From Spindles to Precision Components: Expanding the Role of a Precision Manufacturer

For decades, Gilman Precision has been known for designing and manufacturing high-performance machine tool spindles and precision linear slides. These products demand extremely tight tolerances, careful material control, and deep expertise in grinding spindles, machining, and assembly.

What many engineers quickly realize, however, is that the same capabilities required to build a spindle are the exact capabilities needed to manufacture many of the most demanding components used across modern industry.

That realization has led many precision manufacturers—including Gilman—to expand beyond finished products and offer precision contract manufacturing for mission-critical components.

Why spindle manufacturing builds exceptional manufacturing capability

Building a spindle is not a simple machining task. It requires multiple advanced processes working together:

• Precision OD grinding for bearing journals
• Precision ID grinding for housings and bores
• Tight control of concentricity and runout
• High-accuracy shaft machining
• Careful assembly of rotating systems

These capabilities are developed to support spindle performance, but they translate directly to other tight-tolerance parts used across industries such as aerospace, medical devices, industrial machinery, and defense.

When a company can build the rotating heart of a machine tool, it has already developed the skills needed to manufacture many other demanding components.

Precision capabilities that support contract manufacturing

The same processes used to produce spindles and slides can be applied to a wide range of precision components, including:

• Bearing housings
• Precision shafts
• Rotor assemblies
• Hydraulic pistons and valve components
• Tooling and machine components
• Aerospace rotating parts

Many of these parts require careful dimensional control to achieve the final performance required by the end application.

Where precision grinding adds the most value

Grinding is often the critical finishing step for components that must meet tight geometric and surface finish requirements. Common examples include:

• Bearing journals on rotating shafts
• Precision bores for bearing fits
• Hardened wear surfaces
• Components requiring excellent roundness or cylindricity
• Parts requiring micron-level dimensional control

In these applications, the experience developed in spindle manufacturing becomes especially valuable.

A natural extension of precision engineering

Rather than representing a shift away from core expertise, contract manufacturing is often a natural extension of it.

The same engineering mindset used to design and manufacture precision motion systems can be applied to help customers solve complex manufacturing challenges. By combining grinding expertise, precision machining, and a deep understanding of rotating systems, manufacturers can support customers producing critical components across many industries.

In this way, the capabilities developed for building spindles and slides can become the foundation for a broader role as a trusted precision manufacturing partner.