# SynTool by Denitool®: Indexable Carbide Mini Boring Bars for Existing Holders

Source: https://www.denitool.com/en/syntool.html
Curated Markdown for AI agents. Prices and availability: live via the Store API, see https://www.denitool.com/llms.txt

SynTool is Denitool's range of small solid-carbide boring bars with an indexable insert, for internal turning (boring) of small bores. Denitool is DENI AG, Veltheim, Switzerland, and its subsidiary Denitool Inc., Raleigh NC, which runs the inch program. The bars have a plain cylindrical carbide shank of 4, 5 or 6 mm (tolerance h6) and are made to be clamped in holders you already have, the way monobloc (solid) boring tips are clamped. They also fit Sandvik® CoroTurn® XS and SIMTEK® simturn® AX holders. Minimum bore diameter DMIN is 4.8 mm to 7.8 mm (.189" to .307"), maximum boring depth 16 mm to 37.7 mm (.630" to 1.484").

![Overview of SynTool bars for Sandvik CoroTurn XS and SIMTEK simturn AX holders, holes from ⌀ 4.8 mm (.189")](https://www.denitool.com/assets/images/c/SynTool%20by%20Denitool-60cb62dc.png)

What the page says about the range ("utilize existing holders"):
- Exploit the synergy: an indexable solution adapted for third-party holders. Cost savings per edge are around 70% compared with traditional monobloc tips.
- Denitool® carbide shank tips with inserts: for applications that are not possible with conventional monobloc turning tips, this indexable solution with Denitool® inserts is a standard catalog program (live availability: Store API).
- Precision cuts: the ground and hardened SynTool bars and precise inserts give precise cuts and repeatability.

Sandvik® and CoroTurn® are registered trademarks of Sandvik Intellectual Property AB. SIMTEK® and simturn® are registered trademarks of Simtek AG.

## Program overview

The standard range has 23 bars in six tool styles. All bars are right-hand, carbide shank without coolant channel (designation letter C).

| Style | KAPR | Bar shape | Insert size | Insert shape | Insert screw | Torx driver | Screw torque | DMIN from | Bars |
|---|---|---|---|---|---|---|---|---|---|
| SWUCR | 93° | cylindrical | WC 0201.. | 80° trigon, 7° clearance | T20.037 | T6F | 0.60 Nm (5.3 lbf·in) | 5.8 mm (.228") | 6 |
| SCLDR | 95° | cylindrical | CD 0401.. | 80° rhombus, 15° clearance | T18.Z30A | T5F | 0.45 Nm (4.0 lbf·in) | 4.8 mm (.189") | 9 |
| SDUCR | 93° | stepped (eccentric neck) | DC 04T0.. | 55° rhombus, 7° clearance | T16.035 | T5F | 0.30 Nm (2.7 lbf·in) | 5.6 mm (.220") | 2 |
| SDQCR | 107.5° | stepped (eccentric neck) | DC 04T0.. | 55° rhombus, 7° clearance | T16.035 | T5F | 0.30 Nm (2.7 lbf·in) | 5.2 mm (.205") | 2 |
| SGLCR | 95° | stepped (eccentric neck) | GC 04T0.. | 45° rhombus, 7° clearance | T16.035 | T5F | 0.30 Nm (2.7 lbf·in) | 7.0 mm (.276") | 2 |
| SGXCR | 113° | stepped (eccentric neck) | GC 04T0.. | 45° rhombus, 7° clearance | T16.035 | T5F | 0.30 Nm (2.7 lbf·in) | 7.0 mm (.276") | 2 |

Insert pages on the website: WC 0201 https://www.denitool.com/en/indexable-inserts/i/wc-0201-wc-1-21.html · CD 0401 https://www.denitool.com/en/indexable-inserts/i/cd-0401-cd-1-2-6.html · DC 04T0 https://www.denitool.com/en/indexable-inserts/i/dc-04t0-dc-10-8.html · GC 04T0 https://www.denitool.com/en/indexable-inserts/i/gc-04t0-gc-10-8.html

Insert dimensions (catalog master data): WC 0201.. inscribed circle 3.97 mm (.156"), thickness 1.59 mm (.063"). CD 0401.. inscribed circle 3.97 mm (.156"), thickness 1.0 mm (.039"). DC 04T0.. and GC 04T0.. inscribed circle 3.1 mm (.122"), thickness 1.2 mm (.047").

Screw torques are from the Denitool tightening torque page: https://www.denitool.com/md/en/tightening-torque.md. T5F and T6F are flag-type Torx drivers (Torx T5, T6).

Note on the SWUCR screw: the human page lists screw T18.Z30A and driver T5F for the 93° SWUCR bars. The catalog master data give T20.037 and T6F for these bars, the same screw as on the MiniTools 80° SWUC bars that take the same WC 0201 insert. This file follows the master data.

Cutting data: the human page offers cutting data tables for WC02, CD04 and DC04 / GC04 / VC05 inserts (international and U.S. versions). The values are not reproduced here. Ask Denitool, see https://www.denitool.com/md/en/support.md

## Designation and abbreviations

Example: **C0520 SWUCR-02**

| Part | Meaning |
|---|---|
| C | Carbide shank without coolant channel |
| 05 | Shank diameter DCON in mm (04, 05 or 06) |
| 20 | Maximum boring depth CLMBD in whole mm (C0521 = 21.2 mm, C0625 = 25.7 mm) |
| S | Screw clamping of the insert |
| W / C / D / G | Insert shape: W = 80° trigon, C = 80° rhombus, D = 55° rhombus, G = 45° rhombus |
| U / L / Q / X | Tool style: U = KAPR 93°, L = KAPR 95°, Q = KAPR 107.5°, X = special style, here KAPR 113° |
| C / D | Insert clearance angle: C = 7°, D = 15° |
| R | Right-hand tool |
| -02 / -04 | Insert size: 02 = WC 0201.., 04 = CD 0401.., DC 04T0.. or GC 04T0.. |

Full keys: https://www.denitool.com/md/en/boring-bar-designation.md and https://www.denitool.com/md/en/insert-designation.md

| Abbreviation | Meaning |
|---|---|
| KAPR | Tool cutting edge angle, measured from the feed direction |
| DMIN | Minimum bore diameter the bar can enter |
| CLMBD | Maximum boring depth at DMIN |
| DCON | Shank (connection) diameter, tolerance h6 |
| LF | Functional length. On SynTool bars it equals the overall length. |
| WF | Functional width: distance from the shank axis to the cutting corner |

## 93° SWUCR, cylindrical boring bars

Insert WC 0201.., screw T20.037, Torx driver T6F. Carbide shank, no coolant channel. Dimensions in mm.

![Tool drawing SWUCR (right-hand tool)](https://www.denitool.com/files/GTC/product_family_drawings/STISWU.png)

| Order no. | Hand | DMIN | DMIN (inch) | CLMBD | DCON | LF | WF |
|---|---|---|---|---|---|---|---|
| C0520 SWUCR-02 | right | 5.8 | .228" | 20 | 5 | 43.6 | 2.9 |
| C0525 SWUCR-02 | right | 5.8 | .228" | 25 | 5 | 48.6 | 2.9 |
| C0530 SWUCR-02 | right | 5.8 | .228" | 30 | 5 | 53.6 | 2.9 |
| C0624 SWUCR-02 | right | 7.8 | .307" | 24 | 6 | 48.4 | 3.9 |
| C0630 SWUCR-02 | right | 7.8 | .307" | 30 | 6 | 54.4 | 3.9 |
| C0636 SWUCR-02 | right | 7.8 | .307" | 36 | 6 | 60.4 | 3.9 |

## 95° SCLDR, cylindrical boring bars

Insert CD 0401.., screw T18.Z30A, Torx driver T5F. Carbide shank, no coolant channel. Dimensions in mm.

![Tool drawing SCLDR (right-hand tool)](https://www.denitool.com/files/GTC/product_family_drawings/STISCL.png)

| Order no. | Hand | DMIN | DMIN (inch) | CLMBD | DCON | LF | WF |
|---|---|---|---|---|---|---|---|
| C0416 SCLDR-04 | right | 4.8 | .189" | 16 | 4 | 33.7 | 2.5 |
| C0420 SCLDR-04 | right | 4.8 | .189" | 20 | 4 | 37.7 | 2.5 |
| C0424 SCLDR-04 | right | 4.8 | .189" | 24 | 4 | 41.7 | 2.5 |
| C0521 SCLDR-04 | right | 5.8 | .228" | 21.2 | 5 | 44.8 | 2.9 |
| C0526 SCLDR-04 | right | 5.8 | .228" | 26.2 | 5 | 49.8 | 2.9 |
| C0531 SCLDR-04 | right | 5.8 | .228" | 31.2 | 5 | 54.8 | 2.9 |
| C0625 SCLDR-04 | right | 6.8 | .268" | 25.7 | 6 | 50.1 | 3.4 |
| C0631 SCLDR-04 | right | 6.8 | .268" | 31.7 | 6 | 56.1 | 3.4 |
| C0637 SCLDR-04 | right | 6.8 | .268" | 37.7 | 6 | 62.1 | 3.4 |

## 93° SDUCR, stepped boring bars

Insert DC 04T0.., screw T16.035, Torx driver T5F. Carbide shank, no coolant channel. Dimensions in mm.

![Tool drawing SDUCR (right-hand tool)](https://www.denitool.com/files/GTC/product_family_drawings/STISDU.png)

| Order no. | Hand | DMIN | DMIN (inch) | CLMBD | DCON | LF | WF |
|---|---|---|---|---|---|---|---|
| C0520 SDUCR-04 | right | 5.6 | .220" | 20 | 5 | 43.6 | 3.0 |
| C0525 SDUCR-04 | right | 5.6 | .220" | 25 | 5 | 48.6 | 3.0 |

## 107.5° SDQCR, stepped boring bars

Insert DC 04T0.., screw T16.035, Torx driver T5F. Carbide shank, no coolant channel. Dimensions in mm.

![Tool drawing SDQCR (right-hand tool)](https://www.denitool.com/files/GTC/product_family_drawings/STISDQ.png)

| Order no. | Hand | DMIN | DMIN (inch) | CLMBD | DCON | LF | WF |
|---|---|---|---|---|---|---|---|
| C0520 SDQCR-04 | right | 5.2 | .205" | 20 | 5 | 43.6 | 2.6 |
| C0525 SDQCR-04 | right | 5.2 | .205" | 25 | 5 | 48.6 | 2.6 |

## 95° SGLCR, stepped boring bars

Insert GC 04T0.., screw T16.035, Torx driver T5F. Carbide shank, no coolant channel. Dimensions in mm.

![Tool drawing SGLCR (right-hand tool)](https://www.denitool.com/files/GTC/product_family_drawings/STISGL.png)

| Order no. | Hand | DMIN | DMIN (inch) | CLMBD | DCON | LF | WF |
|---|---|---|---|---|---|---|---|
| C0624 SGLCR-04 | right | 7.0 | .276" | 24 | 6 | 48.4 | 3.9 |
| C0630 SGLCR-04 | right | 7.0 | .276" | 30 | 6 | 54.4 | 3.9 |

## 113° SGXCR, stepped boring bars

Insert GC 04T0.., screw T16.035, Torx driver T5F. Carbide shank, no coolant channel. Dimensions in mm.

![Tool drawing SGXCR (right-hand tool)](https://www.denitool.com/files/GTC/product_family_drawings/STISGX.png)

| Order no. | Hand | DMIN | DMIN (inch) | CLMBD | DCON | LF | WF |
|---|---|---|---|---|---|---|---|
| C0624 SGXCR-04 | right | 7.0 | .276" | 24 | 6 | 48.4 | 3.9 |
| C0630 SGXCR-04 | right | 7.0 | .276" | 30 | 6 | 54.4 | 3.9 |

## ST toolholders for SynTool bars

The catalog also lists steel toolholders in the SynTool line (catalog description: "Realignment Toolholder"). They take a SynTool bar of 4, 5 or 6 mm shank and have a cylindrical shank of 10, 12, 16 or 20 mm with internal coolant. Designation ST<bar shank mm> <holder shank mm><length mm>, for example ST04 1065 = for 4 mm bars, 10 mm shank, 65 mm long. Screw listed for the holder: T60.075.

| Holder | For bar shank | Holder shank | Length |
|---|---|---|---|
| ST04 1065, ST05 1065 | 4 / 5 mm | 10 mm | 65 mm |
| ST04 1270, ST05 1270, ST06 1270 | 4 / 5 / 6 mm | 12 mm | 70 mm |
| ST04 1675, ST05 1675, ST06 1675 | 4 / 5 / 6 mm | 16 mm | 75 mm |
| ST04 2084, ST05 2084, ST06 2084 | 4 / 5 / 6 mm | 20 mm | 84 mm |

## How to find and order

All 23 SynTool bars are in the Swiss online shop category "SynTool" (category id 61). Store API, returns the full list:

```
curl -s "https://ch.denitool.com/wp-json/wc/store/v1/products?category=61&per_page=50"
```

Search by designation (works on the Swiss shop and on the U.S. shop):

```
curl -s "https://ch.denitool.com/wp-json/wc/store/v1/products?search=C0624"
curl -s "https://store.denitool.com/wp-json/wc/store/v1/products?search=C0624"
```

The first returns C0624 SWUCR-02, C0624 SGLCR-04 and C0624 SGXCR-04. A search for a style code such as `search=SCLDR` also returns MicroTurn D bars with the same style. The ST holders are found with `search=ST0`. Prices and availability come live from the Store API.

## Related pages

- Similar ranges: MicroTurn D (same CD 0401 insert, steel bars with or without coolant and carbide bars with coolant, right and left hand) https://www.denitool.com/md/en/microturn-d.md · MiniTools 80° (same WC 0201 insert) https://www.denitool.com/md/en/minitools-80.md · MicroCopy D https://www.denitool.com/md/en/microcopy-d.md · MicroCopy G https://www.denitool.com/md/en/microcopy-g.md · MicroTurn A/S (monobloc micro tools) https://www.denitool.com/md/en/microturn-a-s.md
- Turning overview: https://www.denitool.com/md/en/turning.md · https://www.denitool.com/md/en/hardturn-80.md · https://www.denitool.com/md/en/smallbars-75.md · https://www.denitool.com/md/en/microcopy-35.md · https://www.denitool.com/md/en/minicopy-35.md · https://www.denitool.com/md/en/copy-35.md · https://www.denitool.com/md/en/swissline.md · https://www.denitool.com/md/en/turning-60.md · https://www.denitool.com/md/en/isotools.md
- Keys and data: https://www.denitool.com/md/en/boring-bar-designation.md · https://www.denitool.com/md/en/insert-designation.md · https://www.denitool.com/md/en/insert-grades.md · https://www.denitool.com/md/en/cut-off-inserts-code.md · https://www.denitool.com/md/en/tightening-torque.md
- Milling and holemaking: https://www.denitool.com/md/en/indexable-milling.md · https://www.denitool.com/md/en/microcut-f.md · https://www.denitool.com/md/en/micromill.md · https://www.denitool.com/md/en/countersink-cutter.md · https://www.denitool.com/md/en/corner-and-face-milling-cutter.md · https://www.denitool.com/md/en/millingcutters.md · https://www.denitool.com/md/en/slot-milling-cutter.md · https://www.denitool.com/md/en/holemaking.md · https://www.denitool.com/md/en/vario-system.md · https://www.denitool.com/md/en/carbide-bars-for-precision-boring-heads.md
- Tooling systems: https://www.denitool.com/md/en/tooling-systems.md · https://www.denitool.com/md/en/modulo-d-system.md · https://www.denitool.com/md/en/system-tools-for-live-tooling.md · https://www.denitool.com/md/en/live-tools-for-heimatec-u-tec.md · https://www.denitool.com/md/en/mt-tools-for-chiron-precision.md · https://www.denitool.com/md/en/mt-tools-for-willemin-macodel.md · https://www.denitool.com/md/en/mt-tools-for-hsk-t.md · https://www.denitool.com/md/en/mt-tools-for-psc40.md · https://www.denitool.com/md/en/multicut-system.md
- Company and help: https://www.denitool.com/md/en/products.md · https://www.denitool.com/md/en/services.md · https://www.denitool.com/md/en/support.md · https://www.denitool.com/md/en/downloads.md · https://www.denitool.com/md/en/denitool-company.md