Bosch PRO Stainless Steel and Metal Cutting Discs, 125 x 1 mm, X-LOCK, 10 Pieces, 2608619267

Bosch PRO Stainless Steel and Metal Cutting Discs, 125 x 1 mm, X-LOCK, 10 Pieces, 2608619267

Bosch 2608619267 is a pack of 10 cutting discs for stainless steel and metal, 125 x 1 x 22.23 mm, with an X-LOCK fitting and a straight profile. Bosch states up to 1.5 times the life of the standard metal disc 2608619767.

The 1 mm thickness

1 mm is the thin disc. The difference against a standard 2.5 mm is not only speed:

• Less material is removed - less work for the machine and a faster cut at the same power.
• Less heat into the workpiece. On stainless steel that is decisive: overheating burns off the chromium oxide layer that makes it stainless, and the cut starts rusting within weeks.
• A narrower kerf - noticeable when cutting section or tube to a measured length.

The trade-off is that a thin disc is more fragile. It cuts in a straight line only, with no side loading - twisting the grinder in the cut breaks it.

Made for stainless steel

The discs contain less than 0.1% iron, sulphur and chlorine (Fe/S/Cl). This is not a box-ticking spec: residual iron particles from an ordinary disc embed in the cut and then rust on top of the stainless steel, leaving brown speckles across the surface. Low-Fe discs do not have that problem.

Construction

Aluminium oxide grain gives cutting durability, a resin matrix holds the grain and takes the heat, and a strong fibreglass net reinforces the disc. The specification is WA 60 T BF, maximum speed 12,250 rpm at a peripheral speed of 80 m/s.

X-LOCK

X-LOCK is the tool-free disc change system: the disc clicks into place and releases with a lever. An important detail - X-LOCK discs also work on conventional grinders with an M14 threaded spindle and nut, because the bore is the standard 22.23 mm. The reverse is not true: a conventional disc will not lock into an X-LOCK machine.

Making them last

A thin disc is used up in two ways - work and misuse - and the second is far quicker. Three rules cover almost everything.

First: do not push. The disc has its own cutting rate and more pressure does not raise it - it only heats the disc and wears it faster. The right sign is a steady, even spray of sparks, not one thrown a metre across the shop.

Second: cut in a straight line only. Guide the grinder along the axis of the cut; any twist loads the disc sideways, and it is 1 mm thick - that is what breaks discs, not the cutting itself.

Third: do not stop halfway through a deep cut. On re-entry the disc rarely lands exactly in the old kerf and catches on its wall. Better to take the section in one pass, or to open the entry slightly first.

Technical specifications

Questions and Answers