UHMW (Ultra-High-Molecular-Weight Polyethylene) | Plastic Ball Bearings all Made in Japan Kashima Bearings, Inc. Japan

These are the properties of UHMW (Ultra-High-Molecular-Weight Polyethylene), a material used in plastic bearings. Take a look at the characteristics of this material.

Overview of UHMW

UHMW (Ultra-High-Molecular-Weight Polyethylene) is a type of polyethylene with extremely high molecular weight bonding, which belongs to the olefin-based plastics. It is mainly composed of ethylene and is produced through advanced polymerization techniques. UHMW is an extremely high molecular weight, special thermoplastic resin.

Due to its different processing methods and properties, it differs significantly from ordinary polyethylene. It possesses remarkable stretchability and is the material with the most demanding surface finishing. It exhibits excellent abrasion resistance, retains its properties even at low temperatures, and is resistant to chemicals. Additionally, it is low in water absorption, lightweight, and rarely produces toxic gases even when burned.

These characteristics define UHMW (Ultra-High-Molecular-Weight Polyethylene), the material used in plastic bearings. Please check the unique features of this material.

Main applications of UHMW

Hoppers for materials such as cement and coal, ice rinks, doctor blades, bearings, gears and gearboxes, electrocoating components, artificial joints, ship components, etc.

Characteristics of UHMW

◎Recommended　○Satisfactory　△Possible to use, but not recommended　×Not compatible

Material	Product Code	Dry	Water (extended periods of time)	Water /Seawater	Steam	Chemical Environment				Magnetic Environment	As Insulator
Material	Product Code	Dry	Water (extended periods of time)	Water /Seawater	Steam	Acids	Alkaline	Organic Liquids	Oil	Magnetic Environment	As Insulator
Phenol	SD	◎	◎	◎	◎	○	×	◎	◎	◎	◎
	SDK	◎	◎	◎	◎	○	×	◎	◎	×	×
	SDHG	◎	△	△	×	○	×	○	◎	×	×
PTFE	PT	◎	◎	◎	◎	◎	◎	◎	◎	◎	×
	PTG	◎	◎	◎	◎	◎	×	◎	◎	◎	◎
	PTE	◎	◎	◎	◎	◎	◎	◎	◎	◎	◎
	PTN	◎	◎	◎	◎	◎	◎	◎	◎	◎	◎
UHMW	PE	○	○	◎	×	◎	◎	◎	◎	◎	◎
PP	PP	△	○	○	△	○	○	○	○	◎	◎
PEEK	PK	○	○	○	○	◎	◎	◎	◎	◎	◎
PEEK	PKG	◎	○	○	◎	◎	◎	◎	◎	◎	×
PPS	PS	○	◎	◎	◎	◎	◎	◎	◎	◎	◎
PPS	PSG	◎	◎	◎	◎	◎	◎	◎	◎	◎	×
PCTFE	PCT	○	○	○	◎	◎	◎	○	○	◎	◎
PVDF	PV	○	○	○	◎	◎	◎	○	○	◎	◎
Carbon	CY	◎	○	○	◎	◎	◎	◎	◎	○	×

Note: Please contact us for detailed information regarding compatibility with specific chemicals.

Temperature resistance performance of UHMW

☆Highly recommended　◎Recommended 　○Satisfactory 　△Possible to use, but not recommended　×Not compatible

Material	Product Code	Temperature
Material	Product Code	-190℃～	-100℃～	-50℃～	-20℃～	Room or Operating Temperature	～120℃	～200℃	～350℃
Phenol	SD	×	×	〇	◎	☆	◎	×	×
Phenol	SDK	×	×	〇	◎	☆	◎	×	×
PTFE	PT	〇	◎	◎	◎	☆	◎	△	×
	PTG	〇	◎	◎	◎	☆	◎	△	×
	PTE	〇	◎	◎	◎	☆	◎	△	×
UHMW	PE	×	△	〇	〇	☆	×	×	×
PP	PP	×	△	〇	〇	☆	〇	×	×
PEEK	PK	×	×	〇	◎	☆	◎	〇	×
PEEK	PKG	×	×	〇	◎	☆	◎	◎	×
PPS	PS	×	×	×	〇	☆	◎	〇	×
PPS	PSG	×	×	×	〇	☆	◎	〇	×
PCTFE	PCT	×	×	〇	◎	☆	〇	×	×
Carbon	CY	×	×	△	〇	☆	◎	◎	◎*

*Note: Please consider the coefficient of thermal expansion, or contact us for specialized applications.

UHMW

Overview of UHMW

Main applications of UHMW

Characteristics of UHMW

Temperature resistance performance of UHMW

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