Main image of the Nextas R-Series Manual Chuck
Versatile Manual Tooling

R-Series Manual Chuck

Robust Precision, Simplified.

The Nextas R-Series Manual Chuck provides a reliable, high-precision foundation for your workshop. Fully compatible with the System 3R tooling standard, this chuck offers exceptional versatility for job shops and production environments alike. Its simple, robust manual clamping mechanism ensures a secure grip and excellent repeatability without the need for pneumatic or hydraulic lines, making it perfect for quick setups on any machine.

Core Advantages

  • High Repeatability: Achieves a positioning accuracy of ≤ 0.005mm, allowing for confident transfer of workpieces between setups and machines.
  • Simple Manual Clamping: Fast and secure clamping with a single lever or key. No need for external power sources, simplifying installation and use.
  • System 3R Compatibility: Designed to seamlessly integrate with the widely used System 3R standard, including pallets, holders, and electrodes.
  • Hardened & Ground Body: Constructed from high-quality tool steel, hardened and precision-ground for maximum durability, rigidity, and a long service life.

Precision Clamping, Effortlessly

The Nextas R-Series Chuck simplifies precision workholding. The manual clamping mechanism is straightforward yet powerful. A simple turn of a clamping key actuates the internal locking system, drawing the reference element (pallet or holder) securely against the Z-reference faces. This direct mechanical action provides excellent tactile feedback and ensures a consistently strong and stable clamp, giving the operator full confidence in the setup. The design eliminates the complexity of air or hydraulic lines, making it exceptionally easy to install and move between different machines.

Close-up of the manual clamping mechanism on the R-Series Chuck

Engineered for Versatility

Manufactured from high-grade tool steel and hardened for wear resistance, the R-Series Chuck is built to last. Its low-profile design provides excellent access for tools and spindles, making it suitable for a wide range of applications, from vertical milling to sinker EDM. The universal System 3R-compatible interface means you can standardize your workholding across the entire workshop, streamlining your processes and reducing the need for multiple, disparate systems.

The Smart Choice for Job Shops

For workshops that value flexibility and precision, the R-Series Manual Chuck is an ideal investment. It provides the accuracy benefits of a reference tooling system without the infrastructure requirements of automated chucks. This makes it perfect for prototyping, small-batch production, and situations where setups change frequently. Standardize your process, reduce setup time, and improve part quality with this simple, effective solution.

R-Series Chuck being used in a precision job shop environment

Key Technical Specifications

Parameter Specification (Model Example: NEX-R80M)
Compatibility System 3R (MacroMagnum, etc.)
Repeatability ≤ 0.005 mm
Clamping Power ~8000 N
Actuation Manual, with clamping key/lever
Required Torque ~20 Nm
Indexing Positions 4 x 90°
Body Material Hardened Tool Steel
Weight 5.0 kg

Typical Application Fields

Manual chuck used in a die-sinking EDM machine

EDM & Milling

The R-Series chuck is a workhorse for both EDM and milling machines. Its robust build handles milling forces, while its precision is perfect for setting up electrodes and workpieces for EDM operations.

Quick setup on a 3-axis CNC milling center with a pallet

Job Shops & Prototyping

Ideal for environments with high-mix, low-volume work. The manual chuck allows for extremely fast and precise changeovers between different jobs without complex automation.

Using the R-Series chuck on a CMM for inspection

Quality Control & Inspection

Use the same reference system on your CMM or inspection station. A workpiece can be moved directly from the machine to inspection, ensuring consistent measurement results.

Setting up a workpiece on a workbench before machining

Offline Setup

Mount workpieces onto System 3R pallets at a separate workstation while the machine is running. The manual chuck on the machine table makes swapping the finished part for the new one a quick and simple task.

Case Study

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Frequently Asked Questions

01 What is R-Series Manual Chuck and who is it for?
R-Series Manual Chuck — R-Series Manual Chuck.
02 What are the key specifications of R-Series Manual Chuck?
Compatibility: System 3R (MacroMagnum, etc.); Repeatability: ≤ 0.005 mm; Clamping Power: ~8000 N; Actuation: Manual, with clamping key/lever; Required Torque: ~20 Nm; Indexing Positions: 4 x 90°
03 Which machines or use cases is R-Series Manual Chuck compatible with?
3R interface, 5-axis, EDM, ITS system, milling, zero-point systems
04 How is R-Series Manual Chuck installed or mounted?
pneumatic/hydraulic interface, locating pins
05 Where can I get CAD files or technical documentation?
If you need STEP/IGES or 2D drawings, please Contact us.

Resources & Downloads

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