Main Products: steel ball for bearing ,stainless steel ball ,ceramic ball ,abrasive ,bearing
2016 new products POM plastic balls
Negotiable /Ton
Min.Order:1 Ton
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Business Type: Trading Company
Zibo Shandong ChinaMain Products: steel ball for bearing ,stainless steel ball ,ceramic ball ,abrasive ,bearingProduct Details
We are manufacturer of bearing balls from Shandong, China. Our main products include stainless steel ball, chrome steel ball, carbon steel ball, plastic ball, glass ball, and ceramic ball etc.
2016 new products POM plastic balls
Excellent mechanical and chemical resistance
Good elecrical properties
High quality, different size and competitive price
OEM is accpetable
Plastic Ball(POM)
| Material |
Polyacetal
|
| Grade |
G0-G3
|
Size |
1mm-50.8mm
|
| Density |
1.4-1.6g/cm³
|
| Feature |
Aceral resin with excellent mechanical, chemical resistance and good electrical properties. it is similar to nylon but slightly harder and denser. Recommended for applications where these properties and low water absorption are required.
|
| Application |
balls made of this material are often used for sliding fittings of tables and drawers, bearings, rollers, valves and electronic components, sailing apparatus.
|
Application Grade and Tolerance
| Grade | Diameter Tolerance | Roundness Tolerance | Diameter Tolerance | Roundness Tolerance |
| unit | inch | inch | mm | mm |
| 0 | +/-0.0005 | 0.0005 | +/-0.0127 | 0.0063 |
| 1 | +/-0.001 | 0.0005 | +/-0.0254 | 0.0127 |
| 2 | +/-0.002 | 0.001 | +/-0.05 | 0.025 |
| 3 | +/-0.005 | 0.005 | +/-0.127 | 0.127 |
Material and Characteristics
| Item | POM | PA66 | PP | Delrin AE |
| Material | Polyacetal | Nylon 66 | Polypropylene | 20% Teflon + 80% Delrin |
| Density(g/cm³) | 1.42 | 1.14 | 0.91 | 1.5 |
| Hardness | 120 | 110 | 90 | 115 |
| (Rockwell R scale) | ||||
| Wear resistant | 0.37 | 0.18 | 385-560 | 0.19 |
| (kgf/cm²) | ||||
| Wear Absorption(%) | 0.22-0.25 | 8.4 | 0.03 | 0.2 |
| Heat Resistance(℃) | 160-170 | 180-230 | 120 | 340 |
| Resistance to weak acid | good | fair | excellent | good |
| Resistance to strong acid | poor | poor | fair | fair |
| Resistance to weak alkali | good | excellent | excellent | good |
| Resistance to strong alkali | good | good | good | good |
| Resistance to organic solution | good | good | good | good |
| Feature | High strength and stiffness, enhanced dimensional stability and is easy to machine | Excellent wear resistance, good tensile strength; high durability | Light weight, good dielectric, good tensile strength. Color easily, Matte surface finish | Good wear, heat resistance; good corrosion resistance, Dark brown color |
Each type ball has its special production process. However, the production process can be generalized as following:
Quality Control
Packing
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