Datasheet

2
TERRAX by RUKO
Gold surface
bright / black surface
bright Black surface
The titanium nitride coating is a universally usable standard coating.
It has a 300-400 % longer service life than non-coated materials.
Cooling is recommended.
Shank: WeldonShank: cylindricalShank: Morse taper
Heavy-duty high speed steel for drilling holes in easy-to-machine materials with a
strength of up to 900 N/mm2.
same as HSS, drill is rolled.
Same as HSS, drill is ground.
Heavy-duty high speed steel with 5 % cobalt content.
High ductility and heat resistance, for drilling holes in difficult-to-machine materials
with a strength of up to 1100 N/mm2.
Twist drills:
right hand cutting
Point angle e.g. 130°
Short twist drills
with straight shank
Shape C: Split point
Helix angle: 25-30º
Point angle: 118º
Point cut: form C
Step angle, e.g. 90º
Step drills:
right hand cutting
Point angle: 118°
Countersink angle: 90° Cutting edges: 3
Taper and deburring countersin-
kers: right hand cutting
Tenacity classes
Type B,
4 - 5 threads with progressive
tap
Type C / 35° right-hand spiral
flutes,
2 - 3 threads
Thread-cutting tools:
right hand cutting
Core drills:
right hand cutting
Drilling depth
e.g. 30,0 mm
Overview of symbols
TWIST DRILLS
≥ Ø 3,0 mm
C
N
130°
DIN
338
90°
118°
800
N/mm²
90°
C
B
HSS
-
R
HSS
HSS
-
G
HSSE
Co 5