Insert-Style Spot Drills, Chamfer Mills and Engraving Tools

Insert Style Spot Drills feature a greater accuracy than conventional spot drills and center drills in that they can directly mount to a Machine's ID tool holder bore. Insert Spot Drills are also repeatable within .0005"-.001", so when tool changing is required the holder does not need to be re-located, helping increase a machine's productivity time. Inserts are changed by the use of a simple screw-driver, thereby eliminating collet wrenches making it easier to change tools inside the tight quarters of your Swiss Machine's tooling layout. Inserts are countersunk to ensure the insert is always properly seated in the holder and facing the correct direction. Available in a variety of coatings: TiN, TiAlN, & AlTiN Hard Metal Coating.


  • Greater Accuracy than Standard Center Drills
  • Can Mount directly to the machines ID tool Stations, elminating collets
  • Repeatability is under .001" making tools changing simple.

Spot Inserts Sizing Chart

Available Hard Coatings: TiN, TiAlN, &AlTiN

Angle #2 Size - Ø .250" #3 Size - Ø .375" #4 Size - .500" Grind Hand Web Thickness (TNR)
F-.005" / M-.015" / H-.036"
60° SDI-2-060 SDI-3-060   P/N R / L (F)ine web only
**NOTE THAT 60 INSERTS DO NOT CONFORM TO MAX SPOTTING DIAMETER. USE FOR MICRO SPOTTING ONLY!!**
82° SDI-2-082 SDI-3-082 SDI-4-082 P/N R / L (F)ine / (M)edium / (H)eavy
90° SDI-2-090 SDI-3-090 SDI-4-090 P/N R / L (F)ine / (M)edium / (H)eavy
120° SDI-2-120 SDI-3-120 SDI-4-120 P/N R / L (F)ine / (M)edium / (H)eavy
140° SDI-2-140 SDI-3-140 SDI-4-140 P/N R / L (F)ine / (M)edium / (H)eavy

IMPORTANT ORDERING INFORMATION 

Example Part No. : SDI-2-060-PRM-TiN

Part Number Nomenclature :

  • Spot Drill Insert
  • No.2 size (.250") with a
  • 60 degree angle,
  • Positive Grind, Right handed, Medium Point TNR (.015") and
  • TiN hard coating

SDI-2-060-PRM-TiN


Spotting Insert Holders

Note: Some Holders are available in your choice of (2) Overall Lengths - Please specify when ordering

Shank Dia. #2 Size OAL #3 Size OAL #4 Size OAL
1/4" SDH-2-250-2.0 2.0"        
3/8" SDH-2-375-xxx 1.5" or 2.5" SDH-3-375-xxx 2.0" or 3.0" SDH-4-375-3.5 3.5"
1/2" SDH-2-500-xxx 1.5" or 2.5" SDH-3-500-xxx 2.0" or 3.0" SDH-4-500-xxx 2.5" or 3.5"
5/8" SDH-2-625-xxx 3.0" or 5.0" SDH-3-625-xxx 3.0" or 5.0" SDH-4-625-xxx 3.5" or 5.0"
3/4" SDH-2-750-xxx 3.5" or 5.0" SDH-3-750-xxx 3.5" or 5.0" SDH-4-750-xxx 3.5" or 5.0"
22mm SDH-2-866-5.0 5.00" SDH-3-866-5.0 5.0" SDH-4-866-5.0 5.0"
1"     SDH-3-1000-5.0 5.0" SDH-4-1000-5.0 5.0"

Double Ended Spot Holders

Perform Spotting on Main & Subspindle

Shank Dia. #2 Size OAL #3 Size OAL #4 Size OAL
5/8"     SDH-3D-625-3.0 3.0"    
3/4"     SDH-3D-750-4.0 4.0"