Mandrel for Polishing Wheels | 6 mm Shank | 3M™ MN-AC 900/6

Mandrel 6 mm / left-hand thread

Bore: 12 mm

Clamping thickness: 12 mm

Disc diameter: <100 mm

Weight: kg
Incl. VAT (Total price depending on the VAT rate of the country of delivery), excl. Shipping Cost
2-3 Days *
Item No.

With the 3M™ mandrel MN-AC 900/6, you can connect abrasive fleece discs or small cotton bufing discs securely to common drives. This makes manual work in hard-to-reach places, deburring edges and finishing fillet welds easier. The compact design of the mandrel makes small and delicate areas easily accessible. A variety of materials and discs for machine grinding and polishing can be securely attached to the 3M™ MN-AC mandrel. The scope of delivery includes a mandrel with a left-hand thread, a union nut and several flanges of different sizes.


  • Mandrel for easy mounting of rotating tools such as polishing discs, abrasive fleece discs, brushes, etc.
  • Compact design for machining small workpieces with complex surfaces and undercuts
  • Safe use together with EICKELIT discs or polishing materials on rotating drive units
  • Very good for deburring edges and fillet welds


  • Maximum disc thickness: approx. 12 mm
  • Diameter of mandrel: 6 mm
  • Hole: 12mm
  • Left-hand thread for clockwise-rotating drives

Scope of delivery

  • 1 mandrel 6 mm / 12 mm with left-hand thread M14
  • 1 union nut M14 / left-hand thread
  • 2 flanges 12 x 25 mm
  • 2 flanges 12 x 40 mm
  • 2 flanges 12 x 50 mm

Safety information

  • Maximum permitted disc diameter: 150 mm
  • The mandrel may only be used together with the supplied components
  • Polishing discs must always be secured with suitable flange discs
  • The flange diameter [d] must be selected so that it covers at least half the diameter of the polishing wheel [D] used: d = 1/2 D
  • The mandrel may only be operated when the mandrel is fully clamped over its entire length
  • The union nut must always be screwed in over all threads
  • Never exceed the manufacturer's specifications for the maximum speed of the clamped disks
  • Observe our instructions for working safely