EM69/79 Series: the complete block in a single setup
The EM69ATC and EM79 are Rottler's automatic CNC centers for complete engine block work: boring and sleeving, surfacing, line boring, lifters. The block is mounted once, the machine runs the operations in sequence, with 360° rotation to present each face.
The EM79 brings the large dual-station table, the EM69ATC a 24-tool changer and linear roller guideways. Each is available with an automatic tool changer for production. Not sure which one? Tell us your blocks, your volumes and your other operations: we will point you to the right one.
Rottler · Automatic 3-axis CNC centersEM69/79 SeriesA single setup
Boring, surfacing, line boring, lifters: the block stays in place while the machine moves from one operation to the next.
Tool changer
Automatic changer for production: 24 tools on the EM69ATC, ATC version of the EM79. Cycles run one after another without an operator.
Conversational control
Touch-screen control: everyday operations are programmed in minutes, with no prior CNC skills.
Lasting precision
Rigid structure, direct-drive ball screws, servo motors: positioning accuracy stays stable over time.
The EM69/79 Series models.
3/4-axis center with 24-tool automatic changer. Linear roller guideways, 500 × 1501 mm table, 0 to 8,000 rpm spindle.
The dual-work-station multi-purpose center: 2325 × 575 mm table, cylinder boring from 19 to 178 mm, line boring from 48.5 to 150 mm, CAT 40 spindle.
The EM79 with automatic tool changer and extended cycles, for production: operations run on their own.
Specifications.
| EM69ATC | EM79 | EM79ATC | |
|---|---|---|---|
| Axes | 3 / 4 | 3 | 3 |
| Tool changer | 24 tools | — | Automatic |
| Guideways | Linear roller bearings | TURCITE box ways | TURCITE box ways |
| Table | 500 × 1501 mm | 2325 × 575 mm (5 T-slots) | 2325 × 575 mm (5 T-slots) |
| X / Y / Z travels | On request | 1829 / 355 / 457 mm | 1829 / 355 / 457 mm |
| Cylinder boring (optional heads) | On request | 19 – 178 mm | 19 – 178 mm |
| Line boring (optional heads) | On request | 48.5 – 150 mm | 48.5 – 150 mm |
| Power supply | On request | 208-240 V, single phase | 208-240 V, single phase |
Applications.
- Boring and sleeving of engine blocks: automotive, racing, diesel
- Surfacing of blocks and cylinder heads
- Line boring: crankshaft and camshaft bearings
- Connecting rod and lifter boring
- Machining of custom parts
The full pages.
The full page on the EM79 and EM79ATC: dual stations, automatic line boring, connecting rods.
See the series →The full page on the EM69: EM69ATC, and the EM69P and EM69HP digitizing and porting versions.
See the series →Before you choose.
EM69ATC or EM79?
EM69ATC: 3/4-axis center with 24-tool automatic changer and linear roller guideways, for the production of blocks and custom parts. EM79: the large dual-station table, line boring and connecting rods. Tell us your blocks and your volumes, we will point you to the right one.
Does the block stay in place for every operation?
Yes: boring, surfacing, line boring, lifters, with 360° rotation to present each face, in a single setup.
Where are the full specifications?
On the EM70 Series (EM79, EM79ATC) and EM60 Series (EM69ATC, EM69P, EM69HP) pages, or in the documentation to request at the bottom of the page.
The detailed brochure.
Specifications, tooling, fixtures and options of the EM69/79 Series. Leave your details below and you will receive the documentation.

EM69/79 Series: the complete block in a single setup
The EM69ATC and EM79 are Rottler's automatic CNC centers for complete engine block work: boring and sleeving, surfacing, line boring, lifters. The block is mounted once, the machine runs the operations in sequence, with 360° rotation to present each face.
The EM79 brings the large dual-station table, the EM69ATC a 24-tool changer and linear roller guideways. Each is available with an automatic tool changer for production. Not sure which one? Tell us your blocks, your volumes and your other operations: we will point you to the right one.
Rottler · Automatic 3-axis CNC centersEM69/79 SeriesA single setup
Boring, surfacing, line boring, lifters: the block stays in place while the machine moves from one operation to the next.
Tool changer
Automatic changer for production: 24 tools on the EM69ATC, ATC version of the EM79. Cycles run one after another without an operator.
Conversational control
Touch-screen control: everyday operations are programmed in minutes, with no prior CNC skills.
Lasting precision
Rigid structure, direct-drive ball screws, servo motors: positioning accuracy stays stable over time.
The EM69/79 Series models.
3/4-axis center with 24-tool automatic changer. Linear roller guideways, 500 × 1501 mm table, 0 to 8,000 rpm spindle.
The dual-work-station multi-purpose center: 2325 × 575 mm table, cylinder boring from 19 to 178 mm, line boring from 48.5 to 150 mm, CAT 40 spindle.
The EM79 with automatic tool changer and extended cycles, for production: operations run on their own.
Specifications.
| EM69ATC | EM79 | EM79ATC | |
|---|---|---|---|
| Axes | 3 / 4 | 3 | 3 |
| Tool changer | 24 tools | — | Automatic |
| Guideways | Linear roller bearings | TURCITE box ways | TURCITE box ways |
| Table | 500 × 1501 mm | 2325 × 575 mm (5 T-slots) | 2325 × 575 mm (5 T-slots) |
| X / Y / Z travels | On request | 1829 / 355 / 457 mm | 1829 / 355 / 457 mm |
| Cylinder boring (optional heads) | On request | 19 – 178 mm | 19 – 178 mm |
| Line boring (optional heads) | On request | 48.5 – 150 mm | 48.5 – 150 mm |
| Power supply | On request | 208-240 V, single phase | 208-240 V, single phase |
Applications.
- Boring and sleeving of engine blocks: automotive, racing, diesel
- Surfacing of blocks and cylinder heads
- Line boring: crankshaft and camshaft bearings
- Connecting rod and lifter boring
- Machining of custom parts
The full pages.
The full page on the EM79 and EM79ATC: dual stations, automatic line boring, connecting rods.
See the series →The full page on the EM69: EM69ATC, and the EM69P and EM69HP digitizing and porting versions.
See the series →Before you choose.
EM69ATC or EM79?
EM69ATC: 3/4-axis center with 24-tool automatic changer and linear roller guideways, for the production of blocks and custom parts. EM79: the large dual-station table, line boring and connecting rods. Tell us your blocks and your volumes, we will point you to the right one.
Does the block stay in place for every operation?
Yes: boring, surfacing, line boring, lifters, with 360° rotation to present each face, in a single setup.
Where are the full specifications?
On the EM70 Series (EM79, EM79ATC) and EM60 Series (EM69ATC, EM69P, EM69HP) pages, or in the documentation to request at the bottom of the page.
The detailed brochure.
Specifications, tooling, fixtures and options of the EM69/79 Series. Leave your details below and you will receive the documentation.

Your need doesn't fit the page? Describe it.
Your engines, your operations, your volume: the RECTIPERF assistant points you to the right Rottler series, using the content of this site.
+33 (0)4 58 10 59 66
Price request, series documentation, training, after-sales service: Jonathan answers you. Or write to j.philips@rectiperf.com.
Your need doesn't fit the page? Describe it.
Your engines, your operations, your volume: the RECTIPERF assistant points you to the right Rottler series, using the content of this site.
+33 (0)4 58 10 59 66
Price request, series documentation, training, after-sales service: Jonathan answers you. Or write to j.philips@rectiperf.com.