Tungsten Carbide Burrs
TC Burrs for Tough Applications
The 3R and 3RS cuts represent a new PFERD
Their extremely high impact resistance
product line designed especially for tough
means that they are perfectly suited for use
operating conditions in dockyards, foundries
as long shank variants. Available as special
and on steel constructions.
products with 150 or 200 mm shaft length.
Developed specifically for applications
Advantages
involving high impact loads, the new 3R and
3RS cuts are the latest addition to the exist-
Innovative, special cuts providing excep-
ing PFERD range.
tional impact resistance.
These extremely robust, high-performance
Application examples
cut patterns minimise tooth chipping/break-
age, splintering and burr head failures.
High-impact applications due to long shank
The 3R and 3RS cuts can be used on materi-
design.
als up to 55 HRC.
Heavy-duty applications, due to angled
These products can also be used at low
working.
speeds.
High angle of surface contact.
Milling of narrow contours.
Cut 3R
Cut 3RS
Coarse, aggressive machining,
Coarse machining,
with high stock removal.
with smooth milling performance.
Recommended rotational speed range
To determine the recommended cutting speed
Select the cut.
Select the required burr diameter.
[m/min], please proceed as follows:
Establish the cutting speed range.
The cutting speed range and the burr
Select the material group that is to be
diameter determine the recommended
machined.
To determine the recommended rotational
rotational speed range [RPM].
Determine the type of application.
speed [RPM], please proceed as follows:
Material groups
Application
Cut
Cutting speed
Non-hardened,
Construction steels, carbon
3R
non-heat treated
steels, tool steels, non-alloyed
steels up to
250 - 600 m/min
steels, case-hardened steels,
1200 N/mm²
Coarse machining =
3RS
Steel,
(< 38 HRC)
cast steels
high stock removal
cast steel
Hardened, heat-
with impact load
3R
treated steels
Tool steels, tempering steels,
exceeding
250 - 350 m/min
alloyed steels, cast steels
1200 N/mm²
3RS
(> 38 HRC)
Nickel based alloys, cobalt
Coarse machining =
3R
Non-ferrous
High-temperature
based alloys (aircraft engine and
high stock removal
250 - 450 m/min
metals
resistant materials
turbine construction)
with impact load
3RS
Cast iron with flake graphite
3R
EN-GJL (GG), with nodular
Coarse machining =
Grey cast iron,
graphite cast iron EN-GJS
Cast iron
high stock removal
250 - 600 m/min
white cast iron
(GGG), white annealed cast iron
with impact load
EN-GJMW (GTW), black cast
3RS
iron EN-GJMB (GTS)
Example
Cutting speed [m/min]
Tungsten carbide burr, cut 3R,
250
350
450
600
Diameter 12 mm.
Coarse machining of non-hardened, non-heat
Dia. [mm]
RPM
treated steels.
8
10.000
14.000
18.000
24.000
Cutting speed: 250 - 600 m/min
10
8.000
11.000
14.000
19.000
Rotational speed: 7.000 - 16.000 RPM
12
7.000
9.000
12.000
16.000
16
5.000
7.000
9.000
12.000
30
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Tungsten Carbide Burrs
TC Burrs for Tough Applications
Cylindrical burr according to DIN 8032 with
Cylindrical shape with end cut ZYAS
circumferential and end cut.
Ordering example:
EAN 4007220769997
ZYAS 0820/6 C3R
d1
d2
l2
l1
Order No.
Cut
Shank
Burr dia. x
Overall length
dia.
length
l1
3R
d2
d1 x l2
[mm]
[mm]
[mm]
EAN 4007220
Shank ø 6 mm
ZYAS 0820/6
769997
6
8 x 20
60
1
25
ZYAS 1020/6
770023
6
10 x 20
60
1
33
Shank ø 8 mm
ZYAS 1225/8
770054
8
12 x 25
65
1
56
Flame shape burr according to ISO 7755/8.
Flame shape B
Ordering example:
EAN 4007220770061
B 0820/6 C3R
r
d1
d2
l2
l1
Order No.
Cut
Shank
Burr dia. x
Overall length
Radius
dia.
length
l1
r
3R
d2
d1 x l2
[mm]
[mm]
[mm]
[mm]
EAN 4007220
Shank ø 6 mm
B 0820/6
770061
6
8 x 20
60
1,5
1
22
B 1230/6
770085
6
12 x 30
70
2,1
1
48
Shank ø 8 mm
B 1230/8
770092
8
12 x 30
70
2,1
1
50
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31
Tungsten Carbide Burrs
TC Burrs for Tough Applications
Ball shape burr according to DIN 8032.
Ordering example:
Ball shape KUD
EAN 4007220770160
KUD 1210/6 C3R
d1
d2
l2
l1
Order No.
Cut
Shank
Burr dia. x
Overall length
dia.
length
l1
3R
d2
d1 x l2
[mm]
[mm]
[mm]
EAN 4007220
Shank ø 6 mm
KUD 1210/6
770160
6
12 x 10
51
1
30
Shank ø 8 mm
KUD 1210/8
770177
8
12 x 10
51
1
35
KUD 1614/8
770184
8
16 x 14
54
1
53
General-use shape, combination of cylindrical
Cylindrical shape with radius end WRC
and ball shapes according to DIN 8032.
Ordering example:
EAN 4007220770108
WRC 0820/6 C3R
Please state required cut.
d1
d2
l2
l1
Order No.
Cuts
Shank
Burr dia. x
Overall
dia.
length
length
3R
3RS
d2
d1 x l2
l1
[mm]
[mm]
[mm]
EAN 4007220
Shank ø 6 mm
WRC 0820/6
770108
-
6
8 x 20
60
1
25
WRC 1020/6
770115
-
6
10 x 20
60
1
32
WRC 1225/6
770122
770139
6
12 x 25
65
1
52
Shank ø 8 mm
WRC 1225/8
769881
770153
8
12 x 25
65
1
59
32
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Tungsten Carbide Burrs
TC Burrs for Tough Applications
Pointed tree shape according to DIN 8032.
Pointed tree shape SPG
Ordering example:
EAN 4007220770252
SPG 1020/6 C3R
Please state required cut.
flattened tip
d1
d2
l2
l1
Order No.
Cuts
Shank
Burr dia. x
Overall
dia.
length
length
3R
3RS
d2
d1 x l2
l1
[mm]
[mm]
[mm]
EAN 4007220
Shank ø 6 mm
SPG 1020/6
770252
770269
6
10 x 20
60
1
25
SPG 1225/6
770276
-
6
12 x 25
65
1
40
Shank ø 8 mm
SPG 1225/8
770283
-
8
12 x 25
65
1
47
SPG 1625/8
770290
770306
8
16 x 25
65
1
64
Tree shape burr according to DIN 8032.
Tree shape with radius end RBF
Ordering example:
EAN 4007220770191
RBF 0820/6 C3R
Please state required cut.
r
d1
d2
l2
l1
Order No.
Cuts
Shank
Burr dia. x
Overall
Radius
dia.
length
length
r
3R
3RS
d2
d1 x l2
l1
[mm]
[mm]
[mm]
[mm]
EAN 4007220
Shank ø 6 mm
RBF 0820/6
770191
-
6
8 x 20
60
1,2
1
21
RBF 1020/6
770207
-
6
10 x 20
60
2,5
1
28
RBF 1225/6
770214
770238
6
12 x 25
65
2,5
1
43
Shank ø 8 mm
RBF 1225/8
770221
770245
8
12 x 25
65
2,5
1
49
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Tungsten Carbide Burrs
TC Burrs for Tough Applications
Conical shape with radius end according to
Conical shape with radius end KEL
DIN 8032.
Ordering example:
EAN 4007220770320
KEL 1225/6 C3R
α
r
d1
d2
l2
l1
Order No.
Cut
Shank
Burr dia. x
Overall
Angle
Radius
dia.
length
length
a
r
3R
d2
d1 x l2
l1
[mm]
[mm]
[mm]
[mm]
EAN 4007220
Shank ø 6 mm
KEL 1225/6
770320
6
12 x 25
65
14°
3,3
1
39
Shank ø 8 mm
KEL 1225/8
770337
8
12 x 25
65
14°
3,3
1
47
Oval burr according to DIN 8032.
Oval shape TRE
Ordering example:
EAN 4007220770344
TRE 1016/6 C3R
Please state required cut.
r
d 1
d 2
l 2
l 1
Order No.
Cuts
Shank
Burr dia. x
Overall
Radius
dia.
length
length
r
3R
3RS
d2
d1 x l2
l1
[mm]
[mm]
[mm]
[mm]
EAN 4007220
Shank ø 6 mm
TRE 1016/6
770344
770382
6
10 x 16
56
4,0
1
27
TRE 1220/6
770351
-
6
12 x 20
60
5,0
1
41
Shank ø 8 mm
TRE 1220/8
770368
-
8
12 x 20
60
5,0
1
48
34
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