{"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\/sv\/product\/tractor-pto-spline-shaft-6-and-21-spline-options\/","title":{"rendered":"Traktorns kraftuttagsaxel med spline | Alternativ med 6 och 21 splines"},"content":{"rendered":"

Produkt\u00f6versikt<\/h2>\n

Splines \u00e4r d\u00e4r allt b\u00f6rjar. Innan tv\u00e4rlagren absorberar vinkelf\u00f6r\u00e4ndringar, innan teleskopr\u00f6ren justerar avst\u00e5ndet, sker den allra f\u00f6rsta mekaniska kopplingen mellan din traktor och kraftuttagsdrivlinan vid splinesgr\u00e4nssnittet. Om splines \u00e4r fel spelar inget annat n\u00e5gon roll. Traktorns kraftuttagsaxel f\u00f6r jordbruksmaskiner<\/strong> \u00e4r byggt kring att f\u00e5 det gr\u00e4nssnittet r\u00e4tt, med precisionsbearbetade splinesok som passar 6-splines, 21-splines och metriska 8-splines kraftuttagstappar som anv\u00e4nds p\u00e5 traktorer som s\u00e4ljs \u00f6ver den koreanska marknaden.\u00a0\u00a0\"Traktorns<\/p>\n

Varf\u00f6r Spline-konfiguration \u00e4r s\u00e5 viktig<\/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: Snabbreferens<\/h3>\n
\n\n\n\n\n\n\n\n\n
S\u00e4rdrag<\/th>\n6-Spline (1-3\/8″)<\/th>\n21-Spline (1-3\/8″)<\/th>\n<\/tr>\n
Typisk kraftuttagsvarvtal<\/td>\n540 varv\/min<\/td>\n1000 varv\/min<\/td>\n<\/tr>\n
Stubbdiameter<\/td>\n1-3\/8 tum (34,9 mm)<\/td>\n1-3\/8 tum (34,9 mm)<\/td>\n<\/tr>\n
Tandantal<\/td>\n6 t\u00e4nder<\/td>\n21 t\u00e4nder<\/td>\n<\/tr>\n
Momentf\u00f6rdelning<\/td>\nH\u00f6gre stress per tand<\/td>\nL\u00e4gre stress per tand<\/td>\n<\/tr>\n
Vanliga traktorm\u00e4rken<\/td>\nDe flesta traktorer (standard)<\/td>\nModeller med h\u00f6gre hk, nyare utrustning<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
<\/div>\n

Spline-adaptrar och konfigurationsalternativ<\/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

\"Traktorns<\/p>\n

6-splinesadapter<\/h3>\n

Ansluter en 6-splines kraftuttagsstub till en 6-splines redskapsing\u00e5ng. Detta \u00e4r den vanligaste konfigurationen f\u00f6r 540 varv\/min-applikationer p\u00e5 traktorer under 75 hk. Adaptergaffeln \u00e4r zinkbelagd f\u00f6r korrosionsbest\u00e4ndighet och konstruerad f\u00f6r att motst\u00e5 yttre st\u00f6tar under normal f\u00e4ltdrift.<\/p>\n

21-spline-adapter<\/h3>\n

F\u00f6r kraftuttagseffekter p\u00e5 1000 varv\/min. Den finare tanddelningen p\u00e5 21-spline<\/strong> Gr\u00e4nssnittet kr\u00e4ver sn\u00e4vare tillverkningstoleranser, och v\u00e5ra CNC-fr\u00e4sta splinesh\u00e5l uppfyller ISO 500-standarder. Traktorns kraftuttagssplineaxel med 21-splines ok paras vanligtvis ihop med redskap med h\u00f6gre hk som stora rotorkutterar, rundbalpressar och h\u00f6gpresterande foderblandare.<\/p>\n

Metriska 8-spline-alternativ<\/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

Hur man identifierar din splinekonfiguration<\/h2>\n

If you’re not sure which splineaxel<\/a> konfiguration som din traktor anv\u00e4nder, h\u00e4r \u00e4r tre snabba identifieringsmetoder:<\/p>\n

Metod 1: R\u00e4kna t\u00e4nderna<\/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

Metod 2: M\u00e4t diametern<\/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

Metod 3: Kontrollera traktorns manual<\/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

\"Traktorns<\/p>\n

Splineslitage: Orsaker, tecken och f\u00f6rebyggande<\/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