Grinding & Finishing
Our grinding and finishing operations are critical to delivering components that meet the highest standards of performance, cleanliness, and consistency for medical applications.
Grinding & Finishing for Medical-Grade Performance
- Grinding Capabilities
- We offer precision grinding methods tailored to specific part geometries and functional requirements:
- Square end grinding for coil pipes and compression springs to ensure parallel load-bearing surfaces and reliable seating
- Multi-faceted grinding for tissue anchors and helix components, where precise engagement and repeatability are key
- Consistent control of grind profiles and surface finishes across high-volume production
- We offer precision grinding methods tailored to specific part geometries and functional requirements:
- Centerless Grinding
- Centerless grinding is a high-precision process used to achieve exceptional diameter control, surface finish, and geometric consistency—especially critical in the production of medical wire and tubing components. At Motion Dynamics, we apply this capability to condition raw material, refine component geometry, and support tight-tolerance assemblies where repeatability and surface integrity matter.
- Finishing Capabilities
- Our in-house finishing systems combine mechanical and chemical methods to optimize surface integrity, remove contaminants, and support downstream assembly:
- Vibratory finishing for uniform edge blending and surface smoothing
- Chemical etching for selective removal of Nitinol oxide layers without compromising geometry
- Pickling to clean and passivate stainless and specialty alloys
- Citric and nitric passivation, fully compliant with ASTM A967, to enhance corrosion resistance and ensure biocompatibility
- Electropolishing to improve cleanliness, corrosion performance, and cosmetic finish
- Cold water deburring for delicate parts requiring non-abrasive surface refinement
- Our in-house finishing systems combine mechanical and chemical methods to optimize surface integrity, remove contaminants, and support downstream assembly:
Specifications
- Processes: Centerless grinding, end grinding, surface finishing
- Diameter Control: Tight OD tolerances on fine wire
- Surface Finish: Controlled Ra finishes available
- Applications: Coil ends, catheter transitions, precision features
- Materials: Stainless, Nitinol, titanium, specialty alloys
- Integration: Often paired with forming and assembly
Frequently Asked Questions
What types of grinding do you offer?
We offer centerless grinding, end grinding, and application-specific finishing operations.
How tight can you hold diameter tolerances?
Very tight OD control is achievable, depending on material and geometry.
Do you support cosmetic finishes?
Yes. Surface finish can be controlled for both functional and cosmetic requirements.
What are common applications?
Common applications for grinding and finishing include coil end finishing, catheter transitions, and precision dimensional control.
Is grinding integrated into your production flow?
Yes. Grinding is often part of a larger, multi-step manufacturing process.
Related Applications
Micro Wire Components
Precision-formed micro coils and wire components engineered for tight tolerances, repeatable performance, and scalable production.
Nitinol Components
Shape-set and superelastic Nitinol components designed for dynamic applications requiring flexibility, recovery, and fatigue resistance.
Micro Springs
High-precision micro springs engineered for controlled force output, compact integration, and long-cycle reliability.
Wire Forms
Complex precision wire forms manufactured to exact geometries for structural performance and repeatable assembly.
Windings
Advanced micro windings and coils optimized for torque transfer, reinforcement, and structural stability.
Guidewires
Precision guidewires engineered for responsive torque control, flexibility, and reliable navigation performance.
Pull Wires
Precision pull wires and welded pull wire assemblies are engineered for reliable deflection, articulation, and responsive control in steerable catheters, endoscopes, and other minimally invasive devices.
Related Industries
We serve a range of advanced industries where precision, performance, and reliability are non-negotiable—from medical and aerospace to automotive, electronics, and beyond.
Cardiovascular
Our micron-level precision manufacturing meets the mission-critical demands of micro-components used in cardiovascular devices.
Neurovascular
Neurovascular and neuromodulation devices push wire components to their smallest practical scale—and that’s where Motion Dynamics shines.
Orthopedics
Motion Dynamics brings forming, machining, and grinding together in one place to meet the performance demands of orthopedic components.
Endoscopy
Wherever a precision wire part is critical to function (endoscopy, robotics, drug delivery, airway, diagnostics devices), we deliver.
Aerospace
We supply precision wire components and assemblies for aerospace applications that demand extreme reliability, tight tolerances, and full documentation control.
Automotive
We manufacture precision wire components for automotive applications requiring reliability, repeatability, and high-volume scalability.
Electronics
We manufacture micro springs, contact springs, and fine-wire components for connectors, interconnects, test sockets, and sensors, where mechanical and electrical consistency at micro scale is critical.
PARTNER WITH US
Let’s build what others can’t.
Whether you’re developing a breakthrough device or scaling a complex assembly, Motion Dynamics has the expertise to help you get it done right. Explore how our engineering team can support your next precision build.