GAETANO CAPORALI ERC25SJ.D ER25 steel sealed collets with channels along hole DIN ISO 15488 (DIN6499), nominal diameter of your choice
(Incl. Tax: €53.44)
The ER25 clamping collets with internal coolant channels, compliant with DIN ISO 15488 (DIN 6499), are designed for precision tool clamping in ER toolholders with through-tool coolant supply. Internal channels guide the coolant along the collet bore directly to the cutting area, improving cooling efficiency and chip evacuation. They provide average runout accuracy ≤0.008 mm, clamping range 0.1 mm, and coolant pressure up to 120 bar, ensuring high rigidity, precision and reliability in CNC machining applications.
The ER25 clamping collets with internal coolant channels, manufactured according to DIN ISO 15488 (DIN 6499) standard, are designed to provide highly precise tool clamping while allowing coolant to be delivered directly along the tool shank. This type of collet is typically used in ER tool holders installed on CNC machining centers, turning machines and automated production systems where stable tool clamping and efficient coolant management are essential to achieve high surface quality and dimensional accuracy of machined components.
The collet design integrates internal lubrication channels along the central bore which allow coolant to flow through the tool holder directly to the cutting area. Coolant sealing is ensured by the short precision slots on the collet body that maintain the fluid inside the system even under high pressure conditions up to 120 bar, ensuring efficient cooling of the cutting tool and improved chip evacuation during demanding machining operations.
The high manufacturing accuracy provides an average runout precision of up to 0.008 mm, ensuring extremely stable tool rotation and significantly reducing vibration, premature tool wear and dimensional deviations on the machined workpiece. This level of precision combined with the structural rigidity of the collet contributes to improved machining performance in milling, drilling, boring and other precision metalworking operations.
The ER25SJ collet offers a clamping range for tools between 3 and 16 mm with a clamping capacity of 0.1 mm, enabling precise tool positioning and secure holding even during heavy cutting operations. In order to guarantee proper coolant sealing and optimal concentricity, the tool shank diameter must correspond to the nominal diameter of the collet and the tool must be inserted along the entire clamping length of the collet.
The system is compatible with ER nuts equipped with eccentric extraction systems, allowing fast installation and removal of the collet from the tool holder and facilitating maintenance and tool change operations within production environments.
Thanks to the combination of high precision, structural rigidity and efficient coolant delivery, ERC25SJ collets represent a reliable solution for high precision machining applications and industrial environments where tool clamping stability and machining quality play a critical role in overall production efficiency.
Technical data ER25 collet with coolant channels ERC25SJ
| Parameter | Value |
|---|---|
| Standard | DIN ISO 15488 (DIN 6499) |
| Collet type | ER collet with coolant channels along bore |
| Article | ERC25SJ |
| ER size | 25 |
| Tool diameter D | 3 – 16 mm |
| Clamping range | 0.1 mm |
| Average runout accuracy | 0.008 mm |
| Maximum coolant pressure | 120 bar |
| Number of slots | 4 + 4 |
| Collet diameter progression | D3 ÷ D16 x 1 mm |
| Dimension A | 25 mm |
| Dimension B | 26 mm |
| Angle α | 8° |
| Length L | 34 mm |
| Dimension H | 12 mm |
| Diameter D | 1 – 20 mm |
- Brand:
- GAETANO CAPORALI
- Typology:
- Solid sealed collets
- Size:
- ER25 - 430E
