ACETAL COPOLYMER THRUST WASHERS (20021138)

Acetal Copolymer Thrust Washers ::

Acetal Copolymer has a good combination of properties, including low moisture absorption, good dimensional stability, and low friction, making it suitable for Bearing applications. We offer the range in varied sizes and dimensions as specified by clients. Our entire range is value for money.

Features :

• Good sliding properties
• Good temperature range
• Lightweight
• No maintenance
• Very good dimensional stability
• High impact strength
• Good chemical resistance (4<pH<13)
• Excellent resilience
• Ideal for food industry

Technical Specifications
Property	ASTM Methods	Units	ACETAL Copolymer
Colour	-	-	White
Specific Gravity	D792	-	1.41
Water Absorption Saturation in water	-	%	0.85
Tensile Strength	D638	N/mm2	70
Tensile Modulus	D638	N/mm2	3000
Elongation	D638	%	30
Flexural Strength	D790	N/mm2	-
Flexural Modulus	D790	N/mm2	-
Impact - Izod Notched	D256	J/m	80
Hardness	Rockwell Shore D	-	M86
Melt Point	D2117	°C	165
Max allowable service temp in air for short periods continuously for 20,000hrs	- -	°C °C	140 100
Linear thermal expansion coefficient	D696	K-1x10-5	12.5
Thermal Conductivity	C117	W/K.m	0.31
Flammability	UL	-	HB
Volume Resistivity	D257	Ohm.cm	1014
Dielectric Stength	D149	kV/mm	20
Coefficient of friction (dryVs steel) Limiting PV (V= 0.1 m/s) unlubricated   (V= 1.0 m/s) unlubricated   continuously lubricated		μ N/mm² N/mm² N/mm²	0.25-0.30 m/s 0.16 m/s 0.10 m/s 0.50
Maximum long term static load		N/mm²	22
Maximum velocity (sliding dry)		m/s	2
Outside applications - UV resistance	-	-	C/B
Acids - Strong (pH <3)	-	-	C
Alkalis - Strong (pH >11)	-	-	A
Chlorinated Hydrocarbons	-	-	A/B
Hot Water	-	-	A

A - No attack; B - Mild attack by absorption; C - Dimensional change due to absorption, D - Decomposition in short time.

PART CODE :: 20021138