Otis Singleton
Electric brakes are a safety feature incorporated into many modern power tools, including circular saws, drills, and miter saws. They are designed to prevent injuries resulting from kickback or skin-to-blade contact. By reversing the electrical flow, the motor is thrown into reverse, creating friction that stops the rotating blade. This prevents the blade from continuing to spin after a cut, reducing the risk of accidents. The SKIL SIDEWINDER™ is an example of a Skilsaw that includes an electric brake, enhancing job site productivity and safety. While electric brakes offer significant advantages, they can wear out over time, requiring servicing or replacement.
| Characteristics | Values |
|---|---|
| Type | Electric convenience brake |
| Function | Quickly stops the blade so you're ready for the next cut |
| Mechanism | Reverses the electrical flow to throw the motor into reverse, creating friction to stop the rotating blade |
| Safety | Prevents injuries from kickback or skin-to-blade contact, and damage to the cord or floor |
| Weight | 10.06 lb |
| Length | 12.5 inches |
| Width | 9.75 inches |
| Height | 9 inches |
| Motor | 15 Amp Dual-Field |
| Bevel capacity | 56 degrees |
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What You'll Learn
How does an electric brake work?
Electric brakes are a safety feature incorporated into many modern power tools, such as circular saws, miter saws, and drills. They are also used in vehicles, particularly trailers.
Electric Brakes in Power Tools
Electric brakes in power tools, such as the Skilsaw, work by reversing the electrical flow to the motor, which throws the motor into reverse. This creates friction, which is needed to stop the rotating blade. As a result, the saw blade stops much more quickly than it would without the electric brake. This feature prevents injuries resulting from kickback or skin-to-blade contact. It also prevents damage to the cord or the user.
Electric Brakes in Trailers
Electric trailer brakes work by activating electromagnetic brake drums to create attrition and slow the trailer down. These brakes require an electric connection to the tow vehicle to function and are regulated by a brake control unit. The brake controller uses electricity from the tow vehicle to apply a specific amount of power to the trailer brakes. It uses electrical circuits and trailer gain settings to regulate the amount of braking power.
Newer proportional electric brake controllers measure the changing momentum or inertia of the moving car via an accelerometer. They send the precise amount of voltage to the trailer brakes to ensure that the speed of the trailer matches that of the tow vehicle, resulting in a smoother braking experience.
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$149.99
Why is an electric brake important?
An electric brake is a safety feature incorporated into many modern power tools, such as circular saws, drills, and miter saws. Manufacturers implement this feature into tools with spinning blades or cutters. An electric brake is commonly used in corded tools such as circular saws, miter saws, routers, bandsaws, angle grinders, and table saws. These mechanisms are designed to prevent injuries resulting from things like kickback or skin-to-blade contact.
Electric brakes are important because they stop the blade in about 2 seconds, whereas a blade can continue spinning for 10 seconds or more without an electric brake. This prevents damage to the blade, wood floor, cord, or even the user's fingers or toes. It is easy for a scrap of wood or some obstruction to prevent the blade guard from falling back in place after a cut, and an electric brake prevents this from becoming a dangerous situation.
Electric brakes work by reversing the electrical flow, which throws the motor into reverse long enough to provide the friction needed to stop the rotating blade. As a result, the saw blade stops much more quickly than it otherwise would on its own. This prevents the potential damage a blade spinning for 10-12 seconds after the cut could do, especially with larger, heavier saws.
Electric brakes can also be found in vehicles, where they are becoming increasingly common. Electric braking systems use electrical power to stop a vehicle, unlike hydraulic brake systems, which use a fluid to transfer braking force from the pedal to the wheel brakes. Electric brake systems use an electric motor to generate the braking force, and this motor is also used for propulsion in electric vehicles and plug-in hybrids. Electric braking systems can include additional safety features, such as automatic emergency braking and collision avoidance, which can be very advantageous.
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Electric brake maintenance
An electric brake is a safety feature incorporated into many modern power tools, such as circular saws, drills, and miter saws. Electric brakes are designed to prevent injuries resulting from kickback or skin-to-blade contact. They work by reversing the flow of electricity in the motor when the trigger or switch is released, which decelerates the motor and stops the blade much more quickly than it otherwise would. This can prevent damage to the cord, the floor, or the user.
The SKIL SIDEWINDER™ is the only Skilsaw with an electric brake and all-magnesium housing. The electric brake quickly stops the blade so you can quickly move on to your next cut, and the magnesium motor housing keeps the motor cool to ensure powerful performance and durability.
While electrical brakes don’t have the same wear as mechanical systems, they can wear out over time due to brushes and other factors. To maintain your electric brake, it’s important to monitor how long the blade spins after the trigger is released. If the brake takes longer than usual to stop the blade, it may be time to service or replace the tool.
In addition to electric brakes, there are other safety features to look out for when purchasing a saw, such as auto lock-on switches, auto lock-off switches, blade guards, and shields. However, it's important to remember that even with these safety features, careful use of the tool is still essential to staying safe. The brake only serves as a backstop to careful use and should not be relied upon as the first line of defense.
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Electric brake safety
Electric brakes are a safety feature incorporated into many modern power tools, such as circular saws, drills, and miter saws. They are designed to prevent injuries resulting from kickback or skin-to-blade contact. By reversing the electrical flow, the motor is thrown into reverse, creating friction that stops the rotating blade. This prevents the blade from continuing to spin after a cut, reducing the risk of damage or injury.
The SKIL SIDEWINDER™ is an example of a circular saw that incorporates an electric brake. Its electric brake quickly stops the blade, increasing productivity and safety. This feature is particularly important in larger, heavier saws, where a spinning blade can cause significant damage or injury if it is not stopped quickly.
While electric brakes offer improved safety, they are not without their disadvantages. They can wear out over time due to brushes and may need servicing or replacement if they cease to stop the blade quickly. Additionally, they wear the brushes prematurely compared to non-brake tools.
To ensure safety when using power tools with electric brakes, it is important to maintain a careful mindset and not solely rely on the brake as the first line of defense. Regular monitoring of the brake's performance is necessary, and if it is not stopping the blade quickly, servicing or replacement of the tool may be required.
Overall, electric brakes are an important safety feature in power tools, particularly those with spinning blades. They help prevent injuries and damage by quickly stopping the blade through the use of electrical friction. However, proper maintenance and monitoring of the brake's performance are crucial to ensure its effectiveness in enhancing safety.
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Electric brake history
Electric brakes, also known as electric motor brakes, are a safety feature incorporated into many modern power tools, such as circular saws, drills, and miter saws. The first use of an electric brake on a tool was that of the miter saw, invented in 1964 by Ed Niehaus, a tool engineer for Rockwell Tools. Since then, electric brakes have become prevalent in various power tools, including circular saws, routers, bandsaws, angle grinders, and table saws. These tools often feature spinning blades or cutters, and the electric brake helps prevent injuries from kickback or skin-to-blade contact.
The mechanism behind electric brakes is quite universal across different tools. When the trigger or switch is released, the polarity of the electricity running to the motor's brushes is reversed, causing the motor to decelerate and stop much quicker than it would without the brake. This rapid stoppage of the blade helps prevent potential damage or injury that could occur if the blade continued spinning after the cut.
The electric brake is particularly useful in larger, heavier saws, where a spinning blade could pose a significant danger. It is also beneficial in preventing damage to the power cord, which could occur if the saw jolted backward when set down. In addition to corded tools, electric brakes have also been incorporated into cordless tools, with the first instance being the cordless drill invented by Makita in 1969.
The history of braking systems goes beyond just electric brakes. Mechanical drum brakes were invented by Louis Renault, while Malcolm Lockheed conceptualized hydraulic brakes. Additionally, the power-assisted brake systems found in modern cars and trucks can be traced back to Pascal's law of hydraulics, which explains how fluids in motion can increase force.
Overall, the development and incorporation of electric brakes into power tools have significantly enhanced safety and productivity for users. The technology continues to evolve, ensuring that tools are safer and more efficient for various applications.
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Frequently asked questions
An electric motor brake, commonly referred to as an electric brake, is a safety feature incorporated into many modern power tools with spinning blades or cutters, such as circular saws, miter saws, and angle grinders.
An electric brake works by reversing the electrical flow, which throws the motor into reverse and provides the friction needed to stop the rotating blade. This prevents the saw from jolting backward and reduces the risk of injury to the operator.
An electric brake is an important safety feature that can prevent injuries resulting from kickback or skin-to-blade contact. It also helps to protect the tool and surrounding area from damage.
The SKIL SIDEWINDER™ is the only Skilsaw that currently offers an electric brake feature, along with all-magnesium housing and a powerful Dual-Field™ Motor.
If your Skilsaw's electric brake is not disengaging, it could be due to a faulty trigger or switch. You can try disconnecting the battery and reconnecting it, or contact customer support for further troubleshooting and guidance.
