ISO 5775
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ISO 5775 es una norma internacional para marcar las cubiertas y las llantas de bicicleta . El sistema se desarrolló originalmente en la Organización Técnica Europea de Neumáticos y Llantas (ETRTO).
[editar] Cubiertas
[editar] Cubiertas de aro semirígido
| Sección nominal ancho de rueda |
anchura de llanta recomendada | |
|---|---|---|
| llanta de pared recta | Llanta de tipo Crotchet | |
| 16 | - | 13C |
| 18 | - | 13C |
| 20 | - | 13C |
| 23 | 16 | 13C, 15C |
| 25 | 16, 18 | 13C, 15C, 17C |
| 28 | 16, 18, 20 | 15C, 17C, 19C |
| 32 | 16, 18, 20 | 15C, 17C, 19C |
| 35 | 18, 20, 22 | 17C, 19C, 21C |
| 37 | 18, 20, 22 | 17C, 19C, 21C |
| 40 | 20, 22, 24 | 19C, 21C, 23C |
| 44 | 20, 22, 24, 27 | 19C, 21C, 23C, 25C |
| 47 | 20, 22, 24, 27 | 19C, 21C, 23C, 25C |
| 50 | 22, 24, 27, 30.5 | 21C, 23C, 25C |
| 54 | 27, 30.5 | 25C |
| 57 | 27, 30.5 | 25C |
| 62 | 27, 30.5 | - |
En la siguiente tabla se detallan las equivalencias entre las denominaciones antiguas y las de la norma ISO 5775:
Denominación | Marcado antiguo (bien en pulgadas o bien dando
actual | el diámetro exterior en mm)
-------------|-----------------------------------------------------
28-590 | 26 × 1 3/8 × 1 1/8
-------------|-----------------------------------------------------
28-622 | 28 × 1 5/8 × 1 1/8 700 × 28C
| 28 × 1 5/8 × 1 1/4 × 1 1/8 700 C Carrera
-------------|-----------------------------------------------------
28-630 | 27 × 1 1/4 fifty
-------------|-----------------------------------------------------
28-635 | 700 B
-------------|-----------------------------------------------------
28-642 | 28 × 1 3/8 × 1 1/8 700 × 28 A
-------------|-----------------------------------------------------
32-239 | 12 × 1 3/8 × 1 1/4 300 × 32
-------------|-----------------------------------------------------
32-248 | 12 × 1 1/4 300 × 32 A
-------------|-----------------------------------------------------
32-288 | 14 × 1 3/8 × 1 1/4 350 × 32
-------------|-----------------------------------------------------
32-298 | 14 × 1 1/4 350 × 32 A
-------------|-----------------------------------------------------
32-340 | 16 × 1 3/8 × 1 1/4 400 A
| 400 × 32
-------------|-----------------------------------------------------
32-349 | 16 × 1 1/4 NL 400 × 32 A
-------------|-----------------------------------------------------
32-357 | 17 × 1 1/4
-------------|-----------------------------------------------------
32-369 | 16 × 1 1/4
-------------|-----------------------------------------------------
32-390 | 18 × 1 3/8 × 1 1/4 450 A
| 450 × 32
-------------|-----------------------------------------------------
32-400 | 18 × 1 1/4 450 × 32A
-------------|-----------------------------------------------------
32-438 | 500 × 32 ANL
-------------|-----------------------------------------------------
32-440 | 20 × 1 3/8 × 1 1/4 500 A
| 500 × 32
-------------|-----------------------------------------------------
32-451 | 20 × 1 1/4 500 × 32 A
-------------|-----------------------------------------------------
32-489 | 550 × 32 ANL
-------------|-----------------------------------------------------
32-490 | 22 × 1 3/8 × 1 1/4 550 A
| 550 × 32
-------------|-----------------------------------------------------
32-501 | 22 × 1 1/4 550 × 32 A
-------------|-----------------------------------------------------
32-508 | 22 × 1 1/4 × 1
-------------|-----------------------------------------------------
32-540 | 24-1 3/8 × 1 1/4
-------------|-----------------------------------------------------
32-541 | 24 × 1 3/8 × 1 1/4 NL 600 A
| 600 × 32 A
-------------|-----------------------------------------------------
32-547 | 24 × 1 1/4
-------------|-----------------------------------------------------
32-590 | 26 × 1 3/8 1 1/4 650 × 32A
-------------|-----------------------------------------------------
32-597 | 26 × 1 1/4
-------------|-----------------------------------------------------
32-622 | 28 × 1 5/8 × 1 1/4 700 × 32C
| 28 × 1 1/4 × 1 3/4 700 × C Course
-------------|-----------------------------------------------------
32-630 | 27 × 1 1/4
-------------|-----------------------------------------------------
32-635 | 28 × 1 1/2 × 1 1/8 700 × 28 B
| 700 B Course
-------------|-----------------------------------------------------
37-288 | 350 A Comfort
| 350 A 1/2 Balloon
-------------|-----------------------------------------------------
37-298 | 14 × 1 3/8
-------------|-----------------------------------------------------
37-337 | 16 × 1 3/8 ANL
-------------|-----------------------------------------------------
37-340 | 16 × 1 3/8 NL 400 A Comfort
| 400 A 1/2 Balloon
| 400 × 42 A
| 400 × 35 A
-------------|-----------------------------------------------------
37-349 | 16 × 1 3/8 NL
-------------|-----------------------------------------------------
37-387 | 18 × 1 3/8
-------------|-----------------------------------------------------
37-390 | 450 A Comfort
| 450 A 1/2 Balloon
-------------|-----------------------------------------------------
37-400 | 18 × 1 3/8
-------------|-----------------------------------------------------
37-438 | 20 × 1 3/8NL
-------------|-----------------------------------------------------
37-440 | 500 A Comfort
| 500 A 1/2 Balloon
-------------|-----------------------------------------------------
37-451 | 20 × 1 3/8
-------------|-----------------------------------------------------
37-489 | 22 × 1 3/8 NL
-------------|-----------------------------------------------------
37-490 | 550 A Comfort
| 550 A 1/2 Balloon
-------------|-----------------------------------------------------
37-498 | 22 × 1 3/8 × 1 1/4 NL
-------------|-----------------------------------------------------
37-501 | 22 × 1 3/8
-------------|-----------------------------------------------------
37-540 | 24 × 1 3/8
-------------|-----------------------------------------------------
37-541 | 600 A Comfort
| 600 A 1/2 Balloon
| 600 × 35 A
-------------|-----------------------------------------------------
37-565 | 25 × 1 3/8
-------------|-----------------------------------------------------
37-584 | 26 × 1 1/2 × 1 3/8
| 26 × 1 3/8 × 1 1/2
-------------|-----------------------------------------------------
37-590 | 26 × 1 3/8 650 A
| 650 × 35 A
-------------|-----------------------------------------------------
37-622 | 28 × 1 5/8 × 1 3/8 700 × 35 C
| 28 × 1 3/8 1 5/8
-------------|-----------------------------------------------------
37-642 | 28 × 1 3/8 700 × 35 A
-------------|-----------------------------------------------------
40-279 | 14 × 1 1/2 350 × 38 B
-------------|-----------------------------------------------------
40-288 | 14 × 1 1/2 NL 350 × 38
-------------|-----------------------------------------------------
40-330 | 16 × 1 1/2 400 × 38 B
-------------|-----------------------------------------------------
40-432 | 20 × 1 1/2
-------------|-----------------------------------------------------
40-440 | 20 × 1 1/2 NL 500 × 38
-------------|-----------------------------------------------------
40-534 | 24 × 1 1/2
-------------|-----------------------------------------------------
40-540 | 24 × 1 3/8 × 1 1/2
| 24 × 1 1/2 × 1 3/8
-------------|-----------------------------------------------------
40-571 | 26 × 1 1/2 C.S.
| 26 × 1 5/8 × 1 1/2NL
-------------|-----------------------------------------------------
40-584 | 26 × 1 1/2 650 × 35 B
| 650 × 38 B
-------------|-----------------------------------------------------
40-590 | 26 × 1 3/8 × 1 1/2 NL
-------------|-----------------------------------------------------
40-622 | 28 × 1 5/8 × 1 1/2 NL 700 × 38 C
-------------|-----------------------------------------------------
40-635 | 28 × 1 1/2 × 1 3/8 700 B Estándar
| 28 × 1 1/2 700 × 35 B
| 700 × 38 B
-------------|-----------------------------------------------------
44-194 | 10 × 1 5/8
-------------|-----------------------------------------------------
44-288 | 14 × 1 3/8 × 1 5/8 350 A
| 350 × 42A
-------------|-----------------------------------------------------
44-340 | 16 × 1 5/8
-------------|-----------------------------------------------------
44-428 | 20 × 1 5/8 × 1 1/2
-------------|-----------------------------------------------------
44-484 | 22 × 1 5/8 × 1 1/2
-------------|-----------------------------------------------------
44-531 | 24 × 1 5/8 × 1 1/2
-------------|-----------------------------------------------------
44-584 | 26 × 1 1/2 × 1 5/8 650 B Semi-comfort
| 26 × 1 5/8 × 1 1/2 650 B 1/2 Balloon
| 26 × 1 3/4 × 1 1/2 650 × 42B
-------------|-----------------------------------------------------
44-622 | 28 × 1 5/8 700 × 42 C
-------------|-----------------------------------------------------
44-635 | 28 × 1 5/8 × 1 1/2
| 28 × 1 1/2 × 1 5/8
-------------|-----------------------------------------------------
47-203 | 12 1/2 × 1.75 × 2 1/4
-------------|-----------------------------------------------------
47-222 | 11 × 1 3/4
-------------|-----------------------------------------------------
47-305 | 16 × 1.75 × 2
-------------|-----------------------------------------------------
47-317 | 16 × 1 3/4
-------------|-----------------------------------------------------
47-355 | 18 × 1.75 × 2
-------------|-----------------------------------------------------
47-406 | 20 × 1.75 × 2
| 20 × 1.75
-------------|-----------------------------------------------------
47-419 | 20 × 1 3/4
-------------|-----------------------------------------------------
47-501 T | 24 × 1 3/4 R 600 × 45 C
-------------|-----------------------------------------------------
47-507 | 24 × 1.75 × 2
| 24 × 1.75
-------------|-----------------------------------------------------
47-520 | 24 × 1 3/4
-------------|-----------------------------------------------------
47-559 | 26 × 1.75 × 2
| 26 × 1.75
-------------|-----------------------------------------------------
47-571 | 26 × 1 3/4 650 × 45 C
| 26 × 1 5/8 650 C S.C.
-------------|-----------------------------------------------------
45-584 | 26 × 1.75 × 1 1/2 650 × 45 B
| 26 × 1 1/2 × 1 3/4
-------------|-----------------------------------------------------
47-622 | 28 × 1 3/4 700 × 45 C
| 28 × 1.75
| 28 × 15/8 1 3/4
-------------|-----------------------------------------------------
54-298 | 14 × 2 × 1 3/4
-------------|-----------------------------------------------------
54-305 | 16 × 2
-------------|-----------------------------------------------------
54-400 | 20 × 2 × 1 3/4
| 20 × 2 F 4 J
-------------|-----------------------------------------------------
54-406 | 20 × 2.00
-------------|-----------------------------------------------------
54-428 | 20 × 2
-------------|-----------------------------------------------------
54-559 | 26 × 2.00
-------------|-----------------------------------------------------
54-571 | 26 × 1 3/4 × 2
| 26 × 2 × 1 3/4
| 26 × 2 650 × 50 C
-------------|-----------------------------------------------------
54-584 | 26 × 2 × 2 1/2
| 26 × 1 1/2 × 2
-------------|-----------------------------------------------------
54-609 | 28 × 2
-------------|-----------------------------------------------------
57-239 | 300 × 55 A
-------------|-----------------------------------------------------
57-251 T | 315 × 55
-------------|-----------------------------------------------------
57-305 | 16 × 2.125
| 16 × 2.125 × 2
-------------|-----------------------------------------------------
57-390 | 450 × 55 A
-------------|-----------------------------------------------------
57-406 | 20 × 2.125
| 20 × 2.125 × 2
-------------|-----------------------------------------------------
57-507 | 24 × 2.125
| 24 × 2.125 × 2
-------------|-----------------------------------------------------
57-559 | 26 × 2.125
| 26 × 2.125 × 2
-------------|-----------------------------------------------------
62-203 | 12 1/2 × 2 1/4 320 × 57
-------------|-----------------------------------------------------
62-305 | 16 × 2.125
-------------|-----------------------------------------------------
67-203 | 13 × 2 1/2 330 × 65
-------------|-----------------------------------------------------
67-381 | 20 × 2 1/2
-------------|-----------------------------------------------------
Se permite la inclusión de los marcajes antiguos a continuación del ISO 5775 entre paréntesis.
[editar] Llantas
La norma ISO 5775-2 define los códigos de las llantas, y distingue entre:
- LLantas de pared recta (SS)
- Llantas de tipo Crotchet (C)
- Llantas Hooked-bead (HB)
Las llantas se designan por su diámetro nominal y su anchura nominal separados por un aspa (×). Ambas se miden en milímetros. Las llantas de tipo SS o HB llevan estas siglas delante del nombre mientras que las de tipo C la llevan al final. Ejemplos:
- SS 400×20, HB 422×25, 620×13C
La anchura nominal de una llanta es la anchura interior tal y como se mide con un calibre.
La anchuras estadarizadas pora las de pared recta (SS) son:
- 18, 20, 22, 24, 27, 30.5
para las de tipo crotchet (C):
- 13C, 15C, 16C, 17C, 19C, 21C, 23C, 25C
Y para las de hooked-bead (HB):
- 20, 25, 27
Los diámetros estandarizados para las llantas de tipo SS y C son:
- 194, 203, 222, 239, 248, 251, 279, 288, 298, 305, 317, 330, 337, 340, 349, 355, 357, 369, 381, 387, 390, 400, 406, 419, 428, 432, 438, 440, 451, 484, 489, 490, 498, 501, 507, 520, 531, 534, 540, 541, 547, 559, 565, 571, 584, 590, 597, 609, 622, 630, 635, 642
Los diámetros estadarizados para las llantas HB son:
- 270, 321, 372, 422, 459, 473, 510, 524, 560, 575, 611
