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Changzhou Duowei Electric Co., Ltd. was founded in 1997 and has more than 200 employees. It has developed hundreds of different product applications and established extensive strategic partnerships around the world.

We can provide customers with "customized services" to meet their long-term needs through tailor-made products. At the same time, we have more than 20 years of production experience and can provide large-scale electric motor production services.

ZWS series brushless DC motors, HC series motors, and YY series induction motors have passed UL certification. HC series motors, YY series induction motors, and YDK series air-conditioning motors have passed 3C certification and obtained "Export Product Quality License"

We have realized mass production of 57ZWS, 83ZWS, 120ZWS brushless DC motors. Besides, the linear motor was also successfully developed and put into mass production.

 

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Efficient speed reducers can achieve significant savings, both in energy and drive component costs. In addition, gear motors also assists the environment and the workers operating them. Industrial electric motor systems are responsible for approximately 1/12 of all greenhouse gas emissions from fossil fuel power plants. By reducing motor power consumption with efficient speed reducers, like gear motors, the production of greenhouse gases can be significantly reduced.

Gear motors provide an advantage when directly coupled to the motor output shaft. This creates a mechanical advantage based on a ratio between the number of gears and the number of teeth on each gear. For example, if a motor generates 100 lb-in. of torque, attaching a 5:1 gearhead generates an output torque of 500 lb-in.

Gear motors are also known as gear reducers because as they increase output torque they decrease output speed. A motor running at 1,000 rpm fitted with a 5:1 ratio gearhead outputs 200 rpm. This speed reduction improves system performance because many motors do not operate efficiently at low rpm.

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Spur gears are the simplest type of gear, with straight teeth mounted on a parallel shaft. Spur gearboxes include one or more sets of pinion-gears, in which one pinion drives one gear. These sets can be stacked or cascaded to achieve higher reduction ratios. Spur gear systems are versatile, and can come in a range of sizes and gear ratios to meet specific torque and speed requirements.

 

Planetary gear heads involve several gears per stage rather than one pinion-gear set. A "sun gear" drives multiple planet or satellite gears, which then mesh on the inside of an internal (annular) gear to provide relatively high torque and power transmission ratings.

 

Worm gearing uses right-angled drives in which a worm drives a wheel coupled to the output shaft or shafts. This arrangement is used for high reduction and compact right-angle power transmission. Because the wheel cannot turn the worm it can be used as a braking system for the gearbox. The gears are designed to handle high shock loads.

 

 

 

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1. Casing 

The casing is very important in gear motors as it houses all the other components. The casing must be strong enough to contain the mechanical stress of the gears while also protecting the gears from outside forces. A casing is usually made from high-strength materials such as steel or aluminum.

2. Gear Trains

3. Input & Output Shafts

4. Bearings

5. Sealants

1. Maintain Good Housekeeping

2. Conduct Regular Inspections

While a full inspection may appear to be too difficult, a simple visual inspection of gear contact patterns through an inspection port can help prevent catastrophic failures in the future. If there isn't any in-house inspection experience, an expert might be recruited to execute the examination and train people. By overcoming problems for conducting an inspection, you can help to extend the life of your gearbox and avoid catastrophic failure. This could save time, money, worker harm, and damage to nearby equipment.
Before opening the gearbox inspection port, you should conduct a comprehensive external inspection. Use an inspection form to keep track of critical information that would otherwise be lost once the cleaning is done. Examine the exterior of the gear housing for symptoms of overheating, corrosion, contamination, oil leaks, and damage before cleaning it. Tightening torque of structural fasteners carrying large stresses, such as torque arm bolts is to be measured and corrected Look for signs of movement at structural interfaces, such as cracked paint or fretting corrosion. Note the condition of the fasteners and look for fretting corrosion or other signs of movement on load-bearing surfaces of components, for taking corrective action.

3. Keep an Eye out for Overheating











4. Look for Wear & Tear Signs

5. Conduct Vibration Analysis

5. Check the Condition of Your Shaft

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Gear ratio, gearbox ratio, or reduction ratio is the ratio of the velocity of the input gear to the velocity of the output gear in a gearbox. A ratio greater than one indicates speed reduction, while a ratio less than one indicates speed increase. This ratio is directly proportional to the correlation between the numbers of teeth of different gears in the system. If an output (driven) gear has 20 teeth and an input (drive) gear has 10 teeth, the gear ratio would be 2:1. In compound gearing configurations, the overall ratio is the product of the ratios of each connection.

Torque is the angular force generated by the motor to handle a required load, expressed in force distance units such as foot-pounds (ft-lb) or newton meters (N-m). Starting torque defines the torque the motor produces at startup. Continuous torque defines the torque the motor produces at constant running conditions. Output torque in a gearmotor is largely dependent on the gear ratio used. Larger torque can be achieved using a higher gear ratio, which also reduces shaft speed.

Backlash is the angle that the output shaft of a gearbox can rotate without the input shaft moving, or the gap between the teeth of two adjacent gears. For applications without load reversals or reverse-operation, this factor is insignificant. However, in precision applications where load reversals occur (such as robotics, automation, CNC machines, etc.), backlash is crucial to consider for accuracy and positioning.

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Changzhou Duowei Electric Co.,Ltd. was founded in 1997 and has more than 200 employees. It has developed hundreds of different product applications and established extensive strategic partnerships around the world with these products. Duowei Electric, the manufacturer of Wit Motors, our company does not use "conflict minerals", and the broad service industries include: automotive, industrial automation, robotics, household equipment, medical equipment, HVAC systems, office equipment, defense and aerospace, Electrical equipment and power tools.

A: Brush dc motors, on the other hand, provide high peak torques and may be driven by simple speed controllers to move a wide range of applications. They are frequently less expensive than alternative options, especially in big quantities. They can also have a linear torque-speed connection, which simplifies control.

A: Brushed motors do not need additional electronics to run. Hence, they offer a plug-and-play option. The lack of electronics saves considerable costs. Brushed motors can work with gearheads, and their lifespan is not affected by the same. Both the motor and the gearhead are mechanical components that witness a high degree of wear and tear. They offer high starting torque.

A: If there's two heavy wires, with or without light ones, it's a brushed DC motor. If there's light wires, too, then chances are the motor has some feedback built in; either a tacho-generator (gives a voltage proportional to motor speed) or a shaft encoder of some sort.

A: Brushed motor life is limited by the brush type and can attain 1,000 to 3,000 hours on average, while brushless motors can attain tens of thousands of hours on average, as there are no brushes to wear.

A: Carbon brushes will on average last between 1 and 5 years in most power tools but this is all dependant on how much they are used in number of hours, the more daily use the power tool has the quicker it will wear over a certain period of time.

A: Capacitors are usually the most effective way to suppress motor noise, and as such we recommend you always solder at least one capacitor across your motor terminals. Typically you will want to use anywhere from one to three 0.1 µF ceramic capacitors, soldered as close to the motor casing as possible.

A: For a dc motor, speed is proportional to back emf / field flux. If you reduce the field-flux of an already running motor, its speed increases. If you reduce it to a very low value, the speed becomes dangerously high.

A: Yes, although not as efficient as brushless motors. Brushless motors are typically 85-90% efficient whereas brushed DC motors are around 75-80% efficient.

A: Yes, they are compatible with variable power sources, making them suitable for battery-operated devices. In case of brushed DC motor, however, operation directly from a voltage source or battery is possible too. If the voltage is adjustable, the speed can also be varied.

A: Generally, if the brush is worn down to 1/4th of its original length, it is time for replacement. If you need to replace your brushes make sure that the brush is the correct dimensions, type and grade for the motor. Typically you can find this information in your motor's manual.

 

As one of the leading gear motor manufacturers and suppliers in China, we warmly welcome you to wholesale high-grade gear motor for sale here from our factory. All custom products made in China are with high quality and competitive price. Contact us for OEM service.

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