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Roll Forged HSS-drills have a high elasticity due to their production method. They have a big and robust core thickness and are the conventional tool for professional drilling under normal conditions.Fully ground HSS-Drills are made of hardened solid material. The reinforced core-section gives a better fracture-stability and enables professional drilling under narrow tolerances and longer life-time of tool. Fully ground drills should be used wherever roll-forged drills have reached their limit of performance. All fully ground drills are produced with "Split Point”. The main advantages are: Direct drilling without prior centering, safe pilot hole drilling even on round or slanting surfaces, less feeding power, increase of drilling progress, better chip removal, no jamming of the main cutting-edge. Do not overheat metal drill-bits. This can only be avoided by usage special cutting coolants (high-alloyed and heat-resistant materials) or cooling emulsion (normal steel). Brass, cast iron and most plastics can be drilled without coolants. A correct tip grind is absolutely necessary for economical drilling. We can only recommend regrinding by machine, because regrinding by hand is too imprecise and results in too early wear of tool.

Safety advice:
Always wear safety-goggles and noise-protection.

Twist drills

HSS Morse Taper Shank Drills DIN345,

HSS Morse Taper Shank Drills DIN345,
milled flute, black and bright finish, with normal point angle or web point

HSS Morse Taper Shank Drills DIN345

Fully ground, bright finish, with normal point
angle or web point
Applications:High heat resistant and ideal used for drilling steel, cast iron and heat-treated steel etc

HSS-G Double Ended Drills

HSS-G Double Ended Drills
bright Finish, fully ground, with split point
Applications:Specially use for drilling thin materials like sheet metal, car body etc

HSS-G Center Drills DIN333A


Applications: Standard center drills for making center holes 
according to DIN 332
Size Total Length Flute Length Size Total Length Flute Length
mm mm mm mm mm mm
1.00 31.50 3.15      
1.25 31.50 3.15 3.15 50.00 8.00
1.60 35.50 4.00 4.00 56.00 10.00
2.00 40.00 5.00 5.00 63.00 12.50
2.50 45.00 6.30 6.30 71.00 16.00
GCH073 HSS-G Center Drills DIN333B
fully ground, silver finish
Applications: Standard center drills for making center holes
Size Total Length Flute Length Size Total Length Flute Length
mm mm mm mm mm mm
1.00 35.50 4.00      
1.60 45.00 6.30 4.00 67.00 14.00
2.00 50.00 8.00 5.00 75.00 18.00
2.50 55.00 10.00 6.30 80.00 20.00
3.15 60.00 11.20 8.00 90.00 25.00


HSS-R Twist Drills Roll Forged DIN338


HSS-R Twist Drills Roll Forged DIN338
roll-forged, black finish, with normal point angle 1180



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Factory add: No. 258, Yihua Road, Pudong, Shanghai, China 201201
Tel: 0086-21-60542168/0086-13818080320