10mm ER 16-GB Collet with 8mm Internal Square For Threading, 15 µm Runout - TECWERK

Take advantage of the combination of precise runout control, a dedicated internal square for tapping, and compact dimensions to maintain reliable tapping and clamping operations; order through Metav Werkzeuge or contact our consultants for tailored advice.

Collet ER-GB (10 mm clamping, 8 mm internal square) – TECWERK

The ER-GB collet is an ER-series tapping collet with an internal 8 mm square, designed for use in ER collet chucks according to DIN 6499 for secure tap holding and accurate machining.

ER-GB design to DIN 6499 compliance
Internal 8 mm square for thread tapping
10 mm clamping diameter for common tooling
Runout accuracy 15 µm for consistent results

Achieve consistent accuracy with low runout

High-precision machining relies on minimal eccentricity between tool and spindle; the runout accuracy 15 µm specified for this collet ensures that cutting forces remain balanced and tool life is extended. Reduced runout directly improves surface finish and thread quality, which is particularly important in tapping operations and fine finishing. The result is repeatable machining performance, fewer rejects and less rework when consistent tolerances are required.

Secure tapping thanks to an integrated square shank

The 8 mm internal square is integrated to accept tap shanks for thread cutting without additional adaptors, increasing axial grip and reducing the risk of slippage during reversing cuts. Compliance with DIN 6499 means the geometry matches standard ER collet chucks and tapping holders, so the holder-to-tool interface remains predictable. For shops that alternate between drilling, reaming and tapping, this configuration simplifies tooling changes and reduces setup time.

Compact dimensions that free up spindle space

With a nominal 10 mm clamping diameter and a length of 34 mm, the collet offers a compact footprint for use in confined setups or where extended reach must be avoided. The short length helps to minimise lever arm effects and vibration, supporting stable machining even at higher spindle speeds. The compact form also aids accessibility in multi-head machines or tight fixture designs while preserving the clamping force needed for tapping applications.

Interchangeability and practical advantages on the shop floor

Designed for use in ER-style chucks and tapping holders, the collet enables quick replacement and standardised inventory across machines equipped for ER tooling. The combination of a dedicated internal square and standard ER fitment reduces the need for specialised adapters, translating into simpler stock management and faster changeovers. For production environments aiming to increase uptime, this component contributes to a predictable process chain and steady part quality.

Choose the TECWERK ER-GB collet for reliable tapping performance and source it via Metav Werkzeuge for secure supply and expert consultation – contact info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: 2000834966NW
• SKU: 2000834966NW
• Type: ER 16-GB
• Product type: Collet GB

Core data

• Clamping diameter: 10 mm
• Runout accuracy: 15 µm
• Length: 34 mm
• Internal square: 8 mm
• Packaging unit: 1

Special features

• ER-GB design according to DIN 6499
• Internal square for thread cutting applications
• Suitable for tapping and ER collet chucks
• Compact dimensions for reduced overhang

FAQ

What is the intended application of this collet?
The ER-GB collet from TECWERK (SKU 2000834966NW) is intended primarily for tapping and thread-cutting operations where a secure internal square grip is required.

Which chuck types are compatible with the collet?
Compatibility is with ER-series collet chucks and tapping holders conforming to DIN 6499; the geometry of the ER-GB design ensures fitment in standard ER toolholders.

How does the 15 µm runout specification affect machining results?
A runout of 15 µm reduces tool vibration and concentricity errors, improving thread accuracy and surface finish when the ER-GB collet is used in tapping operations.

Can the collet be used for drilling or reaming as well as tapping?
The ER-GB variant is optimised for tapping due to the internal square, but it can be used for other operations where the tool shank and required clamping diameter match the collet specifications.

What are the physical dimensions that determine suitability for tight setups?
Key dimensions are 34 mm length and 10 mm clamping diameter; these compact measurements help in applications with limited spindle overhang.

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