Page 45 - JBO-Katalog-2022

M
General advantages of thread milling MF
MJ
EG M
- Threads to different tolerance classes can be produced with same cutter
- Tool breakage does not necessarily entail scrapping of the workpiece
G
- Less power needed for cutting internal threads Rc, R
- Short machining times due to high cutting speeds Pg
- Excellent thread surface finish
- Short chips, hence no chip problems UNC
- Right and left hand threads can be produced in blind or through holes version by the same cutter UNF
UN
- Low cutting forces enable threads to be cut in thin wall workpieces UNJF
- Cutting speeds and feeds can be matched individually to workpiece material
- No torque change of the main spindle necessary
NPT
- No special tapping chucks required, standard chucks suffice NPTF
- Threads can be cut to exact depth
- For blind holes, thread production is possible up to near the end of the hole
- Start of thread accurately determined by NC programme

Special advantages of type GFS thread milling cutter with chamfering capability
- High productivity due to chamfering and thread milling with just one tool without tool changing
- Reduction of both cutting time and non-cutting time in machining cycle
- Saving of tool magazine places
- Elimination of tool changing time
- Reduction of setting time

M
MF
M keg.
Special advantages of type GFM wide range thread milling cutter M taper
- A wide range of diameters with an equal pitch can be machined G
- Low tooling costs for large threads BSW
BSF
DIN 477
- Due to the neck recess between the cutter teeth and the shank, a much deeper thread can R, BA, Pg
be produced by a second milling cycle than with cutters without neck recess
UNC
UNF
UNEF
Special advantages of type GFE / GFT thread milling cutters UN, UNS
- Small diameter threads starting at M 1 can be produced NPSM
- Deep threads (3xD) can be produced NPT
NPTF
Tr, Rd

Special advantages of type BGF / BGF 3 drill thread milling cutters

- High productivity due to drilling, chamfering and thread milling with just one tool without tool changing
- Reduction of cutting and non-cutting times in machining cycle
- Saving of two tool magazine places
- Fully cut thread only 1.3 x pitch shorter than depth of drilled hole
- Both blind and through holes can be drilled and threaded

M
MF
Special advantages of circular drill thread milling cutters type BGFS
G
- Allows the usage of circular drill thread milling cutter in soft and hardened steel materials BSW
BSF
and non-ferrous metals R, Pg
- High productivity due to drilling and thread milling with just one tool without tool changing MF-EL
- Reduction of non-cutting times in machining cycle UNC, UNF
UNEF
UN, UNS
UNJC
UNJF
45 NPT
NPTF
Tr
EG