A wear strip, sometimes referred to as a wear bar or wear plate, is a component used in various machinery and equipment to reduce friction, prevent damage, and extend the life of the machinery and components. It's typically made from a durable material like plastic or metal, and is placed in areas that experience frequent contact, rubbing, or abrasion. For example, roller chain in long lengths or section are supported by a Polystone Ultra Wear Strip to prevent the chain rubbing and damaging other equipment, as well as extending the life of the chain.
Dotmar has qualified engineers that can provide direct support with plastic wear strip designs, including conducting calculations.
.bmp)
%20-%20non-depp.jpg)
Flat Wear Strips
A simple wear strip acting as a low friction, good sliding interface that improves operation and minimises damage of product and surfaces.
Chain Guides
Specifically designed guide wear strips that guide and retain roller chain and link chain
Conveyor Chain Wear Strips
Made in both extruded and machined profile for conveying systems often used in the Food and Beverage industris.
Conveyor Impact Bars
Used in the mining and resource sectors, these wear strips protect over land conveyor belts in impact and loading zones.
Conveyor Chain Curves
Specially designed tracks, used mainly in the food, beverage and packaging sectors, to guide/track conveyor chain.
Extruded Profile
Manufactured in long lengths (10-30m) designed to be used as a clip on profile onto steel sections, such as flat bar, round bar etc
Wear Strips are manufactured predominantly in UHMWPE (Polystone 7000, Polystone AST & Polystone Ultra), but in some cases due to very high loads, speeds or temperatures where UHMWPE is not suitable, other materials such as Sustamid or Ticomp S may be better suited.
Load
The surface pressure (load / contact area) is critical in selecting a suitable material. Generally Polystone Ultra, Polystone 7000 or Polystone 7000 AST are the most material choices, with a surface pressure load capacity of 5-10 MPa.
Temperature
The surrounding temperature (opposed to heat generated from friction) for both short- and long-term exposure is important, as materials can withstand higher temperatures for short term periods compared to long term or constant exposure, which in turn affect their load carrying capacity.
Lubrication
Generally plastic wear strips are used to eliminate lubrication, but if the speeds are extreme, lubricants can help to improve operation and service life.
Friction
Generally, most plastics offer a suitably low enough friction level for most applications, but for longer wear strips where the forces to drive a system may be influenced by the frictional drag, this may need to be considered.
Regulatory Requirements
Does the application have regulatory requirements such as food contact, drinking water, anti-static or flame retardant. The food industry may also require materials to be metal detectable, x-ray detectable and/or visually detectable by being coloured blue.
Other considerations
At times there may be other considerations such as chemical resistance and dimensional stability. Apart from material selection, dimensional stability can also be addressed via appropriate design of the wear strip.
To receive latest news and promotions