The circular saw has a universal motor in it, and this type of motor is extremely noisy. Something like a radial arm saw or a table saw uses an induction motor instead. Induction motors run only on AC power and do not use brushes – that is the main reason they are so quiet. If we compare this with a universal motor with 3/4 horsepower output, we see a speed increase of about 15,000 RPM, a size reduction to about 6″ long x 3″ diameter and a weight reduction of greater than 85%. The weight difference is huge – a circular saw would be almost unusable if it contained an induction motor.
An interesting experiment would be to run your skil type saw on dc, and see what noise remains. As someone said in another post running the saw on rectified and filtered ac will give too much power to the motor. You need something less than 100 volts dc to run the saw at the same power level.
circular saw quiet Related Question:
Which is quietest circular saw?
Average noise level: 91 dB If you need a saw with miminal noise at a lower price, the Bosch Professional 12 V-26 is a solid option. With a sound level of 91 dB, it won’t cause extreme noise problems, and its price point is much more affordable than most circular saws.
Why is circular saw so loud?
A circular saw makes more noise because of the type of motor it uses. The circular saw has a universal motor in it, and this type of motor is extremely noisy. Universal motors are called “universal” because they are happy to run either off of AC or DC electric power. Circular saws use brush-type universal motors.
How noisy is a circular saw?
Noise levels generated by circular saws in operation have been reported to vary from 80dB(A) up to 120dB(A). Not only can the cutting noise be extreme, there is also the additional factor that, even when idling, circular saws can produce noise levels up to 95dB(A).
How can I make my saw quieter?
Use a Blade Stabilizer Using a blade stabilizer can quiet your table saw blade by another 2 decibels. (Here is a Freud 3-1/2-Inch Blade Stabilizer with 5/8-Inch Arbor for 7-Inch Saws or Larger from Amazon). It can help stabilize the blade of your table saw, reducing the amount of vibration, and therefore noise.
Does Bosch make a circular saw?
Circular Saws – Saw Kits | Bosch.
Are Makita circular saws good?
Best Hypoid Circular Saw Makita, a reliable name in power tools, is one of the few manufacturers offering hypoid saws. With its lightweight magnesium construction, the Makita 5377-MG Circular Saw weighs only 13 pounds, light for a geared saw.
How many decibels is too loud?
Sound is measured in decibels (dB). A whisper is about 30 dB, normal conversation is about 60 dB, and a motorcycle engine running is about 95 dB. Noise above 70 dB over a prolonged period of time may start to damage your hearing. Loud noise above 120 dB can cause immediate harm to your ears.
Why are motors so noisy?
The most likely mechanical causes of noise are worn bearings, moving parts rubbing together or colliding, a bent shaft, and a loose or missing screw or other minor part. The type of noise may well indicate the problem, and the relevant part of the motor can be inspected and repaired if necessary.
Why are power tools so noisy?
Power tools are so loud because they have noisy fans that keep them from overheating and metal gears that rotate and make the motor sound louder. Dull drill bits, unlubricated gears, failing motors, and higher RPMs will make a power tool sound much louder than it should.
Are jigsaws loud?
Jigsaws are generally going to produce between 80 and 90 decibels of noise. (80 decibels is the sound of an alarm clock, 90 decibels-a lawnmower) Without a load.
What does a saw blade sound like?
Saw blades are like tuning forks, xylophone keys, bells or any other tensioned piece of metal. They all have a particular frequency at which they resonate. When you hit that particular frequency they make noise.
What is worm drive circular saw?
Worm drive saws have the motor at the rear of the power tool, with gears oriented at 45° angles. The blade speed is slower but the torque is improved. A heavier and longer saw, a wormdrive model will usually have the blade on the left side. Worm Drive Circular Saws Torque Durability.
Where are Bosch circular saws made?
Bosch is a German power tool manufacturer, and some of their tools and products are still manufactured in Germany, as well as in Switzerland. However, many of their components are now manufactured in Malaysia, Mexico, Taiwan, and China.
Are cordless circular saws worth it?
It is really worth buying a cordless circular saw by spending 60$-150$. Because it can be used without a power cord and power supply, that will be easy to use outdoor and portable. Cordless saws are powered by Li-Ion batteries, and they can use about 30 mins continuously.
What should I look for when buying a circular saw?
Features that help you work effectively with a circular saw include accurate cutline markers, good blade visibility, smooth guard retraction, and a flat shoe set parallel to the blade. The best cutline markers line up exactly with the kerf cut by the saw. You want a notch no wider than a thin-kerf saw blade.
