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Cons and Pros of brushless motor and brushed motor

At present, The airless paint sprayers can have one of two difference types of motor: brushed and brushless.
Until recently the most commonly seen motor is the brushed type., which work by having small contact brushes
inside the motor that cause it to spin. They cannot be adjusted or tuned. However, there are also non fixed
motors available that have the advantage that you can adjust and replace the brushes to get the best results.
Brushed motors have the advantage of being widely available and relatively cheap. They are equipped all most all
kinds of airless paint sprayers with piston pump and diagram pump.
Now the brushless motors are becoming more popular amongs airless paint sprayers. Since they offers several
advantages over brushed DC motors, including more torque per watt (increased efficiency), increased reliability,
reduced noise, longer lifetime (no brush and commutator erosion), elimination of ionizing sparks from the
commutator, and overall reduction of electromagnetic interference.
The following is the table for cons and pros of these two type of motor:

Brushed DC Motor

  • Brush PMDC motor driving paint sprayer

Pros:

* Two wire control

* Rebuild new brush for extended life

* Low cost of construction

* Simple and inexpensive control

* No controller is required for fixed speeds

* Operates in extreme environments due to lack of electronics

Cons:

* Periodic maintenance is required

* Speed/torque is moderately flat. At higher speeds, brush friction increases, thus reducing useful torque

* Poor heat dissipation due to internal rotor construction

* Higher rotor inertia limits the dynamic characteristics

* Lower speed range due to mechanical limitations on the brushes

* Brush arcing will generate noise causing electrical magnetic interference (EMI)

 

Brushless DC Motor

  • Brushless motor driveing airless sprayer

Pros:

* Electronic commutation based on position sensors vs mechanical switch for brushed

* Less maintenance due to absence of brushes

* Speed/Torque- flat, enables operation at all speeds with rated load

* High efficiency, no voltage drop across brushes

* High output power to size ratio.

* Reduced size due to superior thermal characteristics. Because the windings are connected to the case

the heat disipation is better

* Higher speed range – no mechanical limitation imposed by brushes/commutator

* Low electric noise generation (EMI)

Cons:

* Higher cost of construction

* Control is complex and expensive

* Electric controller(ESC) is required to keep the motor running which is sometimes more expensive than the motor.


         
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FAQ regarding our business

Q1: What's your MOQ minimum order quantity for formal order?

A: Our MOQ is 10-100 units depends on the model. For small pump or spray guns , the MOQ is 100. and for large capacity pump, the MOQ could be 10. We can accept 1 or 2 units for sample testing order.

Q2: What's your payment terms?

A: We could accept L/C, T/T and Paypal or Western Union, also accept the payment against B/L copy . We can offer credit payment term for our long year cooperated representatives.

Q3: What is the lead time?

A: Sample order: 3-5days, mass production 20-40 days for the formal order.

Q4: Can we put our logo on your products? Is there extra charge for it?

A: Yes, we accept the OEM order based on the order quantity. The color box package need extra cost for less container order.

Q5: What's your warranty?

A: our warranty is 12months limited warranty except the easily worn parts. and for the motor we offer 2 years warranty.

Q6. Which port do you ship your machines?

A: We ship from Ningbo port China. for the FOB price, we will bear the local freight charge and the forwarder fee / customs fee, and all the shipping cost / insurance cost / forwarder cost at destination port / import duty tax ... all will be beared by the buyer (or importer).

Q7. how can i buy your products?

A: if you're final user, please leave your mobile phone number to us, and we will ask our distributor / dealer to call you directly. if you want to be our distributor or representative, welcome to contact us by email or whatsapp. we can talk more details one by one, we're sure you would be satisfied with our quality / service and price.