
Esko Kongsberg SR6xxx series blades are specialized Single Edge Round (6mm) shaft tools designed primarily for oscillating knife units to cut through foam, corrugated board, and sandwich materials. For foam applications, these blades are typically made from tungsten carbide for durability and sharp detail accuracy.
Blade overview table
| Part number | Esko code | Knife height | Max cutting depth | Cutting angle (approx.) | Tip / geometry notes | Typical materials |
|---|---|---|---|---|---|---|
| BLD‑SR6311 | G42443101 | 52 mm | 30–36 mm | 2.5° (very acute) | Pointed tip for felt underlays; very fine detail, low overcut | Expanded polystyrene, foam board, honeycomb, polyethylene foam |
| BLD‑SR6312 | G42443093 | 52 mm | 30 mm | ~3.7° (acute) | Pointed tip, similar to SR6311 but slightly more robust | Foam board, honeycomb, soft/medium foam materials |
| BLD‑SR6313 | G42443085 | 52 mm | 30–35 mm | ~8° | Flattened tip to increase speed and protect PVC/felt underlays | Foam board + paper surface <30 mm, PE foam <30 mm, soft foam, honeycomb/Re‑board 20–30 mm |
| BLD‑SR6521 | G42444877 | 76 mm | 55 mm | 2.5° (very acute) | Pointed tip; very fine detail in thick foam | EPS <50 mm, low‑density protective foam, thick foam board, honeycomb |
| BLD‑SR6522 | G42444885 | 76 mm | 55–60 mm | 3.7° | Pointed tip for felt underlays; fine detail, balanced robustness | Aramid/carbon/canvas, cardboard, foam board, honeycomb, rubber, textiles, PVC, reflective foil |
| BLD‑SR6523 | G42444893 | 76 mm | 55–60 mm | ~8° | Flattened tip; higher speed, more robust edge | Thicker foam, honeycomb, re‑board, soft/medium‑hard materials |
| BLD‑SR6831 | G42444919 | 80 mm | 80 mm | 1.5° (ultra‑acute) | Pointed tip; minimal overcut, very fine detail in very thick foam | Very thick EPS/foam up to ~80 mm, deep foam board, honeycomb |
| BLD‑SR6832 | G42444927 | 80 mm | 80 mm | 2.5° | Pointed tip; fine detail with slightly more robust edge than SR6831 | Thick foam, foam board, honeycomb, soft/medium materials up to ~80 mm |
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