30 250mm BTA `deep hole drilling head with coated insert for BTA drill

Product Overview

Description

Our indexable drill heads cover a range of diameters from 25mm up to 250mm.  These tools are designed with robust pressed carbide inserts with multiple carbide grades, coatings, chip breaker designs.  These tools can also be adjusted with our plus style spare parts.   We also offer tools with precision ground inserts for improved chip control.

BTA drill head internal chips discharge  design.

Surface nitriding hardness : HRC55-60

Close diameter tolerence and high surface finish

With ideal machine part setup condition 0.25mm per/m tool drift attainable

Higher penetration rate in most materials

BTA deep hole drilling head
1. High quality and competitive price
2. Develivery goods in time
This BTA drill  head adopt imported indexable coating blade, it has the advantage of high efficiency, change blade easily, long  service life  , low using cost.  And it can drill  on carbon steel, high strength alloy steel ,stainless steel and so on.

precision of hole diameter IT9-11.  Surface roughness:Ra6.3-12.5

Drilled hole diameter mm	Tube OD mm	Tube code
24.1-26.4	22	803
26.4-28.7	24	804
28.7-31.0	26	805
31.0-33.3	28	806
33.3-36.2	30	807
36.2-39.6	33	808
39.6-43.0	36	809
43.0-47.0	39	810
47.0-51.7	43	811
51.7-56.2	47	812
56.2-65.0	51	813
65.0-67.0	56	814
67.0-73.0	62	815
73.0-80.0	68	816
80.0-87.0	75	817
87.0-100.0	82	818
100.0-112.0	94	819
112.0-124.0	106	820
124.0-136.0	118	821
136.0-148.0	130	822
148.0-160.0	142	823
160.0-171.9	154	824
172.0-183.9	166	825
184.0-195.9	178	826
196.0-207.9	190	827
208.0-219.9	202	828
220.0-231.9	214	829
232.0-243.9	226	830
244.0-255.9	238	831
256.0-267.9	250	832
268.0-279.9	262	833