Main Products: steel ball for bearing ,stainless steel ball ,ceramic ball ,abrasive ,bearing
G0-G3 PP plastic balls for ball bearings 50.8mm
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.
G0-G3 PP plastic balls for ball bearings 50.8mm 
Specification
excellent chemical resistance and low specific weight(less than water)
the highest melting point of thermoplastics
High quality, different size and competitive price
OEM is accpetable
Plastic Ball(PP)
| Material |
Polypropylene
|
| Grade |
G0-G3
|
Size |
1mm-50.8mm
|
| Density |
0.85-0.92 g/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 |
PP ball is used for transfusion, level calibration indicator mainly
|
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
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