Typical application of integral alloy drill bits:
- Small diameter hole
- Tight or precision tolerance hole
- The hole shorter than a deep hole
Chip formation and chip evacuation are important issues in drilling. It depends on the workpiece material, blade geometry selection, coolant pressure, capacity, and cutting parameters.
Chip clogging can cause the drill bit to move radially and affect hole quality, bit life and reliability.
The drill bit is mounted on the shank chuck and its circumferential runout must be less than 0.02 mm.

Feature Advantage:

Various thread base hole drills such as ISO thread and UN thread.
Optimized drill tip structure for better cutting performance.
∅2 - ∅25 Diameter, 0.1 mm first gear, complete types.
3D, 5D, all kinds of lengths are complete.
All types are available in both internal and external cooling to meet the requirements of various machine tools.
AlCrN coating combines excellent wear resistance with anti-blocking properties for improved edge stability.
The unique coating post-treatment technology effectively reduces the cutting force, making the chip removal smoother and safer.

Recommended Cutting Parameters:

When using this series of tools for the first time, the cutting is performed according to the recommended cutting speed of 90% or the feed rate of 85%. When the cutting condition is stable, the cutting speed and the feed are increased one by one.
Cutting parameters are recommended for water soluble cutting fluids.
Use a defect-free, clean chuck when installing the drill and control the drill runout to within 0.02 mm.
The recommended cutting parameters are for applications where the hole depth is below 5D.
The recommended cutting parameters are externally cooled drills, which can be increased by 10%-15% depending on the situation.

Material	Mild Steel, Carbon Steel, Alloy Steel <HRc 30		Pre-Hardened Steel <HRc 40		Stanless Steel
Speed m/min	60-120		40-70		25-40
Diameter mm	Rotating r/min	Feed mm/r	Rotating r/min	Feed mm/r	Rotating r/min	Feed mm/r
2	14000	0.06-0.08	9500	0.06-0.08	5500	0.02-0.05
3	9500	0.09-0.12	6300	0.09-0.12	3700	0.03-0.07
4	7000	0.10-0.15	4700	0.10-0.15	2700	0.04-0.08
5	5700	0.12-0.18	3800	0.12-0.18	2200	0.05-0.10
6	4700	0.14-0.20	3100	0.14-0.20	1850	0.06-0.12
8	3600	0.16-0.24	2400	0.16-0.24	1400	0.08-0.16
10	2800	0.18-0.27	1900	0.18-0.27	1100	0.10-0.18
12	2400	0.20-0.30	1600	0.20-0.30	930	0.12-0.20
14	2100	0.22-0.35	1400	0.22-0.35	800	0.13-0.22
16	1800	0.25-0.36	1200	0.25-0.36	700	0.14-0.25
18	1600	0.28-0.38	1100	0.28-0.38	620	0.15-0.28
20	1400	0.30-0.40	950	0.30-0.40	550	0.16-0.30
25	1500	0.32-0.42	900	0.32-0.42	700	0.17-0.32

ISO Solid Carbide Custom Step Drills For M8 Thread Base Hole And Chamfer

CNC Carbide Inserts