Mini TURBO FAQs and Troubleshooting

The Mini TURBO fits most 4″ (100mm) and 4 1/2″ (115mm) angle grinders. However, when choosing an angle grinder to suit the blade, you should look for the following features:

  • An auxiliary handle
  • The on/off switch positioned on the top or side
  • At least 550 Watts power
  • Should have a spindle thread of: M14 (AUS and UK ) |  M14 (Europe) | 5/8″ (North America)

Yes, as long as the grinder is powerful enough and runs at a speed of 9000RPM or higher.

YES! Using the blade on the flat, and working the machine with two hands ensures the best visibility for the operator and also means that hands are kept well away from the work area.

Possible cause: Incorrect thread or adapter

Solution: Check thread, locate correct adapter

In Europe the shafts suits an M14 thread

In North America the shaft suits a 5/8 UMC x 11 thread

In Australia the shaft suits an M14.

The Mini TURBO like all of Arbortech products, should run smooth and be easy to control. A lot of effort goes into makings sure it is balanced and all the tolerances are correct for the application.

If it feels unbalanced or does not perform smoothly, it is an indication that something is wrong.

Possible cause: Incorrect fitting.

Solution: Please see fitting instructions section.

Possible cause: Spindle of grinder not true.

Solution: Check to see it is running true to the axis of the shaft. A simple test is to run the blade on the benign perimeter of the blade. If it is true, it will run smooth but if it is out of center it will tend to bounce.

Try on another grinder.

Possible cause: Grinder bearing worn.

Solution: Try on another grinder.

Possible cause: Mini TURBO extension shaft not sitting firmly on base of spindle

Solution: Ensure it is fully screwed to base of spindle. Do not use base washer of grinder. Please refer to fitting instructions section.

Possible cause: Blades are blunt

Solution: Loosen with key, rotate to teeth to new position or replace teeth.

Please refer to this video for more information on how to extend the life of your Mini TURBO teeth.

Possible cause: Build up of residue or sap.

Solution: Please see refer to the cleaning build up residue section.

Remove cutters then run against emery cloth or abrasive until shining. Warning: Too much abrading may make the cutters more aggressive.

(Ensure hands are well away from spinning blade. It is best if the emery is stuck down and both hands are on the grinder).

Watch this video for more information on how to remove sap build up:

Watch the video below for instructions on how to sharpen the carbide teeth:

Possible cause: Build up of resin

Solution: Soak overnight in solvent.

See the video below for more information.

Mini TURBO M4 / M5 FAQs

The Mini TURBO M5 (MIN.FG.510) comes with a M5 Extension Thread Shaft, M5 Screws and M5 Flanges and a new and improved Rubber Pad.

The Mini TURBO M4 (MIN.FG.500) comes with a M4 Extension Thread Shaft, M4 Screws and M4 Flanges (No Rubber Pad).

The Mini TURBO M5 will only accommodate the new single type Heavy Duty Sanding Discs SAN.FG.CL04020-05 to SAN.FG.CL32020-05 and the Assorted Git SAN.FG.CL20005-05. It will not accommodate the Mini Sander Sanding Discs.

No, it will not. You must always use M5 Flange with M5 Rubber Backing Pad.


No, it will not. You must always use a M4 Flange with a M4 Rubber backing pad.


Yes, both screw sizes should work fine with a M5 Flange and M5 Rubber Backing Pad.


No, only a M4 screw will work with a M4 Flanges and a M4 Rubber Backing Pad combination.


If you cannot find the answer to your question above, please email our technical support team: [email protected]