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40 Years IndexableCenter Series | Indexable Milling Cutters Manufacturer | Y.T. / YT / YIH TROUN

Based in Taiwan, YIH TROUN ENTERPRISE CO., LTD., since 1977, is a IndexableCenter Series | indexable cutting tool manufacturer that has over 4500 standard indexable cutters and 30 patented designs. Focusing on developing highly efficient Indexable Tools to reduce cost and reach maximum productivity.

Y.T. / YT / YIH TROUN is the only company in Taiwan to manufacture indexable shank holder together with unique core technology for carbide insert sintering and grinding. Precision slotting, slitting and cutting tools, including indexable saw blades, side and milling cutters and transformer t-slot cutters.

Y.T. has been focusing on developing indexable cutting tools to meet the challenges of machining industry to increase efficiency and reduce cost. Y.T. indexable tools have been developed to enhance the performance of the machine to help the manufacturer's production competitiveness. With easy to clean, heat resistance and high quality indexable high speed cutter and indexable taps, in addition to 40 years of experience, Y.T. / YT / YIH TROUN ensures each customer's demands are met.

IndexableCenter Series

Center Series
Center Series

Using the high-precision center drill and spot drill to achieve better drill and tap tool life is definitely the best choice to save costs and machining time:

Time-saving: When machining with a drill or tap, the tool can easily break if it is not accurately positioned, and it would take lots of time to remove the broken drill and tap. By using a precise center /spot drill can solve this problem immediately.

Cost-saving: The accurate center positioning center drill and spot drill improve the tool life of the drill and tap significantly by giving a precise center spot, it reduces the amount of tool used.

The YIH TROUN full series of indexable spot drills and center drills use fully ground carbide insert, which need to be replaced only when worn out but without the needs to replace the shanks. There are also a variety of long and short shanks that are interchangeable. The inserts are made of different grades in different angles and sizes:
Spot Drill: 90° / 90 + 142° / 142°
Center Drill: 60° / 60 + 120° / 90°

  • Spot Drill - Indexable Spot Drill
    Spot Drill

    Also known as positioning drills, a dedicated spot drill to milling machines. The two cutting edges are designed on balanced positions to decrease the high feed rotating runout and secure ultimate positioning precision. YIH TROUN Spot Drill features sandwich plug-and-clamp construction as well as special design with tapered key. It stays eccentricity ± 0.008mm, approaches almost zero eccentric in stationary status. YIH TROUN Spot Drill was designed with exclusive geometry angle on the engage point which gives awesome stability that conduces to excellent verticality precision on pilot pre-hole concentricity rate and improves life time of the drill and tap.


  • Center Drill - Indexable Center Drill
    Center Drill

    The indexable insert of YIH TROUN Center Drill is made from special carbide materials, it provides a sturdy and robust drill bit and offers the machining efficiency and tool life four times better than HSS center drills. With YIH TROUN Indexable Carbide Center Drill, users will get an overall 3 ~ 5 times cost saving from its supreme life time and the great time-reduction in frequently tool changing, re-centering and length calibrating. YIH TROUN indexable center drill features sandwich plug-and-clamp construction as well as tapered key special design. It stays eccentricity ± 0.008mm, approaches zero eccentric in stationary status. It is a dedicated indexable center drill for center facing machining by lathe, milling machine and drilling machine.


  • Indexable Engraving Tool - Indexable Engraving Tool
    Indexable Engraving Tool

    Y.T. indexable engraving tool offers you an accurate engraving solution on CNC machine. Patented double clamping 390 system and unique positive insert geometry design in 60° ensure you a precise and slim engraving line. Fully grinded insert fit on HSS "TU1" shank and Swiss screw, together with GA centralizer leads to a great concentricity and realize the possibility to change insert directly from the machine, without the needs to calibrate the tool length repeatedly. The Min. dia. on the insert starts from dia. 0.15 mm. With smallest eccentricity only 0.008mm, we make the great performance in tool life and speed possible. One single insert can be applied on different materials: Steel / Stainless steel / Non-ferrous metal and Plastic. Moreover, in the application such as product code, digital engraving, marking, trademark engraving and all CNC programing letters and images engraving. Y.T. indexable engraving tool widely used in the industries: Medical / defense / mold / automobile / gears / bearings, and boutique industries