CNC grinding: end mills, drills & special cutters
See how we use a CNC grinder to make carbide end mills, drills and special cutters.
Watch on YouTubeDIN 6537 Standard Sizes · Coolant-Thru Drill Depth Ratio
3D DIN 6537 Carbide Coolant-Thru Drills
These are German DIN 6537 standard-size coolant-through carbide drills. The 3D depth ratio is the workhorse of through-hole and short-blind-hole drilling. With the shortest flute-to-diameter ratio in the range, the 3D offers maximum rigidity and excellent straightness in steels, cast iron, and aluminium alloys. Ideal for high-feed automotive and general engineering applications where cycle time is critical.
3xD carbide drillstandard depth coolant drillthrough-hole carbide drillhigh-feed drilling
Applications
Short through holes · Stable blind holes · Automotive brackets · General steel and cast-iron parts
Feed-In Method
Run directly after spot or chamfer preparation when the work surface is flat and rigid. Pecking is normally unnecessary with stable coolant flow.
Pilot Hole
Usually not required. Use a short pilot or spotting operation only on angled, cast, or interrupted entry surfaces.
Coolant Requirement
Use internal coolant or high-quality flood coolant at 15-30 bar. Keep filtration fine enough to protect small coolant channels.
3D DIN 6537 SKU Range
Complete 3D DIN 6537 Coolant-Thru Drill Sizes
Standard depth — through-holes, high-feed production drilling
| CUTTER DIA (D1) h7 | FLUTE LENGTH (L2) | SHANK DIA (D2) h6 | OVERALL LENGTH (L1) | Price | SKU PAGE | |
|---|---|---|---|---|---|---|
| 3.00 | 0.1181 | 20.00 | 4.00 | 62.00 | $11.39 | Details |
| 4.00 | 0.1575 | 24.00 | 4.00 | 66.00 | $11.73 | Details |
| 5.00 | 0.1969 | 28.00 | 6.00 | 66.00 | $20.24 | Details |
| 6.00 | 0.2362 | 28.00 | 6.00 | 66.00 | $20.24 | Details |
| 7.00 | 0.2756 | 34.00 | 8.00 | 79.00 | $34.08 | Details |
| 8.00 | 0.3150 | 41.00 | 8.00 | 79.00 | $34.08 | Details |
| 9.00 | 0.3543 | 47.00 | 10.00 | 89.00 | $51.99 | Details |
| 10.00 | 0.3937 | 47.00 | 10.00 | 89.00 | $51.99 | Details |
| 11.00 | 0.4331 | 55.00 | 12.00 | 102.00 | $77.00 | Details |
| 12.00 | 0.4724 | 55.00 | 12.00 | 102.00 | $77.00 | Details |
| 13.00 | 0.5118 | 60.00 | 14.00 | 107.00 | $104.31 | Details |
| 14.00 | 0.5512 | 60.00 | 14.00 | 107.00 | $104.31 | Details |
| 15.00 | 0.5906 | 65.00 | 16.00 | 115.00 | $145.42 | Details |
| 16.00 | 0.6299 | 65.00 | 16.00 | 115.00 | $145.42 | Details |
| 17.00 | 0.6693 | 73.00 | 18.00 | 123.00 | $195.78 | Details |
| 18.00 | 0.7087 | 73.00 | 18.00 | 123.00 | $195.78 | Details |
| 19.00 | 0.7480 | 79.00 | 20.00 | 131.00 | $256.31 | Details |
| 20.00 | 0.7874 | 79.00 | 20.00 | 131.00 | $256.31 | Details |
Process Notes
What to Confirm Before Running 3D
Feed-In
Run directly after spot or chamfer preparation when the work surface is flat and rigid. Pecking is normally unnecessary with stable coolant flow.
Pilot Hole
Usually not required. Use a short pilot or spotting operation only on angled, cast, or interrupted entry surfaces.
Cooling
Use internal coolant or high-quality flood coolant at 15-30 bar. Keep filtration fine enough to protect small coolant channels.
RFQ Data
Send diameter list, coating preference, work material, hole type, and annual quantity for a fast quote.
RFQ Checklist
Quote 3D DIN 6537 coolant-thru drills faster
- Diameter list and quantities
- Work material and hardness
- Hole depth, blind/through condition, tolerance
- Coolant pressure, filtration, machine/toolholder
- Coating preference and annual quantity
FROM OUR WORKSHOP
Watch us grind and inspect our tools
Two videos filmed in our workshop: CNC tool grinding and dimensional inspection.
Measuring carbide end mills at 0.001 mm
Watch our ZOLLER inspection process for precision carbide end mills.
Watch on YouTube