{"id":259,"date":"2026-07-31T07:02:43","date_gmt":"2026-07-31T07:02:43","guid":{"rendered":"https:\/\/5speedtransmission.com\/?post_type=product&p=259"},"modified":"2026-07-31T07:02:43","modified_gmt":"2026-07-31T07:02:43","slug":"finished-bore-sprockets-asian-standard","status":"publish","type":"product","link":"https:\/\/5speedtransmission.com\/es\/producto\/finished-bore-sprockets-asian-standard\/","title":{"rendered":"Pi\u00f1ones con orificio acabado seg\u00fan el est\u00e1ndar asi\u00e1tico"},"content":{"rendered":"
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<\/p>\n

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25B \u2013 120B<\/p>\n

Rango de tama\u00f1o de cadena<\/p>\n<\/div>\n

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FBN \/ FBK<\/p>\n

Tipo FBN (B) y FBK (B+F)<\/p>\n<\/div>\n

\n

JIS B1801<\/p>\n

Est\u00e1ndar asi\u00e1tico<\/p>\n<\/div>\n

\n

ISO 9001<\/p>\n

Calidad certificada<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

Pi\u00f1ones con orificio acabado seg\u00fan el est\u00e1ndar asi\u00e1tico: descripci\u00f3n general del producto<\/h2>\n
\n
\n

La gama de di\u00e1metros interiores terminados se produce en dos tipos de buje: FBN (Tipo B)<\/strong> \u2014 Un cubo recto con orificio, chavetero y tornillo de fijaci\u00f3n, con el chavetero centrado en el eje del diente (no entre dientes como en otras normas). La disposici\u00f3n del chavetero en el centro del diente permite que la chaveta sea visible desde arriba cuando la rueda dentada est\u00e1 montada en el eje, lo que facilita las comprobaciones de alineaci\u00f3n. FBK (Tipo B+F)<\/strong> \u2014 el mismo cubo con una brida adicional, utilizado para aplicaciones que requieren retenci\u00f3n lateral positiva o fijaci\u00f3n a un hombro de eje.<\/p>\n

The range covers chain sizes 25B (3\/16″ pitch) through 120B (1\u00bd” pitch), in simplex. Material is C45 carbon steel with induction-hardened teeth for sizes 35B and above. For 25B light-duty chain, the sprocket is un-hardened plain C45. Stainless steel (SUS304) variants are available for 25B (food and pharmaceutical) \u2014 designated SUSFBP. For the Asian stock bore range (NK type) see our Pi\u00f1ones de cilindros de acciones asi\u00e1ticas<\/a>. Explorar el categor\u00eda de pi\u00f1ones completos<\/a>.<\/p>\n

 <\/p>\n<\/div>\n

\"Pi\u00f1ones
\n<\/p>\n
\n

\ud83c\udf0f Asi\u00e1tico vs ANSI vs Europeo: mismo tono, diferente cadena<\/p>\n

Para el mismo paso (por ejemplo, \u00bd\u2033 \/ 12,7 mm), los tres est\u00e1ndares tienen di\u00e1metros de rodillo diferentes:<\/p>\n\n\n\n\n\n\n
Paso \u00bd\u2033<\/th>\nRodillo \u00d8<\/th>\nEst\u00e1ndar<\/th>\n<\/tr>\n
40B (asi\u00e1tico\/JIS)<\/td>\n7,92 mm<\/td>\nJIS B1801<\/td>\n<\/tr>\n
#40 (estadounidense)<\/td>\n7,95 mm<\/td>\nANSI B29.1<\/td>\n<\/tr>\n
08B (europeo)<\/td>\n8,51 mm<\/td>\nDIN 8187<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u26a0\ufe0f No mezcle est\u00e1ndares de cadena: el rodillo DIN 08B, de mayor tama\u00f1o, no se ajustar\u00e1 correctamente a los perfiles de dientes asi\u00e1ticos o ANSI.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Ubicaci\u00f3n de la llave: diferencia con el est\u00e1ndar asi\u00e1tico<\/h2>\n

En los pi\u00f1ones est\u00e1ndar asi\u00e1ticos, la chaveta est\u00e1 mecanizada en el eje central del diente, alineada con el punto medio del mismo, no entre dientes. Esta convenci\u00f3n difiere de la de los pi\u00f1ones europeos DIN 8187 y estadounidenses ANSI B29.1, donde la chaveta suele estar ubicada entre dientes. Esta diferencia es importante por dos razones:<\/p>\n

\n
\n

\u2714 Confirmaci\u00f3n visual de la instalaci\u00f3n<\/p>\n

Con la chaveta alineada con el eje del diente, el t\u00e9cnico puede confirmar la correcta posici\u00f3n de instalaci\u00f3n observando la parte superior del pi\u00f1\u00f3n instalado: el diente situado justo encima de la chaveta debe estar centrado sobre la marca de la chaveta en el eje. Esta comprobaci\u00f3n visual resulta especialmente \u00fatil durante la instalaci\u00f3n de pi\u00f1ones grandes, donde medir su posici\u00f3n es complicado.<\/p>\n<\/div>\n

\n

\u26a0\ufe0f No sustituir el pi\u00f1\u00f3n europeo\/ANSI<\/p>\n

Un pi\u00f1\u00f3n europeo o ANSI no puede sustituir a un pi\u00f1\u00f3n est\u00e1ndar asi\u00e1tico en una cadena asi\u00e1tica, incluso si el paso y el di\u00e1metro interior son iguales. El perfil del diente (radio de la curva de asiento, ancho y \u00e1ngulo del diente) difiere entre los est\u00e1ndares. El uso de una cadena y un pi\u00f1\u00f3n incompatibles provoca un mal acoplamiento de los rodillos, un desgaste acelerado y la rotura prematura del pi\u00f1\u00f3n a las pocas semanas de su instalaci\u00f3n.<\/p>\n<\/div>\n

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\ud83d\udcd0 Est\u00e1ndar de chavetero JIS B1301<\/p>\n

Las dimensiones de la chaveta cumplen con la norma JIS B1301 (revisada en 1976), el est\u00e1ndar japon\u00e9s para chavetas paralelas y chaveteras en di\u00e1metros m\u00e9tricos. Sus dimensiones son similares a las de la norma DIN 6885, pero utiliza proporciones de profundidad ligeramente diferentes para di\u00e1metros peque\u00f1os (inferiores a 22 mm). Utilice siempre una chaveta JIS B1301 o DIN 6885 en pi\u00f1ones est\u00e1ndar asi\u00e1ticos; no utilice chavetas ASME B17.1 en pulgadas, ya que presentan relaciones de anchura a profundidad diferentes.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Llave:<\/strong> Z = dientes | De = di\u00e1metro de la punta (mm) | Dp = di\u00e1metro del c\u00edrculo primitivo (mm) | BD = opciones de di\u00e1metro del orificio (mm) | BL = longitud del orificio (mm) | a = ancho de la chaveta (mm) | FBN = cubo tipo B; FBK = tipo B con brida; SUSFBP = acero inoxidable SUS304Especificaciones del pi\u00f1\u00f3n con orificio acabado: de 35B a 100B<\/span><\/p>\n<\/div>\n

 <\/p>\n

35B | Paso 9,525 mm | Rodillo \u00d8 5,08 mm | Ancho interior 4,78 mm | Templado C45<\/h3>\n
\n\n\n\n\n\n\n\n\n\n
Z<\/th>\nDe (mm)<\/th>\nDp (mm)<\/th>\nOpciones BD (mm)<\/th>\nBL (mm)<\/th>\nuna ranura para chaveta (mm)<\/th>\n<\/tr>\n<\/thead>\n
9<\/td>\n32<\/td>\n27.85<\/td>\n*21.5 (piloto)<\/td>\n20<\/td>\n6<\/td>\n<\/tr>\n
11<\/td>\n38<\/td>\n33.81<\/td>\n*27 (piloto)<\/td>\n20<\/td>\n6<\/td>\n<\/tr>\n
13<\/td>\n44<\/td>\n39.80<\/td>\n10, 12, 14, 15, 16<\/td>\n20<\/td>\n4\u20135<\/td>\n<\/tr>\n
17<\/td>\n56<\/td>\n51.83<\/td>\n10, 12, 14, 15, 16<\/td>\n20<\/td>\n5<\/td>\n<\/tr>\n
25<\/td>\n80<\/td>\n76.00<\/td>\n14, 15, 16<\/td>\n20<\/td>\n5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

40B | Paso 12,70 mm | Rodillo \u00d8 7,92 mm | Ancho interior 7,85 mm | Templado C45<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n
Z<\/th>\nDe (mm)<\/th>\nDp (mm)<\/th>\nOpciones BD (mm)<\/th>\nBL (mm)<\/th>\nuna ranura para chaveta (mm)<\/th>\n<\/tr>\n<\/thead>\n
9<\/td>\n42<\/td>\n37.13<\/td>\n*28 (piloto)<\/td>\n22<\/td>\n5<\/td>\n<\/tr>\n
12<\/td>\n55<\/td>\n49.07<\/td>\n10, 12, 14, 15, 16, 17<\/td>\n22<\/td>\n5<\/td>\n<\/tr>\n
15<\/td>\n67<\/td>\n61.09<\/td>\n12, 14, 15, 16, 17, 18<\/td>\n22<\/td>\n5<\/td>\n<\/tr>\n
17<\/td>\n75<\/td>\n69.11<\/td>\n12, 14, 15, 16, 17, 18, 19, 20<\/td>\n22<\/td>\n5<\/td>\n<\/tr>\n
20<\/td>\n88<\/td>\n81.19<\/td>\n14, 15, 16, 17, 18, 19, 20<\/td>\n22<\/td>\n5<\/td>\n<\/tr>\n
25<\/td>\n108<\/td>\n101.33<\/td>\n14, 15, 17, 18, 19, 20<\/td>\n22<\/td>\n6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

60B | Paso 19,05 mm | Rodillo \u00d8 11,91 mm | Ancho interior 12,07 mm | Templado C45<\/h3>\n
\n\n\n\n\n\n\n\n\n\n
Z<\/th>\nDe (mm)<\/th>\nDp (mm)<\/th>\nOpciones BD (mm)<\/th>\nBL (mm)<\/th>\nuna ranura para chaveta (mm)<\/th>\n<\/tr>\n<\/thead>\n
9<\/td>\n63<\/td>\n58.10<\/td>\n32<\/td>\n35<\/td>\n8<\/td>\n<\/tr>\n
11<\/td>\n76<\/td>\n71.56<\/td>\n30, 32, 35<\/td>\n35<\/td>\n8<\/td>\n<\/tr>\n
13<\/td>\n89<\/td>\n84.92<\/td>\n30, 32, 35, 38, 40<\/td>\n35<\/td>\n10<\/td>\n<\/tr>\n
17<\/td>\n114<\/td>\n109.97<\/td>\n32, 35, 38, 40, 42, 45<\/td>\n35<\/td>\n10<\/td>\n<\/tr>\n
21<\/td>\n139<\/td>\n135.64<\/td>\n35, 38, 40, 42, 45, 48<\/td>\n40<\/td>\n12<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

80B | Paso 25,40 mm | Di\u00e1metro del rodillo 15,88 mm | Ancho interior 15,88 mm | Templado C45<\/h3>\n
\n\n\n\n\n\n\n\n\n
Z<\/th>\nDe (mm)<\/th>\nDp (mm)<\/th>\nOpciones BD (mm)<\/th>\nBL (mm)<\/th>\nuna ranura para chaveta (mm)<\/th>\n<\/tr>\n<\/thead>\n
9<\/td>\n84<\/td>\n77.52<\/td>\n44 (piloto)<\/td>\n42<\/td>\n12<\/td>\n<\/tr>\n
13<\/td>\n117<\/td>\n113.27<\/td>\n40, 42, 45, 48<\/td>\n42<\/td>\n12<\/td>\n<\/tr>\n
17<\/td>\n151<\/td>\n146.28<\/td>\n42, 45, 48, 50<\/td>\n42<\/td>\n14<\/td>\n<\/tr>\n
21<\/td>\n186<\/td>\n180.75<\/td>\n45, 48, 50, 55<\/td>\n50<\/td>\n14<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* = orificio piloto (sin chavetero). Disponemos de la gama completa de orificios y variantes de acero inoxidable SUSFBP25B; cont\u00e1ctenos. Tambi\u00e9n disponibles en 50B, 100B y 120B. Al realizar el pedido, especifique el tama\u00f1o de la cadena, el n\u00famero de dientes, el tipo (FBN o FBK) y el di\u00e1metro del orificio en mm.<\/p>\n

<\/p>\n

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\"\"<\/p>\n

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Caracter\u00edsticas t\u00e9cnicas<\/h2>\n

\"Pi\u00f1ones<\/p>\n

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Perfil del diente JIS B1801<\/h3>\n

El perfil del diente cumple con la norma JIS B1801, necesaria para un acoplamiento correcto con la cadena de rodillos est\u00e1ndar asi\u00e1tica. El radio de la curva de asiento y el ancho del diente difieren de las normas DIN 8187 y ANSI B29.1 porque el di\u00e1metro del rodillo est\u00e1ndar asi\u00e1tico es ligeramente diferente al de ambas. El uso de cadenas asi\u00e1ticas en pi\u00f1ones europeos o americanos (o viceversa) provoca un asentamiento incorrecto del rodillo y un desgaste prematuro, incluso cuando el paso es id\u00e9ntico. Cadena de rodillos est\u00e1ndar asi\u00e1tica JIS B1801<\/a>.<\/p>\n<\/div>\n

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C45 con dientes endurecidos \u2014 35B y superiores<\/h3>\n

Todos los pi\u00f1ones FBN y FBK de 35B a 120B son de acero al carbono C45 con flancos dentados endurecidos por inducci\u00f3n a 52\u201358 HRC. El orificio se mecaniza antes del ciclo de tratamiento t\u00e9rmico y se verifica dimensionalmente despu\u00e9s del endurecimiento. Los pi\u00f1ones 25B son para cargas m\u00e1s ligeras: acero C45 liso sin endurecimiento dentado, adecuados para las cargas ligeras de las aplicaciones de transmisi\u00f3n 25B. Las variantes de acero inoxidable SUS304 (prefijo SUSFBP) solo tienen orificio liso y no est\u00e1n endurecidas por el material.<\/p>\n<\/div>\n

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Tipo de brida FBK \u2014 Retenci\u00f3n lateral<\/h3>\n

El tipo FBK a\u00f1ade una cara de brida al cubo, proporcionando una superficie de apoyo contra el hombro o collar\u00edn del eje. Esto es necesario en aplicaciones donde la rueda dentada debe mantenerse axialmente en el eje mediante su propia geometr\u00eda, en lugar de depender completamente del tornillo de fijaci\u00f3n. El FBK es el tipo est\u00e1ndar para transmisiones por cadena en maquinaria agr\u00edcola y equipos de manipulaci\u00f3n de materiales japoneses, donde la posici\u00f3n de la rueda dentada se determina mediante un escal\u00f3n en el eje, en lugar de solo mediante un tornillo de fijaci\u00f3n.<\/p>\n<\/div>\n

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Sistemas de accionamiento Ever-Power de Corea para fabricantes de equipos originales asi\u00e1ticos.<\/h3>\n

La maquinaria industrial coreana utiliza est\u00e1ndares de cadena basados \u200b\u200ben JIS para todos sus sistemas de transmisi\u00f3n. Los pi\u00f1ones con orificio acabado est\u00e1ndar asi\u00e1tico de Korea Ever-Power son el reemplazo adecuado para los sistemas de transmisi\u00f3n de equipos fabricados en Corea en todos los sectores: maquinaria de construcci\u00f3n, maquinaria agr\u00edcola, transportadores industriales y maquinaria textil. Presentan la misma geometr\u00eda de buje, di\u00e1metros de orificio y dimensiones de chavetero que las especificaciones originales del fabricante coreano.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

Cadena a juego y productos relacionados<\/h2>\n
\n

\"Cadena<\/p>\n

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Cadena de rodillos est\u00e1ndar asi\u00e1tica compatible<\/p>\n

Utilice una cadena de rodillos est\u00e1ndar asi\u00e1tica JIS B1801 para su pi\u00f1\u00f3n FBN\/FBK, del mismo n\u00famero (35B, 40B, 60B, 80B, etc.). Disponibles en versiones est\u00e1ndar, serie H, autolubricantes y de acero inoxidable SUS304. Nunca utilice cadenas europeas DIN 8187 ni ANSI B29.1 en pi\u00f1ones asi\u00e1ticos.<\/p>\n

Ver cadenas de transmisi\u00f3n \u2192<\/a><\/p>\n<\/div>\n<\/div>\n

\n
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\"Cadenas<\/p>\n

Cadenas de hojas<\/a><\/h3>\n

Cadenas de hojas de las series BL y LH para m\u00e1stiles de carretillas elevadoras, accionamientos de puertas industriales y mecanismos de elevaci\u00f3n. Capacidades de tracci\u00f3n desde 11 kN hasta m\u00e1s de 1600 kN.<\/p>\n

Ver cadenas de hojas<\/a><\/p>\n<\/div>\n

\n

\"Cadenas<\/p>\n

Cadenas de ingenier\u00eda<\/a><\/h3>\n

Cadenas de acero soldado, hierro fundido y forjadas para el transporte industrial de alta resistencia en acer\u00edas, plantas de cemento, miner\u00eda y procesamiento qu\u00edmico.<\/p>\n

Ver cadenas de ingenier\u00eda<\/a><\/p>\n<\/div>\n

\n

\"Cadena<\/p>\n

Cadenas de acero inoxidable<\/a><\/h3>\n

Cadenas de rodillos de acero inoxidable SUS304 y SUS316L para entornos alimentarios, farmac\u00e9uticos y qu\u00edmicos. Aptas para lavado a presi\u00f3n, altas temperaturas y medios corrosivos.<\/p>\n

Ver cadenas de acero inoxidable<\/a><\/p>\n<\/div>\n

\n

\"cadena-agr\u00edcola-1\"<\/p>\n

Cadenas agr\u00edcolas<\/a><\/h3>\n

Series CA, CC y de cadenas para ma\u00edz, destinadas a cosechadoras, recolectoras de algod\u00f3n, empacadoras y equipos de esparcimiento. Norma ISO 487 \/ ASME B29.100.<\/p>\n

Ver cadenas agr\u00edcolas<\/a><\/p>\n<\/div>\n<\/div>\n

<\/p>\n

\n

\"\"<\/p>\n

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Solicite un presupuesto: pi\u00f1ones con orificio acabado seg\u00fan el est\u00e1ndar asi\u00e1tico.<\/h3>\n

Especifique el tama\u00f1o de la cadena (por ejemplo, 60B), el n\u00famero de dientes, el tipo (FBN o FBK) y el di\u00e1metro del orificio en mm. Disponible en acero inoxidable SUSFBP para 25B. Respuesta en un plazo de un d\u00eda laborable.<\/p>\n

Obt\u00e9n un presupuesto ahora<\/a>
\nTodos los productos de pi\u00f1ones<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

Los pi\u00f1ones con orificio acabado est\u00e1ndar asi\u00e1tico de Korea Ever-Power cumplen con la norma JIS B1801, la norma industrial japonesa para pi\u00f1ones de cadena de rodillos, que sirve de base para la norma asi\u00e1tica utilizada en Jap\u00f3n, Corea del Sur, Taiw\u00e1n, China y el sudeste asi\u00e1tico. Las dimensiones de la cadena JIS difieren de las normas ANSI B29.1 y DIN 8187 en di\u00e1metro de rodillo y anchura interior, lo que requiere un perfil de diente espec\u00edfico. Las cadenas y pi\u00f1ones est\u00e1ndar asi\u00e1ticos siempre deben ajustarse a la misma norma.<\/p>","protected":false},"featured_media":236,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"

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25B \u2013 120B<\/p>\r\n

Chain Size Range<\/p>\r\n\r\n<\/div>\r\n

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FBN \/ FBK<\/p>\r\n

Type FBN (B) & FBK (B+F)<\/p>\r\n\r\n<\/div>\r\n

\r\n

JIS B1801<\/p>\r\n

Asian Standard<\/p>\r\n\r\n<\/div>\r\n

\r\n

ISO 9001<\/p>\r\n

Certified Quality<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n\r\n

Asian Standard Finished Bore Sprockets \u2013 Product Overview<\/h2>\r\n
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The finished bore range is produced in two hub types: FBN (Type B)<\/strong> \u2014 a straight hub with a bore, keyway and setscrew, supplied with the keyway centred on the tooth centreline (not between teeth as in some other standards). The keyway-on-tooth-centre arrangement allows the key to be visible from above when the sprocket is mounted on the shaft, making alignment checks easier. FBK (Type B+F)<\/strong> \u2014 the same hub with an additional flange, used for applications requiring positive lateral retention or attachment to a shaft shoulder.<\/p>\r\n

The range covers chain sizes 25B (3\/16\" pitch) through 120B (1\u00bd\" pitch), in simplex. Material is C45 carbon steel with induction-hardened teeth for sizes 35B and above. For 25B light-duty chain, the sprocket is un-hardened plain C45. Stainless steel (SUS304) variants are available for 25B (food and pharmaceutical) \u2014 designated SUSFBP. For the Asian stock bore range (NK type) see our Asian stock bore sprockets<\/a>. Browse the full sprocket category<\/a>.<\/p>\r\n\r\n<\/div>\r\n

\r\n\r\n\"Korea\r\n\r\n
\r\n

\ud83c\udf0f Asian vs ANSI vs European \u2014 same pitch, different chain<\/p>\r\n

For the same pitch (e.g. \u00bd\u2033 \/ 12.7 mm), the three standards have different roller diameters:<\/p>\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Pitch \u00bd\u2033<\/th>\r\nRoller \u00d8<\/th>\r\nStandard<\/th>\r\n<\/tr>\r\n
40B (Asian\/JIS)<\/td>\r\n7.92 mm<\/td>\r\nJIS B1801<\/td>\r\n<\/tr>\r\n
#40 (American)<\/td>\r\n7.95 mm<\/td>\r\nANSI B29.1<\/td>\r\n<\/tr>\r\n
08B (European)<\/td>\r\n8.51 mm<\/td>\r\nDIN 8187<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n

\u26a0\ufe0f Do not mix chain standards \u2014 the larger DIN 08B roller will not seat correctly on Asian or ANSI tooth profiles.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n\r\n

\r\n

Keyway Location \u2014 Asian Standard Difference<\/h2>\r\n

Asian standard sprockets have the keyway machined on the tooth centreline \u2014 aligned with the midpoint of a tooth, not between teeth. This is a different convention from European DIN 8187 and American ANSI B29.1 sprockets, where the keyway is typically positioned between teeth. The difference matters for two reasons:<\/p>\r\n\r\n

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\u2714 Visual Installation Confirmation<\/p>\r\n

With the keyway on the tooth centreline, the engineer can confirm correct installation position by looking at the top of the installed sprocket \u2014 the tooth directly above the key should be centred over the keyway mark on the shaft. This visual check is particularly useful during installation of large sprockets where gauging the sprocket position is difficult.<\/p>\r\n\r\n<\/div>\r\n

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\u26a0\ufe0f Do Not Substitute European\/ANSI Sprocket<\/p>\r\n

A European or ANSI sprocket cannot be substituted for an Asian standard sprocket on Asian chain, even if the pitch and bore are the same. The tooth profile \u2014 seating curve radius, tooth width and tooth angle \u2014 differs between standards. Running mismatched chain and sprocket causes poor roller engagement, accelerated wear and premature sprocket failure within weeks of installation.<\/p>\r\n\r\n<\/div>\r\n

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\ud83d\udcd0 JIS B1301 Keyway Standard<\/p>\r\n

Keyway dimensions conform to JIS B1301 (revised 1976) \u2014 the Japanese standard for parallel keys and keyways in metric bore sizes. This is dimensionally close to DIN 6885 but uses slightly different depth proportions for small bore sizes (below 22 mm). Always use a JIS B1301 or DIN 6885 key in Asian standard sprockets \u2014 do not use ASME B17.1 inch keys, which have different width-to-depth ratios.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n\r\n

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Key:<\/strong> Z = teeth \u00a0|\u00a0 De = tip diameter (mm) \u00a0|\u00a0 Dp = pitch circle diameter (mm) \u00a0|\u00a0 BD = bore diameter options (mm) \u00a0|\u00a0 BL = bore length (mm) \u00a0|\u00a0 a = keyway width (mm) \u00a0|\u00a0 FBN = Type B hub; FBK = Type B with flange; SUSFBP = SUS304 stainlessFinished Bore Sprocket Specifications \u2014 35B through 100B<\/span><\/p>\r\n\r\n<\/div>\r\n

35B \u00a0|\u00a0 Pitch 9.525 mm \u00a0|\u00a0 Roller \u00d8 5.08 mm \u00a0|\u00a0 Inner width 4.78 mm \u00a0|\u00a0 C45 hardened<\/h3>\r\n
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Z<\/th>\r\nDe (mm)<\/th>\r\nDp (mm)<\/th>\r\nBD options (mm)<\/th>\r\nBL (mm)<\/th>\r\na keyway (mm)<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
9<\/td>\r\n32<\/td>\r\n27.85<\/td>\r\n*21.5 (pilot)<\/td>\r\n20<\/td>\r\n6<\/td>\r\n<\/tr>\r\n
11<\/td>\r\n38<\/td>\r\n33.81<\/td>\r\n*27 (pilot)<\/td>\r\n20<\/td>\r\n6<\/td>\r\n<\/tr>\r\n
13<\/td>\r\n44<\/td>\r\n39.80<\/td>\r\n10, 12, 14, 15, 16<\/td>\r\n20<\/td>\r\n4\u20135<\/td>\r\n<\/tr>\r\n
17<\/td>\r\n56<\/td>\r\n51.83<\/td>\r\n10, 12, 14, 15, 16<\/td>\r\n20<\/td>\r\n5<\/td>\r\n<\/tr>\r\n
25<\/td>\r\n80<\/td>\r\n76.00<\/td>\r\n14, 15, 16<\/td>\r\n20<\/td>\r\n5<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n

40B \u00a0|\u00a0 Pitch 12.70 mm \u00a0|\u00a0 Roller \u00d8 7.92 mm \u00a0|\u00a0 Inner width 7.85 mm \u00a0|\u00a0 C45 hardened<\/h3>\r\n
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Z<\/th>\r\nDe (mm)<\/th>\r\nDp (mm)<\/th>\r\nBD options (mm)<\/th>\r\nBL (mm)<\/th>\r\na keyway (mm)<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
9<\/td>\r\n42<\/td>\r\n37.13<\/td>\r\n*28 (pilot)<\/td>\r\n22<\/td>\r\n5<\/td>\r\n<\/tr>\r\n
12<\/td>\r\n55<\/td>\r\n49.07<\/td>\r\n10, 12, 14, 15, 16, 17<\/td>\r\n22<\/td>\r\n5<\/td>\r\n<\/tr>\r\n
15<\/td>\r\n67<\/td>\r\n61.09<\/td>\r\n12, 14, 15, 16, 17, 18<\/td>\r\n22<\/td>\r\n5<\/td>\r\n<\/tr>\r\n
17<\/td>\r\n75<\/td>\r\n69.11<\/td>\r\n12, 14, 15, 16, 17, 18, 19, 20<\/td>\r\n22<\/td>\r\n5<\/td>\r\n<\/tr>\r\n
20<\/td>\r\n88<\/td>\r\n81.19<\/td>\r\n14, 15, 16, 17, 18, 19, 20<\/td>\r\n22<\/td>\r\n5<\/td>\r\n<\/tr>\r\n
25<\/td>\r\n108<\/td>\r\n101.33<\/td>\r\n14, 15, 17, 18, 19, 20<\/td>\r\n22<\/td>\r\n6<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n

60B \u00a0|\u00a0 Pitch 19.05 mm \u00a0|\u00a0 Roller \u00d8 11.91 mm \u00a0|\u00a0 Inner width 12.07 mm \u00a0|\u00a0 C45 hardened<\/h3>\r\n
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Z<\/th>\r\nDe (mm)<\/th>\r\nDp (mm)<\/th>\r\nBD options (mm)<\/th>\r\nBL (mm)<\/th>\r\na keyway (mm)<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
9<\/td>\r\n63<\/td>\r\n58.10<\/td>\r\n32<\/td>\r\n35<\/td>\r\n8<\/td>\r\n<\/tr>\r\n
11<\/td>\r\n76<\/td>\r\n71.56<\/td>\r\n30, 32, 35<\/td>\r\n35<\/td>\r\n8<\/td>\r\n<\/tr>\r\n
13<\/td>\r\n89<\/td>\r\n84.92<\/td>\r\n30, 32, 35, 38, 40<\/td>\r\n35<\/td>\r\n10<\/td>\r\n<\/tr>\r\n
17<\/td>\r\n114<\/td>\r\n109.97<\/td>\r\n32, 35, 38, 40, 42, 45<\/td>\r\n35<\/td>\r\n10<\/td>\r\n<\/tr>\r\n
21<\/td>\r\n139<\/td>\r\n135.64<\/td>\r\n35, 38, 40, 42, 45, 48<\/td>\r\n40<\/td>\r\n12<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n

80B \u00a0|\u00a0 Pitch 25.40 mm \u00a0|\u00a0 Roller \u00d8 15.88 mm \u00a0|\u00a0 Inner width 15.88 mm \u00a0|\u00a0 C45 hardened<\/h3>\r\n
\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Z<\/th>\r\nDe (mm)<\/th>\r\nDp (mm)<\/th>\r\nBD options (mm)<\/th>\r\nBL (mm)<\/th>\r\na keyway (mm)<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
9<\/td>\r\n84<\/td>\r\n77.52<\/td>\r\n44 (pilot)<\/td>\r\n42<\/td>\r\n12<\/td>\r\n<\/tr>\r\n
13<\/td>\r\n117<\/td>\r\n113.27<\/td>\r\n40, 42, 45, 48<\/td>\r\n42<\/td>\r\n12<\/td>\r\n<\/tr>\r\n
17<\/td>\r\n151<\/td>\r\n146.28<\/td>\r\n42, 45, 48, 50<\/td>\r\n42<\/td>\r\n14<\/td>\r\n<\/tr>\r\n
21<\/td>\r\n186<\/td>\r\n180.75<\/td>\r\n45, 48, 50, 55<\/td>\r\n50<\/td>\r\n14<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n

* = pilot bore (no keyway). Full bore range and stainless SUSFBP25B variants available \u2014 contact us. 50B, 100B and 120B also available. Specify chain size, tooth count, type (FBN or FBK) and bore diameter mm when ordering.<\/p>\r\n\r\n

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Technical Features<\/h2>\r\n\"Finished-Bore-Sprockets-1\"\r\n
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JIS B1801 Tooth Profile<\/h3>\r\n

The tooth profile conforms to JIS B1801 \u2014 required for correct engagement with Asian standard roller chain. The seating curve radius and tooth width differ from DIN 8187 and ANSI B29.1 because the Asian standard roller diameter is slightly different from both. Running Asian chain on European or American sprockets (or vice versa) causes incorrect roller seating and premature wear even where the pitch is identical. Pair with JIS B1801 Asian standard roller chain<\/a>.<\/p>\r\n\r\n<\/div>\r\n

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C45 with Hardened Teeth \u2014 35B and Above<\/h3>\r\n

All FBN and FBK sprockets in 35B through 120B are C45 carbon steel with induction-hardened tooth flanks at 52\u201358 HRC. The bore is machined before the heat treatment cycle and confirmed dimensionally after hardening. 25B sprockets are lighter duty \u2014 plain C45 without tooth hardening, suitable for the light loads in 25B drive applications. SUS304 stainless variants (SUSFBP prefix) are plain bore only and are unhardened by material.<\/p>\r\n\r\n<\/div>\r\n

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FBK Flange Type \u2014 Lateral Retention<\/h3>\r\n

The FBK type adds a flange face to the hub, providing a bearing face against a shaft shoulder or collar. This is required in applications where the sprocket must be retained axially on the shaft by its own geometry rather than relying entirely on the setscrew. FBK is the standard type for chain drives in Japanese agricultural machinery and material handling equipment where the sprocket position is located by a shaft step rather than by a setscrew alone.<\/p>\r\n\r\n<\/div>\r\n

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Korea Ever-Power for Asian OEM Drives<\/h3>\r\n

Korean industrial machinery uses JIS-based chain standards for all domestic drives. Korea Ever-Power Asian standard finished bore sprockets are the correct replacement for drives in Korean-manufactured equipment across all sectors \u2014 construction machinery, agricultural equipment, industrial conveyors and textile machinery. The same hub geometry, bore sizes and keyway dimensions as the original Korean OEM specification.<\/p>\r\n\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>\r\n\r\n

Matching Chain & Related Products<\/h2>\r\n
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Matching Asian Standard Roller Chain<\/p>\r\n

Match your FBN\/FBK sprocket with JIS B1801 Asian standard roller chain in the same chain number (35B, 40B, 60B, 80B etc.). Standard, H-series, self-lubricating and SUS304 stainless variants available. Never run European DIN 8187 or ANSI B29.1 chain on Asian sprockets.<\/p>\r\nView Driving Chains \u2192<\/a>\r\n\r\n<\/div>\r\n<\/div>\r\n

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Leaf Chains<\/a><\/h3>\r\n

BL and LH series leaf chains for forklift masts, industrial door drives, and hoist mechanisms. Tensile ratings from 11 kN to over 1,600 kN.<\/p>\r\nView Leaf Chains<\/a>\r\n\r\n<\/div>\r\n

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Engineering Chains<\/a><\/h3>\r\n

Welded steel, cast iron, and forged chains for heavy-duty industrial conveying in steel mills, cement plants, mining, and chemical processing.<\/p>\r\nView Engineering Chains<\/a>\r\n\r\n<\/div>\r\n

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Stainless Steel Chains<\/a><\/h3>\r\n

SUS304 and SUS316L roller chains for food, pharmaceutical, and chemical environments. Suitable for washdown, elevated temperature, and corrosive media.<\/p>\r\nView SS Chains<\/a>\r\n\r\n<\/div>\r\n

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Agricultural Chains<\/a><\/h3>\r\n

CA, CC, and corn-chain series for combine harvesters, cotton pickers, balers, and spreading equipment. ISO 487 \/ ASME B29.100 standard.<\/p>\r\nView Agricultural Chains<\/a>\r\n\r\n<\/div>\r\n<\/div>\r\n\r\n

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Request a Quote \u2014 Asian Standard Finished Bore Sprockets<\/h3>\r\n

Specify chain size (e.g. 60B), tooth count, type (FBN or FBK), bore diameter in mm. Stainless SUSFBP available for 25B. Response within one working day.<\/p>\r\n\r\n

Get a Quote Now<\/a>\r\nAll Sprocket Products<\/a><\/div>\r\n<\/div>\r\n<\/div>\r\n<\/div>","_et_gb_content_width":""},"product_brand":[],"product_cat":[24],"product_tag":[],"class_list":["post-259","product","type-product","status-publish","has-post-thumbnail","product_cat-sprockets","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/5speedtransmission.com\/es\/wp-json\/wp\/v2\/product\/259","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/5speedtransmission.com\/es\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/5speedtransmission.com\/es\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/5speedtransmission.com\/es\/wp-json\/wp\/v2\/comments?post=259"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/5speedtransmission.com\/es\/wp-json\/wp\/v2\/media\/236"}],"wp:attachment":[{"href":"https:\/\/5speedtransmission.com\/es\/wp-json\/wp\/v2\/media?parent=259"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/5speedtransmission.com\/es\/wp-json\/wp\/v2\/product_brand?post=259"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/5speedtransmission.com\/es\/wp-json\/wp\/v2\/product_cat?post=259"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/5speedtransmission.com\/es\/wp-json\/wp\/v2\/product_tag?post=259"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}