ELECTRIC SANDER OPERATION

The electric sander, the engine of the portable sander

Almost different types of sanders use an electric motor single phase 220V for portable equipment and workshop.

Aside from the helicopter rotary power using a combustion engine and some heavy electric sanders or workshop that connect three phase 380V, most portable electric or pneumatic sanders use 220V.

Electric sander: wired or battery

Before purchasing a sander, take a serious look on the Motor of it, which is the most important part. For more information about some brands and types, look for the belt sander reviews.

The motor of the electric sander

The electric motor is a conventional engine 220 Volts copper winding single-phase asynchronous.

The electric motor power ranges from a few hundred watts to several kilowatts depending on the size and destination of the tool.

The starting and stopping of the sander are controlled via a trigger.

The electronic dimmer

Rotatable up to more than 15 000 minutes turns, the motor of the electric sander is sometimes equipped with an inverter for controlling its speed of rotation.

The electronic controller is mounted on the engine power supply and regulates the voltage of the influent stream to slow or speed up the movement of the abrasive.

The electric motor components

The conventional electric motor of the sander is composed of:

  • a magnet and wound stator,
  • a rotor which ensures the movement,
  • a ball bearing assembly rotor – stator,
  • Coal for the electric contact of the rotor.

Coals in electric sander are wear parts that must regularly be replaced without specialist knowledge.

Quality machines have accessible carbon brush holder without removing the body of the sander.

The motor bearing is a part that can be replaced but requires delicate work to be reserved for professionals.

The belt sander

The drive belt of the sander, the transmission of motion

While sanders have a direct drive with a possible eccentricity cam, belt sanders, and some large machines have a drive belt.

The drive belt is:

  • essential on the belt sander,
  • Sometimes present on the floor sander.

The belt sander the drive belt

Description of the belt sander

The belt sander

Essential to transmit the motion of the motor to the drive roller, the belt of the belt sander is a wearing part easy to replace.

Replacing the belt

Here are the steps when replacing the belt sander:

  • Take the machine references (Brand, type) and search for the same belt to a dealer.
  • Dismantle the protective belt cover
  • eventually, relax the tension lever of the abrasive belt
  • Replace belt
  • Tighten the tension lever of the abrasive belt
  • Replace the cover

The drive belt from the floor sander

On a floor sander or a floor polisher, there may be a direct drive when the motor is placed above the axis of the plate, but a belt can also affect driving.

The advantage of the belt on the polisher is the flexibility and the ability to vary the speed of the plate doubled in low and high speed.

The replacement of the belt of the floor grinding machine requires the intervention by a professional workshop to meet the belt tension.

The motor of the sander on battery

What to know about the engine of the wireless battery:

The electric motor is a conventional engine of 7 to 18 Volts copper winding single-phase asynchronous.

The power of the electric motor varies between 100 and 300 W depending on the capacity of the battery.

The cordless sander is rarely equipped with a variable speed drive.

The starting and stopping of the sander are controlled via a trigger.

The batteries of the wireless sander

The battery of the wireless sander must be Lithium – Ion.

There are two types of batteries:

  • The detachable battery
  • Removable battery

This drum sander fits several tools and allows working with a battery while the other is charging.

The solution is to focus on portable sanders.

Integrated battery

The integrated battery for wireless sander requires discontinuation of work while charging the battery.

This solution is bearable for the mini-sander only.

The components of the electric motor of this sander

The conventional electric motor of the wireless sander is composed of:

  • a magnet and wound stator,
  • a rotor which ensures the movement,
  • a ball bearing assembly rotor – stator,
  • Coal for the electric contact of the rotor.

 

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