couplings have temperature limits similar to metallic couplings, ranging from -50°C to 200°C (-58°F to 392°F). The speed limits for grid couplings are typically in the range of 3,000 to 5,000 RPM.

4. Oldham Couplings:

Oldham couplings usually have temperature limits from -30°C to 100°C (-22°F to 212°F) and speed limits ranging from 1,000 to 5,000 RPM.

5. Beam Couplings:

Beam couplings generally have temperature limits from -40°C to 120°C (-40°F to 248°F) and speed limits between 5,000 to 10,000 RPM.

6. Fluid Couplings:

Fluid couplings are suitable for a wide range of temperatures, often from -50°C to 300°C (-58°F to 572°F). The speed limits depend on the size and design of the fluid coupling but can extend to several thousand RPM.

It’s important to note that these are general guidelines, and the actual temperature and speed limits may vary based on the specific coupling manufacturer, material quality, and application requirements. Always refer to the manufacturer’s documentation and technical specifications for accurate and up-to-date temperature and speed limits for a particular shaft coupling model.

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Best Practices for Installing a Shaft Coupling for Optimal Performance

Proper installation of a shaft coupling is crucial for ensuring optimal performance and preventing premature wear or failure. Follow these best practices to install a shaft coupling correctly:

1. Shaft Alignment:

Ensure that both the driving and driven shafts are properly aligned before installing the coupling. Misalignment can lead to increased stress on the coupling and other connected components, reducing efficiency and causing premature wear. Use alignment tools, such as dial indicators or laser alignment systems, to achieve accurate shaft alignment.

2. Cleanliness:

Before installation, clean the shaft ends and the coupling bore thoroughly. Remove any dirt, debris, or residue that could interfere with the coupling’s fit or cause misalignment.

3. Lubrication:

Apply the recommended lubricant to the coupling’s contact surfaces, such as the bore and shaft ends. Proper lubrication ensures smooth installation and reduces friction during operation.

4. Correct Fit:

Ensure that the coupling is the correct size and type for the application. Use couplings with the appropriate torque and speed ratings to match the equipment’s requirements.

5. Fastening:

Use the recommended fastening methods, such as set screws or keyways, to securely attach the coupling to the shafts. Make sure the fasteners are tightened to the manufacturer’s specifications to prevent loosening during operation.

6. Spacer or Adapter:

If required, use a spacer or adapter to properly position the coupling on the shafts and maintain the desired distance between the driving and driven components.

7. Avoid Shaft Damage:

Be careful during installation to avoid damaging the shaft ends, especially when using set screws or other fastening methods. Shaft damage can lead to stress concentrations and eventual failure.

8. Check Runout:

After installation, check the coupling’s runout using a dial indicator to ensure that it rotates smoothly and without wobbling. Excessive runout can indicate misalignment or improper fit.

9. Periodic Inspection:

Regularly inspect the coupling and its components for signs of wear, misalignment, or damage. Perform routine maintenance as recommended by the manufacturer to prevent issues from worsening over time.

10. Follow Manufacturer’s Guidelines:

Always follow the manufacturer’s installation instructions and guidelines. Different types of couplings may have specific installation requirements that need to be adhered to for optimal performance and safety.

By following these best practices, you can ensure that your shaft coupling is installed correctly, maximizing its efficiency and reliability in your mechanical power transmission system.

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editor by CX 2024-04-17