Husqvarna 268K, 272K manual Cutting discs, Diamond discs, Using diamond discs, Dry diamond discs

SAFETY INSTRUCTIONS

Cutting discs

Guard

Type of cutting discs

Check that the disc is approved for high speed, portable power cutters. Do not exceed the maximum working speed stated on the disc.

Damage

•Ensure the disc it not cracked or damaged in any other way.

•Test the disc by hitting it gently with a piece of wood. If the disc does not give a full-sounding ring then it is damaged.

•Never use a disc that has fallen on the floor.

Assembly

•Check that the disc is fitted correctly and is secure.

•Follow all specifications in the table below.

100 m/s

6300 rpm

Check that the guard is not crack or shows signs of any other damage. Clean the inside of the guard before fitting a new disc. Check that the guard can be adjusted and locked.

Diamond discs

Diamond discs are basically made in the same way as abrasive discs but are manufactured from industrial diamonds held together by a bonding agent.

DIAMOND DISCS TYPES AND USES

Diamond	General char-	Material	Water cooling
disc	acteristics
	Low cost per	All brickwork,	Increases the
	cutting opera-	reinforced	disc’s service
	tion. Less disc	concrete and	life.
	changes.	other
	Constant cutting	composite
	depth. Less	materials.
	dust.	NOT
		recommended
		for metal.

WARNING!

Cool a diamond disc continually with water to

! prevent overheating, which can cause the disc

Specifications for fitting discs

Standard discs	inches	.787	7/8	1
centre hole	mm	20	22,2	25,4
(spindle)
Reducing bush*	Max. thickness	Disc thickness
	Min thickness	3 mm (1/8")
Backing pad	Material	Highly compressible,
(Must be used)		e.g. blotting paper
	Max. thickness	0,5 mm (.020")
Spindle hole/	Play	0,2 mm (.010")
drive shaft
Flange tightening	The disc does not slip, flange not bent
Disc/guard	Check that the disc runs free of the
	guard.

*Plastic reducing bushes may only be used with abrasive discs. Do not use reducing bushes with diamond discs or tungsten carbide tipped blades. We recommend that the spindle is replaced so that it fits the discs to be used rather than using a reducing bush. Contact your service workshop for details.

to break and pieces being thrown off resulting

in injury and damage.

Using diamond discs

Proceed as follows:

•Let the disc rotate in the same direction as the arrow indicates.

•Cool continually with water.

•Keep the disc sharp.

•Remove the disc when transporting the cutter.

Avoid:

•Running the disc in the wrong direction.

•Forcing a dull disc or wedging the disc into a cut.

•Transporting the cutter with the disc fitted.

•Letting the disc fall on the work piece.

Dry diamond discs

Dry diamond discs are a new generation of discs that do not require water cooling. However, the discs are still damaged by excessive heat. It is good economics to let the disc cool by simply lifting the disc from the cut every 30–60 seconds and let it cool for 10 seconds.

English – 11