1369 / 1562
8/61
8
Abrasives
Tungsten carbide burr (rotor cutter) DIN 8032/8033
Applications recommendations:
• Enables high turning speeds. Please note our
turning/cutting speed recommendations. With stationary or countersunk
jobs with 360°-wrap this burr can be exceptionally used at speeds below
3000 min
-1
.
• Only use with rigid clamping systems/drives; tool beat and rattle leads
to premature wear.
• The contact surface of the burr to the workpiece should not exceed one
third of the circumference during processing. An excessively large wrap
angle of > 1/3 leads to restless milling behaviour. This leads to tooth
breakage.
• For poor heat conductors such as stain-
less steel, titanium alloys etc. we recom-
mend a significant reduction in turning
speed to avoid damaging the tool. Blue
staining to the shank and tool should be avoided.
• For low stock removal (deburring, chamfering, light surface treatment),
the speed can be significantly increased.
• For heavily lubricating materials it is sensible to use lubricants (grease,
petroleum, chalk or other) to prevent the tooth system clogging.
Carbide burrs can, in principle, be reground. Regrinding of small and
miniature burrs is not advisable for reasons of cost.
Material groups
Processing
Toothing
Cutting speed
Steel,
cast steel
unhardened, untem-
pered steels
up to 1200 N/mm
2
(< 38 HRC)
Construction steels, carbon steels,
tool steels, unalloyed steels,
case-hardened steels, cast steel
Course machining =
more material removal
3
450– 600 m/min
C/3 PLUS
Fine machining =
less material removal
3
500– 600 m/min
hardened, tempered
steels above 1200
N/mm
2
(> 38 HRC)
Tool steels, tempering steels,
alloyed steels, cast steel
Course machining =
more material removal
3
250– 350 m/min
C/3 PLUS
4
Fine machining =
less material removal
5
350– 450 m/min
Stainless
steel
INOX
Rust and acid resis-
tant steels
austenitic and ferritic stainless steels
Course machining =
more material removal
3
250– 350 m/min
C/3 PLUS
4
INOX
450– 600 m/min
Fine machining =
less material removal
5
350– 450 m/min
Non-ferrous
metals
Soft NF metals,
NF metals
Alu alloys, brass, copper, zinc
Course machining =
more material removal
Alu
600–1100 m/min
Special Alu
400– 500 m/min
Fine machining =
less material removal
Alu
800–1100 m/min
Hard NF metals
Bronze, titanium/titanium alloys, hard
Alu alloys (higher Si content)
Course machining =
more material removal
3
250– 350 m/min
4
Fine machining =
less material removal
3
350– 450 m/min
Course machining =
more material removal
Alu
600–1150 m/min
Special Alu
400– 500 m/min
Fine machining =
less material removal
Alu
900–1100 m/min
heat-resistant
materials
Nickel-based and cobalt-based alloys
(Engine and turbine construction)
Course machining =
more material removal
C/3 PLUS
300– 450 m/min
4
Fine machining =
less material removal
5
350– 500 m/min
Cast iron
gray cast iron,
white cast iron
Cast iron with lamellar graphite EN-GJL (GG),
with nodular graphite/ductile iron EN-GJS
(GGS), white malleable EN-GJMVV (GTW),
black malleable EN-GJMB (GTS)
Course machining =
more material removal
3
450– 600 m/min
C/3 PLUS
Fine machining =
less material removal
3
500– 600 m/min
Synthetics,
other
materials
fibre-reinforced plastics (GFP/CFP),
thermoplastic plastics, hard rubber
Course machining =
more material removal
Alu
500–1100 m/min
Special Alu
500– 900 m/min
Fine machining =
less material removal
Alu
500–1100 m/min
Example:
HM burr, tooth system
3 PLUS, ∅ 12 mm.
Course machining
of non-hardened,
untempered steels.
Cutting speed:
450–600 m/min.
Speed range:
12000–16000 min
-1
.
HM burr, tooth system
Alu, ∅ 12 mm.
Course machining
of hard NF metals.
Cutting speed:
600–1100 m/min.
Speed range:
16000–30000 min
-1
.
Cutting speeds
m/min
250 300 350 400 450 500 600 900
Burr
∅ mm
Revolutions
min
-1
2
40000 48000 56000 64000 72000 80000 95000 143000
3
27000 32000 37000 42000 48000 53000 64000 95000
4
20000 24000 28000 32000 36000 40000 48000 72000
6
13000 16000 19000 21000 24000 27000 32000 48000
8
10000 12000 14000 16000 18000 20000 24000 36000
10
8000 10000 11000 13000 14000 16000 19000 29000
12
7000 8000 9000 11000 12000 13000 16000 24000
16
5000 6000 7000 8000 9000 10000 12000 18000
20
4000 5000 6000 6000 7000 8000 10000 14000
Cutting speed only for Alu/Special Alu
m/min
400
500
600
900
1100
Burr
∅ mm
Revolutions
min
-1
3
42000
53000
64000
95000
117000
6
21000
27000
32000
48000
59000
8
16000
20000
24000
36000
44000
10
13000
16000
19000
29000
35000
12
11000
13000
16000
24000
30000
16
8000
10000
12000
18000
22000
Tooth system C/3
PLUS (to DIN MX)
Tooth system 5
(to DIN F)
Tooth system 3
(to DIN MY)
Tooth system Alu
Tooth system 4
(to DIN MX)
Tooth system
Special Alu
Tooth system
INOX
Observe safety
recommendations:
Please observe the
recommended
turning speeds!
Carbide burrs
Not all items are available in every country.
1369