- no delamination- burr-free surfaces- long tool life

CR 100 Milling Cutters for fiber-reinforced plastics
GUHRING - your World-Wide PartnerCR 100 –The efficient high-performance milling
cutter for composite machining
The economical machining of modern materials such as carbon fibre reinforced plastics (CFRP) requires hightech tools operating extremely efficiently. Above all, it is important to avoid delamination or fibre projections on
the component as well as thermal damage. Especially with CFRP types with less resin content and unidirectional
orientation of fibres, the fibres are very easily torn from the composite during machining.

Typical delamination on a milled CFRP workpiece edge

Milled CFRP workpiece edge without delamination machined witha Guhring CR 100 end mill

Therefore, Guhring developed an innovative cutting edge geometry for the CR 100 end mill. Combined with adiamond coating it enables a reliable machining process of materials without delamination with smooth runningand high cutting speeds.

Your advantages

no delamination
very good, burr-free surfaces
long tool life
high feed rates and cutting speedssmooth runningApplication exampleWorkpiece: CFRP components
Tool:
CR 100 Ø 8 mm (no. 6719)
Application / parameters:
slotting, roughing and edging in one pass
Coolant: air
Feed:3,600 mm/min
No. of revolutions: 5,000 n/min

Result:high dimensional stability

increase of tool life

no delamination

increase of removal rate

For each application the appropriate
geometry
CR 100Guhring no.

6717

Guhring std.
shank to DIN 6535 HA
VHM ultrafine
diamond coatedd2

d1

CR 100without end face teeth
for slotting and edging

l2
l1

d1 (e10)d2 (h6)l1l2

Zmmmmmmmm4.0006.000
8.000
10.00012.00016.000

6.000
6.000
8.000
10.00012.00016.000

57.00
65.00
75.00
80.00
93.00
108.00

10.00
15.00
20.00
25.00
32.00
34.00

6810
12
14
14

Availability

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CR 100Guhring no.

6719

centre cutting
Guhring std.
shank to DIN 6535 HA
VHM ultrafine
diamond coated

CR 100centre cutting

d2

d1

for slotting, edging andoblique plunging

l2
l1

d1 (e10)d2 (h6)

l1

l2

mm

mm

mm

mm

4.000
6.000
8.000
10.00012.00016.000

6.000
6.000
8.000
10.00012.00016.000

57.00
65.00
75.00
80.00
93.00
108.00

10.00
15.00
20.00
25.00
32.00
34.00

Z6
8
10
12
14
14

Availability

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Cutting rates
fz (mm/min)Material

Type of application

Cutting speed(vc)fiber-reinforced plastics, CFRP / GFK / aramid fibres

Slotting*
ap 1 x d, ae 1 x d

1400.015 0.030 0.040 0.050 0.060 0.080

fiber-reinforced plastics, CFRP / GFK / aramid fibres

Roughing*
ap 2 x d, ae 0.5 x d2000.020 0.035 0.050 0.060 0.070 0.090

Material

Type of application

Cutting speed(vc)Drilling ap 1 x d (with deeper holes
always peck after 0.5 x D)

125

fiber-reinforced plastics, CFRP / GFK / aramid fibres*Optimal chip evacuation with compressed air and extraction reduces machining temperature and increases tool life.

4

68

101216

F/U (mm)
468

1012160.070 0.100 0.120 0.150 0.180 0.200

CR 100
Guhring no.

6720

with 118° drill point
Guhring std.
shank to DIN 6535 HA
VHM ultrafine
diamond coated

CR 100with drill point

d2d1

Especially for plunging andsubsequent profiling operations.

l2l1d1 (e10)d2 (h6)

l1l2

Zmm

mm

mm

mm

4.000
6.000
8.000
10.00012.00016.000

4.000
6.000
8.000
10.00012.00016.000

55.00
65.00
75.00
80.00
93.00
108.00

12.00
18.00
24.00
30.00
36.00
48.00

68
10
12
14
14

Availability

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CR 100Guhring no.

6718

with rear facing air-cooling ducts
Guhring std.
shank to DIN 6535 HA
VHM ultrafine
diamond coated

CR 100 Air
without end face teethd2

d1

Special, rear facing air-coolingducts ensure an optimal
evacuation of the CFRP dust.

l2
l1

d1 (e10)d2 (h6)l1

l2mm

mmmmmm

6.000
8.000
10.00012.00016.000

6.000
8.000
10.00012.00016.000

70.00
80.00
90.00
110.00130.00

24.00
32.00
40.00
48.00
64.00

Z

8
10
12
14
14

Availability

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Guhring Tools for the machining of CFRP
Guhring’s CR 100 high-performance end mill for CFRP and similar composites is the optimal
solution for milling applications in the aerospace industry, the energy technology, theautomotive and ship building industry and many other areas.
In addition to the CR 100 high-performance end mill Guhring has further tools for themachining of carbon fibre reinforced plastics included in the range.

148 816/1392-IX-20 • Printed in Germany • 2013

Together with the customer, Guhring also develops made-to-measure special tools optimally
adapted to the relevant requirements. We will be happy to advise you on your application andthe correct tool. Please contact us!

Guhring KG
P.O. Box 100247 • 72423 Albstadt
Herderstraße 50-54 • 72458 Albstadt
Tel. +49 74 31 17-0
Fax +49 74 31 17-21 279
info@guehring.de
www.guehring.de

No liability can be accepted for printing errors or technical changes of any kind.
Our Conditions of Sale and Terms of Payment apply. Available on request.