Kyocera A12X-STUPR09-16E Internal Boring Bar Turning Toolholder
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The Kyocera A12X-STUPR09-16E is a precision internal turning boring bar engineered for internal machining operations including boring, profiling, and internal facing. Manufactured from high-strength alloy steel, this toolholder provides excellent rigidity and vibration resistance, ensuring stable cutting performance and improved surface finish when machining internal diameters on CNC and conventional lathes.
Designed with the STUPR holder configuration, this boring bar securely clamps ISO size 09 triangular inserts, maintaining accurate cutting geometry and dependable insert retention during machining. The round shank design allows stable mounting within tool sleeves or boring bar holders while providing access to medium-diameter bores. Kyocera’s boring bar designs focus on rigidity and chip evacuation to reduce chatter and improve machining stability during internal turning operations.
Key Features & Benefits
- Precision internal boring bar for turning, internal profiling, and facing
- STUPR holder style for secure insert clamping and accurate positioning
- Compatible with ISO size 09 triangular carbide inserts
- Rigid alloy steel construction improves machining stability
- Large chip pocket helps improve chip evacuation and reduce chatter
- Round shank design allows secure installation in boring bar holders
- Suitable for CNC lathes and conventional turning machines
- Designed for reliable internal machining performance
Technical Specifications
- Brand: Kyocera
- Model: A12X-STUPR09-16E
- Item Number: THC07660
- Product Type: Internal Turning Toolholder / Boring Bar
- Holder Style: STUPR
- Insert Size: 09
- Minimum Bore Diameter: 16 mm
- Shank Diameter: 12 mm
- Hand: Right Hand
- Material: Alloy Steel
Kyocera cutting tools are globally recognised for their precision engineering, reliability, and durability in demanding machining environments. Their indexable turning toolholders and boring bars are designed to deliver excellent rigidity, stable chip evacuation, and consistent machining performance across a wide range of internal turning applications.