Home > News > Content

UHMWPE Star Wheel Gear

Apr 28, 2019

UHMWPE Star Wheel Gear has excellent wear resistance, good low temperature impact resistance, self-lubricating, non-toxic, water and chemical resistance. It has outstanding impact resistance, stress crack resistance, high temperature creep resistance, low friction coefficient, self-lubricating property, excellent chemical resistance, fatigue resistance, noise damping, and excellent performance. The use temperature is 70 to 110. Good cold resistance, can be used at -269. The product with a density of 0.985g/cm3 and a molecular weight of 4 million has a tensile strength at break of 50 MPa, an elongation at break of 400%, a flexural modulus of 600 MPa, and a cantilever beam notched impact. The amount of wear (MPC method) is 20 mm.


The service life is longer than that of steel, and the wear resistance is 3-7 times better than carbon steel and stainless steel.

1, Extreme high wear resistance

The unique molecular structure of UHMW-PE products gives it a detached resistance to sliding friction. The wear resistance is higher than that of ordinary metal and plastic products, which is 6.6 times of carbon steel, 5.5 times of stainless steel, 27.3 times of brass, 17.9 times of phenolic resin, 5 times of nylon and 5 times of polytetrafluoroethylene.

2, Excellent impact resistance

In the existing engineering plastics, the impact toughness value of this product is high. Many materials will crack, break, break or surface fatigue in severe or repeated impact. This product is tested according to GB1843 standard for cantilever beam impact test without damage.

3, Good chemical resistance

This product can withstand the corrosion of strong chemicals, except for a slight corrosion of some strong acid at high temperature, in other lye, acid solution, it can be used in concentrated <80 °C concentration; at concentration <75 Among the %, the performance of nitric acid with a concentration of <20% is stable, and the performance of sea water and liquid detergent is also stable.

4, Very low friction coefficient

Due to the waxy nature of this product, the friction coefficient (196N, 2 hours) is only 0.219MN/m. Its own lubricity is very good, its sliding performance is better than oil-lubricated steel and brass; especially in harsh environment. In places with a lot of dust and sand, the dry lubrication performance of this product is more fully displayed, not only can it move freely, but also protects related work from being worn or strained.

5, Surface non-adhesive

This product has good surface non-adhesion due to its low friction coefficient and non-polarity. Existing materials generally scale in media with a pH of 9 or higher, and the product does not scale. This feature is of great significance for the use of thermal power stations for coal discharge ash systems.


UHMWPE combines the superior properties of all plastics. Its five characteristics of impact resistance, wear resistance, chemical resistance, self-lubrication and impact energy are the high values of the existing plastics. Performance has received widespread attention in European and American countries.

1, UHMWP Gear, Worm Gear

Ultra-high molecular weight polyethylene as a gear, the worm wheel has the advantages of light weight, fatigue resistance, shock absorption and good self-lubricating performance. For parts that are afraid of lubricant contamination or can not add lubricant frequently, and do not hurt the corresponding gears or connectors, the noise is small, and the effect is remarkable in various industrial applications such as textile, paper making, printing, food machinery, etc. The noise is only steel. 1/4 to 1/2 of the piece.

2, UHMWP Slider

 In the heavy industry, metal high-strength polyethylene materials are used as sliders in metal rolling presses, forging machines and other industrial machinery. The following advantages, long service life, replacement time and maintenance cost can be saved a lot. Maintain lubrication performance, resistance to impact fatigue, shock resistance, low noise, light weight, easy assembly and good wear resistance.

3, UHMWP Piston Ring, Support Ring

 Features of piston ring with ultra-high molecular weight polyethylene: light weight: about 15% of bronze weight, reducing motion loss, saving mechanical power, good sliding performance, small difference between static and dynamic friction coefficient, so it is not sticky like metal Phenomenon, good physical properties, can avoid cylinder liner, oil-free self-lubrication, good sealing, easy to leak oil, long life and improve work efficiency.

4, UHMWP Bushings, Bearings

 The use of ultra high molecular weight polyethylene as a shaft fitting has the following advantages: wear resistance, self-lubricating performance, and high PV value in general thermoplastics. Low friction coefficient, impact resistance, easy to hold shaft, sintering, no damage to the journal, long lubrication cycle, reduced maintenance, adaptability in harsh environments, long life.

5, UHMWP Roller

 Due to its resistance to chemicals, abrasion and self-lubrication, UHMWPE is used as a roller or as a metal roll outer liner for conveying guide rolls, reverse rolls, and travel rolls. Long service life, easy processing, less oiling, no oil leakage, no rust, oil stains and rust stains will not contaminate the fiber.

6, other aspects

 In addition to the above introduction, ultra-high molecular weight polyethylene is widely used in many aspects, such as: mixer wheel, valve body, valve core gasket, insulating sleeve, guide plate, pulley, etc., in the railway, there are moving shaft box liner, moving wheel spring The sling sleeve, the retaining ring, the crosshead sliding shoe, the rocker small end small square tile, etc., in the shipbuilding industry, there are bearings, water pump bearings, pulley sliders, sprocket, handle anti-electricity, sealing parts and the like.