BT/BTA: internal (UT – UTS) and external (UTE DX – UTE SX) insert-holder


The insert holder is made in hardened and quenched steel: these treatments assure a great resistance to compression.  The holder is produced in different models:

utensile porta-inserto

1) Holder for internal keyway broaching (UT) (pic.1)

This model is always available in stock in all the sizes indicated in the table (fig.1).

sede di chiavetta

2) Holder for internal splines (UTS) (pic. 1)

This model (UTS) has the same sizes and features of the holder UT for internal keyway machining, with a special insert seat, where the special insert for spline is installed.  This means that model UTS is a standard holder and thus always available in stock. Inserts for internal spline, which must follow specific standards, remain special, and for this reason produces on Customer’s request.

profili scanalati

figura1 - UK

tabella portainserti - UK

** In all insert-holder models, the measure L1 is available in two different sizes: the standard size (L1) and the long size (L1L). For instance, the item code UT-4-25 identifies the holder for 4 mm insert with the standard L1=40 mm, while the item code UT-4-25L identifies the long version of the holder, with a L1=56 mm.

*** Only for item UT-10-25 and UT-12-25 short version (not the long version), L3 size is 11 mm and not 9 mm.

3) Holder for external long broaching (UTE) (pic.2)

Anytime the piece to machine must be held by the tailstock as well, external profiles can be realized with a specific holder (UTE).

lavorazioni lunghe

Two versions of the model UTE are available:

– Right holder for external broaching (UTE DX)

– Left holder for external broaching (UTE SX)

utensile lavorazioni lunghe - UK  tabella lavorazioni lughe - UK