| Property |
Ball
Size 5 |
Ball Size 4 |
Specifications |
| |
Approved |
Inspected |
Inspected |
| Weight |
420 - 445 grams |
410 - 450 grams |
350 - 390 grams |
ball pressure:
0.8 bar |
| Circumference |
68.5 - 69.5 cm |
68.0 - 70.0 cm |
63.5 - 66.0 cm |
ball pressure:
0.8 bar |
| Sphericity |
max. 1.5 % |
max. 2 % |
max. 2 % |
ball
pressure: 0.8 bar (deviation
of the measured
mean value) |
| Loss of
Pressure |
max. 20 % |
max. 25 % |
max. 25 % |
ball pressure:
1.0 bar at the start of the test max. loss of air after3
days (72h) |
| Water
Absorption |
average water
uptake of the initial weight of the tested balls: 10%
max. water
uptake per ball not to exceed 15%
|
average water
uptake of the initial weight of the tested balls: 15%
max. water
uptake per ball not to exceed 20%
|
average water
uptake of the initial weight of the tested balls: 15%
max. water
uptake per ball not to exceed 20%
|
ball pressure:
0.8 bar tank filled with water2 cm height 250 compressions
with constant ball rotation, ball deformation max. 25% |
| Rebound at
20°C
Rebound at 5°C
|
120 - 165 cm
min. 120 cm
max.
difference between lowest and highest rebound per ball
tested: 10cm
|
115 - 165 cm
min. 110 cm
max.
difference between lowest and highest rebound per ball
tested: 10cm
|
110 - 160 cm
min. 110 cm
max.
difference between lowest and highest rebound per ball
tested: 10cm
|
ball pressure:
0.8 bar each ball being dropped 10 times (on to different
panels) from a height of 2 meters onto a steel plate |
Shape and
Size Retention Test including change of pressure
- increase in
circumference
- deviation
on sphericity
- change of
pressure
|
Measured after
2000 kicks seams and air-valve undamaged
max. 1.5 cm
max. 1.5%
max. 0.1 bar
|
|
ball pressure:
0.8 bar shooting onto a steel panel at approx. 50 km/h
Shooting
length: 2.50 m
|