112
Operator’s manual
A 222
13. GLOSSARY
Tyre
A tyre consists of:
I-the actual tyre,
II- the rim
(wheel),
III-the air chamber
(in tube type tyres),
IV-pressurised air.
The tyre must:
- withstand a load,
- ensure driving power,
- steer the vehicle,
- aid handling and braking,
- aid vehicle suspension.
I - Tyre
The actual tyre is the main part of the
overall tyre in contact with the road and is therefore
designed to withstand internal air pressure and all
other stress arising from use.
A tyre section shows the various parts it consists of:
1 - The tread
. This is the part in contact with the ground
when the tyre rolls. It comprises a rubber compound
and a “pattern” that is suitable for ensuring good
resistance to abrasion and good grip in dry and wet
conditions, as well as quiet operating conditions.
2 - Edge or bracing
. This is a metal fabric or textile
insert, in the area of the outer bead part. It protects
the casing plys from rubbing against the rim.
3 - Casing
. This is the resistant structure and comprises
one or more layers of rubber plys. The way the plys
comprising the casing are arranged give the structure
its name. The following structures are possible:
Conventional:
the plys are inclined and arranged so
that the strands comprising a ply overlap with those
of the adjacent ply. The tread, which is the part of
the tyre in contact with the ground, is part of the
sidewalls and so during rolling, sidewall flexure is
transmitted to the tread.
Radial:
the casing consists of one or more plys with
the cords in a radial direction.
A radial casing in itself is quite unstable. To make
it stable and prevent bad tread movement in the
area of contact with the ground, the casing and the
undertread are reinforced with an annular structure,
usually called belt. The tread and sidewall work with
different, independent rigidities, so during rolling,
I
III
II
IV
1
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13
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Summary of Contents for A 222
Page 59: ...Manuale d uso A 222 59 A 222 ...
Page 60: ...60 Manuale d uso A 222 A 222 VERSIONE TI ...
Page 61: ...Manuale d uso A 222 61 A 222 CON MOTORE AD ARIA ...
Page 62: ...62 Manuale d uso A 222 A 222 VERSIONE TI CON MOTORE AD ARIA ...
Page 63: ...Note 63 ...
Page 121: ...Operator s manual A 222 121 A 222 ...
Page 122: ...122 Operator s manual A 222 A 222 TI VERSION ...
Page 123: ...Operator s manual A 222 123 A 222 WITH AIR MOTOR ...
Page 124: ...124 Operator s manual A 222 A 222 TI VERSION WITH AIR MOTOR ...
Page 125: ... 125 ...
Page 183: ...Utilisation et entretien A 222 183 A 222 ...
Page 184: ...184 Utilisation et entretien A 222 A 222 VERSION TI ...
Page 185: ...Utilisation et entretien A 222 185 A 222 MOTEUR PNEUMATIQUE ...
Page 186: ...186 Utilisation et entretien A 222 A 222 VERSION TI MOTEUR PNEUMATIQUE ...
Page 187: ...Note 187 ...
Page 245: ...Betriebs und Wartungsanleitung A 222 245 A 222 ...
Page 246: ...246 Betriebs und Wartungsanleitung A 222 A 222 VERSION TI ...
Page 247: ...Betriebs und Wartungsanleitung A 222 247 A 222 DRUCKLUFTMOTOR ...
Page 248: ...248 Betriebs und Wartungsanleitung A 222 A 222 VERSION TI DRUCKLUFTMOTOR ...
Page 249: ...Hinweise 249 ...
Page 307: ...Uso y mantenimiento A 222 307 A 222 ...
Page 308: ...308 Uso y mantenimiento A 222 A 222 VERSIÓN TI ...
Page 309: ...Uso y mantenimiento A 222 309 A 222 MOTOR NEUMÁTICO ...
Page 310: ...310 Uso y mantenimiento A 222 A 222 VERSIÓN TI MOTOR NEUMÁTICO ...
Page 311: ...Notas 311 ...