Agricultural industrial polyurethane screening process High mechanical strength star wheel

Polyurethane Star Wheels can also be called harvesting wheels, separator wheels, de-stoning wheels.

As the name suggests they are similar in appearance to a star, and have a central body, with multiple 'fingers' extending out.  They can be used in multiple industries, typically they are used as part of the screening process.  The most common industries you find them are; mining and aggregate sorting, recycling, agriculture and forestry.

Typically they are used in the screening process, and can be used to sort pieces by size (as in mining and quarrying), or to remove waste such as when grading soil.  For use in the harvesting process, they are used to separate the produce (e.g. potatoes or other root vegetables) from dirt and stones, whilst limiting any damage to the produce.

We have a good history of working with those in the industry to develop stars for specific purposes, and we have been able to improve productivity of existing styles significantly.   star wheel

Through this process your components could attain greater performance in:

These improvements can offer you:   star wheel

 1) Competitive Prices

• Our key strength is its ability to manufacture products based on optimal economies of scale, offering you the most competitive prices in the market.

• With our own one stop service engineering design, tooling and fabrication abilities we manufacture a wide range of high quality products including tooling and pre -production prototyping. Our one stop services allow us to keep costs to a minimum and give us the freedom to customise our products to your needs.

2)Customised Products

We can produce any polyurethane moulding that you may require and if something you are looking for is not on this or our other product and industries pages, please contact us.

What is Polyurethane?
Polyurethanes are a general term that is used for a wide range of polymers but they are specifically high molecular weight polymers which are based on Isocyanate chemistry. All Urethanes are produced with a reaction between 3 components:

• A Polyol (PPG, PTMEG and Polyester)
• An Isocyanate (TDI, MDI, NDI)
• A cross-linker / Chain extender (Diamine, Diol and Triols)

In General the Polyol and Isocyanate parts are preblended liquids called Pre-polymers. This is then hand or machine blended with the cross linker, poured into a mould and cured to produce the end component.

There are many different families of polyurethanes, for example; Castable Elastomers, Rigid and Flexible foam, Adhesives, Sealants & Coatings.

Handles Urethane Products specialise in manufacturing castable Polyurethane products, which are true engineering materials. Castable Polyurethanes are true elastomers, the definition of which is a material that can be extended to at least twice its length and then return to its original form.

Why Polyurethanes? 
The major characteristic of these Polyurethanes are their extraordinary physical properties and the variety of strengths that are available between the different families of urethanes. There are two main reasons for using polyurethanes; their physical performance and their cost effectiveness. Below is a chart detailing the advantages of using Urethanes over other materials.   star wheel

Polyurethanes advantages over other materials

ChengDu Handles industrial Co., Ltd have supplied industry standard and custom polyurethane components to the automotive industry for over 10 years using Engineering grade cast-able polyurethane materials. In collaboration with our customers, we also develop new and better solutions through part design and our extensive knowledge of polyurethane chemistry, which means we can tailor suit polyurethane mouldings to your specific requirements.