(1) When cutting 16 threaded steel bars under the same load, the 125-inch angle grinder only needs 2 seconds to cut one cut, while the brushed product needs 5-10 seconds (see the cutting table and video, and let the customer cooperate to do the cutting experiment in the customer's workshop, the effect is more intuitive)

 

(2) It is like a 10-ton truck, and a brush is like a 2-ton truck. In operation, no matter when the grinding disc is cutting or grinding, if it encounters a heavy load, the resistance will make it much more difficult to slow down a 10-ton truck than a 2-ton truck. The speed will be smaller, which also means that the cutting and grinding speeds are faster.

 

(3) The high efficiency comes from the small speed drop of brushless angle grinders when the starting and ending no-load speeds of brushless and brushless angle grinders are similar. The working efficiency of brushless angle grinders when in use is generally 50%-60%, while the working efficiency of brushless angle grinders is about 80%-90%. Take traditional brand machines as an example: ① The rated no-load speed of Metabo 100 angle grinders is generally 11000r/min. When the load is 1000W, the speed of traditional angle grinders is generally around 4000 to 5000r/min. 

② The no-load speed of Wicker and Dayou 100 angle grinders is 12000r/min. When the load is 1000W, the speed of traditional angle grinders generally drops to about ﹤6500r/min. However, the no-load speed of the Ralun brushless angle grinder is 12000r/min. When the load is 1000W, the speed remains at about 12000r/min. The super motor characteristics ensure that there is almost no speed drop under the rated working load state, ensuring the optimal working efficiency of the machine. For the same 10,000-rpm machine, when workers are grinding under load, the optimal efficiency point of a brushed machine is around 5,500 rpm, and the optimal efficiency point of a similar machine is around 8,000 rpm. Under the same load, the speed of a brushless machine is more than 2,000 rpm higher than that of a brushed machine, and the relative grinding efficiency will increase accordingly. The same principle applies to cutting.

 

However, if the load is very light and there is no pressure on the two-ton truck, the cutting and grinding efficiency will be similar. If the customer is trying it for the first time, it is recommended that the customer choose a workpiece with a relatively large working load to better reflect the advantages of brushless.

 

When grinding under load, if you encounter a heavy-load workpiece, the brushed machine will not reach a certain speed and torque, resulting in dry grinding. During dry grinding, the workpiece itself does not grind off enough iron powder, and the grinding disc is constantly worn out. The brushless machine has a high speed and high torque when grinding under load. According to the principle of inertia, the friction points of the brushed machine can be passed by the brushless machine, reducing the wear of consumables.

 

 

Since brushless machines do not have carbon brushes, their theoretical lifespan is very long. In addition, we have strengthened the strength of our mechanical parts according to the characteristics of the motor's electronic control. Gears (military tight-fitting gears), housings, bearings (Japan's NSK top bearings, Germany's ina needle bearings), output shafts, housings, and grease (Spain's imported gear oil) are all matched to improve performance, so their lifespan is much longer than that of brushed machines. From a publicity perspective, the continuous load working time of 100 and 125 models is 400 hours, 150 is 600 hours, and 180 and 230 are 1000 hours. Under the same working conditions, the average lifespan of brushless machines is 2-3 times that of brushed machines ( compared with international first-line brands such as Bose, Makita, DeWalt, and Metabo)

Start the machine, The voltage slowly increases from zero to the rated voltage, and Start-up torque is reduced for better control, achieving smooth and smooth starting process without impact.

After the power is suddenly cut off during operation, the motor will not restart to avoid accidents.

 

 

 

When the machine is overloaded, the current will be cut off immediately to protect the machine.

 

 

 

When the voltage is lower than the set value, the machine will be stopped to prevent the core components from burning out.

When the internal temperature of the machine is too high, the machine will stop to better protect electronic components.

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