POLYURETHANE RUBBER BALLS

High performances polyurethane elastomer balls, they are featured by excellent mechanical properties, high wear, laceration and collision resistance, joined with a good elastic behaviour. Good radiation and weather resistance.
Applications
Special bearings, pneumatic pumps, applications where good elastic properties correlated to high toughness are required.
Technical name
Commercial name
Abbreviation
-
Polyurethane rubber
PUR
Physical / mechanical / thermal / electric / magnetic properties
Property
Symbol
U.o.M.
Type
Notes
Values
Density
δ
[g/cm3]
Physical
Room temp.
1.15
Young's modulus
E
[MPa]
Mechanical
-
100
Elongation at break
A
%
Mechanical
Room temp.
max 750
Compression set
-
%
Mechanical
Room temp.
11
Friction coefficient
µ
-
Mechanical
Room temp.
0.80
Coefficient of linear thermal expansion
α
[10^-6/ºC]
Thermal
(ΔT=0-100°C)
180.0
Thermal conductivity
λ
[W/(m·K)]
Thermal
Room temp.
0.25
Volume resistivity
ρ
[Ω*m]
Electric
-
> 10^8
Relative magnetic permeability
µ
-
Magnetic
Diamagnetic
<~1
Technical data
Property
Type
U.o.M.
Values
U.o.M.
Values
Hardness
Mechanical
[Shore A]
50 - 95*
-
-
Ultimate tensile strength
Mechanical
[MPa]
8 - 45
[psix10^3]
1.16 - 6.53
Service temperature
Thermal
[ºC]
-20 / 80
[ºF]
-20 / 176
Range
Diameters (min/max)
U.o.M.
Diameters (min/max)
U.o.M.
Precision Grade
1.000 - 152.400
[mm]
3/64 | 6
["]
III
Corrosion Resistance
Good corrosion resistance in contact with nitrogen, oxygen, ozonemineral oils and greases, aliphatic hydrocarbons, diesel oil. They are attacked by hot water and steam, acids, alkalis.
Property
Description
Hardness*
Available hardness: 50-60/65-75/70-80/80-90/85-95 Shore A
Revision n.16