Precision Machining
High Tolerance Precision Machining at Gerhard Designing & Manufacturing, Inc.
Gerhard Designing & Manufacturing, Inc. stands at the forefront of precision machining, delivering high-tolerance components to industries where quality and accuracy are non-negotiable. With nearly 50 years of continuous operation, we have earned a reputation for manufacturing parts that many other shops cannot, thanks to our unique blend of engineering expertise, skilled operators, and advanced equipment. Our capabilities span projects from 1 pound to 1 ton, always underpinned by strict quality control standards to ensure every part meets exact specifications.
Defining High-Tolerance Precision Machining
Precision machining with high tolerance refers to the process of manufacturing components with extremely tight dimensional allowances-often measured in thousandths of an inch or hundredths of a millimeter. In this context, “tolerance” is the permissible limit of variation in a physical dimension. The tighter the tolerance, the closer the finished part will be to its specified dimensions, ensuring optimal fit, function, and performance.
Standard machining tolerances for metal parts are typically ±0.005″ (0.13 mm), but high-tolerance work can achieve tolerances as tight as ±0.001″ or even ±0.0002″ for critical applications. Achieving such precision requires not only advanced machinery and tooling but also a deep understanding of materials, processes, and quality assurance protocols.

Our Approach to High-Tolerance Machining
At Gerhard Designing & Manufacturing, Inc., our approach to high-tolerance machining is built on several key pillars:
- Advanced Equipment: We invest in state-of-the-art CNC machines, metrology tools, and software to ensure consistent, repeatable accuracy. Our technology allows us to process a diverse range of materials and part sizes while maintaining the highest standards of precision.
- Expert Team: Our inspectors and machinists possess decades of experience in high-tolerance manufacturing. Their expertise enables us to tackle complex geometries, challenging materials, and demanding specifications that other shops may find prohibitive.
- Comprehensive Quality Control: Every part undergoes rigorous inspection at multiple stages, including raw material verification, in-process checks, and final dimensional analysis. We utilize coordinate measuring machines (CMMs), statistical process control (SPC), and first article inspections (FAI) to guarantee compliance with customer and industry standards.
- Custom Solutions: We understand that tolerances are not one-size-fits-all. Our team works closely with clients to determine the optimal tolerance for each feature, balancing performance requirements with cost-effectiveness.
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Temperature Controlled Machining is vital for precision because thermal fluctuations cause material expansion or contraction, leading to dimensional errors. Maintaining stable temperatures ensures tight tolerances, consistent quality, and repeatability, which are crucial for high-precision manufacturing and reducing waste.
- Temperature Controlled Inspection allows us to ensure that the parts created meet specifications and tolerances.
Industry Standards and Regulatory Compliance
We adhere to recognized industry standards for quality management and machining tolerances. These standards guide our processes for:
- Linear and angular dimensions
- Straightness, flatness, and perpendicularity
- Roundness and symmetry
We also factor in the impact of secondary processes such as plating and finishing, which can alter final part dimensions. By including these considerations in our planning, we ensure that finished components meet all specified requirements.

Applications and Industries Served
Our high-tolerance machining services are trusted by clients in a wide range of industries, including:
- Food Services: Where even the smallest deviation can impact packaging performance.
- Gas & Oil: Demanding absolute precision for safety and compliance.
- Beverage and Packaging: Where high-speed automation and repeatability are essential
No matter the application, Gerhard Designing & Manufacturing, Inc. delivers components that meet the most stringent tolerances and quality expectations.
Key Considerations in High-Tolerance Machining
1. Material Selection and Machinability
Different materials respond uniquely to machining processes. Harder or more brittle materials may require specialized tooling or slower feed rates to achieve tight tolerances. Our team will assess each project to select the most suitable approach, ensuring optimal results without unnecessary cost.
2. Feature Prioritization
Not all features require the same level of precision. We focus tight tolerances on critical features-such as those affecting assembly, function, or load-bearing capacity-while relaxing tolerances on non-essential or cosmetic features to optimize cost and efficiency.
3. Process Optimization
We leverage advanced CAD/CAM software to optimize tool paths and minimize errors. Our in-process inspections catch deviations early, reducing scrap and rework while maintaining high throughput.
4. Cost-Benefit Analysis
Tighter tolerances generally increase machining time and cost. Our team works with clients to determine where high precision is essential and where standard tolerances are sufficient, ensuring the best value for every project.
Quality Assurance: From Raw Material to Final Inspection
Our quality control process is comprehensive and methodical:
- Raw Material Inspection: Every batch is checked for conformity to specifications before machining begins.
- First Article Inspection: The first part off the line is thoroughly inspected to verify all dimensions and features meet requirements.
- In-Process Inspection: Continuous monitoring during production ensures consistency and immediate correction of any deviations.
- Final Temperature Controlled Inspection: Each finished part is measured against client specifications in our temperature controlled inspection lab using calibrated instruments and CMMs before leaving our facility.


Why Choose Gerhard Designing & Manufacturing, Inc.?
- Proven Track Record: Nearly 50 years of delivering precision components for demanding industries
- Unmatched Capability: From prototypes to production runs, 1 lb. to 1 ton, we handle it all
- Quality First: Every part is inspected and verified before shipment
- Collaborative Service: Our machining and inspection staff partner with you to solve challenges and deliver optimal solutions
Partner With Gerhard Designing & Manufacturing, Inc.
Call 708|599.4664 to get started or learn more about us
We are committed to providing the precision components your project requires. Whether you need precision assemblies, intricate parts, or large-scale manufacturing solutions, we have the experience, expert capabilities, and technology to meet your needs. Contact us today to discuss how we can help bring your next project to life with the precision you demand.