◙ 4-12/20/32mm HSS Titanium Coated Step Drill Bit Drilling Power Tools Metal High Speed Steel Wood Hole Cutter Step Cone Drill
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320.00 179.00 บาท
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- length：as the picture shows
- is-customized：Yes
- Use：Metal Drilling
- Material：High Speed Steel
- Model Number：Steel Step Cone Drill Countersink Titanium Bit
- DIY Supplies：Woodworking
- Type：Center Drill Bit
- Brand Name：GOOGZON
- Origin：Mainland China
- Certification：NONE
- Note:：send according to order options
- 100- Brand New and High Quality
- Made from high quality HSS steel
- Ideal for using to cut holes in a variety of materials including brass wood plastic etc.
- Titanium coated to reduce heat
- Heat treated and highly polished. Drills perfectly round holes in steel brass plastic wood etc.
- 6 sided shanks design in order to prevent slippage when in chuck
- Two flute design drives faster smoother and cleaner cuts each step is clearly labeled with the depth diameter in steps
- Function: Deburring Chamfering Cutting or expanding holes
- Supporting tools: Pistol drill Hand drill Charging drill Bench drill. (Water injection cooling while working it can effectively extend the service life of the drill bit especially in the case of continuous drilling)
- Rotating speed:
- 4-12 speed:260-400
- 4-20 speed:180-240
- 4-32 speed:90-160
- Attention:Because of the outer diameter of each step of the step drill is gradually expandedthen the corresponding cutting resistance and linear velocity will also be gradually increased.
- Owing to the step drill is completely dependent on the inclined edge that is only with 1mm lengthIf the feed speed is too fast when drillingit will be easily to be annealing caused by abrasion of the oblique edge.
- Please give a downward force when drilling do not press down too hard to avoid the edge wearing.
- Suitable material: Workpieces with general hardness such as wood plastic PVC plate iron plate thickness within 3MM. Please note that stainless steel and spring steel are not applicable. Not for quenching.
- Length:
- 4-12mm Length: Approx. 6.5cm/ 2.56-
- 4-20mm Length: Approx. 7.7cm/ 3.0-
- 4-32mm Length: Approx. 10.0cm/ 3.94-
- 4-42mm Length: Approx. 98.5cm/ 3.8inch
- Round handle diameter: 10mm
- Hexagonal handle diameter: 6.35mm
- Sizes:
- 4-32mm :(4mm 6mm 8mm 10mm 12mm 14mm 16mm 18mm 20mm 22mm 24mm 26mm 28mm 30mm 32mm) 15 Steps
- 4-20mm:( 4mm 6mm 8mm 10mm 12mm 14mm 16mm 18mm 20mm)9 Steps
- 4-12mm: (4mm5mm 6mm7mm 8mm 9mm10mm 11mm12mm) 9 Steps
