





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.

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.

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

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.

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.

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.

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






Frequently Asked Questions
01 What is R-Series Manual Chuck and who is it for?
02 What are the key specifications of R-Series Manual Chuck?
03 Which machines or use cases is R-Series Manual Chuck compatible with?
04 How is R-Series Manual Chuck installed or mounted?
05 Where can I get CAD files or technical documentation?
Resources & Downloads
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