40×D and 50×D ! The new universal solid carbide deep hole drills from GARANT INNOVATION Machining Prices valid up to 31. 07. 2011 EN_1008-00210-Dm-In_FS.indd 1 10.09.2010 14:29:58

Solid carbide deep hole drills Universal high performance drills HPC Solid carbide HPC deep hole drill plain shank

Version: Spiral fluted, with 4 guide lands and internal cooling channels. New generation of high performance deep hole drills in the HPC range. Application: Version with HB and HE shankavailable without surcharge. ■■^■1 Shape HB: Please add product code No. 129100 HB. ■■V Shape HE: Please add productcode No. 129100HE. (For ordering example see main catalogue, page 18). Solid carbide HPC deep hole drill plain shank This advertising brochure, its graphic layout and the item numbering system used are protected by copyright. Reprinting and reproduction of any kind - even as extracts - is permitted...

Use GARANT deep hole drills 40×D and 50×D correctly ! 1. Pilot hole drilling Select the appropriate pilot drill No. 12 2650 (for steel) or No. 12 2308 (for alu) for the pilot hole (pilot hole has to be 0.02 mm larger than the subsequent deep hole drill ⌀). The minimum depth of the pilot hole should be min. 4×D for ⌀ ≤ 5 mm, otherwise min. 3×D. 2. Penetration of pilot hole with deep hole drill Penetration into the pilot hole with low speed (n = 300 rpm) and reduced feed rate (v f = 1000 mm/min) up to approx. 1–2 mm before the bottom of the hole. Then start to increase the speed (steplessly, if...