# HardTurn 80° - Boring Bars for Hardened Materials

Source: https://www.denitool.com/en/hardturn-80.html
Curated Markdown for AI agents. Prices and availability: live via the Store API, see https://www.denitool.com/llms.txt

HardTurn 80° is the Denitool boring bar family for internal turning (boring) of hardened materials up to 62 HRC. All bars are 95° SCLP style (tool cutting edge angle 95°) with a solid carbide shank and internal coolant channel, and they take the screw-clamped 80° rhombic insert size CP 05T1 (inch: CP 1.81.x). Four shank diameters (8, 10, 12 and 16 mm) cover bores from ⌀ 8.7 mm (.343") upward, each in right-hand and left-hand versions. The cylindrical shanks (tolerance h6, with a clamping flat) are clamped in standard boring bar holders.

Denitool is made by DENI AG (Veltheim, Switzerland) and its subsidiary Denitool Inc. (Raleigh NC, inch program).

![HardTurn 80° boring bar](https://www.denitool.com/assets/images/6/HardTurn-80-b5ae22e6.png)

## Key facts

- Workpiece: hardened materials up to 62 HRC (ISO material group H).
- Recommended insert grade (page statement): DS10 for steels up to 0.8 % carbon content. For steels with higher carbon content, the grades page lists DS20 as the high-end hard-turning grade (see https://www.denitool.com/md/en/insert-grades.md).
- Bar body: fully hardened carbide shank, coolant through the bar. The page states that the bars are stable, long-lasting and completely hard thanks to Denitool's patented manufacturing techniques.

## Terms used on this page

- **KAPR**: tool cutting edge angle (95° = the bar can face and turn up to a shoulder).
- **DMIN**: minimum bore diameter the bar can enter.
- **CLMBD**: maximum cutting (boring) depth at minimum bore diameter.
- **DCON**: shank (connection) diameter.
- **LF**: functional length (overall length of the bar).
- **WF**: functional width, the distance from the shank axis to the cutting corner.
- **H**: shank height across the clamping flat.
- **Designation** (e.g. E08H SCLPR-05): E = carbide shank with coolant hole, 08 = shank ⌀ 8 mm, H = length 100 mm, S = screw clamping, C = 80° rhombic insert, L = 95° tool cutting edge angle, P = 11° insert clearance, R/L = right/left hand, 05 = cutting edge length 5 mm (CP 05T1). Full key: https://www.denitool.com/md/en/boring-bar-designation.md
- **Insert size CP 05T1**: C = 80° rhombus, P = 11° clearance, 05 = 5 mm edge length, T1 = insert thickness 1.98 mm (.078"). Full key: https://www.denitool.com/md/en/insert-designation.md

## Tool data (95° SCLP, carbide shank with coolant channel)

Common to all sizes:

| Property | Value |
|---|---|
| KAPR | 95° |
| Insert size | CP 05T1 (CPGT/CPET/CPGW 05T1..; inch CP 1.81.x) |
| Insert screw | T22.050 (M2.2, Torx T7) |
| Torx driver | T7F (flag-type Torx T7 driver) |
| Tightening torque | 1.00 Nm (8.9 in-lb) |
| Shank tolerance | h6 |

The drawing on the page shows the right-hand tool.

![HardTurn 80° SCLP dimension drawing (DMIN, CLMBD, DCON, LF, WF)](https://www.denitool.com/files/GTC/product_family_drawings/HT80ISCL.png)

### Dimensions, metric (mm)

| Designation right hand | Designation left hand | DMIN | CLMBD | DCON | LF | WF | H |
|---|---|---|---|---|---|---|---|
| E08H SCLPR-05 | E08H SCLPL-05 | 8.7 | 48 | 8 | 100 | 4.5 | 7.5 |
| E10J SCLPR-05 | E10J SCLPL-05 | 10.7 | 60 | 10 | 110 | 5.5 | 9.5 |
| E12K SCLPR-05 | E12K SCLPL-05 | 12.7 | 72 | 12 | 125 | 6.5 | 11.5 |
| E16M SCLPR-05 | E16M SCLPL-05 | 16.7 | 96 | 16 | 150 | 8.5 | 15.5 |

### Dimensions, inch (converted from mm, the bars are metric)

| Designation | DMIN | CLMBD | DCON | LF | WF | H |
|---|---|---|---|---|---|---|
| E08H SCLPR/L-05 | .343" | 1.890" | .315" | 3.937" | .177" | .295" |
| E10J SCLPR/L-05 | .421" | 2.362" | .394" | 4.331" | .217" | .374" |
| E12K SCLPR/L-05 | .500" | 2.835" | .472" | 4.921" | .256" | .453" |
| E16M SCLPR/L-05 | .657" | 3.780" | .630" | 5.906" | .335" | .610" |

All eight bars are listed in both shops (CH: ch.denitool.com, US: store.denitool.com) under the same designations.

## Inserts for hard turning

The DS10 and DS20 hard-turning grades are offered in the CP 05T1 size with the FN-20 chip breaker, mainly in tolerance class E (CPET):

| Insert | Grades | Corner radius |
|---|---|---|
| CPET 05T101 FN-20 | DS10, DS20 | 0.1 mm |
| CPET 05T102 FN-20 | DS10, DS20 | 0.2 mm |
| CPET 05T104 FN-20 | DS10, DS20 | 0.4 mm |
| CPGT 05T104 FN-20 | DS10 (CH shop) | 0.4 mm |

CP 05T1 inserts with CBN tips (CPGW 05T102 CBN, CPGW 05T104 CBN) are also listed in the shops. Not every insert is listed in both shops; check the Store API. Insert overview for this size: https://www.denitool.com/en/indexable-inserts/i/cp-05t1-cp-1-81-2.html

## Cutting data

The page embeds two cutting data documents (Google Drive PDF viewer):

- Cutting data, international (metric): https://drive.google.com/file/d/0B0FVd0DDs6fFd0JBVEFVOUt3VUk/preview
- Cutting data, U.S. (inch): https://drive.google.com/file/d/0B0FVd0DDs6fFQUZYa2pxREpqUWc/preview

## Find and order (Store API)

- Boring bars, right hand: `https://ch.denitool.com/wp-json/wc/store/v1/products?search=SCLPR-05` (returns the 4 right-hand HardTurn bars)
- Boring bars, left hand: `https://ch.denitool.com/wp-json/wc/store/v1/products?search=SCLPL-05`
- Hard-turning inserts: `https://ch.denitool.com/wp-json/wc/store/v1/products?search=FN-20%20DS` (DS10/DS20 inserts, also returns WCET sizes for other families)
- Screw and driver: `search=T22.050`, `search=T7F` (T7F is listed in the CH shop only)
- Inch program (Denitool Inc.): same queries on `https://store.denitool.com/wp-json/wc/store/v1/products?search=SCLPR-05`

Note: `search=SCLP` also returns the MiniTools 80° square-shank external holders SCLPR/SCLPL 1212 F05 etc. (see https://www.denitool.com/md/en/minitools-80.md); the HardTurn bars are the ones starting with E08H, E10J, E12K, E16M.

## Related pages

- Turning overview: https://www.denitool.com/md/en/turning.md
- Boring bar designation: https://www.denitool.com/md/en/boring-bar-designation.md
- Insert designation: https://www.denitool.com/md/en/insert-designation.md
- Insert grades (DS10, DS20): https://www.denitool.com/md/en/insert-grades.md
- Tightening torque: https://www.denitool.com/md/en/tightening-torque.md
- MiniTools 80° (same CP 05T1 insert, bores from 5.8 mm): https://www.denitool.com/md/en/minitools-80.md
- Other turning families: https://www.denitool.com/md/en/microturn-a-s.md · https://www.denitool.com/md/en/microturn-d.md · https://www.denitool.com/md/en/smallbars-75.md · https://www.denitool.com/md/en/syntool.md · https://www.denitool.com/md/en/microcopy-d.md · https://www.denitool.com/md/en/microcopy-g.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
- Milling: 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
- Holemaking: 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
- Cut-off inserts code: https://www.denitool.com/md/en/cut-off-inserts-code.md
- All products: https://www.denitool.com/md/en/products.md
- Services, support, downloads, company: 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