{"id":1147,"date":"2026-03-20T05:46:07","date_gmt":"2026-03-20T05:46:07","guid":{"rendered":"https:\/\/ptoshaft.supplies\/?post_type=product&p=1147"},"modified":"2026-03-20T05:46:09","modified_gmt":"2026-03-20T05:46:09","slug":"tractor-pto-spline-shaft-6-and-21-spline-options","status":"publish","type":"product","link":"https:\/\/ptoshaft.supplies\/pt\/product\/tractor-pto-spline-shaft-6-and-21-spline-options\/","title":{"rendered":"Eixo estriado da tomada de for\u00e7a do trator | Op\u00e7\u00f5es com 6 e 21 estrias"},"content":{"rendered":"

Vis\u00e3o geral do produto<\/h2>\n

A estria \u00e9 onde tudo come\u00e7a. Antes que os mancais transversais absorvam as mudan\u00e7as angulares, antes que os tubos telesc\u00f3picos se ajustem \u00e0 dist\u00e2ncia, a primeira conex\u00e3o mec\u00e2nica entre o seu trator e a transmiss\u00e3o da tomada de for\u00e7a (TDF) ocorre na interface estriada. Se a estria estiver errada, nada mais importa. Eixo estriado da tomada de for\u00e7a (TDF) para tratores e m\u00e1quinas agr\u00edcolas.<\/strong> \u00e9 projetado para garantir uma interface perfeita, com garfos estriados usinados com precis\u00e3o que se encaixam em eixos de tomada de for\u00e7a (TDF) de 6 estrias, 21 estrias e 8 estrias m\u00e9tricas, usados \u200b\u200bem tratores vendidos no mercado coreano.\u00a0\u00a0\"Eixo<\/p>\n

Por que a configura\u00e7\u00e3o da spline \u00e9 t\u00e3o importante?<\/h3>\n

The spline transmits all of the tractor’s PTO torque through interlocking teeth on the yoke bore and the PTO stub. A 6-spline interface has six teeth distributing the load, while a 21-spline<\/strong> interface spreads the same torque across twenty-one teeth, resulting in lower stress per tooth. This is why higher-HP, 1000-RPM PTO outputs typically use 21-spline connections. Choosing the Tractor PTO Spline Shaft with the correct tooth count and diameter ensures a tight fit that doesn’t wear, rattle, or slip during operation.<\/p>\n

6-Spline vs. 21-Spline: Guia R\u00e1pido<\/h3>\n
\n\n\n\n\n\n\n\n\n
Recurso<\/th>\n6-Spline (1-3\/8″)<\/th>\n21-Spline (1-3\/8″)<\/th>\n<\/tr>\n
Velocidade t\u00edpica da tomada de for\u00e7a<\/td>\n540 RPM<\/td>\n1000 RPM<\/td>\n<\/tr>\n
Di\u00e2metro do tubo<\/td>\n1-3\/8 polegadas (34,9 mm)<\/td>\n1-3\/8 polegadas (34,9 mm)<\/td>\n<\/tr>\n
Contagem de dentes<\/td>\n6 dentes<\/td>\n21 dentes<\/td>\n<\/tr>\n
Distribui\u00e7\u00e3o de torque<\/td>\nMaior tens\u00e3o por dente<\/td>\nMenor estresse por dente<\/td>\n<\/tr>\n
Marcas comuns de tratores<\/td>\nA maioria dos tratores (padr\u00e3o)<\/td>\nModelos com maior pot\u00eancia (HP), equipamentos mais recentes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
<\/div>\n

Adaptadores Spline e op\u00e7\u00f5es de configura\u00e7\u00e3o<\/h2>\n

Not every tractor-to-implement combination uses the same spline on both ends. That’s where adapters come in. The Tractor PTO Spline Shaft for Agricultural Machinery is available in several spline configurations to handle mismatched equipment:<\/p>\n

\"Adaptadores<\/p>\n

Adaptador de 6 estrias<\/h3>\n

Conecta um eixo de tomada de for\u00e7a (TDF) de 6 estrias a uma entrada de implemento de 6 estrias. Esta \u00e9 a configura\u00e7\u00e3o mais comum para aplica\u00e7\u00f5es de 540 RPM em tratores com menos de 75 HP. O garfo adaptador possui revestimento de zinco para resist\u00eancia \u00e0 corros\u00e3o e foi projetado para suportar impactos externos durante a opera\u00e7\u00e3o normal no campo.<\/p>\n

Adaptador de 21 estrias<\/h3>\n

Para sa\u00eddas de tomada de for\u00e7a (TDF) de 1000 RPM. O passo mais fino dos dentes do 21-spline<\/strong> A interface exige toler\u00e2ncias de fabrica\u00e7\u00e3o mais rigorosas, e nossos furos estriados usinados por CNC atendem aos padr\u00f5es ISO 500. O eixo estriado da tomada de for\u00e7a do trator com garfos de 21 estrias \u00e9 normalmente usado com implementos de alta pot\u00eancia, como ro\u00e7adeiras rotativas grandes, enfardadeiras de fardos redondos e misturadores de ra\u00e7\u00e3o de alto rendimento.<\/p>\n

Op\u00e7\u00f5es m\u00e9tricas de 8 splines<\/h3>\n

Japanese-market tractors from Kubota, Yanmar, and Iseki often use metric spline dimensions (8-spline 38×32, 42×36, or 48×42 mm). We stock these alongside the standard inch configurations so Korean operators using Japanese compact tractors don’t need separate adapter bushings.<\/p>\n

<\/div>\n

Como identificar sua configura\u00e7\u00e3o de spline<\/h2>\n

If you’re not sure which eixo estriado<\/a> Para identificar a configura\u00e7\u00e3o que seu trator utiliza, aqui est\u00e3o tr\u00eas m\u00e9todos r\u00e1pidos:<\/p>\n

M\u00e9todo 1: Contar os dentes<\/h3>\n

Look at the tractor PTO stub end-on and count the raised teeth. Six large teeth = 6-spline. Twenty-one fine teeth = 21-spline. This is the fastest way to identify the configuration and it doesn’t require any tools.<\/p>\n

M\u00e9todo 2: Medir o di\u00e2metro<\/h3>\n

Use a caliper across the outer diameter of the PTO stub. Common readings: 34.9 mm (1-3\/8″) for both 6 and 21 spline, 44.5 mm (1-3\/4″) for heavy-duty 6 or 20 spline, or metric sizes like 38 mm for Japanese compact tractors.<\/p>\n

M\u00e9todo 3: Consulte o manual do trator.<\/h3>\n

The operator’s manual specifies the PTO spline type. If you’ve lost the manual, our Korean support team can look up the spline configuration by tractor make and model. Send us your tractor details and we’ll confirm the correct Tractor PTO Spline Shaft specification within one business day.<\/p>\n

\"Eixo<\/p>\n

Desgaste da estria: causas, sinais e preven\u00e7\u00e3o<\/h2>\n

Spline wear is the gradual loss of material on the interlocking teeth of the yoke bore and PTO stub. Once wear passes a critical point, the connection develops play that accelerates further damage and can lead to rounding off of the teeth entirely. Here’s what to watch for:<\/p>\n