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      TOP DRILL FLAT with Through Coolant
      TOP DRILL FLAT with Through Coolant
      TOP DRILL FLAT with Through Coolant
      TOP DRILL FLAT with Through Coolant

      TDF511A/WU20PD • TDF521A/WN15HD • A-Shank • 3 x D

      TOP DRILL FLAT with Through Coolant

      SAP Material Number 6197130
      ISO Catalog Number TDF521A20000
      ANSI Catalog Number TDF521A20000
      Grade WN15HD
      [D1] Drill Diameter M 20.0000
      [D1] Drill Diameter M .7874
      [L] Overall Length 131.0000
      [L] Overall Length 5.157
      [L3] Flute Length 79.0000
      [L3] Flute Length 3.110
      [L4] Maximum Drilling Depth 55.0000
      [L4] Maximum Drilling Depth 2.165
      [LS] Shank Length 50.0
      [LS] Shank Length 1.968
      [D] Adapter / Shank / Bore Diameter 20.0
      [D] Adapter / Shank / Bore Diameter .7874
      See all Product Variants

      Uses and application

      • DrillingDrilling
      • Drilling: Inclined EntryDrilling: Inclined Entry
      • Drilling: Inclined ExitDrilling: Inclined Exit
      • Drilling: X-OffsetDrilling: X-Offset
      • Drilling: Flat BottomDrilling: Flat Bottom
      • Drilling: Stacked PlatesDrilling: Stacked Plates
      • 钻孔: 凸面钻孔: 凸面
      • Chain DrillingChain Drilling
      • Drilling: Cross-Hole DrillingDrilling: Cross-Hole Drilling
      • Drilling: Corner Drilling 45°Drilling: Corner Drilling 45°
      • 钻孔深度 3x钻孔深度 3x
      • Corner Style: Corner ChamferCorner Style: Corner Chamfer
      • 刀尖类型: 方头立铣刀尖类型: 方头立铣
      • 刀柄—  圆柱 平面度 ≤h6刀柄— 圆柱 平面度 ≤h6
      • 螺旋角: 30°螺旋角: 30°
      • 3856338563
      • 3855038550
      • Through Coolant: Radial: DrillingThrough Coolant: Radial: Drilling
      • MQL (Minimum Quantity Lubricant): DrillingMQL (Minimum Quantity Lubricant): Drilling
      • 2flute/4margin: coolant2flute/4margin: coolant

      Workpiece Materials

      N Non-Ferrous

      Features and benefits

      • Flat bottom drill with through coolant.

      • Application specific SC Drills design to reduce the number of operations when: 1) a flat bottom hole is needed, eliminating the needs of an additional SC End Mill; 2) is necessary the preparation on an inclined or curved surface.

      • Four-margin land design to improve hole straightness and roundness. Increased stability even in crossing holes operations.

      • Creates full flat bottom holes.

      • Two grades to cover the majority of the workpiece materials.


      • WN15HD
        N Non-Ferrous
      • WU20PD

        成份:这种材质采用 PVD TiN-TiAlN 复合涂层以及高品质的亚微晶粒硬质合金基体材料,表面经过先进技术处理,具有最佳的耐磨性和极高的切削速度性能。

        P Steel
        M Stainless Steel
        K Cast Iron
        S High-Temp Alloys
      Please adjust the following properties from

      ISO Catalog

      ANSI Catalog

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