Electric torque wrench
Encyclopedia
An electric torque wrench is a planetary torque multiplier or a "Gearbox". This gearbox is mated to an electric motor
. At the end of the "gearbox" is a reaction device that is used to absorb the torque
. This allows the operator of the tool to use the Electric torque wrench with very little effort.
These tools are primarily used anywhere accurate torque is required on a nut and bolt, or where a stubborn nut needs to be removed.
These planetary torque multiplier Gearboxes have multiplication ratios up to 4000:1
The correct Torque output is adjusted by controlling the voltage
.
The tool has an internal computer that shuts off the voltage at a certain level that is adjusted by the operator of the tool. Because of the internal electronics, the electric torque wrench can operate from 110, or 220. It can adjust in an instant up to 360 Volts. Since the tool is operated by electricity
, there is a water proof version of the electric torque wrench available.
The benefit to the electric torque wrench is that it plugs into any wall outlet. And Runs virtually silent.
The Electric torque wrench is sometimes confused with a standard impact wrench
, because it looks similar, but it actually a totally different tool. A Electric Torque wrench is driven by continuous Gearing, and not by the Hammers of an impacting wrench.
This is why a Electric torque wrench has very little vibration, and an extreme amount of repeatability and accuracy.
The Electric Torque Wrench was first Patented in Germany in 1982.
Electric Torque Wrenches have different models capable of 65Nm up to a max of 42,160Nm.
Electric motor
An electric motor converts electrical energy into mechanical energy.Most electric motors operate through the interaction of magnetic fields and current-carrying conductors to generate force...
. At the end of the "gearbox" is a reaction device that is used to absorb the torque
Torque
Torque, moment or moment of force , is the tendency of a force to rotate an object about an axis, fulcrum, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist....
. This allows the operator of the tool to use the Electric torque wrench with very little effort.
These tools are primarily used anywhere accurate torque is required on a nut and bolt, or where a stubborn nut needs to be removed.
These planetary torque multiplier Gearboxes have multiplication ratios up to 4000:1
The correct Torque output is adjusted by controlling the voltage
Voltage
Voltage, otherwise known as electrical potential difference or electric tension is the difference in electric potential between two points — or the difference in electric potential energy per unit charge between two points...
.
The tool has an internal computer that shuts off the voltage at a certain level that is adjusted by the operator of the tool. Because of the internal electronics, the electric torque wrench can operate from 110, or 220. It can adjust in an instant up to 360 Volts. Since the tool is operated by electricity
Electricity
Electricity is a general term encompassing a variety of phenomena resulting from the presence and flow of electric charge. These include many easily recognizable phenomena, such as lightning, static electricity, and the flow of electrical current in an electrical wire...
, there is a water proof version of the electric torque wrench available.
The benefit to the electric torque wrench is that it plugs into any wall outlet. And Runs virtually silent.
The Electric torque wrench is sometimes confused with a standard impact wrench
Impact wrench
An impact wrench is a socket wrench power tool designed to deliver high torque output with minimal exertion by the user, by storing energy in a rotating mass, then delivering it suddenly to the output shaft.Compressed air is the most common power source, although electric or hydraulic...
, because it looks similar, but it actually a totally different tool. A Electric Torque wrench is driven by continuous Gearing, and not by the Hammers of an impacting wrench.
This is why a Electric torque wrench has very little vibration, and an extreme amount of repeatability and accuracy.
The Electric Torque Wrench was first Patented in Germany in 1982.
Electric Torque Wrenches have different models capable of 65Nm up to a max of 42,160Nm.
See also
- Pneumatic torque wrenchPneumatic torque wrenchA pneumatic torque wrench is a planetary torque multiplier or a gearbox that is mated to a pneumatic air motor. At the end of the gearbox is a reaction device that is used to absorb the torque and allows the tool operator to use it with very little effort...
- Power toolPower toolA power tool is a tool that is actuated by an additional power source and mechanism other than the solely manual labour used with hand tools. The most common types of power tools use electric motors. Internal combustion engines and compressed air are also commonly used...
- Socket wrenchSocket wrenchA socket wrench is a wrench with interchangeable heads called sockets that attach to a fitting on the wrench, allowing it to turn different sized bolts and other fasteners. The most common form is a hand tool popularly called a ratchet consisting of a handle with a ratcheting mechanism built in,...
- Torque wrenchTorque wrenchA torque wrench is a tool used to precisely apply a specific torque to a fastener such as a nut or bolt. It is usually in the form of a socket wrench with special internal mechanisms. It was invented by Conrad Bahr in 1918 while working for the New York City Water Department...
- Hydraulic torque wrenchHydraulic torque wrenchA hydraulic torque wrench is a tool designed to exert torque on a fastener to achieve proper tightening or loosening of a connection through the use of hydraulics. A torque wrench is applied to the nut either directly or in conjunction with an impact socket. Hydraulic torque wrenches apply a...