COMPOSITES PLASTIC BALLS

Type
Materials
Description / Applications
PTFE filled PA6.6
PA6.6 + PTFE
Nylon PA6.6 balls with a small addition of PTFE (2%), they feature a lower friction coefficient ad better wear resistance in comparison to the standard Nylon balls.
MoS2 filled PA6.6
PA6.6 + MoS2
Nylon PA6.6 balls with a small addition of MoS2, they feature better mechanical properties and dimensional stability in comparison to the standard Nylon balls.
Metal detector PEEK
PEEK + detectable filler
PEEK balls with a detectable filler inside, they are typically used in the foodstuff field.
BaSO4 filled PP
PP + BaSO4
Polypropylene balls with addition of BaSO4, they feature better mechanical characteristics and a lower friction coefficient in comparison to the standard Polypropylene balls.
Technical data
Property
Symbol
U.o.M.
PA6.6+PTFE
PA6.6+MoS2
PEEK+D.F.
PP+BaSO4
% Filler element
-
%
2
1
2
25
Density
δ
[g/cm3]
1.16
1.15
1.44
1.12
Young's modulus
E
[MPa]
2800
3600
4400
1750
Friction coefficient
µ
-
0.20
0.22
0.27
0.20
Water absorption
Aw
%
1.80
2.30
0.02
0.01
Coefficient of linear thermal expansion
α
[10^-6/ºC]
99.0
80.0
54.1
168.8
Thermal conductivity
λ
[W/(m·K)]
0.25
0.29
1.43
0.24
Volume resistivity
ρ
[Ω*m]
> 10^14
> 10^12
> 10^12
> 10^14
Hardness
-
[Shore D]
70-80
80-90
90-100
75-85
Compressive yield strength
-
[MPa]
80-100
90-120
145-285
45-55
Service temperature (min/max)
-
[ºC]
-40/90
-20/80
-60/260
-30/120
Range
Diameters (min/max)
U.o.M.
Diameters (min/max)
U.o.M.
Precision Grade
1.500 - 100.000
[mm]
1/16 - 14
["]
0 - I - II - III - IV
Revision n.1