Mill/Turn Tooling
Modular Tooling Systems For Turning Applications On Mill/Turn Centers (MTC's)

Revolutionary! The very first modular tooling system for turning applications. A modular turning tool system for Mill/Turn Centers (MTC's) offers better efficiency, material selection, heat treatment and optimal tool lengths. The serious damage on tool holders caused by broken inserts can now be easily and economically replaced.

Mill/Turn Tooling

Dual Contact Modular Turning Tools for MTC's

  • Cartridges made to very close tolerances required for turning accuracy & repeatability

  • Many gauge lengths available in each style holder, and integral models are also available (Type S only)

  • Type S (45°) cartridges feature right hand, left hand and neutral approach versions
  • Type F (90°) cartridges feature right and left hand approach versions

  • Coolant through
  • Accepts ISO Standard inserts
  • Available in BIG-PLUS®, BIG CAPTO, and HSK-T63

A Variety of Modular Turning Tools

BIG-PLUS® 45° Tilt Style – Type S Basic Holder


Lead Angle: 3° - 27.5°
Gauge Length: 2.625" - 4.500"

17 kinds of Cartridge Type S for a variety of applications

Tilting the "B" axis 45 helps to minimize the cutting forces transmitted to the machine spindle. This force reduction increases the life of the machine spindle.

Type S Cartridge Clamping System

Using highly sophisticated and modern machine tools, Type S Cartridges are made to very close tolerances required for turning accuracy and repeatability. The cartridge is located in the basic holder by means of a precision ground pilot and secured by 2 opposing radial screws with a 15° taper. With a slight offset to locating sockets, high face-to-face clamping force of the two components is generated. To maintain precise locations and orientation, an additional locating pin is included for positive transfer of cutting torque.

With "B" axis at 45, accessibility problems with the chuck or tailstock are overcome to minimize tool length.

BIG-PLUS® 90° Right Angle Style – Type F Basic Holder


Lead Angle: 3° - 32°
Gauge Length: 4.125 "- 5.125"

36 kinds of Cartridge Type F for a variety of applications.
Right and left hand cartridges are available

All holders can be assembled with either right or left hand version of cartridge.

Simple and Positive Type F Cartridge Clamping System

Type F uses 2 clamping bolts that presses the cartridge onto the basic holder. The torque is transmitted by an interlocking drive slot.

Center proximity type cartridge is also available, minimizing tailstock interference.

180° Square Tool Holder

Clamping Size: 1.000" & 1.250"
Gauge Length
: 5.000"

Available in right and left hand.

45° Square Tool Holder

Clamping Size: 1.000" & 1.250"
Gauge Length: 4.750" - 5.500"

Available in right and left hand.

Boring Bar Holder

Clamping Range Dia.: .625" - 2.000"
Gauge Length: 3.500" - 5.500"


Precision Drive Keys

BIG-PLUS® turning tool holders are designed for Mill/Turn machines. To maintain turning repeatability after tool change, the drive keys are precision milled after heat treat to prevent misalignment of cutting edge and centerline of workpiece.

ASME Standard tolerance = .020"

BIG Kaiser tolerance = .0016" - .0020"