What is centerless grinding?
Centerless grinding is a precision machining process used to reduce the outer diameter (OD) of tubing. Material is removed using a high-speed grinding wheel while a regulating wheel controls rotation and feed rate, allowing for continuous, highly controlled processing.
This process is especially valuable for medical tubing, where dimensional accuracy, roundness, and surface quality directly impact device performance.
Why is centerless grinding ideal for medical tubing?
For catheter shafts, multi-lumen tubing, and minimally invasive device components, even micron-level variations can affect deliverability, flexibility, and overall device success.
Centerless grinding enables:
- Ultra-tight OD tolerances beyond what extrusion alone can achieve
- Improved roundness for consistent performance
- Smooth, no braid texture surfaces that reduce friction and enhance device interaction
- Superior Surface Finish that produces polished, defect-free surfaces that support coating adhesion, assembly integrity, and in-body performance
- Reduction in process compared to reflow operation
What applications are centerless grinding commonly used in?
From early-stage development to full-scale production, Putnam Plastics provides the expertise and integrated capabilities needed to bring complex medical device designs to life.
Why partner with Putnam Plastics?
From early-stage development to full-scale production, Putnam Plastics provides the expertise and integrated capabilities needed to bring complex medical device designs to life.
Contact our team to learn how centerless grinding can enhance your design and performance.
