Polyamide Balls (Nylon) for Valves, Instruments and Light-Duty Bearings
REDHILL supplies polyamide balls in PA6, PA66, PA610, PA11 and PA12. These nylon grades combine low weight with wear resistance and noise damping. As a result, they suit valves, instruments and lightly loaded mechanisms.
Key Technical Specifications
The values below provide a material guide. However, the grade, moisture content and additives affect the final properties.
- Material Options: Unfilled or glass-filled grades, as specified.
- Structure: Semi-crystalline thermoplastic.
- Hardness: Approximately 75–82 Shore D for selected unfilled grades.
- Density: Approximately 1.01–1.15 g/cm³ for unfilled grades.
- Temperature Limits: Depend on the grade, load and exposure time.
- Electrical and Magnetic Properties: Unfilled grades provide electrical insulation and show no magnetic response.
Choosing the Polyamide Grade
PA6 and PA66 offer strength and wear resistance for general mechanical use. However, they absorb moisture, which can change ball size and stiffness.
PA610, PA11 and PA12 generally absorb less moisture than PA6 and PA66. Therefore, they can offer better dimensional stability as humidity changes.
In addition, glass fibers can increase stiffness and density. Filled grades require their own material data and tolerances.
Applications of Polyamide Balls
- Light-Duty Bearings: Rolling elements for low-load mechanisms.
- Valves and Pumps: Check balls and sealing elements.
- Flow Meters and Instruments: Low-mass moving parts.
- Medical and Electronic Devices: Selected grades for valve and switch components.
Also, check chemical compatibility with the fluid and working temperature. Dry running depends on the material, load, speed and contact surface.
Available Grades and Sizes
- Precision Classes: GI, GII and GIII, subject to the agreed tolerance specification.
- Diameter Range: 1/16 in–4 in, approximately 1.59 mm–101.6 mm.
Availability depends on the material, diameter and precision class. Finally, send us your nylon grade, size, quantity and working conditions so we can confirm suitable options and lead time.