TH Coating Cast iron Drill for small-diameter boring Carbon steel Alloy steel Stainless steel Mold making Pre-hardened steel Parts processing Applications Boring MINIATURE DRILL High-accuracy boring of small holes Uses a NEW flute shape form and NEW coating technology. Long-awaited small-diameter drill with OH (oil hole) WHMB-TH φ1～φ2 L/D=3~30 (147 items

Features of MINIATURE MINIATURE DRILL WHMB drills small-diameter holes with high efficiency and high accuracy. New flute shape form specifically for small-diameter drills High-accuracy flute shape form enables high-accuracy hole boring. Large oil hole Achieves high coolant output. Advanced double-margin shape Improves guide characteristics to improve hole accuracy. Uses New coating technology. High-hardness coating for small-diameter tools is formed using new technology.

DRILL WHMB New flute shape form specifically for small-diameter drills ・Large oil hole ［PAT.P］ High efficiency flute shape form ●New flute shape form (High-accuracy flute shape form) 　Suppresses tool wandering by improving 　biting characteristics. ●Large oil hole 　Suppresses chip clogging through 　high-output coolant discharge. Advanced double-margin shape Double margin position is put on flute tip side to improve guide characteristics. WHMB-TH High-accuracy flute shape form + Large oil hole + Advanced double-margin form NEW Comparison of hole waviness New coating technology (TH coating) TH coating...

φDs Flute lengthR Overall length L WHMB Item Code Size (mm) Stock Tool Flute Overall Shank dia. length length dia. L Ds Dc R Item Code Carbide Coated Size (mm) Stock Tool Flute Overall Shank dia. length length dia. L Ds Dc R Item Code Size (mm) Stock Tool Flute Overall Shank dia. length length dia. L Ds Dc R

Cutting conditions Cutting speed (vc) m/min Revolution Cutting speed (vc) m/min Revolution Cutting speed (vc) m/min Revolution Cutting conditions Cutting speed (vc) m/min Revolution Cutting speed (vc) m/min Revolution Cutting speed (vc) m/min Revolution Setting of Cutting conditions Aluminiun alloy Aluminiun alloy • This standard cutting condition table is for general guidance regarding cutting conditions. The conditions should be adjusted according to the machining shape, application, machine used, etc. for the actual machining. • For the cutting fluid, water-based cutting fluids are recommended....

Field Data ● Example of hole curvature in acrylic【φ1.0mm, 20D type】 Cutting condition vc=30m/min、 n=9,549min-1, f =0.02mm/rev, v f =190mm/min, Machining depth=18mm, Pilot hole depth=1mm、 Non step machining, Water base coolant, Internal coolant pressure 3MPa Excellent straightness Conventional 1 High-accuracy flute shape form achieves higher hole accuracy than conventional products. ● Stainless steel (SUS304) machining example【φ1.0mm, 20D type】 vc=30m/min, n=9,549min-1, f =0.02mm/rev、 f =190mm/min, v Machining depth=18mm, Pilot hole depth＝1mm, Non step machining, Water base coolant, Internal coolant...

● Stainless steel (SUS630) machining example 03WHMB0170-TH　φ1.7mm 3D type Cutting condition vc=30m/min, n=5,617min-1, f =0.0425mm/rev、 v f =239mm/min, Machining depth=5mm, Non step machining, Water base coolant, Internal coolant pressure 3MPa After machining 800 holes, continued machining is possible 30WHMB0170-TH　φ1.7mm 30D type Cutting condition vc=30m/min, n=5,617min-1, f =0.025mm/rev、 v f =143mm/min, Machining depth=48mm, Non step machining, Water base coolant, Internal coolant pressure 3MPa After machining 200 holes, continued machining is possible ● Chrome molybdenum steel (SCM420) machining...

The diagrams and table data are examples of test results, and are not guaranteed values. Attentions on Safety 1. Cautions regarding handling (1) When removing the tool from its case (packaging), be careful that the tool does not pop out or is dropped. Be particularly careful regarding contact with the tool flutes. (2) When handling tools with sharp cutting flutes, be careful not to touch the cutting flutes directly with your bare hands. 2. Cautions regarding mounting (1) Before use, check the outside appearance of the tool for scratches, cracks, etc. and that it is firmly mounted in the collet...