The inertia chain brake is a very important safety feature of the modern chain saw. Since kickback occurs suddenly and with great force most people cannot react fast enough to activate the chain brake manually. The chainsaw brake handle, brake spring, and band are designed to be of the perfect weight and tension to activate at kickback by the rapid movement of the saw.
Chain Brake: Located on the top handle of the chainsaw, the chain brake is used to stop the chainsaw chain from rotating around the bar. Always start your chainsaw with the chain brake engaged so the chain does not move. The STIHL Quickstop® chain brake is designed to stop the rotation of the chain if activated by the operator’s hand or by inertia if the saw kicks back with sufficient force.
Depth gauges filed too low make the chain grab at the wood and may negate the benefits offered by safety chain. Full safety chains have extra bumper links between the cutting links, maintaining nearly full depth gauge height along the full extent of the chain and reducing the risk of kickback to very low levels. Modern “Professional” chains offer far higher cutting performance than full safety chain, and offset their increased risk with an assumption of a much higher degree of operator competence.
how chainsaw brake works Related Question:
How does a chainsaw chain brake work?
The chain brake is activated when the front hand guard, located near the saw’s upper handle, moves rapidly toward the chainsaw operator. When engaged, the chain brake stops the chain from rotating around the saw’s guide bar.
What happens if you run a chainsaw with the brake on?
Running a chainsaw with the brake on can be dangerous for you and anyone in your vicinity. The chainsaw will not cut, but it still creates sparks that can cause fires or startle nearby pets. It also doesn’t allow the saw to cool down enough which increases the likelihood of overheating and breaking down.
How does chainsaw kickback brake work?
In the event of sudden or rapid movement of the chainsaw, such as when kickback occurs, the brake is designed to engage automatically through the force of inertia. Since kickback occurs suddenly and with great force most people cannot react fast enough to activate the chain brake manually.
Can you start a chainsaw without brake?
A good-running chainsaw will start with the chain brake on or off; this means if your chainsaw is in perfect condition, it will start with or without the brake on. You can throttle it up a little, but the chain won’t move if the brake is engaged.
When did chainsaws get brakes?
When Did Chainsaws Get Brakes? In 1972, a manual chain brake bar was included with Stihl chainsaws which allowed the user to stop the chain from spinning when the bar was pressed. Also, in 1973 the Husqvarna company invented the automatic chain break with stops the chain immediately after kickback.
Do you start a Stihl chainsaw with the brake on?
On a gas-powered Stihl chainsaw, the chain brake is located just in front of the handlebar. All you have to do to activate it is push it forward. This will keep the chain locked as a safety precaution while you are starting the chainsaw, and until you are ready to use the tool.
Why do chainsaw chain dull so quickly?
Is the wood that you’re cutting with the chainsaw particularly dirty? Many chainsaw enthusiasts have noted that their blades dull faster when they’re cutting muddy wood. If the logs that you’re cutting up are muddy, then perhaps that is the sole reason why your blade is dulling too fast.
Should you run a chainsaw at full throttle?
Engine Protection Generally, two-stroke chainsaw engines are built to conveniently run at full throttle without an engine breakdown. Therefore, running at any throttle speed below the full throttle is not advised.
How often does chainsaw kickback happen?
Kickback can happen in the blink of an eye too. In fact, about 30,000 chainsaw-related injuries happen each year, with chainsaw kickback accidents being the most common hazard.
What is the most common chainsaw injury?
The most common hazards associated with chainsaws are injuries caused by kickback, pushback, and pull-in. Kickback is the most common and poses the greatest hazard. Kickback occurs when the rotating chain is stopped suddenly by contact with a more solid area throwing the saw rapidly backward toward the operator.
Why is my chainsaw hard to pull and kicks back?
If your chainsaw is hard to pull, here are some common causes: The pully system is snagged or stuck. The starter assembly is stuck or sticky. The housing may be damaged.
When should a chain brake be used?
The chain brake has two purposes. First, it can be used to secure the chain when changing position, moving between cuts or starting a cold saw, which requires a partly open throttle. This would otherwise lead to uncontrolled chain movement, a major hazard in older saws.
How does the chain brake work on a Stihl chainsaw?
The STIHL Quickstop® chain brake is designed to stop the rotation of the chain if activated by the operator’s hand or by inertia if the saw kicks back with sufficient force. In some working positions, the STIHL Quickstop® chain brake can be activated by inertia, stopping the chain within fractions of a second.
Do all chainsaws have a chain brake?
All chainsaws must have chain brakes that comply with ISO 6535:2008 Portable chain-saws — Chain brake performance.
How were chainsaws used in childbirth?
Two doctors invented the chainsaw in 1780 to make the removal of pelvic bone easier and less time-consuming during childbirth. It was powered by a hand crank and looked like a modern-day kitchen knife with little teeth on a chain that wound in an oval.