BEYOND TPMT Boring Bars – Internal Turning Toolholder Series

The BEYOND TP INSERT boring bar series is designed for precision internal turning operations using TPMT positive triangular carbide inserts. This series includes STFPR/L, STUPR/L, and STWPR/L toolholders, offering excellent rigidity, stable insert clamping, and reliable cutting performance. Manufactured according to ISO standards, these boring bars are ideal for CNC lathes and turning centers.

Included Toolholder Types

• STFPR / STFPL – Compact screw-clamp boring bars for finishing operations.
• STUPR / STUPL – Universal internal turning bars for profiling and facing.
• STWPR / STWPL – Reinforced boring bars for higher rigidity and stable cutting.

Key Features & Advantages

• Compatible with standard TPMT positive inserts.
• Triangular insert design offers three cutting edges.
• Positive rake geometry reduces cutting forces.
• High-strength alloy steel shank minimizes vibration.
• Excellent surface finish in internal turning.
• Right-hand and left-hand versions available.

Typical Applications

• Internal turning and boring
• Internal profiling and facing
• Medium to small diameter machining
• Finishing and semi-finishing operations

TPMT Insert Compatibility

• TPMT090204 / TPMT090208
• TPMT110204 / TPMT110208
• TPMT16T304 / TPMT16T308

Technical Specifications

STFPR / STFPL – Screw Clamp Type

STUPR / STUPL – Universal Internal Turning Type

STWPR / STWPL – Reinforced Boring Bar Type

SEO Keywords & Long-Tail Search Terms

• TPMT boring bar
• Internal turning toolholder for TPMT inserts
• STFPR STFPL TPMT boring bar
• STUPR STUPL CNC internal turning tool
• STWPR STWPL TPMT boring bar holder
• TPMT internal turning tool for CNC lathe
• Positive rake triangular insert boring bar

Why Choose BEYOND?

BEYOND focuses on professional CNC cutting tool solutions. All boring bars are produced under strict quality control, following ISO standards, ensuring consistent performance, long tool life, and reliable machining accuracy for global users.

Supply & Technical Support

BEYOND offers worldwide shipping, OEM/ODM services, bulk supply, and technical consulting for internal turning and boring applications.