42mm ER Collet Nut With Eccentric Ring, M32 x 1.5 Thread - TECWERK

Take advantage of the combination of a balanced execution, an eccentric ring and DIN‑compliant dimensions for reliable, repeatable clamping performance in workshops and production cells; order the clamping nut directly via Metav Werkzeuge or consult our specialists for integration advice.

ER clamping nut ER 25, 42 mm with eccentric ring (TECWERK)

The ER clamping nut ER 25, 42 mm with eccentric ring is a standard‑execution clamping component for ER collet chucks, designed to ensure secure tool retention and reduced runout.

• Standard execution with eccentric ring
• For ER collet chucks ER 25
• Thread M32 x 1.5
• Balanced design to reduce runout

Secure clamping for consistent machining performance

A precisely produced clamping nut with an eccentric ring transforms the clamping interface into a predictable element of the toolholding system. The eccentric ring compensates minor axial offsets during tightening, which improves clamping accuracy and reduces the risk of tilted collets under load. Specification conformity with DIN 6499 means simple interchangeability across compatible ER systems, helping to maintain stable cutting conditions and repeatable setups on milling spindles and toolholders.

Seamless integration through standardised threads and sizes

With a M32 x 1.5 thread and a nominal diameter of 42 mm, this component is matched to ER 25 collet chucks and accepts standard tooling dimensions. The thread profile and size allow for straightforward replacement of worn nuts without modifying existing holders, so downtime is minimised. The measured fit and DIN alignment simplify procurement planning and reduce inventory complexity when multiple machines use the same clamping ecosystem.

Reduced vibration and improved runout at higher speeds

The item’s balanced execution lowers eccentricity in the rotating assembly, thereby reducing vibration and improving surface finish on workpieces. For operations that demand dimensional accuracy, a balanced clamping nut contributes to lower tool deflection and consistent concentricity, which is particularly beneficial in finishing passes. Where spindle speeds are elevated, the balanced design helps maintain stability and prolongs the service life of collets and toolholders.

Practical handling and workshop benefits

The standard execution with eccentric ring offers quick assembly and reliable mechanical engagement, enabling maintenance teams to swap components without complex fixtures. The robust construction and conformity to ER dimensions make this clamping element suitable for general workshop use as well as in small manufacturing runs. Clear identification and compatibility with ER 25 reduce setup errors and support lean tooling management across multiple machines.

For precise clamping solutions from TECWERK and expert procurement support from Metav Werkzeuge, request a technical consultation or place an order via info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 2000833995NW
• Product name: ER clamping nut ER 25, 42 mm with eccentric ring
• Manufacturer: TECWERK
• Product type: ER clamping nut
• Packaging unit: 1

Facts

• Thread: M32 x 1.5
• Diameter: 42 mm
• Suitable for: ER 25
• Standard: DIN 6499

Special features

• Standard execution with eccentric ring
• Balanced execution to reduce runout
• Designed for ER collet chucks

FAQ

What collet size is this clamping nut intended for?
This clamping nut is designed for use with ER 25 collet chucks and matches the standard ER 25 dimensions.

Which thread is required to fit this nut?
The item uses an M32 x 1.5 thread as specified for the component, enabling direct replacement in compatible holders.

Does the nut meet industry standards for interchangeability?
Yes, the component conforms to DIN 6499, ensuring compatibility with standard ER systems.

How does the eccentric ring affect performance?
The eccentric ring helps compensate minor axial misalignment during tightening, improving clamping accuracy and reducing collet tilt.

Is this product balanced for rotational use?
The nut is supplied in a balanced execution, which reduces runout and vibration during rotation.

Manufacturer/Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund