| Mongtec model | SAU825 |
|---|---|
| Machine brand | Citizen |
| Citizen reference code | SAU825 |
| Holder type | Sleeves |
| Max tool shank | 25.4 mm |
| Holder shank diameter | 31 mm |
| Collet | — (no collet; tool clamped directly) |
| Drive | Static (not driven) |
| Max speed | — |
| Brand | Mongtec Precision Inc. |
Source: Mongtec Swiss Type Toolholders catalogue, Ver 2026.07.
Swiss-type (sliding headstock) lathes hold their tooling in fixed positions on a gang or comb layout rather than in a rotating turret. Each position is machine-specific: the holder body, the mounting face and the drive coupling are defined by the machine builder, which is why a Swiss-type holder is identified by the builder's own reference code rather than by a BMT or VDI size.
SAU825 is a static position — the tool does not rotate. It holds the cutting tool rigidly for turning, drilling or boring while the workpiece turns.
Mongtec supplies SAU825 to the Citizen reference SAU825, so it occupies the same holder position on the machine. That reference is the fastest way to specify what you need: quote the code from your machine's tooling list and Mongtec engineering matches it, then confirms the fit against your actual machine and station before quoting.
Citizen is a registered trademark of its respective owner. Mongtec Precision is an independent tooling brand with no affiliation to, endorsement by or licence from Citizen. The Citizen reference code is quoted only to identify which holder position and machine the Mongtec part is built for; fit is confirmed by Mongtec engineering at RFQ.
| Model | Type | Max tool shank | Collet | Drive |
|---|---|---|---|---|
| GDE1025 / GDE10254 | Static drilling toolholders (internal coolant) | 19.05 mm | — | Static |
| MSC507 | Axial toolholders | 7.0 mm | ER11 | 1:1 · 10,000 rpm |
| GDF1801 | Static 4 holes drilling toolholders | 25.4 mm | — | Static |
| GDF1207 | Static 3 holes drilling toolholders | 19.05 mm | — | Static |
The drawing above is the published catalogue drawing, and the dimension letters are the columns of the table below. What Mongtec confirms for you is the interface on your machine, the reach for the operation, and the final article number. Send the machine and the operation; the check is free.
Send my machine and get the article number →SAU825 is built to the Citizen reference SAU825 for Citizen Swiss-type (sliding headstock) lathes. Holder positions differ between machine generations, so send Mongtec your machine model and the station you want to use and engineering confirms the fit before quoting.
Mongtec supplies SAU825 to the Citizen reference so that it occupies the same holder position. Mongtec is an independent tooling brand and is not affiliated with Citizen; interchange in your specific machine and setup is confirmed by Mongtec engineering at RFQ.
SAU825 takes tools up to 25.4 mm, on a 31 mm holder shank. Collets are supplied separately — tell Mongtec the shank diameters you intend to run and they are quoted with the holder.
Send the machine model, the station you want to use and the tools you intend to run. Anything you do not know, Mongtec works out from the machine model — an incomplete enquiry is still worth sending. Dimensioned drawings are supplied by email once the enquiry is open.
All Swiss-type toolholders · Citizen machines · All Mongtec article numbers
Part-number cross-reference — Citizen Cincom →
All 34 Mongtec holders for Citizen Cincom Swiss-type lathes, listed by Citizen Cincom part number and machine series.