Twisted Knot Wheels for Joints Cracks

SKU: Mod. CAM Knot of 9.5 mm (3/8")

Twist Knot Wheels for Joints Cracks offer long working life, high removal capacity and the possibility of working at high speed.

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Outside diameter (d) Nº of Knots Knot Width (a) Trim Length (s) Thread (e) Wire R.P.M. Code
mm " mm " mm " mm " mm " Max.
305 12" 40 9,5 3/8" 80 3.1/8" 25,4 1" 0,8 .31" 4.500 CAM93051L254

Technical Specifications

Finishing grade

Ø Wire Finishing Grade
0,8-0,6-0,5 Coarse W1
0,4-0,37-0,35-0,30 Medium W2
0,20-0,15-0,12-0,10 Fine W3
0,08-0,06 S. Fine W4
Non-Abrasive Fibers Neutral SW5

Removal rate

Ø Wire


DLZ, FLAP, Encapsulated brushes
Twist knots, Control brushes
Crimped wire .020 to .012
Crimped wire .010 to .004
Crimpe wire .003 to .002 Nylon & synthetic fibers

  • Brush made with wide and narrow knots.
  • These brushes fit equipment for cutting concrete,which are used to define the joint cracks.
  • The brush makes cleaning function across the joint cracks before putting the silicone.


  • An application used in airports, bridges, etc ...