What is the best motor for the circular saw?
Circular from a motor from a washing machine
Here it depends on the power of the machine. Belt-driven motors are best, so that the revolutions are transferred directly to the saw. If you plan to install a 35 cm disc on the circular saw, you will need 1 kW of power to start it up. Saw, the diameter of which will be 17 cm, working from 500 watts. This means that it is quite suitable engines from old washing machines Sibir or Oka. The only thing to do is to adjust the engine speed, because unstable rotation will cause the saw to start “tearing” the wood.
For the number of revolutions of the motor in the washing machine is responsible tachodactor, which controls the control module. But since it is not possible to connect the module to the circular saw, it is recommended to install a voltage regulator.
Connecting the electric motor is considered an important working step, and if you do not get it right, then you can not expect normal work from the circulator.
Ergonomics of the circular saw
For household needs, a manual circular saw is most often used, which means that the question of ergonomics must be given special attention. In this case, to give any unambiguous recommendations will not work, because everyone has his own concept of comfort.
About 10% of people on Earth are left-handed and manufacturers necessarily take this into account when producing mirror models of tools.
The shape and location of the handle
If the back handle is more or less standard, there are at least three versions of front handle: straight, mushroom-shaped and claw-shaped. The first is better suited to “push” work, the second is more convenient to guide the saw from the side, and the third is universal, but larger in size than the mushroom-shaped saw.
No slipping in the hands, better control of the work process.
Depends on the design features of each tool, so it is better to evaluate it with your own eyes before buying.
Drainage of sawdust
Executed by blowing sawdust out of the work area or by connecting an industrial vacuum cleaner to the saw.
To keep the wire from kinking at least in the vicinity of the saw, the cable is led through a long and stiff grommet from the body of the saw.
Carbon brushes replacement
Not often needed, but in any case it is better if there is a special window for this operation. In addition, the brushes can be self-switching. when the graphite rod is worn down, the chain breaks, and there may be an indication of the state of the brushes.
What is the best motor for the circular saw
2.2 kW asynchronous motor, AIR, single-phase, 220V 3000 rpm suitable for circular saw for 2 knives? At the moment there is a three-phase at 380, I think also at 3000 rpm, through the capacitors, but with our voltage is weak he.
It’s very good. I have the same motor, only three-phase, with a delta connection. Circular saw picks up 63 mm with virtually no resistance. When using three-phase motors, it is mandatory to switch the windings to a delta circuit, otherwise there will be no power
Will fit and even very. I have the same one but it is three phase and delta connected. The circular picks up 63 mm without resistance practically. When using three-phase motors must switch the windings to a “delta”, otherwise there will be no power
Thanks!I’ll ask an electrician to look at the connection of the windings.But one more question: if you connect a three-phase circular saw this way, one winding would still be out of order?
Added after 4 minutes Seller engine (2.2 kW) strongly praised him, grt circular saw will be like a beast pulls and speed suitable in principle and for sawing and lining, and if necessary, and pulleys can be adjusted
Thanks!I’ll ask an electrician to look at the connection of the windings.Again, the question. with this connection at the three-phase unit one winding still does not work?
Added after 4 minutes motor seller (2,2 kW) praises it much, he says circular saw will be like a beast pulls and rpm suitable in principle for sawing and filing, and if necessary, and pulleys can be adjusted
In single-phase motor also has a capacity which starts the engine, so there is a starting winding, and three-phase motor can be made to work with all windings by including additional winding through a capacitor, type MBG, and their subs, which are designed for 400 volts or more.,The terminal strip must explain how the motor is connected, whether it is on a star or a tricycle.
What is the best motor to put on the circular saw
2.2 kW asynchronous motor, AIR, single-phase, 220V 3000 rpm is suitable for fillet circular saw for 2 knives? at the moment is a 3-phase 380, I think also 3000 rpm, through the capacitors, but our voltage is weak he.
It is fine and very fine. I have the same one but three phase and delta switch. The circular saw picks up 63 mm with almost no resistance. When using three-phase motors must switch the windings to a “delta” otherwise there will be no power
It is fine and very fine. I have the same motor, only three-phase is included in the “delta”. The circular picks up 63 mm with practically no resistance. If three-phase motors are used, the windings must be switched to delta or no power will be available
Thank you!I will ask an electrician to look at the winding connection.Again, the question. with such a connection, a three-phase machine, one winding still does not work?
Added after 4 minutes Seller engine (2.2 kW) strongly praises him, he said circular saw will be like a beast pulls and rpm suitable in principle for sawing and filing, and if necessary, and pulleys can be adjusted
Thank you!ask an electrician look at the connection of the windings.Again, the question. with this connection in the three-phase unit, one winding is still not working?
Added after 4 minutes Seller engine (2.2 kW) strongly praised him, he said circular saw will be a beast pulls and rpm suitable in principle and for sawing and boring, and if necessary, and pulleys can be adjusted
In a single-phase motor is also available capacity, which runs the engine, so there is a starting winding, and three-phase motor can be made to work with all windings by including additional winding through the capacitor, type MBG, and their subs, which are designed for 400 volts or more.,On the terminal strip there must be an explanation as a connected motor, on the star or a tricycle.
What motor is better to put on the circular saw
Group: VIP Messages: 19,822 Registered: 23-June 09 From: Village of Gadukino. User #: 10,657
Are there specialist electricians? I need advice. The bottom line is. I bought a circular saw, and it’s a 380 asynchronous motor. The motor is unclear what power. Shaft 30mm, back swirler for cooling. Showed the photo to the motor dealer at the market, says. it’s a “marine engine”. That is, some kind of reinforced, especially good. But it is 380! And I can’t get it plugged in. We do not have 380 here, I can not spend. That leaves four ways: 1.Convert to 220 (twice the power loss, I don’t know. Will it pull, plus the price of capacitors. not a sweet price)2. Buy frequency converter. Price. At least 11 grand, plus. I do not know what is the power of the motor. The plate is not a damn thing, how to determine. do not know.3. Buy a 220 motor, but again the price. such, for 2 kw (no smaller), costs from 12 thousand, and if the network is unstable. May not go at all. They say that modern engines (solid China!) Very finicky and unreliable4. A salesman offered me a motor converted to direct current through a diode bridge. Brush. 1 kw motor. Like. It’s not really a 1 watt, but at least 2.5, because the DC power goes up. But this is a seller, he needs to sell, maybe it’s all nonsense. I tried to find information. never could. So there you go. Any advice?? What is better to do?
Found the plate after all. 1.5 kw. 1430 rpm. Still leaning towards the brush motor if it really is more powerful than the equivalent. However. I couldn’t find anything about it on the net. Are direct current motors more powerful than asynchronous motors?? I would have used a regular 220, if it was affordable.
Group: Visitors Message: 1,740 Registered: 8-October 13 User #: 60,512
Hello. As far as I remember before the price of engines were 1 KW-1 thousand. For a two-kilowatt unit.12,000 Where are those prices? ? Look at the flea markets may be cheaper, only the diameter of the shaft to fit. Well, or there are offices for rewinding motors: rewind to 220, or maybe they have. of picking something up. Rewound a motor on an 8kilowatt refrigerator once. It’s been running for 7 years without any problems.
Group: VIP Messages: 10,205 Registered: 24-October 09 User #: 12,740
So the subject is familiar. At one time, on the cusp of a battle to get a good look at the country house, this important question came up. Eugene, you just have one saw blade, no planer shaft?Now my circular saw is idle, I can not remember exactly how much motor. But 1.5 kW seems to be too small for the conversion to 220 V.
I think I got myself a 4kw motor with condensers. One starter, one working. And there was a loss of power. The truth then learned not to be cheeky and it went. Then there was a time when a friend of an electrician at the cottage took out a separate 380 V for us. It was a song. True, I had to use the machine already so abundantly and heavily as in earlier years. That year the power changed on the dacha, and the new board cut a piece of cable for 380V. It is not good to have such a surplus in a personal household.
A friend of mine drove a 2.5 kW angle grinder on 220 V. But there’s a problem there, too. An acquaintance of mine was a bit overzealous in the operation of his machine. Brushes heated up and melted their seat, thereby removing the angle grinder from the work cycle.
Making a circular saw with their own hands, it is recommended to provide opportunities for its repair and maintenance. Any movable part must have a convenient access for lubrication. Beginning all installation work, you should prepare detailed drawings and diagrams, make the appropriate calculations. Makeshift circular saw has a different size and can easily fit in the back room.
Circular saw made from an angle grinder or circular saw
If there is no need to work with massive wooden workpieces, you can make a small stationary saw from a ready-made power tool.
The handheld circular saw is a finished and fairly safe tool.
Handheld circular saw on rails
There are two options for stationary use:
- You can simply clamp the saw to the bottom of the table so that the blade protrudes over the surface to the desired height. The difficulty is that the switch will not be accessible. Therefore it must be locked and the starter mechanism must be redundant or the switch must be moved out of the circular saw housing. This is efficient, but not safe.
- Another option is a sliding frame. A base is mounted from two parallel metal rails. A frame with rollers and a circular saw mounted on it.
Popular: How to choose a circular saw for home. analysis of different models
The workpiece is stationary, and the circular saw, moving along the guides on the carriage, makes cuts at the right angle. This uncomplicated to make machine can actually work wonders with small workpieces.
How to use a circular saw as a circular saw you can see in this video
How to make a home-made circular saw?
What the circular saw could easily saw logs of huge size, you need to equip it with a really massive electric drive. In addition, for this purpose, a belt drive, a shaft and a motor with the highest traction force are installed on it. All self-made circular saws consist of 2 parts: upper and lower.
The lower part always houses various electrical equipment, specifically:
Circular saw design.
In the upper part of the circular saw is installed:
Large homemade circular saw
In the manufacture of the frame for the upper part of the saw is best to use the metal angle width of 25 mm. In this case, the rectangle, which will be the frame of the upper part of the homemade circular saw, should have the dimensions 600×400 mm. Further, in the corners of this quadrilateral four pipes are welded, which diameter should be 17 mm and the height should be approximately 2,2 m.
The frame must then be supported by two angles onto which the bearings will later be fixed. The distance between the two brackets depends directly on the length of the shaft. Clips are generally used to fix the bearings. It is best if the bearings, installed on the homemade circular saw, will be of closed type. This way you do not have to worry about wood shavings entering between the balls, rings and cage. Do not forget also to cut a thread on the very end of the shaft, so that later you can install a cutting disk on it.
The lower part of the circular saw must be made much more massive, which will give it the necessary stability and reliability. Therefore, when making the bottom frame, you need to take an angle of at least 40 mm in width. Next, across the frame you need to fix two additional angles, which will later hold the motor of self-made circular saw. The most suitable motor for the circular saw, made by your own hands, is an asynchronous three-phase motor with a power of not less than 1.5 kW and with 1500 rpm. The pulley handle should be big enough, about 80 mm, and should be put directly on the shaft itself. In addition, you need to weld a fairly small metal plate to the frame, which will be placed starter. Large 2.2 m long pipes, which were previously welded by you in the corners of the frame, are necessary for quality tensioning of the belt, so that the metal thumbscrews under the thin pipes.
Electric motor for a circular saw 220V 4kW 3000rpm.
Measurement with a mechanical tachometer requires direct contact with the surface of the object.
Now, you need to make a pipe support, both the top and bottom parts of the saw, and then tighten the belt with the metal winglets. Starting the motor in this circular saw model with your own hands is made with the help of starting capacitors. To overload the motor and increase its torque, you can use a 220/36 400W transformer.
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Choice of motor for circular saw. : 6 Комментарии и мнения владельцев
A three-phase motor on one phase gives out less than half the rated power. That means a 3kw motor would give 1-1.5kw. I think 3kW will not be enough. At 380 volts would be just fine, but for 220 it is better to take a bigger one.
Yeah, for a fifty you need a more powerful motor. I have a circular saw with a 900W motor, well, very weak. Even a forty you can barely saw, especially if the wood is raw.
I have been working for a long time: el. A 4 kw motor for a 50 mm board is fine. but less is already a mate. (380 V and 3000 rpm). saw with a diameter of no more than 250 mm).
3000 rpm, 3 kW is enough to cut a 50mm board. At 380 volts with no problem. 220 volt through the starting capacitor, you can use an electrolytic capacitor or a working capacitor at the rate of 70 uF per 1 kW. The main condition, a good circular wheel and a pulley on the zl. The diameter of the motor is the same as the shaft or slightly larger. http://fazadom.com
-I would like to know the power on the motor shaft T. е. the force required to rotate without overheating the motor do not guess but calculate. I have a long time engaged in designing gears of machinery and machine parts. I would like to refresh not by trial and error. Reconfigured E.Д, 2.2 qt warms up after a short operating time. Universal shaft with replaceable knives for planing the surface of boards and cutting edges. How to determine the power on the motor shaft is a mystery.
Electric circular saw motor
Let’s choose the electric motor for the circular saw, taking into account the established requirements.
Linear speed at the tip of the circle, which any circular saw blade can endure, is 6575 (m/min). The diameter of the saw blade used is 180 (mm).
Find the speed of the motor shaft from the formula:
V. linear velocity of pointω. angular velocity R. radius (distance from point to center)
Knowing the height of the axis of rotation, we choose the electric motor for the circular saw from the model range.
We chose the asynchronous motor AIRE 71 C4.
This type of motor is used as a driving mechanism in the equipment for various purposes. Its advantages are that if you change the phase, you can change the direction of rotation of the shaft. This is very important in the machine design.
The condition of operation of the electric motor:
Wrench, B. 220 V _ frequency, Hz. 50 _ height of rotation axis, mm. 71 _ mass, kg. 13 _ capacity, kW. 0,75 _ rotation frequency, rpm. 1500% RPM. 71 Rated operation mode. S1 according to GOST 183-74 _insulation class. F _ cos φ. 0,9 _voltage limit deviation, %. 5 to 10 _ current frequency limit deviation %. ±2,5
This model of the electric motor for circular saw has a low cost, provides good reliability and performance, easy to perform.
The figure shows overall, mounting and connection dimensions of АИРЕ 71
The diameter of the driving pulley chosen by the transmission ratio, which is defined as the ratio of engine speed to the operating speed of the saw blade, and it should be taken into account that:
minimum diameter of the pulley, mm. 50 minimum angle of belt girth by the pulley, not less°. 90
Let’s assemble single-phase motor connection diagram, using magnetic starter, control coil, “START” and “STOP” buttons.
Choose a starter from the standard range in terms of current, so that its contact group can withstand the applied load from a running engine.
From the formula: P = IU we find the amperage, where:
P. electric current powerI. amperageU. voltage
We choose the control coil for 220 (V).
Let’s put all this into one plastic case and fix it on the circular saw bed.