Carbide Boring End Mill

Specifications

Model Number		Effective Hole Drilling Depth	Blade Length ℓ	Overall Length L	Shank Diameter d	C Chamfer Plane
	Flute Diameter D
TAC-BREM3R	2	10	12	90	6	0.5
	3	15	17	90	6	0.5
	4	20	22	100	6	0.8
	5	25	27	100	6	0.8
	6	30	32	105	8	1.
	8	40	42	105	10	1.5
	10	50	52	120	12	2.

For Cutting Conditions, Refer to >>Click here.

More Information

(1) Suitable for a wide range of workpieces
- With a uniquely shaped cutting edge, holes can be drilled in various work materials such as stainless steel, aluminum alloy, etc.
(2) High-speed cutting is now a reality
- Drilling is performed with 60 m or more cutting conditions per minute.
(3) Various uses including hole finishing and high-accuracy pilot holes
- Use for hole finishing to achieve a precision in dimensions / surface roughness that is equivalent to boring and reaming.
- Ideal for drilling high-accuracy pilot holes for screws with a high catch rate.
- Since a correction can be made for variations in the pilot hole diameter, the positional accuracy of the holes can be improved.
- When a shrink-fit holder is applied, further high-precision hole drilling can be achieved.
(4) Wet, semi-dry, and dry cutting are all handled
- Wet cutting using cutting fluid, as well as semi-dry and dry cutting are all supported.

■ Machining Example

■ Machining Data Useable Tools TAC-BREM3R-6 Size Flute Diameter = 6, Blade Length = 32, Total Length = 105 Work Material S50C Revolution Speed 4770 min-1 Feed Rate 1190 mm/min Hole Depth 24 mm Machine Used Factory of Kitamura Machinery Co., Ltd. Coolant Dry ■ Comparison of Drilling Times

■ Hole Diameter Measurement Entrance: 6,020 mm Exit: 6,010 mm [Machining Speed Comparison (example)] Boring End Mill 1.2Seconds Carbide Reamer 15 Seconds High-Speed Steel Reamer 32 Seconds Machining time compared to a carbide reamer is approximately 1/12, and the equivalent hole finishing is achieved.