FINE BORING HEADS
SERIES 310—INSERT HOLDERS 30º
C 1
Head Type
Catalog Number
Reference Number 10.689.197 11.380.306 11.380.341 11.380.587 11.380.587 Reference Number 11.380.326 11.380.327 11.380.328 11.380.329 11.380.330 11.380.330 Reference Number 11.380.321 11.380.322 11.380.323 11.380.324 11.380.325 11.380.325
øD
E
C 1
C 2
Insert
C 2
ENH2-1T30 ENH3-1T30 ENH4-1T30 ENH5-1T30 ENH6-1T30 ENH6-1T30
EWN25 EWN32
1.102-1.417 1.417-1.811 1.772-2.283 2.205-2.874 2.677-3.937 3.937-6.024
.274 .370 .398 .453 .492 .492
1.398 1.654 1.929 2.244 2.795 3.425
1.173 1.311 1.587 1.906 2.453 3.093
TP07
EWE/D/N41 EWE/D/N53 EWE/D/N68 EWE/N100
TC11
SERIES 310—INSERT HOLDERS 45º
C 1
Head Type
Catalog Number
øD
E
C 1
C 2
Insert
C 2
ENH2-1T45 ENH3-1T45 ENH4-1T45 ENH5-1T45 ENH6-1T45 ENH6-1T45
EWN25 EWN32
1.102-1.417 1.417-1.811 1.772-2.283 2.205-2.874 2.677-3.937 3.937-6.024
.274 .370 .398 .453 .492 .492
1.398 1.654 1.929 2.244 2.795 3.425
1.213 1.370 1.646 1.961 2.512 3.142
TP07
EWE/D/N41 EWE/D/N53 EWE/D/N68 EWE/N100
TC11
SERIES 310—INSERT HOLDERS 25º
25º
Head Type
Catalog Number
øD
E
Insert
ENH3-1T25 ENH4-1T25 ENH5-1T25 ENH6-1T25 ENH6-1T25
EWN32
1.260-1.654 1.614-2.126 2.087-2.756 2.677-3.937 3.937-6.024
.291 .319 .394 .492 .492
ACCESSORIES
EWE/D/N41 EWE/D/N53 EWE/D/N68 EWE/N100
TC11
INSERTS PG. 506
BACK BORING INSTRUCTIONS For back boring, it is required to enter into the bore off centre, with a tool adjusted to the back bore diameter. In this respect, the back bore diameter «D» as well as the diameters of the entry bore «C» and the tool body «A», are related to each other. In order to check the feasibility of the back boring operation and to select the best possible tool combination, these values can be calculated as follows:
C øD 1
Example: Calculation of the minimum entry bore diameter «C». Given: Back Bore Diameter øD=93mm Tool Combination EWN53, with Insert Holder No. 3, øD1=50 mm C= = =71.5mm øD + øD1 2 93 + 50 2 Counter clockwise spindle rotation is required for back boring operations. The cutting edge is at a shorter length than the boring head. Consider total length of tool. Check the space at the back side of the work piece ! CAUTION
Min Entry Bore Diameter «C»
øD + øD 1 2
C=
Max Back Bore Diameter «øD» øD=2C-øD 1 Max Tool Body Diameter «øD 1 » øD 1 =2C-øD
øD
462
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