Excellence in Detailed and Complex Component Machining

At Precisium, jig grinding is a core capability that significantly enhances our manufacturing precision. Equipped with state-of-the-art CNC Moore and CNC Hauser machines, we excel in producing high-precision parts for various applications across multiple industries.

Jig grinding allows for the production of complex parts with exceptional accuracy. We specialize in:

  • Ring Gauges and Setting Rings: Essential for ensuring parts meet precise dimensional standards.
  • Setting Rings: Critical for setting internal micrometers.
  • Oval Plug Gauges (Slot Gauges): Used for measuring and verifying nuts, slots, and other intricate features within hardware components.
  • Positional Holes for Guide Plates on Fine-Stamping Tools: Precision grinding of these holes ensures exact alignment and functionality in stamping operations.
  • Positional Holes in Parts for Control Fixtures: Vital for the assembly and function of control fixtures that maintain the quality of mass-produced parts.
  • Toleranced Bores on Various Machine Parts: Ensuring each component fits perfectly within its designated assembly, contributing to the overall integrity and performance of machinery.

Precision and Quality Control

Our jig grinding capabilities allow us to achieve exceptional levels of precision across all projects, ensuring:

  • Tolerances: Every part fits within the strict dimensions specified by client designs.
  • Roundness and Concentricity: Essential for parts that require perfect circular geometry for proper functionality.
  • Smooth Surfaces: Achieving fine finishes that reduce friction and wear, enhancing the longevity and performance of parts.
  • True Positioning of Holes: Critical for parts that rely on exact positioning for assembly and operational succes

Enhancing Product Functionality and Assembly

The precision achieved through our jig grinding process not only ensures the high quality of components but also facilitates easier and more accurate assembly of complex systems. This capability is crucial for industries that require high reliability and precision, such as aerospace, automotive, and medical device manufacturing, where even minor deviations can lead to significant issues in product functionality.

What is Jig Grinding?

Jig grinding is a specialized grinding process used to accurately finish complex and detailed parts, particularly those with precise holes, contours, and surfaces requiring exceptionally tight tolerances and high-quality finishes. It is often employed when part production demands a level of accuracy that standard milling or turning processes cannot achieve.

How it works?

Jig grinding utilizes a machine tool that uses a grinding wheel as the cutting tool. The grinding wheel is typically very small, mounted on a spindle, and can rotate at high speeds. Here’s a breakdown of how jig grinding is typically executed:

  1. Machine Setup: Jig grinders are similar to jig borers, where the spindle does not rotate during operation. Instead, the grinding wheel mounted on the spindle rotates. The workpiece is secured on the machine's table, which can move on the X and Y axes.
  2. Precise Movements: The key characteristic of a jig grinding machine is its ability to move the grinding wheel or the table holding the workpiece with very high precision. Precision air or hydraulic components control these movements.
  3. High-Speed Spindle: The spindle typically operates at very high speeds (up to several tens of thousands of RPM), allowing for the use of small diameter grinding wheels to make very precise cuts and finishes.
  4. Complex Geometries: Utilizing controlled movement and high-speed rotation, jig grinding can achieve detailed and precise cuts, making it suitable for grinding complex geometries like holes, pockets, slots, and other intricate shapes.


  • Versatility: Capable of working with a variety of materials including metals, glass, and ceramics.
  • Complex Shapes: Particularly effective for making very precise cuts, including contours, arcs, and holes with highly precise positioning.

Key Considerations

While jig grinding is incredibly precise, it also requires highly specialized equipment and skills, making it more costly and time-consuming than some other machining processes. Moreover, because of the high level of precision and the fine nature of the grinding wheels used, it's not suitable for removing large amounts of material. Instead, it's best used for finishing surfaces after they’ve been roughly machined using other methods.