Pros and cons of a direct drive motor in a washing machine

Manufacturers are aggressively promoting inverter motors and direct drive washing machines, touting their undeniable advantages over belt-driven models. However, the shortcomings of modern automatic machines, the significant risks, and the high costs often remain unaddressed. We suggest figuring out whether you can trust the advertising. Our detailed review of the pros and cons of beltless units will help. And finally, here are the top 5 best direct drive machines.

Main advantages

The direct drive system eliminates the need for a drive belt. The drum is mounted directly on the shaft, eliminating the need for an intermediate link. This allows the machine to achieve higher power outputs.

1. Motor durability. Unlike asynchronous or commutator motors, inverter motors have no rubbing parts, such as brushes, making them more durable and reliable. This is backed by a 10-year manufacturer's warranty on the motor. However, other parts are not covered by the warranty.
2. Quiet operation. The direct drive transmission significantly reduces noise levels. Without a belt or brushes, vibration and hum during operation are significantly reduced.
3. Washing efficiency. The brushless motor is electronically controlled and capable of sudden stops, rapid acceleration, and bidirectional rotation. This allows for better washing and spinning results.
4. High speed. The aforementioned rapid drum rotation also reduces overall wash time. Thanks to the rapid acceleration and fast wash speed, programs are programmed for express cycles.
5. Energy efficiency. The fewer components in a system, the less energy it consumes, so the absence of a belt has a positive effect on the machine's energy consumption.

There is another advantage: direct-drive machines can “read” the weight of the loaded laundry and control the power required for washing.

The main thing is that there is no need to constantly change a breaking belt. Moreover, if the drum is overloaded or there is a risk of imbalance, the system warns with an error, rather than continuing to work until the disastrous end.Among the advantages is the reduced dimensions of the washing machine, as the absence of a pulley and belt makes the machine more compact and easier to use.

Main disadvantages

As enticing as the advantages listed above may be, one mustn't forget the pitfalls. Overlooking them can lead to a direct drivetrain overpayment. These include the following manufacturer oversights.

• Bearing load. Without the additional support of a drive belt, the entire load is transferred to the bearings and seals. This leads to rapid wear and the need for regular replacement.
• Vulnerable engine. With direct drive, the electric motor is located under the tank, and even the slightest leak in the seals will lead to serious problems.The ten-year warranty does not cover such a breakdown, and repairs will be very expensive.
• Sensitive electronics. The inverter motor is controlled by a complex system of triacs, which is sensitive to any voltage surges in the power grid. If the machine isn't connected to a voltage stabilizer, repairs can be costly.

The reason for these shortcomings lies in the poorly thought-out design, which wasn't fully prepared for the removal of the belt. It's likely that manufacturers will address these shortcomings in the future. However, for now, expensive beltless automatic transmissions are generally very unreliable and easily fail if they leak.

Review of popular models

The pros and cons mentioned above are typical for all direct-drive washing machines, so if these advantages are more appealing, choose from the wide selection of modern models. However, don't buy the first machine you see with a "DirectDrive" sticker. Not all machines are worth considering, so first, check out the top 5 best washing machines of this type:

• The LG F-10B8QD opens the rankings with a 7 kg front-loading model with electronic controls and a digital display. It represents the "golden mean" with an optimal price-quality ratio. For a reasonable price of just over $200, you get Class A washing performance, a 1000 rpm spin, economical operation with an A++ energy rating, enhanced safety, and 13 modes.

This model has a 19-hour delayed start timer, as well as a convenient hatch with a diameter of 30 cm and a door opening of 180 degrees.

• LG F-12B8WDS7. The next LG model has similar characteristics, but differs from the previous model in its smaller capacity of 6.5 kg and its surprisingly compact size, with a depth of 44 cm. Other advantages include a 1200 rpm spin speed, sound feedback, self-cleaning drum, and Smart Diagnosis mobile diagnostics. Consumers also note the bubble drum type and the unique “6 motions of care” technology.
  
  
• LG F-2J5NN4L. This silver model features a direct-drive motor and touchscreen controls. Otherwise, the machine shares the same power and features as its siblings: spin speeds up to 1200 rpm, variable water temperature, a bubble drum, and 13 programs. The only difference is full leak protection.
• Samsung WW70K62E09WDLP. Samsung offers a more powerful and feature-rich washing machine. Firstly, it boasts a 7 kg capacity with the ability to add more laundry at any time during the wash cycle. Secondly, it boasts high energy efficiency rating of A+++. Thirdly, it offers an expanded range of modes, including a baby program, steam, soak, and an economy cycle. And, of course, it boasts leading Samsung technologies, including eco-cleaning, bubble wash, a Swirl Drum, and a 24-hour delayed start.
  
• BEKO WDW 85120 B3. This model's key feature is its drying mode for up to 5 kg of laundry. This is a useful addition to its 8 kg capacity, 1200 rpm rapid spin, 16 programs, 24-hour delayed start, and Hi-Tech ceramic heating element. However, it does have a few drawbacks: a low energy efficiency rating (B) and a wide, 54 cm deep body.
  

It's important to understand that a direct-drive motor isn't the defining characteristic when choosing a washing machine. It's better to pay attention to the brand, power, useful features, and warranty period. A beltless drive will eliminate unpleasant surprises and make the machine easier to use.

   

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