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BEYOND S14N-STWPR11 Internal Turning Tool Holder for TPMR 1103 Inserts
$16.31 USD
⚠️ PLEASE NOTE: TOOL HOLDER ONLY (INSERTS EXCLUDED) The indexable carbide insert displayed in the boring bar images is for demonstration purposes only and is NOT included in your purchase....
BEYOND S20R-STWPR11 Internal Turning Tool Holder for TPMR 1103 Inserts
$24.19 USD
⚠️ PLEASE NOTE: CARBIDE INSERTS NOT INCLUDED The indexable carbide insert shown within the boring bar pocket is for visual demonstration purposes only. It is NOT included in the purchase...
BEYOND S16Q-STWPR11 High-Rigidity 16mm Shank 180mm Length Screw Clamped Right Hand CNC Lathe Internal Hole Boring Bar for TPMT 1103 Inserts
$16.84 USD
⚠️ INDUSTRIAL SUPPLY NOTICE: The indexable carbide cutting insert is NOT included with this boring bar package. Product images displaying a mounted insert are provided strictly to illustrate geometric pocket...
BEYOND S12M-STWPR11 Internal Turning Tool Holder for TPMR 1103 Inserts
$16.14 USD
⚠️ PLEASE NOTE: TOOL HOLDER ONLY (INSERTS EXCLUDED) The indexable carbide insert displayed in the boring bar images is for demonstration purposes only and is NOT included in your purchase....
BEYOND S10K-STWPR11 Internal Turning Tool Holder for TPMR 1103 Inserts
$14.85 USD
⚠️ PLEASE NOTE: TOOL HOLDER ONLY (INSERTS EXCLUDED) The indexable carbide insert displayed in the boring bar images is for demonstration purposes only and is NOT included in your purchase....
BEYOND S10K-STWPR09 Internal Turning Tool Holder for TPMR 0902 Inserts
$14.85 USD
⚠️ PLEASE NOTE: TOOL HOLDER ONLY (INSERTS EXCLUDED) The indexable carbide insert displayed in the boring bar images is for demonstration purposes only and is NOT included in your purchase....
BEYOND S08K-STWPR09 High-Rigidity 8mm Shank 125mm Length Screw Clamped Right Hand CNC Lathe Micro Internal Hole Boring Bar for TPMT 0902 Inserts
$13.50 USD
⚠️ INDUSTRIAL SUPPLY NOTICE: The indexable carbide cutting insert is NOT included with this boring bar package. Product images displaying a mounted insert are provided strictly to illustrate geometric pocket...
BEYOND STWPR/L Boring Bar – Screw-On Type | Internal Turning Toolholders
The BEYOND STWPR/L boring bar series is engineered for high-precision internal turning, featuring a rigid steel shank and a secure screw-on clamping mechanism. Designed to fit TPGT carbide inserts, this series offers excellent chip control and stability in small-diameter boring operations. Fully compliant with ISO toolholder standards, STWPR/L is ideal for finishing and semi-finishing applications.
Main Features
- S-Type screw-on clamping (ISO code: S)
- Compatible with TPGT + edge length carbide inserts
- Triangle insert shape (T)
- 60° cutting edge angle (W) for reduced cutting forces
- Relief angle according to ISO letter (P, N, D, C, etc.)
- Right-hand (R) and Left-hand (L) models
- Steel shank provides rigidity for stable internal machining
ISO Code Breakdown (STWPR/L Series)
- S – Steel Shank (Type of Bar)
- Bar Diameter – Two digits after S (e.g., 10 = Ø10mm)
- Bar Length Letter – K, M, N, Q, R (ISO length mapping)
- S – Screw-On Clamping
- T – Triangle Insert Shape
- W – 60° Cutting Edge Angle
- P / N / D / C / E / B – Insert Relief Angle
- R / L – Hand of Tool
- 09 / 11 – Cutting Edge Length of Insert
Compatible Insert Type
This boring bar series uses the insert model: TPGT + last two digits (Example: TPGT0902, TPGT1102)
Available Models & Technical Specifications
| Model | Shank Ø (mm) | Shank Length (ISO Code) | Hand | Insert Type | Insert Edge Length | Clamping Method |
|---|---|---|---|---|---|---|
| S08K-STWPR09 | 8 | K | R | TPGT | 09 | Screw-On (S) |
| S10K-STWPR09 | 10 | K | R | TPGT | 09 | Screw-On (S) |
| S16Q-STWPR11 | 16 | Q | R | TPGT | 11 | Screw-On (S) |
| S10K-STWPR11 | 10 | K | R | TPGT | 11 | Screw-On (S) |
| S12M-STWPR11 | 12 | M | R | TPGT | 11 | Screw-On (S) |
| S14N-STWPR11 | 14 | N | R | TPGT | 11 | Screw-On (S) |
| S20R-STWPR11 | 20 | R | R | TPGT | 11 | Screw-On (S) |
Typical Applications
- Internal turning and profiling
- Small-diameter boring
- Finishing & semi-finishing operations
- Machining steel, stainless steel, cast iron, and alloy materials
- High-precision CNC turning for thin-wall bores
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