Darmet - Cutting Tools

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Milling inserts SPKR

 

Properties and application:

Specifications:

SPKR 
Insert shape and angle
S 90° shape s 90 
Normal clearance angle
P 11° angle p 11 
Tolerance class
K l ? 0,08
m ? 0,013
s ? 0,025
tolerance sh s 
Chipbreaker and clamping type
R type R 

 

productivity feed coolant
To increase productivity it is recommended to increase feed while respecting cutting speed Please use coolant when machining suitable material groups

 

Operations
frezowanie czolowe
Surfacing

 

DesignationGradelsP/rDCutting direction
SPKR 1203 EDTR PL 30 12 3,18 75° 15° right
SPKR 1204 EDTR PL 30 12 4,76 75° 15° right

 

SPKR 1203 EDTR i SPKR 1204 EDTR
Material groupGroup numberBrinell hardness
[HB]
ap [mm]Feed [mm/turn]Vc [m/min]
minmaxminmaxminmax
Low carbon steel 1 150 0,5 7,0 0,18 0,32 190 350
180 7,0 0,32 300
210 7,0 0,32 260
Alloy steel 2 180 0,5 7,0 0,15 0,30 150 240
230 7,0 0,30 210
280 0,5 7,0 0,15 0,28 130 190
320 7,0 0,28 170
High alloy steel 3 220 0,5 7,0 0,12 0,28 90 150
280 7,0 0,28 130
320 0,5 7,0 0,12 0,25 60 110
350 7,0 0,25 90
400 0,5 5,0 0,10 0,22 40 80
480 3,0 0,20 70
550 1,5 0,28 60
Austenitic stainless steel
4 210 - 250 0,5 5,0 0,18 0,25 190 250
5 230 - 270 0,5 5,0 0,15 0,20 160 210
6 - 0,5 10,0 0,12 0,18 70 120
Ferritic stainless steel
7 annealed 0,5 5,0 0,12 0,25 150 210
Martensitic stainless steel
8 annealed 0,5 5,0 0,12 0,25 150 230
treated 0,5 5,0 0,12 0,23 90 170
Grey cast iron 9 140 - 230 0,5 7,0 0,15 0,32 150 240
220
190
Nodular cast iron 10 210 0,5 7,0 0,12 0,27 100 200
260 160
310 130
450 0,5 3,0 0,10 0,20 30 60
Nickel based alloys
11 - 0,5 10,0 0,12 0,18 25 35
28 38
40 65
Titanium based alloys
12 - 0,5 10,0 0,12 0,20 35 60
0,18 28 40

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