Plastic Plain Bearings Block And HDPE Insert Bearings

Product Description

Top Bearings is China manufacturers and suppliers who mainly produces Plastic Plain Bearings Block And HDPE Insert Bearings with many years of experience. Hope to build business relationship with you.

The plastic ball bearing units specially have the performance of corrosion and wear resistance, reduce vibration and anti-bump, are free from the maintenance and so forth. Such is the most ideal solution of many difficult problem which have puzzled the industry field for hundreds years. Aim at working in different environment, the ball bearing for units made with POM, HDPE, PP, UPE, PTFE or PEEK material, housing of the bearing units generally made with PBT material.

Material:	POM, HDPE, PP, UPE, PTFE, PEEK, PBT	Basic Properties:	Specially Have The Performance Of Corrosion And Wear Resistance
Maintenance:	Free	Weight:	Light
Material Of Housing Of The Bearing Units:	PBT Material	Material Of The Ball Bearing For Units:	POM, HDPE, PP, UPE, PTFE Or PEEK Material
High Light:	peek ball bearings，pillow block bearings

Basic properties of staple engineer plastic

Material	HDPE	PP	POM	PA66	PVDF	PPS	PTFE	PEEK
Long-time working temp.	90	100	110	100	150	230	260	280
Density	g/cm3	0.91	1.42	1.14	1.77	1.35	2.18	1.32
Ball indentation hardness	50	80	170	170	80	190	30
Tensile stress	25	30	70	80	50	75	25	95
Sliding friction coefficient	0.29	0.3	0.34	0.35-0.42	0.3		0.08-0.1	0.3-0.38
Melted temperature	130	165	175	260	172	280	327	343
Short-time highest application temperature	90	140	150	170	150	260	260	300
Coet of Inear expansion (10^-5/K)	13-15	17	10	8	13	5	12	5
Dielectric constant at 1 Mhz(10^6HZ)	2.4	2.25	3.7	3.6-5	8		2.1	3.2-3.3
Volume resisrivity (Ω·cm)	>10^15	>10^24	>10^14	10^13	10^12	>10^13	10^14	10^13
flammability UL94	+	+	-	(+)	(+)	-	+	+
Anti-weathering	-	-	-	-	-	-	+	-
Note: + =resistant; (+) =partly resistant; - =non-resistant

Comparison of bearing material technical data

Technical data	unit	GCr15	9Cr18	Si3N4	AL203	ZrO2
Density	g/cm³	7.8	7.9	3.2	3.95	6
a Coefficient of expansion	10^-6/℃	11	17	3.2	9.1	10.5
E modulus of elasticity	Gpa	208	200	320	380	210
μ Poisson ratio		0.3	0.3	0.26	0.27	0.3
HV Hardness		800	700	1700	1800	1300
δ Flexural strength	Mpa	2400	2600	900	220	1000
δ Compressive Strength	MPa			2000	1500	3500
Kc Impact strength	Nm/cm²	20	25	7	3.5	11
λ Thermal conductivity	W/mk	30-40	15	3.5	25	2.5
Ω Specific resistivity	mm²/m	1	0.75	10^18	10^8	10^5
Specific heat	J/KgK	450	450	800	880	400
Application temperature	℃	120	150	1000	1850	800
Anti-corrossion		No	poor	Good	Good	Good
Cycle stress		10*10^6	10*10^6	50*10^6	30*10^6	50*10^6
Destroy model		peel	peel	peel	fracture	peel/fracture
Anti-magnetism		Yes	Yes	No	No	No
Dimension stability		bad	poor	Good	Good	Good
Insulate properties		No insulation	No insulation	Good	Good	Good

Chemical properties of Engineer plastic

Chemical Composition	Material
Chemical Composition	PI	PEEK	PTFE	PVDF	PA66	POM	PP	HDPE	ABS
Acrtate	+	+	+	(+)	(+)	+	+	(+)	+
Formic acid (10% water)	+	+	+	+	-	-	+	+	+
Ammonia (10% water)	-	+	+	+	+	(+)	+	+	+
Aether	+		+	+	+	+	+	+
Petrol	+	+	+	+	+	+	(+)	(+)	(+)
Bori acid (10% water)		+	+	(+)	+	+	+	+	+
Aminoform	+	+	+		-	-	(+)	-	-
Aeti aid 100%	(+)	-	+		-	-	+	+	-
Aceti aid (10% water)	+	+	+		-	(+)	+	+	+
HF			+		-	-	+	+	(+)
Formaldehyde aqu (30% water)		+	+	+	+	-	+	+	+
Glycerin	+		+		+	+	+	+	+
Iodine, Glycol	+		+	(+)	-	(+)	+	+	(+)
K2Cr2O7 (10% water)			+	+	+	-	+	+	+
KMnO4 (1% water)	+	+	+	+	-	(+)	+	+	(+)
2-Hydronyprpionic 10%	+		+	+	-	-	+	+	-
2-Hydronyprpionic 90%	+	+	+	+	+	(+)	+	+	+
Nad (10% water)	+	+	+	+	+	+	+	+	+
NaNO3 (10% water)	+		+	+	+	+	+	+	+
NaOH (50% water)		+	+	+	+	-	+	+	+
NaOH (5% water)			+	+	+	-	+	+
Oxalic (10% water)	+	+	+	+	(+)	(+)	+	+	+
Tetracarp	+		+	+	(+)	+	-	-	(+)
H3PO3 100%		+	+		-			+	+
H3PO4 (10% water)		+	+	+	-	-	+		+
NHO3 (2% water)	+	+	+	+	-	-	+	+	+
HCL (2% water)	+	+	+	(+)	-	-	+	+	+
H2SO4 98%		-	+		-	-	+	(+)	-
Soap liquid			+	+	+	+	+	+
Alkaliliquid (10% water)			+	+	+	+	+	+	+
Toluene	+	+	+	+	+	+	+	(+)	-
Water, cold	+	+	+	+	+	+	+	+	+
Water, hot		+	+	+	(+)	-	+	+	+
H2O2 (30% water)		(+)	+	+	-	-	+	+	+
H2O2 (0.5% water)	+		+	+	-	(+)	+	+	+
Asphalt	+		+		(+)	+	(+)	(+)
Note: + =resistant; (+) =partly resistant; - =non-resistant

Plastic Plain Bearings Block And HDPE Insert Bearings Light Weight 0

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