An overspeed shut-off device increases operator safety by reducing the risk of accidents.
Pneumatic grinders are widely used in the manufacturing industries, in particular in metal working sectors such as foundries, casting plants and fabrication. In such industries, safety is of utmost importance. The overspeed shut-off device, a feature available in a pneumatic grinder, maximizes the operator safety by reducing the risks of abrasive related incidents caused by air pressure fluctuations (above 90 PSI / 6.3 bars).
How does it work?
In the unlikely event of overpressure (or external factor affecting the tool speed), this device stops the tool, preventing the abrasive from overspeeding and causing possible accidents.
WHEN THE OVERSPEED SHUT-OFF DEVICE IS OPEN
The air flow is continous from air inlet, through motor and to the exhaust.
WHEN THE OVERSPEED SHUT-OFF DEVICE IS CLOSED
A steel sphere blocks the air stopping the motor rotation: the air flow is interrupted.
“When the overspeed shut-off device is released, the tool is blocked. It is highly recommended to do a diagnostic first to determine the cause that led to the activation of the device, and only then reset the tool. Always refer to the tool’s manufacturer instructions when doing so.”
Providing a safe working environment for operators is essential, especially when using pneumatic tools and compressed air. If there is a failure in the air network and the hose is not adequately clamped, the resulting whiplash could be devastating. Failure to follow best practice can result in injuries, associated production downtime and decreased productivity.
There is no industry standard to measuring and reporting on torque values, and torque is presented differently by tool manufacturers. The various methods of measuring torque have ultimately led to much confusion amongst tool users as to which values are important when specifying and operating equipment.