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PLASTIC BALLS
Plastic balls are produced using standard and special polymer resins with diameters from 1.50 to 150 mm. and they can be used instead of stainless steel or steel balls in various industrial applications at lower cost than metal balls.
Plastic balls offer above all the advantage of being very light, sinces their specific weight is very low. They are also highly resistant to heat and they provide smooth and silent running, totally noise and friction free. Unlike conventional metal balls they do not require lubrication.
Another important feature is their excellent resistance to oxidation and abrasion and, therefore the use of these balls, even in very corrosive environments, allows long life of the component concerned. They also provide electrical and heat insulation and are not magnetic. The most suitable type of synthetic material can be chosen from a wide range of plastics each with different characteristics.
The most common applications include plastic bearings and rollers, ball bearings for furniture, micro-pumps for sprays, dispensers, pumps and valves, precision instruments, measurement and control equipment, photographic and pharmaceutical equipment, computers, conditioning and automation equipment, photocopiers and equipment for the industry.
NYLON (PA)
Insoluble in common solvents, alcalis, diluted mineral acids and organic acid substances. It is, above all, resistant to alcalis, oils and petroleum greases at temperatures up to 150 °C, inorganic saline solutions, aromatic hydrocarbons, low strength alcohols, gasoline. It has high strength, rigidity and hardness characteristics.
DELRIN (ACETAL RESIN - POM)
Polymer resin with excellent mechanical and chemical resistance and good electrical properties. Resistant to inorganic saline solutions, aliphatic, aromatic and chlorinated hydrocarbons, low strength alcohols, ether, combustible mixtures, mineral oils and greases. Balls made of these materials are often used for sliding fittings of tables and drawers, furniture bearings, rollers, valves and electronic components, sailing boat fittings.
POLYPROPYLENE (PP)
Excellent chemical resistance, low specific weight (less than water) and the highest melting point of thermoplastics. It is an excellent electrical insulator and has a low dielectric constant coefficient. It is often used where the capacity to float on fluids in general is required. It is ideal for equipment used for blood transfusions, level indicators and deodorant roll-on sticks. It is highly resistant to chemical substances, such as acids, alcalis, alcohols and many inorganic substances, saline solutions, solvents, alcohols, gasoline (petrol), water, oils, greases, detergent, fruit juices and milk. It is not resistant to aromatic hydrocarbons and chlorates. It is perfect for all medical and pharmaceutical applications.
POLYSTIRENE (PS)
A low cost thermoplastic with excellent resistance to abrasion and strong impacts. It is commonly used for various medical, pharmaceutical and electronic applications.
TEFLON (PTFE)
It is exceptionally resistant to most industrial acids, inorganic saline solutions, caustic substances, cryogenic liquids and hydrocarbons. It cannot be damaged by any kind of solvent. It is self-lubricating and recommended for all uses that require strong chemical resistance.
POLYETHYLENE (PE)
This material has a low density compared with other types of plastics and it is suitable for applications where the capacity to float is required. It is very strong and resistant to elongation. It also has excellent electrical and dielectric properties. It's absorbing very little water, has high chemical resistance, and it's resistant to diluted acids, alcalis, solvents, alcohols, gasoline (petrols), water, grease and oils. It is not resistant to oxidising acids, ketones, aromatic or chlorinated hydrocarbons and detergents. It is odourless, and there are no counter-indications for the use of this material with food.
VULKOLLAN (PUR)
A polyurethane with excellent resistance to abrasion and with the advantage that it can adapt itself to any imperfections in the ball housing. It is resistant to combustible mixtures, greases, oils, alcohols, gasoline (petrol), ozone, oxygen, weak acids and alcalis. It is not resistant to strong acids and alcalis, aromatic alcohols, hot water, hot air, saturated steam and some gasoline (petrol) additives.
TORLON
Highly resistant to heavy loads and compression. Used in bearings and heavy duty sailing boat fittings.
List of materials used for plastic ball:
Nylon, Delrin, Acetal, Celcon, Hostaform, ABS, Plexiglas, Polycarbonate (Lexan), High and low density Polyethylene, Polystyrene, Polypropylene, P.V.C., Torlon, Teflon.
On request, we can produce mineral or glass fibres filled balls.
PLASTIC BALLS DIAMETERS
| DIAMETER |
DIAMETER |
DIAMETER |
| mm |
Inches |
mm |
inches |
mm |
Inches |
| 1 |
|
15 |
|
41,275 |
1 5/8 |
| 1,2 |
|
15,081 |
19/32 |
42,862 |
1 11/16 |
| 1,5 |
|
15,875 |
5/8 |
44,450 |
1 3/4 |
| 2 |
|
16 |
|
45 |
|
| 2,381 |
3/32 |
16,669 |
21/32 |
46,038 |
1 13/16 |
| 2,5 |
|
17 |
|
47,625 |
1 7/8 |
| 3 |
|
17,462 |
11/16 |
49,212 |
1 15/16 |
| 3,175 |
1/8 |
18 |
|
50 |
|
| 3,5 |
|
18,256 |
23/32 |
50,800 |
2 |
| 3,969 |
5/32 |
19,050 |
3/4 |
53,975 |
2 1/8 |
| 4 |
|
19,844 |
25/32 |
55 |
|
| 4,5 |
|
20 |
|
57,150 |
2 1/4 |
| 4,762 |
3/16 |
20,638 |
13/16 |
60 |
|
| 5 |
|
21 |
|
60,325 |
2 3/8 |
| 5,5 |
|
22 |
|
63,500 |
2 1/2 |
| 5,556 |
7/32 |
22,225 |
7/8 |
65 |
|
| 6 |
|
23 |
|
66,675 |
2 5/8 |
| 6,350 |
1/4 |
23,812 |
15/16 |
69,850 |
2 3/4 |
| 6,5 |
|
24 |
|
70 |
|
| 7 |
|
25 |
|
73,025 |
2 7/8 |
| 7,144 |
9/32 |
25,400 |
1 |
75 |
|
| 7,5 |
|
26 |
|
76,200 |
3 |
| 7,938 |
5/16 |
26,988 |
1 1/16 |
80 |
|
| 8 |
|
28 |
|
82,550 |
3 1/4 |
| 8,5 |
|
28,575 |
1 1/8 |
85 |
|
| 8,731 |
11/32 |
30 |
|
88,900 |
3 1/2 |
| 9 |
|
30,162 |
1 3/16 |
90 |
|
| 9,525 |
3/8 |
31,750 |
1 1/4 |
95 |
|
| 10 |
|
32 |
|
95,250 |
3 3/4 |
| 10,319 |
13/32 |
33,338 |
1 5/16 |
100 |
|
| 11 |
|
34 |
|
|
|
| 11,112 |
7/16 |
34,925 |
1 3/8 |
|
|
| 11,906 |
15/32 |
35 |
|
|
|
| 12 |
|
36 |
|
|
|
| 12,700 |
1/2 |
36,512 |
1 7/16 |
|
|
| 13 |
|
38 |
|
|
|
| 13,494 |
17/32 |
38,100 |
1 1/2 |
|
|
| 14 |
|
39,688 |
1 9/16 |
|
|
| 14,288 |
9/16 |
40 |
|
|
|
| PRECISION
GRADES |
| GRADE |
TOLERANCE ON Æ (µm) |
TOLERANCE ON SPHERICITY (µm) |
| GR. I |
± 25 |
± 12 |
| GR. II |
± 50 |
± 25 |
| GR. Ill |
±127 |
±127 |
| SURFACE FINISH |
| GRADE I AND II |
TUMBLED AND POLISHED |
| GRADE III |
MATTE |
| COLORS AVAILABLE ON REQUEST |
| RED |
GREEN |
YELLOW |
ORANGE |
BLUE |
BLACK |
GREY |
| DIAMETER |
NET WEIGHTS PER 100
BALLS |
| Mm |
Inch |
PA |
POM |
PP |
PUR |
| 1 |
|
|
0,076 |
|
|
| 1,2 |
|
|
0,131 |
|
|
| 1,5 |
|
|
0,256 |
|
|
| 2 |
|
0,414 |
0,607 |
0,394 |
|
| 2,381 |
3/32 |
0,698 |
1,02 |
0,665 |
|
| 2,5 |
|
0,92 |
1,18 |
0,78 |
|
| 3 |
|
1,59 |
2,05 |
1,34 |
1,78 |
| 3,175 |
1/8 |
1,90 |
2,44 |
1,60 |
2,12 |
| 3,969 |
5/32 |
3,69 |
4,74 |
3,11 |
4,12 |
| 4 |
|
3,78 |
4,85 |
3,18 |
4,21 |
| 4,762 |
3/16 |
6,41 |
8,23 |
5,39 |
7,15 |
| 5 |
|
7,39 |
9,48 |
6,22 |
8,24 |
| 5,556 |
7/32 |
10,1 |
12,9 |
8,49 |
11,3 |
| 6 |
|
12,7 |
16,3 |
10,7 |
14,1 |
| 6,35 |
1/4 |
14,8 |
19,0 |
12,5 |
16,5 |
| 7 |
|
20,3 |
26,0 |
17,1 |
22,6 |
| 7,144 |
9/32 |
21,5 |
27,7 |
18,1 |
24,0 |
| 7,938 |
5/16 |
29,6 |
38,0 |
24,9 |
33,0 |
| 8 |
|
30,2 |
38,7 |
25,4 |
33,60 |
| 9 |
|
43,1 |
55,4 |
36,3 |
48,1 |
| 9,525 |
3/8 |
51,0 |
65,5 |
42.9 |
56,9 |
| 10 |
|
59,1 |
75,8 |
49,7 |
65,9 |
| 10,319 |
13/32 |
63,6 |
81,7 |
53,6 |
71,0 |
| 11 |
|
78,6 |
101,0 |
66,1 |
87,7 |
| 11,112 |
7/16 |
81 |
104 |
68,2 |
90,4 |
| 12 |
|
102 |
131 |
85,8 |
114 |
| 12,7 |
1/2 |
121 |
155 |
102 |
135 |
| 13 |
|
130 |
167 |
109 |
145 |
| 14 |
|
162 |
208 |
137 |
181 |
| 14,288 |
9/16 |
172 |
221 |
145 |
192 |
| 15 |
|
200 |
256 |
168 |
223 |
| 15,081 |
19/32 |
203 |
260 |
170 |
226 |
| 15,875 |
5/8 |
237 |
304 |
200 |
264 |
| 16 |
|
241 |
310 |
203 |
269 |
| 18 |
|
245 |
443 |
290 |
385 |
| 18,256 |
23/32 |
359 |
461 |
302 |
401 |
| 19 |
|
408 |
524 |
343 |
455 |
| 19,05 |
3/4 |
408 |
524 |
343 |
455 |
| 19,5 |
|
438 |
562 |
369 |
488 |
| 20 |
|
414 |
607 |
394 |
525 |
| 21 |
|
479 |
698 |
456 |
607 |
| 22 |
|
629 |
808 |
530 |
702 |
| 22,225 |
7/8 |
649 |
834 |
547 |
724 |
| 25 |
|
922 |
1183 |
776 |
1029 |
| DIAMETER |
NET WEIGHT PER 100 BALLS |
| mm |
inch |
PA |
POM |
PP |
PUR |
| 30 |
|
1,6 |
2,0 |
1,3 |
1,8 |
| 40 |
|
3,8 |
4,8 |
3,2 |
4,2 |
| 45 |
|
5,4 |
6,9 |
4,5 |
6,0 |
| 50 |
|
7,4 |
9,5 |
6,2 |
8,2 |
| 60 |
|
12,7 |
16,3 |
10,7 |
14,1 |
| 70 |
|
20,3 |
26,0 |
17,1 |
22,6 |
| 80 |
|
30,2 |
38,7 |
25,4 |
33,6 |
| 90 |
|
43,1 |
55,4 |
36,3 |
48,1 |
| 100 |
|
59,1 |
75,8 |
49,7 |
65,9 |
| CONTINUOUS HEAT RESISTANCE |
| MATERIAL TYPE |
TEMPERATURE °C |
| Silicon |
+315 |
| Teflon |
+287 |
| Nylon |
+163 |
| Polypropilene |
+149 |
| Polycarbonate |
+121 |
| Polyesther |
+121 |
| High density polyethylene |
+121 |
| Delrin |
+105 |
| Vulkollan |
+94 |
| Acrylic |
+82 |
| Polystyrene |
+76 |
PLASTIC BALLS - DATA SHEET
| ISO SYMBOL |
TRADE NAME |
CHEMICAL NAME |
GENERAL PROPERTIES |
MECHANICAL PROPERTIES |
| SPECIFIC WEIGHT Kg/dm3 ASTM D.792 |
WATER ABSORBTION% ASTM D.570 |
TENSILE STRENGTH Kg/cm2 ASTM D.638 |
STRETCH % ASTM D.638 |
MODULUS OF TENSILE ELASICITY-Kg/cm2 ASTM D.638 |
IMPACT STRENGTH IZOD - Kg.cm/cm2 ASTM D.526 |
IMPACT STRENGTH CHARPY Kg.cm/cm2 |
ROCKWELL HARDNESS CONV. NUMBER ASTM D.785 |
SHORE HARDNESS CONVENTIONAL NUMBER |
| PE |
POLYETHY-LENE |
Polyethylene PM 300.000 |
0,95
DIN 53479 |
<0,01
ASTM D.570 |
330
DIN 53455 |
>800
DIN 53455 |
4200-12500
ASTM D.638 |
DIN 53453 |
|
60-70
ASTM D.785 |
64 DIN 53505
Scale D |
| |
|
Polyethylene PM 500.000 |
0,95
DIN 53479 |
<0,01
ASTM D.570 |
350
DIN 53455 |
>600
DIN 53455 |
4200-12500
ASTM D.638 |
DIN 53453 |
|
60-70
ASTM D.785 |
65 DIN 53505
Scale D |
| |
|
Polyethylene PM 1.000.000 |
0,95
DIN 53479 |
<0,01
ASTM D.570 |
440
DIN 53455 |
>450
DIN 53455 |
4200-12500
ASTM D.638 |
DIN 53453 |
|
60-70
ASTM D.785 |
64÷67 |
| PP |
MOPLEN |
Polypropylene |
0,90 |
0,01÷0,03 ASTM D.570 |
320
ASTM 638 |
100
ASTM 638 |
1000-15500
ASTM D.638 |
17 Kg cm/cm
at 23°C |
|
80-110
ASTM D 785 |
80 D |
| PTFE |
TEFLON |
Polytetrafluoro- ethylene |
2,1÷2.3
ASTM D 792 |
0,005
ASTM D.570 |
150÷300
ASTM 638 |
100÷300
ASTM 638 |
3500-6300
D747 |
16 Kg cm/cm
(at 23°C)
ASTM D.256 |
|
|
D50÷D65
ASTM D 676 |
| PS |
POLYSTY-RENE |
Impact resistant
polystyrene |
1,05 |
0,1 |
350 |
20 |
17000 |
5÷30 |
|
M 40-70 |
|
| ABS |
SICO ELEX |
Terpolymer ABS |
1,04 |
0,5 |
450 |
4 |
21000 |
11÷32
ASTM D.526 |
9 |
R107÷115 |
|
| PVC |
SICODUR |
Stiff polyvinyl chloride |
1,40
ASTM D.792 |
0,1
ASTM D.570 |
550
(yielding)
ASTM 638 |
120
ASTM D.638 |
25000-40000
ASTM D.638 |
4,3 Kg cm/cm
(at 25°C)
ASTM D 256 |
|
90 scale L
ASTM D.785 |
|
| PA |
NYLON |
Polyamide
6.6 |
1,14
ASTM D.792 |
8
ASTM D.570 |
760
ASTM 638 |
60
ASTM 638 |
17000
ASTM 638 |
8 (at 25°C)
ASTM D.256 |
|
115 scale R |
80 D |
| PC |
LEXAN |
Polycarbonate |
1,20 (at 23 °C)
ASTMD.792 |
0.35(at23°C)
0,58(at100°C) |
670
ASTM 638
and 882 |
110
ASTM 638
and 882 |
23900
ASTM 638
and 882 |
16FE/Lb |
|
70 scale M
118 scale R |
|
| |
|
|
1,2 |
0,3
ASTM D.570 |
600 (at 25 °C)
ASTM 638 |
75
ASTM 638 |
24000 (a 25 °C)
ASTM 638 |
22 (at 25°C)
15(at 40°C) |
|
124 scale R |
|
| ISO SYMBOL |
TRADE NAME |
CHEMICAL NAME |
GENERAL PROPERTIES |
MECHANICAL PROPERTIES |
| SPECIFIC WEIGHT Kg/dm3 ASTM D.792 |
WATER ABSORBTION% ASTM D.570 |
TENSILE STRENGTH Kg/cm2 ASTM D.638 |
STRETCH % ASTM D.638 |
MODULUS OF TENSILE ELASICITY-Kg/cm2 ASTM D.638 |
IMPACT STRENGTH IZOD - Kg.cm/cm2 ASTM D.526 |
IMPACT STRENGTH CHARPY Kg.cm/cm2 |
ROCKWELL HARDNESS CONV. NUMBER ASTM D.785 |
SHORE HARDNESS CONVENTIONAL NUMBER |
| POM |
DELRIN CELCON |
Polyoxymethy-lene (Delrin) |
1,42 ASTM D.792 |
0,9 ASTM D.570 |
680 ASTM D.638 |
75 ASTM D.638 |
29000 ASTM D.638 |
18 (at 25 °C)
10 (at 40 °C)
ASTM D.256 |
|
120 scale R ASTM D.785 |
|
| PUR |
|
High PM polyurethane Vulkollan V 64 |
1,26 |
|
300
ASTM D.412 |
|
|
38
ASTM D.1054 |
|
|
64 A
ASTM D.1706 |
| |
|
High PM polyurethane Vulkollan V 80 |
1,26 |
|
350
ASTM D.412 |
|
|
40
ASTM D.1054 |
|
|
80 A
ASTM D.1706 |
| |
|
High PM polyurethane Vulkollan V 90 |
1,26 |
|
350
ASTM D.412 |
|
|
39
ASTM D.1054 |
|
|
90A-42D
ASTM D.1706 |
| |
|
High PM polyurethane Vulkollan V 94 |
1,26 |
|
350
ASTM D.412 |
|
|
38
ASTM D.1054 |
|
|
94A-45D
ASTM D.1706 |
|
|
|
|
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