What these codes are
BLD-SR6223
6 mm cylindrical shank, solid tungsten carbide, oscillating knife.
Designed for soft to medium materials, especially corrugated cardboard (up to about 12 mm thick, including microflute through triple wall).
Used in Standard Reciprocating / Long Stroke / HF VibraCut tools on Kongsberg X and similar tables.
BLD-SR6224
6 mm cylindrical blade from the same SR6xxx family, typically supplied together with SR6223 in the “adapter for round SR6xxx blades” kit for the reciprocating knife tool.
Also used on corrugated board and other light fibrous materials; geometry differs slightly from SR6223 (angle / length), so it may be better for different flute thickness or edge quality.
BLD-SR6310
6 mm cylindrical oscillating blade included as a standard option for the same reciprocating knife tool, again used for corrugated and similar substrates.
Typically paired with SR6223, SR6224, and SR6303 in the official tooling set for corrugated applications.
BLD-SR6303
6 mm single‑edge round oscillating blade, 20 mm cutting length in many aftermarket equivalents.
Used for detailed and general‑purpose cutting in corrugated and other soft materials on Esko/Kongsberg tables.
How they relate to “6 mm cylindrical blades for corrugated”
All four codes (BLD‑SR6310, BLD‑SR6224, BLD‑SR6223, BLD‑SR6303) are part of the 6 mm cylindrical SR6xxx series intended for use with the oscillating/vibrating knife on Esko cutters.
They are specifically listed in tooling guides as standard blades for single and double‑wall corrugated board and similar fibrous materials, which matches your “6 mm Cylindrical Blades for cutting corrugated cardboard” description.
If you tell what flute types and maximum board thickness you run most often, more specific pairing (e.g., favoring SR6223 vs SR6303) can be suggested.
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