Sandvik 870-1840-18-PM 4334 18.40mm CoroDrill 870 Replaceable Drill Tip (2pc)
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This listing is for a pack of 2 new Sandvik Coromant 870-1840-18-PM 4334 replaceable drill tips for the CoroDrill 870 exchangeable-tip drill system, internal part number 17477332. The MPN decodes as follows: 870 = CoroDrill 870 system; 1840 = 18.40 mm nominal drill diameter; 18 = shank/interface size 18 mm; PM = pressed and sintered carbide geometry optimized for steel and cast iron; 4334 = PVD-coated cemented carbide grade targeting ISO P and N workpiece materials. Grade 4334 is a fine-grained carbide substrate with a PVD TiAlN-family coating, delivering high wear resistance and edge toughness for drilling steel (ISO P) at vc 360 sfm / fn 0.013 in/r and non-ferrous/aluminum (ISO N) at vc 690 sfm / fn 0.014 in/r, as confirmed by the cutting data label visible on the package. The tips mount directly onto compatible CoroDrill 870 shanks with an 18 mm interface using the self-locking bayonet/twist-lock mechanism shown in the photo, providing accurate, repeatable tip changeovers without removing the holder from the spindle.
Product Specifications
| Brand | Sandvik Coromant |
| MPN | 870-1840-18-PM 4334 |
| Internal Part No. | 17477332 |
| Product Line | CoroDrill 870 |
| Type | Replaceable Drill Tip |
| Drill Diameter | 18.40 mm |
| Interface / Shank Size | 18 mm |
| Geometry | PM (pressed/sintered, steel & cast iron) |
| Grade | 4334 |
| Coating | PVD TiAlN-family |
| ISO Material Group (P) vc | 360 sfm / 110 m/min |
| ISO Material Group (P) fn | 0.013 in/r / 0.33 mm/r |
| ISO Material Group (N) vc | 690 sfm / 210 m/min |
| ISO Material Group (N) fn | 0.014 in/r / 0.35 mm/r |
| Compatible Material Groups | ISO P (steel), ISO N (non-ferrous/aluminum) |
| Country of Origin | Sweden |
| Quantity per Pack | 2 tips |
| Condition | New |