ISO Tool Holders
ISO Tool Holders
Compact ISO20, ISO25 and ISO30 collet chucks from the SUNSTONE 2026 catalog, including high-speed ER, GER and GSK families.
Catalog-matched product information.
High-Speed ER Collet Chucks
Small-diameter high-speed ER holders for ISO20, ISO25 and ISO30 interfaces. Clean and lubricate the nut and holder threads before assembly.
High-Speed ER Collet Chucks structure
Original sectional drawing and dimension references from the SUNSTONE 2026 catalog (P25).
Representative order codes and dimensions
| Interface | Order code | L | L1 | L2 | D | Clamping range |
|---|---|---|---|---|---|---|
| ISO20 | ER16-35MS | 68.3 | 35 | 26.2 | 22 | 1-10 mm |
| ISO25 | ER16-35MS | 74.7 | 35 | 26.2 | 22 | 1-10 mm |
| ISO25 | ER20-35MS | 74.7 | 35 | 26.2 | 28 | 1-13 mm |
| ISO30 | ER16-60MS | 107.8 | 60 | 40.9 | 22 | 1-10 mm |
| ISO30 | ER20-60MS | 107.8 | 60 | 40.9 | 28 | 1-13 mm |
| ISO30 | ER25-42MS | 89.8 | 42 | 22.9 | 35 | 3-16 mm |
Representative rows transcribed from the cited catalog pages. Download the catalog for the complete range and technical notes.
GER Collet Chucks
Fully round GER nut geometry reduces noise and air resistance for high-speed operation on compact ISO interfaces.
GER Collet Chucks structure
Original sectional drawing and dimension references from the SUNSTONE 2026 catalog (P26).
Representative order codes and dimensions
| Interface | Order code | L | L1 | L2 | D | Clamping range |
|---|---|---|---|---|---|---|
| ISO20 | GER16-35 | 68.3 | 35 | 26.2 | 22 | 1-10 mm |
| ISO25 | GER16-35 | 74.7 | 35 | 26.2 | 22 | 1-10 mm |
| ISO25 | GER20-35 | 74.7 | 35 | 26.2 | 28 | 1-13 mm |
| ISO30 | GER16-60 | 107.8 | 60 | 40.9 | 22 | 1-10 mm |
| ISO30 | GER20-60 | 107.8 | 60 | 40.9 | 28 | 1-13 mm |
| ISO30 | GER32-60 | 107.8 | 60 | 40.9 | 48 | 3-20 mm |
Representative rows transcribed from the cited catalog pages. Download the catalog for the complete range and technical notes.
GSK Collet Chucks
A 4° single-side taper collet improves repeat clamping accuracy, while the round nut supports lower-noise high-speed use.
GSK Collet Chucks structure
Original sectional drawing and dimension references from the SUNSTONE 2026 catalog (P27).
Representative order codes and dimensions
| Interface | Order code | L | L1 | L2 | D | Clamping range |
|---|---|---|---|---|---|---|
| ISO20 | GSK10-40 | 73.3 | 40 | 31.2 | 27.5 | 3-10 mm |
| ISO25 | GSK10-40 | 79.7 | 40 | 31.2 | 27.5 | 3-10 mm |
| ISO30 | GSK10-60 | 107.8 | 60 | 40.9 | 27.5 | 3-10 mm |
| ISO30 | GSK16-60 | 107.8 | 60 | 40.9 | 40.5 | 3-16 mm |
Representative rows transcribed from the cited catalog pages. Download the catalog for the complete range and technical notes.
Where this system fits.
Selection depends on spindle interface, cutting process, projection length, tool diameter and required rigidity.
High-speed engraving
Contact SUNSTONE with your interface, tool size and machining requirement.
Small machining centers
Contact SUNSTONE with your interface, tool size and machining requirement.
Precision finishing
Contact SUNSTONE with your interface, tool size and machining requirement.
Compact spindles
Contact SUNSTONE with your interface, tool size and machining requirement.
Send us your tooling requirement.
Share your machine interface, holder type, tool diameter and quantity. We will reply with product guidance and quotation information.
