Overview of Insert Drills and Counterboring Tools (Size 01)

1. Insert Drills Specifications

The document lists various insert drills identified by part numbers (e.g., 01F-02,4, 01B-03,0, 01LB-03,2) with diameters ranging approximately from 2.4 mm to 8.6 mm. These drills are categorized by types B, LB, and F, all made from High-Speed Steel (HSS) with specific tolerances and flute lengths:

• Type B and LB: HSS, tolerance h8, flute length 12 mm
• Type F: HSS, tolerance h8, flute length 17 mm

The drills are designed for through-hole applications and must break through the workpiece before secondary cutting begins. They are not suitable for blind holes.

2. Counterbores and Countersinks Specifications

Counterbores and countersinks are provided under types W and T, also made from HSS with different tolerances and flute lengths:

• Type W: Tolerance p8, flute length 16 mm
• Type T: Tolerance x9, flute length 16 mm

Dimensions include diameter (d), pilot diameter (d1), minimum diameter (d2min for type T), and lengths (L, L1). For example, type W with d=7.0 mm, d1=2.4 mm, L=28.0 mm, L1=16.0 mm.

3. Tool Holders

Two types of tool holders are described:

• Type A: Shank options include MT1, Ø6 mm, and Ø10 mm with part numbers 01A-MK1, 01A-6, and 01A-10 respectively.
• Type S: With rotating depth-stop, shank options MT1 and Ø10 mm, part numbers 01S-MK1 and 01S-10.

Dimensions for tool holders include diameter (D), tolerance g7, shank diameter (d), and lengths (L, L1, L2). For example, 01A-MK1 has D=14 mm, d=7 mm, L=120 mm, L1=58 mm.

4. Important Usage Notes

• When combining insert drills with countersinks, the drill must penetrate the workpiece fully before secondary cutting starts.
• Insert drills are not recommended for blind holes.

5. Summary Table Highlights

Tool Type	Diameter (mm)	Part Number Examples	Material & Tolerance	Flute Length (mm)
Insert Drills B, LB, F	2.4 - 8.6	01B-02,4, 01LB-03,2, 01F-04,0	HSS, Tol. h8	12 (B, LB), 17 (F)
Counterbores W	5.0 - 16.0	01W-05,0, 01W-16,0	HSS, Tol. p8	16
Countersinks T	7.0 - 10.5	01T9-06,0, 01T9-10,4	HSS, Tol. x9	16

6. Dimensional Parameters

• d: Main diameter of the tool
• d1: Pilot diameter for drills and counterbores
• d2min: Minimum diameter for countersinks (type T)
• L, L1, L2: Various length parameters defining flute length, overall length, and shank length

7. Application Recommendations

These tools are intended for precision drilling and counterboring operations with strict adherence to tolerances and flute lengths to ensure optimal cutting performance. The use of appropriate tool holders and adherence to the note on drill breakthrough is critical for tool life and hole quality.