Shop S14N-STWPR11 Internal Boring Bar Tool Holder | 60° Cutting Angle | Ideal for CNC Lathes
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S12M-STWPR11 CNC Internal Boring Bar Tool Holder – 60° Cutting Edge, 11° Blade Relief, TPMT Blade Compatible
S10K-STWPR11 CNC Internal Boring Bar Tool Holder | 60° Cutting Edge | Alloy Steel | Compatible with TPMT Blades
S10K-STWPR09 CNC Internal Boring Bar Tool Holder | Precision 60° Cutting Edge with Alloy Steel Build
Buy S08K-STWPR09 CNC Internal Boring Bar Tool Holder | Precision 60° Cutting Edge with Alloy Steel Build
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S20R-STUPL11 CNC Internal Boring Bar Tool Holder - Alloy Steel, 95° Cutting Edge, Precision Machining
S18Q-STUPR11 CNC Internal Boring Bar Tool Holder – Precision and Durability
S16Q-STUPR11 CNC Internal Boring Bar Tool Holder | 95° Cutting Edge | Alloy Steel | 16mm Handle
S16Q-STUPL11 CNC Internal Boring Bar Tool Holder | 95° Cutting Edge | Alloy Steel | 16mm Handle
S14N-STUPR11 CNC Internal Boring Bar Tool Holder – Precision Alloy Steel Tool for Advanced Machining
S12M-STUPR11 CNC Internal Boring Bar Tool Holder – Superior Precision with 95° Cutting Edge & Alloy Steel Durability
S12M-STUPR09 Mechanical Lathe CNC Internal Boring Bar Tool Holder | 95° Precision Angle | Durable Alloy Steel
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S12M-STUPL09 Mechanical Lathe CNC Internal Boring Bar Tool Holder | 95° Precision Angle | Durable Alloy Steel
S10K-STUPR11 CNC Internal Boring Bar Tool Holder | 95° Cutting Edge | Alloy Steel | 11mm Blade
S10K-STUPL11 CNC Internal Boring Bar Tool Holder | 95° Cutting Edge | Alloy Steel | 11mm Blade
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S08K-STUPR08 CNC Internal Boring Bar Tool Holder - Precision Alloy Steel Construction
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S08K-STUPL08 CNC Internal Boring Bar Tool Holder - Precision Alloy Steel Construction
High-Performance S20R-STUPR11 CNC Internal Boring Bar Tool Holder - Alloy Steel, 95° Cutting Edge, Precision Machining
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S20R-STFPR11 CNC Internal Boring Bar Tool Holder - Precision Alloy Steel Tool for CNC Lathes
S20R-STFPL11 CNC Internal Boring Bar Tool Holder - Precision Alloy Steel Tool for CNC Lathes
S16Q-STFPR11 CNC Internal Boring Bar Tool Holder | 91° Cutting Edge Angle | Alloy Steel Construction
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S14N-STFPR11 CNC Internal Boring Bar Tool Holder – Alloy Steel, 91° Cutting Edge, 14mm Handle Diameter
S14N-STFPL11 CNC Internal Boring Bar Tool Holder – Alloy Steel, 91° Cutting Edge, 14mm Handle Diameter
S12M-STFPR11 CNC Internal Boring Bar Tool Holder – High Precision, Alloy Steel, Versatile Performance
S12M-STFPL11 CNC Internal Boring Bar Tool Holder – High Precision, Alloy Steel, Versatile Performance
S10K-STFPR11 Mechanical Lathe CNC Internal Boring Bar Tool Holder | Precision 91° Cutting Edge | Alloy Steel
S10K-STFPR09 CNC Internal Boring Bar Tool Holder – 91° Cutting Edge, Alloy Steel, 10mm Handle
S10K-STFPL11 Mechanical Lathe CNC Internal Boring Bar Tool Holder | Precision 91° Cutting Edge | Alloy Steel
S10K-STFPL09 CNC Internal Boring Bar Tool Holder – 91° Cutting Edge, Alloy Steel, 10mm Handle
S08K-STFPR09 CNC Internal Boring Bar Tool Holder | 91° Angle, Alloy Steel, 8mm Handle
S08K-STFPR08 CNC Boring Bar Tool Holder – High-Precision Internal Turning Tool with Alloy Steel Construction
S08K-STFPL09 CNC Internal Boring Bar Tool Holder | 91° Angle, Alloy Steel, 8mm Handle
S08K-STFPL08 CNC Boring Bar Tool Holder – High-Precision Internal Turning Tool with Alloy Steel Construction
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
| Model | Shank Dia (D) | Overall Length (L) | Insert | Min Bore | Center Height (H) |
|---|---|---|---|---|---|
| S12M-STFPR09 | 12 mm | 150 mm | TPMT0902 | 14 mm | 12 mm |
| S16Q-STFPR11 | 16 mm | 180 mm | TPMT1102 | 18 mm | 16 mm |
| S20R-STFPR11 | 20 mm | 200 mm | TPMT1102 | 22 mm | 20 mm |
STUPR / STUPL – Universal Internal Turning Type
| Model | D | L | Insert | Min Bore | H |
|---|---|---|---|---|---|
| S12M-STUPR09 | 12 mm | 160 mm | TPMT0902 | 14 mm | 12 mm |
| S16Q-STUPR11 | 16 mm | 190 mm | TPMT1102 | 18 mm | 16 mm |
| S20R-STUPR11 | 20 mm | 210 mm | TPMT1102 | 22 mm | 20 mm |
STWPR / STWPL – Reinforced Boring Bar Type
| Model | D | L | Insert | Min Bore | H |
|---|---|---|---|---|---|
| S16Q-STWPR11 | 16 mm | 200 mm | TPMT1102 | 18 mm | 16 mm |
| S20R-STWPR11 | 20 mm | 220 mm | TPMT1102 | 22 mm | 20 mm |
| S25S-STWPR16 | 25 mm | 250 mm | TPMT16T3 | 28 mm | 25 mm |
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.