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      U170 Series
      U170 Series
      U170 Series
      U170 Series

      43mm (1.70") Step Shank • Heavy

      U170 Series

      Metric
      Inch
      SAP Material Number 4025558
      ISO Catalog Number U170 4.5 25NBHFLR
      ANSI Catalog Number U170 4.5 25NBHFLR
      Grade K3560
      [D] Shank/Bore Diameter 43.300 mm
      [D] Shank/Bore Diameter 1.700 in
      [DR] Shank Diameter Reduced 34.700 mm
      [DR] Shank Diameter Reduced 1.370 in
      [TD] Tip Diameter 24.900 mm
      [TD] Tip Diameter .9800 in
      Point Included Angle [SIGMA] 100.000
      [L1] Gage Length 114.200 mm
      [L1] Gage Length 4.500 in
      [D2] Body Diameter Workpiece Side 63.500 mm
      [D2] Body Diameter Workpiece Side 2.500 in
      [LS] Shank Length 132.100 mm
      [LS] Shank Length 5.200 in
      [OAL] Overall Length 246.300 mm
      [OAL] Overall Length 9.700 in
      See all Product Variants

      Uses and application

      • Cutting Conditions: SevereCutting Conditions: Severe
      • X TreatmentX Treatment

      Features and benefits

      • Catalog numbers containing "HF" indicate Hard Faced Treatment.

      • For specific insert type, see the Product Selector on pages 23–35.

      Machine Side

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      Workpiece Side

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      Grades

      • K3560
      • K3570

      Spare Parts for 43mm (1.70") Step Shank • Heavy

      Spare Part
        Retainer LR138
        Retainer LR138
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