PSC32 is polygon size 32 of the shank coupling standardised in ISO 26623.
The same coupling size is designated Coromant Capto® C3 by Sandvik Coromant and
PSK C3 in German-language catalogues. Mongtec Precision — a Taiwanese brand, designed and
engineered in Taichung, Taiwan — publishes 45 PSC32 article numbers in the PSC Product Catalog Ver 2026.07.
Designation system
Size 32 name
ISO 26623 polygon size
32
Mongtec designation
PSC32
Coromant Capto®
C3
PSK (German)
PSK C3
Trademark notice. Coromant Capto® is a registered trademark of Sandvik Coromant / Sandvik AB. Mongtec Precision Inc. is an independent tooling brand and is not affiliated with, endorsed by, or a licensee of Sandvik Coromant. Trademarks are used only to identify the polygon shank coupling sizes defined in ISO 26623 and to describe interface compatibility. Mongtec PSC products are Mongtec products; unit-for-unit interchange with any specific third-party cutting unit is confirmed by Mongtec engineering at RFQ.
Dimensioned drawing from the Mongtec catalogue.
Published PSC32 article numbers
Source: Mongtec PSC Product Catalog Ver 2026.07. This is the published range for polygon size 32; suitability for a specific machine, turret and cutting unit is confirmed by Mongtec engineering at RFQ.
Driven tool holders with a PSC32 output (BMT turret mount)
Besides static PSC32 tooling, Mongtec publishes 4 driven (live) tool holders that mount on a BMT turret and end in a PSC32 polygon coupling to ISO 26623. Cutting tools on these live stations are changed as complete PSC32 assemblies, the same way as on static stations.
Source: Mongtec VDI & BMT Driven Tools catalogue, Ver 2026.3. All units are 1:1 drive ratio. Output torque and coupling clamping torque are separate figures. EC = external coolant, TC = through coolant. BMT is an industry de-facto standard, not an ISO or DIN standard: bolt circle, key position and drive coupling can differ between machine builders at the same nominal size, so fit is confirmed against the actual turret drawing at RFQ.
All eight BMT-to-PSC driven article numbers (PSC32 and PSC40 outputs) are listed on the PSC overview.
