At Kremin Inc., precision isn’t just a capability—it’s a commitment. With decades of experience in CNC machining across demanding industries, we’ve developed a deep understanding of how mission-critical parts can impact lives. Nowhere is that impact more profound than in the medical device industry. From life-saving implants to precision diagnostic tools, CNC machining is the silent powerhouse behind many of the technologies that doctors, surgeons, and patients rely on daily.
What is CNC Machining?
CNC (Computer Numerical Control) machining is a subtractive manufacturing process that uses computer-guided tools to remove material from a workpiece and form a finished part. The process is known for its precision, repeatability, and ability to handle complex geometries. CNC machining includes a variety of techniques such as turning, milling, drilling, and EDM (Electrical Discharge Machining), often performed on high-grade metals and polymers.
For the medical device industry, where parts must often meet tolerances within ±0.0002 inches, CNC machining is not just an option—it’s a necessity.
Why CNC Machining is Vital to the Medical Industry
1. Uncompromising Precision
Medical devices, whether implants or diagnostic components, need to be manufactured to incredibly tight tolerances. A small error in a surgical tool or implant can lead to device failure, costly recalls, or worse—harm to a patient.
At Kremin, our Swiss-style CNC lathes and 5-axis machining centers are equipped to meet these stringent requirements. Whether we’re producing titanium bone screws or intricate valve components for IV infusion pumps, we know there is no margin for error. CNC machining allows us to consistently manufacture parts with microscopic precision, batch after batch.
2. Material Versatility
Medical components are made from a wide variety of materials, including:
- Titanium – for implants due to its strength, biocompatibility, and resistance to corrosion.
- Stainless Steel (316L, 17-4) – for surgical tools and structural parts.
- PEEK and other medical-grade plastics – used in spinal cages, dental components, and housings for electronic diagnostic devices.
- Aluminum – for lightweight diagnostic equipment components.
CNC machines can process all of these materials efficiently. At Kremin, we’ve invested in tooling, fixturing, and machining strategies to optimize results for even the most difficult-to-machine materials, ensuring clean finishes and reliable structural performance.
3. Complex Geometries and Miniaturization
The demand for smaller, more complex medical devices has exploded in recent years. With the rise of minimally invasive surgery and implantable electronics, components are being pushed to new extremes of miniaturization, driving new advancements in medical device manufacturing.
CNC machining enables us to craft parts with intricate internal and external features that would be nearly impossible to achieve with conventional machining. We routinely machine parts with diameters under 1/8″ that include multiple milled flats, micro-holes, and fine threads—operations that require stable, high-precision platforms and experienced machinists.
Swiss CNC lathes are especially well-suited for these types of components. At Kremin, our Citizen and Star Swiss machines can turn and mill parts simultaneously, reducing cycle times and improving part integrity.
4. Repeatability and Compliance
The medical industry is heavily regulated by agencies like the FDA and ISO. Traceability, repeatability, and documentation are all non-negotiable requirements. CNC machining provides a consistent, repeatable process that can be validated, qualified, and documented—essentials for any component used in patient-facing applications.
At Kremin Inc., we are ISO 13485:2016 certified, meaning our quality management system is specifically designed for medical device manufacturing and medical equipment manufacturing. Every part that leaves our facility is backed by robust inspection data, full material traceability, and a rigorous quality assurance process that ensures compliance with customer specs and regulatory standards.
5. Prototyping to Production Scalability
One of the greatest strengths of CNC machining is its flexibility. Whether you need a few prototypes or 100,000 production parts, CNC technology can scale with you.
Early in the product development process, engineers and designers often need prototypes to test form, fit, and function. CNC machining offers a fast, cost-effective solution to create prototypes using actual production-grade materials. At Kremin, we’ve helped numerous medical device companies iterate designs quickly while maintaining the same quality standards used in production.
When it’s time to scale, our production lines—including multi-axis mills and high-throughput Swiss machines—can handle manufacturing for medical devices and complex production runs without compromising quality or lead time.
6. Improved Lead Times and Responsiveness
Speed to market is a critical competitive factor in the medical device space. OEMs must be able to launch new products quickly to meet regulatory timelines, respond to emerging health trends, and gain market share.
Our vertically integrated CNC capabilities at Kremin give us the agility to respond quickly to customer needs. From rapid prototyping to Just-In-Time (JIT) delivery programs, our operations are built around speed and flexibility. And because we do everything in-house—from machining to cleaning, assembly, and packaging—we have full control over timelines and quality checkpoints.
Real-World Applications of CNC Machining in the Medical Sector
To better illustrate the impact of CNC machining, here are some common medical components we manufacture at Kremin:
- Orthopedic Implants – Bone screws, spinal implants, and fixation devices made from titanium and PEEK.
- Surgical Instruments – Forceps, drill guides, reamers, and scalpel handles machined from stainless steel.
- Catheter Components – Ultra-small valves and connectors turned with micron-level precision.
- Diagnostic Equipment Parts – Aluminum housings, mounting brackets, and plastic enclosures used in imaging and lab instruments.
- Dental Devices – Posts, abutments, and crowns made from hard metals and ceramics using multi-axis milling.
Each of these components must meet exact specifications to function reliably in critical, high-stakes environments.
Challenges and Our Solutions
CNC machining in the medical device industry is not without its challenges. Here’s how we meet them:
Challenge 1: Maintaining Cleanliness and Sterility Standards
Solution: We maintain clean machining practices, use ultrasonic parts cleaning, and package components in clean environments to prevent contamination.
Challenge 2: Demanding Tolerances on Tiny Features
Solution: We invest in metrology tools such as CMMs, vision systems, and laser micrometers that allow us to inspect the tiniest features with confidence.
Challenge 3: Ever-Changing Regulatory Landscape
Solution: Our internal QA team is trained to stay current with ISO 13485 and FDA regulations, and we audit our systems regularly to remain compliant.
Looking Ahead
As medical technology continues to evolve—think smart implants, robotic-assisted surgeries, and microfluidic diagnostic devices—so too will the demand for advanced machining capabilities.
At Kremin Inc., we’re committed to staying ahead of the curve. From investing in the latest CNC technologies to training our machinists in emerging techniques, we’re constantly upgrading our capabilities to meet the next generation of medical device challenges.
Why Partner with Kremin Inc.?
There are plenty of machine shops out there, but few offer the depth of experience, specialized certifications, and medical manufacturing capabilities that we do. When you partner with Kremin Inc., you’re not just getting a parts supplier—you’re gaining a manufacturing ally dedicated to your product’s success.
We understand that when we machine a medical component, it could one day help save a life, restore mobility, or deliver a life-changing diagnosis. That responsibility is at the heart of everything we do.
Ready to Discuss Your Next Medical Project?
If you’re developing a new medical device or looking to scale your production with a reliable, ISO 13485-certified partner, contact Kremin Inc. today. Let’s build something that matters—together.About Kremin Inc.
Kremin Inc. is a Michigan-based precision machining company specializing in high-complexity parts for the medical, defense, aerospace, and energy industries. Our team of experienced machinists, engineers, and quality professionals is equipped to handle your most challenging projects—from prototype through production.