Ask an Engineer: 262-377-2434
Semiconductor equipment leaves no margin for motion error. When a wafer handling system, inspection platform, or lithography stage is off by a fraction of a micron, yield suffers, throughput drops, and the equipment engineer's reputation goes with it. The motion components inside that equipment carry performance accountability that most component suppliers don't fully appreciate.
Gilman Precision engineers spindles, linear slides, and precision motion assemblies for the designers and manufacturers of semiconductor production equipment. With 75 years of precision manufacturing experience, fully domestic design and production in Grafton, Wisconsin, and a team that engages at the application engineering level, Gilman is the motion partner that semiconductor equipment builders call when catalog components don't meet the spec.
| When the application demands micron-level accuracy across millions of cycles, you need a motion partner who understands what that actually means on the shop floor. |
| Ready to talk through your accuracy requirements? Request a Quote → |
Most precision manufacturing applications ask a lot from motion components. Semiconductor equipment asks more. The performance thresholds in wafer fabrication, inspection, and metrology equipment push precision, repeatability, and environmental compatibility requirements beyond what most industrial motion suppliers are designed to meet.
Semiconductor equipment operates at tolerances that make tight-tolerance machining look forgiving. Wafer positioning systems, inspection stage drives, and metrology platforms require motion components that hold accuracy and repeatability across the full range of travel, not just at a nominal position. Bearing preload, geometric accuracy of slide ways, spindle runout, and thermal behavior all contribute to system-level positioning error. Gilman's engineering process addresses each of these variables at the component design stage, before they become integration problems.
Semiconductor fabrication environments are contamination-controlled. Motion components that generate particulates, require frequent re-lubrication, or outgas in cleanroom conditions are not acceptable in this application space. Gilman designs motion components with lubrication strategies, surface treatments, and sealing configurations appropriate for the operating environment, including cleanroom-compatible options for sensitive process equipment.
Semiconductor production equipment runs continuously, often across three shifts with minimal scheduled downtime. A motion component that performs adequately in intermittent use may degrade rapidly under the cycle counts that semiconductor equipment accumulates. Gilman designs for duty cycle from the start, specifying bearing arrangements, preload levels, and materials that maintain performance across the operational life of the equipment, not just at first installation.
Semiconductor processes are temperature-sensitive by nature, and the equipment that supports them must not be a source of thermal instability. Spindle heat generation, thermal growth in slide systems, and differential expansion between dissimilar materials all affect positioning accuracy in precision equipment. Gilman's thermal analysis capability at the design phase helps semiconductor equipment engineers avoid accuracy degradation from thermal sources.
Semiconductor equipment is not a collection of standalone components. Spindles, slides, positioning stages, and structural assemblies interact within a system that must perform as a unified whole. A motion component that works in isolation but introduces vibration, compliance, or geometric error at the system level fails the application. Gilman approaches semiconductor equipment projects with system-level thinking, not just component-level specification matching.
| Semiconductor Equipment Challenge | Gilman's Engineering Response |
|---|---|
| Sub-micron positioning accuracy required across full travel range | Precision ground slide ways, controlled bearing preload, and runout-verified spindles designed to application accuracy targets |
| Cleanroom or contamination-controlled operating environment | Lubrication selection, sealing configuration, and surface treatment specified for environment; cleanroom-compatible options available |
| Continuous operation across high annual cycle counts | Duty-cycle analysis at design stage; bearing arrangements and preload specified for operational life, not just initial performance |
| Thermal growth affecting accuracy during extended runs | Thermal management considered in design phase; materials and configurations selected to minimize heat generation and differential expansion |
| Tight envelope constraints in compact equipment platforms | Custom housing geometry, flange configuration, and dimensional design to fit the machine's actual spatial constraints |
| Vibration sensitivity in inspection and metrology equipment | Stiffness-optimized designs, damping-appropriate configurations, and precision balancing where spindle rotation is involved |
| Documentation and traceability for capital equipment qualification | Full dimensional records, material certs, and inspection documentation provided as standard deliverables |
| Have a specific challenge in mind? Request a Quote → and Gilman's applications engineers will respond with a technical assessment. |
Gilman's product capability covers the core motion system components required in semiconductor equipment design and manufacturing.
Gilman designs motorized and belt-driven spindles for semiconductor equipment applications where speed accuracy, low runout, and thermal stability are the governing requirements. Application areas include:
Positioning accuracy in semiconductor equipment depends on the slide system as much as the control system driving it. Gilman designs and manufactures precision linear slides for semiconductor equipment applications.
All Gilman slide systems are available with application-specific geometry, travel range, preload configuration, and surface treatment. For semiconductor equipment applications, Gilman engineers specify slide parameters based on the accuracy requirements, load profile, and environmental constraints of the specific equipment platform.
Semiconductor equipment OEMs often need precision machined housings, mounting structures, and assemblies manufactured to exact specifications with full dimensional documentation. Gilman's contract machining capability supports semiconductor equipment manufacturers who need tight-tolerance components and assemblies produced under one quality system.
The CHIPS and Science Act and broader semiconductor reshoring initiatives are driving significant capital investment in domestic semiconductor fabrication capacity. New fab construction and equipment investment in the United States means semiconductor equipment manufacturers are under pressure to qualify domestic component suppliers, reduce supply chain exposure, and demonstrate U.S. content in their equipment platforms.
Gilman Precision is positioned to support this transition. All engineering and manufacturing takes place in Grafton, Wisconsin. No offshore components. No third-party assembly. For semiconductor equipment OEMs evaluating domestic motion component suppliers as part of their reshoring supply chain strategy, Gilman offers the engineering depth, manufacturing capability, and U.S.-based traceability that the current market environment demands.
Gilman's semiconductor equipment capability is oriented toward the engineers and organizations that design and manufacture the capital equipment used in semiconductor production, not the wafer fabs themselves. This includes:
The common thread across all of these customers is a requirement for motion components that perform at a level of precision, repeatability, and reliability that standard industrial catalog products cannot consistently deliver.
Gilman motion components are designed into semiconductor capital equipment across the full range of fab process steps and equipment categories:
Does Gilman have experience with semiconductor equipment applications specifically?
Gilman has engineering experience with the precision motion requirements that semiconductor equipment imposes, including sub-micron accuracy, contamination control, high cycle-count reliability, and thermal stability. Semiconductor equipment OEMs should contact Gilman's applications engineering team to discuss their specific requirements.
What accuracy levels can Gilman achieve in spindle and slide designs for semiconductor equipment?
Accuracy targets vary by product type and application. Gilman's precision slide systems are designed to achieve positioning accuracy and repeatability appropriate for precision instrumentation and capital equipment applications. Spindle radial runout, axial runout, and thermal growth are specified and verified based on the requirements of the specific application. Contact Gilman's engineering team with your accuracy targets for a direct assessment of what is achievable for your specific equipment platform.
Are Gilman motion components compatible with cleanroom environments?
Gilman can design motion components with lubrication selection, surface treatments, and sealing configurations appropriate for controlled environments including cleanroom-adjacent and cleanroom-compatible applications. The specific requirements of your cleanroom classification and any applicable contamination control standards should be shared with Gilman's engineering team at the start of the project so that material and lubrication choices are made correctly from the beginning.
Can Gilman supply precision machined components and assemblies in addition to spindles and slides?
Yes. Gilman's contract machining capability allows semiconductor equipment OEMs to source precision machined housings, mounting structures, and mechanical assemblies from the same Wisconsin facility that produces the spindles and slides. Full dimensional inspection records and material certifications are provided as standard deliverables. This single-source capability simplifies supply chain management and ensures dimensional compatibility across components that must work together.
How does Gilman support semiconductor equipment OEMs who need to demonstrate U.S. content in their equipment?
All Gilman engineering and manufacturing takes place in Grafton, Wisconsin. There are no offshore-sourced components in Gilman's standard production process. Gilman is ISO 9001:2015 certified and can provide the documentation and traceability records that semiconductor equipment OEMs typically need to support their own supplier qualification processes and any domestic content requirements associated with CHIPS Act-related programs.
What is Gilman's typical engagement process for a semiconductor equipment project?
Semiconductor equipment projects typically begin with a technical conversation about the application's accuracy requirements, duty cycle, environmental constraints, and physical envelope. Gilman's applications engineers review the requirements, assess feasibility, and propose a configuration approach before any formal quotation. CAD models and technical drawings are provided early in the design cycle so the equipment design team can proceed with integration. Gilman recommends engaging as early in the equipment design process as possible to ensure the motion system is designed in, not designed around.
Does Gilman support repair and rebuild of precision motion components in fielded semiconductor equipment?
Yes. Gilman's repair and rebuild service supports precision spindles and slides across the equipment lifecycle, including components originally manufactured by other suppliers. For semiconductor equipment in field service, Gilman can evaluate worn or failed motion components, document the condition, and rebuild to original or improved specifications. This lifecycle support capability is valuable for semiconductor equipment OEMs and their end customers who need to maintain capital equipment over multi-year production lifetimes.
Explore other Gilman capabilities relevant to semiconductor equipment design and manufacturing:
| 100% U.S.-Based Engineering and Manufacturing. Grafton, Wisconsin. Gilman Precision, since 1951. |
Semiconductor equipment motion requirements are specific enough that a general product inquiry rarely provides useful answers. Gilman's applications engineering team is available to review your accuracy targets, duty cycle, environmental constraints, and integration requirements, and to provide a technically grounded response on what is achievable and how Gilman would approach the design.
Request a Quote: Share your application specifications. Gilman engineers will review and respond with a technical assessment, not a catalog recommendation.
Download CAD Models: Access 3D models early in the design cycle at gilmanprecision.com/download-gilman-assets.
Talk to an Engineer: Call 262-377-2434. Ask for applications engineering. The conversation will be technical from the first exchange.
Built in Wisconsin. Engineered for the precision demands of semiconductor equipment manufacturing. Gilman Precision, since 1951.
