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Shape 41
Shape 41
Straight cutting disc


Content: 10 Unit

Prices incl. VAT plus shipping costs

  • 201304
  • Please select your desired product variant here:

Product dimensions:


Heavy-duty stationary cutting disc with rugged exterior reinforcement for safe cutting.

• Long lifetime
• Cool cut
• Easy cutting

Machine suitability:
The ST21 cutting disc can be used with stationary machines.

Material suitability:
The ST21 is specially designed for use on steel (carbon steel – also termed structural steel, St37, S235JR and 1.0037) and cast steels (ductile or grey cast iron, etc.).

Structure and production:
The cutting disc contains high-quality corundum (aluminium oxide) and 2 full-coverage glass cloth layers. The minimum side load for the cutting disc as defined by EN 12413 and oSa is 40 N (50 N from a diameter of 150 mm). The expiry date (three years) is embossed in the disc hole ring. Consistently high quality is ensured by sophisticated in-process controls applied during manufacturing. To ensure a maximum level of safety, every thousandth disc is tested destructively. This disc features a straight shape (shape 41). Cutting discs with a straight shape enable deeper insertion depths and therefore a greater number of cuts.

During use, the ST21 offers a highly aggressive cut, as well as a long lifetime, a low level of sparking and smooth, vibration-free operation. This cutting disc helps to make work especially cost-effective. This high-quality RHODIUS tool is especially suited to cutting structural and tool steel, spring steels and high-alloy steel, as well as high-strength sheet metal, supports and sections.

The stationary cutting disc is available with a disc width of 3.0 mm to 4.0 mm, in diameters from 300 mm to 400 mm.

This is the ideal tool for the many applications and challenges faced in plant or container construction, in foundries and fettling shops, boiler and tank construction, structural steel engineering and pipeline construction.


Cutting ability for solid material
Cutting ability for thin-walled material
Width in mm Width in mm
Material suitability:
Steel Steel Cast iron Cast iron
Safety instructions:
No freehand grinding No freehand grinding
m/s m/s
Machine suitability:
Stationary cutting/grinding machine Stationary cutting/grinding machine

Product variants:

size Product dimensions rpm Maximum revolutions box Content computer Article no. Product category number GTIN barcode packing unit
300 x 3,0 x 22,23 6400 U/min 10 201304 PK03 4011890045268
300 x 3,0 x 25,40 6400 U/min 10 201305 PK03 4011890047903
300 x 3,0 x 32,00 6400 U/min 10 201307 PK03 4011890045275
300 × 3,0 × 40,00 6400 U/min 10 201308 PK03 4011890045282
350 × 3,5 × 25,40 5500 U/min 10 201330 PK03 4011890045299
350 × 3,5 × 32,00 5500 U/min 10 201332 PK03 4011890049167
400 x 4,0 x 32,00 4800 U/min 10 201353 PK03 4011890045305
400 x 4,0 x 40,00 4800 U/min 10 201354 PK03 4011890045312

Comparable products

rhodius_ref_st56_300_4011890007518_p01 ST56
Cutting ability for solid material
Cutting ability for thin-walled material

Suitable accessories

Consumers are shown prices including VAT (gross), and companies are shown prices excluding VAT (net).