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cutting tools, drill bits, twist drills DIN 338, twist drills DIN 1897, twist drills DIN 340, twist drills DIN 345, double ended drills, spot weld drills, center drills, countersinks, threading tools, hand taps, machine taps, UNC/UNF taps, round dies, hex dies, core drills, annular cutters, magnetic drills, hole drills, hole cutters, HSS hole saws, TCT hole saws, TCT cutters, TCT annular cutters, TCT rail cutters, machine tools, cobalt drills, left hand drills DIN 338, stub drills, extreme long drills, HSS turbo drills DIN 338, NC spotting drills, HSS twist drills DIN 1869, solid carbide drills DIN 338, countersinks DIN 335C, countersinks DIN 373, countersinks with cross hole, HSS sheet metal drills, HSS step drills, HSS step drills with spiral flute, HSS NPT taps, HSS hand taps ISO 529, HSS machine taps DIN 371/DIN376, HSS threading bits, HSS combined taps and drills, tap wrench DIN 1814, die holder DIN 225, ratchet tap wrench, masonry drills DIN 8039, SDS-plus hammer drills, SDS chisels, glass drills, core bits, hollow core drills, HSS end mills, end mills, milling cutters, drill sets, tool sets, wood bits, brad point wood bits, auger bits, auger bits lewis type, auger bits SDS shank, forstner bits, TCT forster bits, plug cutters, wood tool bits, indexable inserts, rolling dies, digital calipers, micrometer, dial indicator, magnetic base,

 

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

 
Twist drill bits with gold and black coating

GCH007

Special Gold and Black coating, HSS, fully ground, with round or triangle shank
 

 
 
HSS Slow Spiral Twist Drills DIN 338 (GCH011)

HSS Slow Spiral Twist Drills DIN 338
Type H, with split point
Applications: only for Brass cutting

 

 
 
HSS Left Hand Cutting Drills DIN 338 (GCH012)

HSS Left Hand Cutting Drills DIN 338,
fully ground, bright finish, with split point

 

 
 
HSS Turbo drills DIN 338 (GCH013)

 HSS Turbo drills DIN 338, fully ground,
quick cutting, for Alu cutting
 

 
 
HSS-R Twist Drills DIN1897 (GCH021)

HSS-R Twist Drills DIN1897
Roll-forged, black finish,with normal point angle 1180

 
 
HSS twist drill DIN 1897 GCH022

HSS twist drill DIN 1897
Fully ground, bright finish, with split point

Tin coated.
 

 
 
HSS-E Cobalt Drills M35 (Cobalt 5%) DIN1897 (GCH023)

HSS-E Cobalt Drills M35 (Cobalt 5%) DIN1897
fully ground, amber finish, with split point 1350

 
 
HSS NC Spotting drills (GCH031)

HSS-E NC Spotting Drills
point angle 900 and 1200, 5% cobalt, bright finish
Applications:Special drills for accurate and fast spotting on NC-machines, Jig drills etc, suitable for centering and chamfering of tapping holes in one operation.

 




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Factory add: No. 258, Yihua Road, Pudong, Shanghai, China 201201
Tel: 0086-21-60542168/0086-13818080320
Fax:0086-21-50521415
www.greatcutting.com