Precision Injection Molding for complex parts with consistent quality

Kleiss Gears is a US-based manufacturing partner delivering consistent quality and immediate capacity for complex parts.
  • ISO 9001:2015 Certified
  • 24/5 Production
  • Fast Program Qualification
Let's discuss your project needs

Manufacturing leaders face increasing pressure:

  • • Supply chain uncertainty threatens production
  • • Quality issues from existing suppliers
  • • Complex qualification timelines
  • • Capacity constraints limiting growth
Sound familiar? We can help.

Quality Manufacturing When You Need It Most

When quality issues or capacity constraints threaten production, you need a proven manufacturing partner. Our Wisconsin facility delivers precision injection molding with comprehensive quality systems and rapid qualification.

Immediate Manufacturing Solutions

  • Existing tool transfer expertise
  • In-house parts inspection capabilities
  • The fully equipped in-house tooling department
  • Automated production cells

Proven Quality Excellence

  • ISO 9001:2015 Certified
  • Advanced CMM (Coordinate Measuring Machine) capabilities
  • Full material traceability

Complex Part Expertise

  • Precision tolerances
  • Engineered materials including high-performance polymers: PEEK (Polyetheretherketone), PPL (Polypropylene), PEI (Polyetherimide)
  • Advanced gear manufacturing
Quality Manufacturing When You Need It Most
Industries

Beyond Just Gears: Your Full-Service Manufacturing Partner

Industrial Equipment

Industrial Equipment

A global leader providing specialized polymer solutions for component design engineers and OEMs across diverse manufacturing sectors. Our application-specific expertise helps shape performance and innovation in four key industrial markets, empowering engineers to overcome complex design challenges with advanced materials technology.
Medical Devices

Medical Devices

If you need precision molded component parts then we can also handle your requirements for medical, pharmaceutical and drug delivery. Example parts could be plungers and gears for injection devices, dosing chambers for inhalers, or nozzles for aseptic filling lines. We can process a range of polymer materials depending upon your needs. These include the high performance polymers, like PEEK and also the specific pharmaceutical contact PEEK grade (VICTREX PC) that comes pre-certified with industry relevant testing (USP Class VI, USP 87, USP661.1)
Automotive & Gears

Automotive & Gears

Across all industry sectors, there's a growing demand for cost-effective, high-performing, high-precision gears that operate quietly and reliably—even in the most challenging environments. Our advanced polymer solutions—including our specialized High-Performance Gear product family—have emerged as compelling alternatives to traditional metal components that no longer satisfy evolving customer requirements.
How it works
How it works

Transform Your Manufacturing

Stop choosing between quality, speed, and reliability.

Our proven systems deliver:

  • 24/5 production schedule
  • Clear capacity communication

Let's discuss your project needs
Capabilities

Manufacturing Excellence: Why Choose Kleiss

When production quality and timeline certainty matter, manufacturers trust our Wisconsin facility to deliver. We combine rapid program qualification with comprehensive quality systems to get your parts into production fast.

Fast Program Qualification & Capacity

  • Established transfer protocols
  • In-house parts inspection
  • Immediate capacity availability
  • 100+ successful program transfers

Advanced Manufacturing Systems

  • Advanced production cells
  • Automated material handling
  • Process monitoring systems
  • Part sizes: 1cm³ to 22cm³
  • PEEK (Polyetheretherketone), PPS (Polyphenylene Sulfide), PPA (Polyphthalamide) processing expertise

Comprehensive Quality Systems

  • ISO 9001:2015 certified
  • Keyence, CMM (Coordinate Measuring Machine), Frenco measurement systems
  • Statistical process control
  • Tolerances to ±0.001

Proven Performance

  • 98% first article acceptance rate
  • 99.7% on-time delivery
  • Complete quality documentation
  • Local technical support
  • Simplified US supply chain
Manufacturing Excellence: Why Choose Kleiss

Advanced Materials Manufacturing

When demanding applications require high-performance materials, our validated processes deliver consistent quality from prototype to production.

Material Processing Excellence

  • Material-specific validation protocols
  • Full lot traceability and certification

Material Capabilities

  • High performance polymers processing optimization
  • High-performance engineering polymers: PEEK (Polyetheretherketone), PEI (Polyetherimide), POM (Polyoxymethylene), PPA (Polyphthalamide), PPL (Polypropylene), PPS (Polyphenylene Sulfide)
  • Temperature-resistant materials
  • Precision molding: 1cm³ to 22cm³ parts
  • Custom material formulation support

Process Validation

  • Material-specific parameter optimization
  • Statistical process monitoring

FAQs

Find answers to your most pressing questions and learn more about our services.
What types of plastic components do you manufacture?
We specialize in custom injection-molded components made from high-performance materials such as PEEK (Polyetheretherketone), Nylon, PPS (Polyphenylene Sulfide), and POM (Polyoxymethylene).
What industries do you serve?
Our expertise covers various industries, including automotive, aerospace, industrial, medical, consumer electronics, and agriculture.
How does Kleiss Gears ensure consistent quality in its components?
Kleiss Gears maintains exceptional quality standards through ISO 9001:2015 certification. Our processes leverage AIAG (Automotive Industry Action Group) core tools, including control charts, to ensure precision and consistency throughout production.
What are your production capabilities?
We offer micro-molded parts as well as components up to 7 inches in diameter, with a wide range of sizes and tolerances to fit your project needs.
Can you handle large production volumes?
Yes, our 14 injection molding machines operate 24/5, ensuring we can meet high-volume production demands while maintaining quality.
How can I get a quote or start a project?
You can contact us through our website or call us directly to schedule a formal introduction and discuss your project needs.

Let’s Discuss Your Project Needs

Ready to discuss your manufacturing needs? Our team of experts is here to help you evaluate production options and develop a solution tailored to your requirements.

Office

Kleiss Gears, Inc.
390 Industrial Avenue
Grantsburg, WI 54840

Phone

General Inquiries & Sales:
(715) 598-4486