{"id":2376,"date":"2026-01-23T07:59:43","date_gmt":"2026-01-23T07:59:43","guid":{"rendered":"https:\/\/tractorptoshaft.net\/?post_type=product&p=2376"},"modified":"2026-01-23T09:27:17","modified_gmt":"2026-01-23T09:27:17","slug":"lemon-tube-drive-shaft-for-tractor","status":"publish","type":"product","link":"https:\/\/tractorptoshaft.net\/ro\/product\/arbore-de-transmisie-cu-tub-de-lamaie-pentru-tractor\/","title":{"rendered":"Arbore de transmisie cu tub de l\u0103m\u00e2ie pentru tractor"},"content":{"rendered":"
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Dac\u0103 a\u021bi petrecut la fel de mul\u021bi ani \u00een atelier ca \u0219i noi - undeva peste 18 ani acum ocup\u00e2ndu-v\u0103 doar de transmisia puterii - \u00eencepe\u021bi s\u0103 observa\u021bi tipare \u00een modul \u00een care utilajele se defecteaz\u0103. Un lucru devine clar foarte repede: c\u00e2nd vine vorba de fiabilitate \u00een agricultura european\u0103, Arbore cardanice pentru tractor cu tub de l\u0103m\u00e2ie<\/strong> are the standard for a reason. We often hear folks asking about the newer star profiles or the triangle tubes (which have their place, don’t get me wrong), but for the vast majority of general-purpose farming in the Netherlands, the lemon profile remains the absolute workhorse.<\/p>\n

\"Diagrama<\/p>\n

The beauty of the lemon profile isn’t just in its shape; it is in the physics of the sliding resistance. Unlike square shafts that lock up under high torque, or splined shafts that can be a nightmare to grease properly, the lemon tube offers two wide driving ribs that distribute the load while allowing the shaft to telescope smoothly. This is critical. In our experience, 80% of PTO failures aren’t actually the U-joint snapping first; it’s the telescoping tubes freezing up because they couldn’t slide while under load, which then exerts a massive axial force on the gearbox bearings.<\/p>\n

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\"Vedere<\/p>\n

Anatomia unui cal de munc\u0103: Observa\u021bi tuburile interioare \u0219i exterioare cu profil de l\u0103m\u00e2ie, concepute pentru telescopare cu frecare redus\u0103.<\/p>\n<\/div>\n

C\u00e2nd le fabric\u0103m pe acestea la Putere ve\u0219nic\u0103<\/a>, we pay obsessive attention to the tolerance between the inner and outer tube. If it\u2019s too tight, you get heat buildup; too loose, and the vibration at 540 RPM will rattle your teeth out. The trick is achieving that “goldilocks” fit where the grease film can maintain a barrier, ensuring that even when you are turning a heavy baler around a tight headland, the shaft adjusts its length without fighting the tractor.<\/p>\n<\/div>\n

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C\u0103s\u0103toria nerostit\u0103: Arbore \u0219i cutii de viteze<\/h2>\n

Nu putem vorbi despre pu\u021b f\u0103r\u0103 s\u0103-l men\u021bion\u0103m pe partenerul s\u0103u. Arbore cardanic tractor cu tub de l\u0103m\u00e2ie<\/strong> is only as good as the gearbox it connects to. Most printers and catalog designers don’t realize this, but the PTO shaft acts as a fuse. If you have a mismatch\u2014say, a shaft that is rated for 100HP connected to a gearbox rated for 40HP\u2014and you hit a stump, the gearbox explodes because the shaft didn’t yield.<\/p>\n

We supply matching agricultural gearboxes that are tuned to the torsional rigidity of our lemon tubes. We look at the “Safety Factor” of the entire drivetrain. The gearbox input shaft (usually a standard 1-3\/8″ 6-spline) needs to have the exact same hardness rating as the PTO yoke splines. If one is significantly harder, it will chew the other up in a season. We\u2019ve seen it happen a dozen times.<\/p>\n

\"Cutie<\/div>\n

Indiferent dac\u0103 utiliza\u021bi o cutie de viteze cu unghi drept pentru un distribuitor de \u00eengr\u0103\u0219\u0103minte sau o cutie de accelerare pentru un pulverizator, asigurarea concentricit\u0103\u021bii dintre ie\u0219irea prizei de putere \u0219i intrarea cutiei de viteze este vital\u0103. Echipa noastr\u0103 v\u0103 poate ajuta s\u0103 le potrivi\u021bi perfect.<\/p>\n<\/div>\n

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Raport de teren: Criza furajer\u0103 din Friesland<\/h2>\n

Let me share a quick story from last autumn. We had a client, let’s call him Pieter, running a dairy operation up near Leeuwarden. He was operating a large vertical feed mixer\u2014a beast of a machine that requires massive torque to get the augers moving when fully loaded with wet silage. Pieter kept snapping the cross kits on his PTO shafts. He was buying cheap replacements from a local hardware store, thinking “steel is steel,” right?<\/p>\n

\"Podea<\/div>\n

When we got the broken parts back to our lab, the issue wasn’t the steel quality of the cross kit itself\u2014it was the tube profile. He was using a generic triangular tube that was slightly undersized for the torque spikes of the mixer. Under load, the tube was twisting just enough to bind the telescoping action. When the mixer bounced over the concrete threshold of the barn, the shaft couldn’t compress, and bubuitur\u0103<\/em>\u2014for\u021ba axial\u0103 a defectat lag\u0103rele transversale.<\/p>\n

L-am schimbat la un camion de mare tonaj Arbore cardanic tractor cu tub de l\u0103m\u00e2ie<\/strong> (Series 8 equivalent) with a friction clutch set specifically to his tractor\u2019s horsepower. The lemon profile provided better contact surface area to handle the torque without binding, allowing the suspension to do its work. He hasn’t had a downtime incident in six months. It\u2019s these small geometry changes that make or break your harvest window.<\/p>\n<\/div>\n

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\u00cen interiorul o\u021belului: Materiale \u0219i performan\u021b\u0103<\/h2>\n

Po\u021bi vopsi un arbore \u00een galben \u0219i s\u0103-l nume\u0219ti priz\u0103 de putere, dar adev\u0103rul se ascunde \u00een metalurgie. Arborii no\u0219tri utilizeaz\u0103 o\u021bel aliat 20CrMnTi pentru furci. De ce? Pentru c\u0103 rezist\u0103 excep\u021bional de bine la tratamentul termic de c\u00e9mentare, oferindu-v\u0103 o suprafa\u021b\u0103 dur\u0103 \u0219i rezistent\u0103 la uzur\u0103 (pentru cupele lag\u0103relor), men\u021bin\u00e2nd \u00een acela\u0219i timp un miez ductil \u0219i rezistent, care poate absorbi \u0219ocurile f\u0103r\u0103 a cr\u0103pa.<\/p>\n

\u00cen special pentru tuburile Lemon, folosim o\u021bel tras la rece. Tragerea la rece aliniaz\u0103 structura fibrelor metalului, f\u0103c\u00e2ndu-l semnificativ mai rezistent la r\u0103sucire torsional\u0103 dec\u00e2t tuburile standard laminate la cald.<\/p>\n

\n\n\n\n\n\n\n\n\n
Specifica\u021bii serie<\/th>\nProfilul tubului<\/th>\nPutere la 540 RPM<\/th>\nPutere la 1000 RPM<\/th>\nAplica\u021bie tipic\u0103<\/th>\n<\/tr>\n<\/thead>\n
Seria 1 (L1)<\/td>\nL\u0103m\u00e2ie 30mm<\/td>\n16 CP<\/td>\n25 CP<\/td>\nMa\u0219ini de stropit mici, Ma\u0219ini de \u00eentors f\u00e2nul<\/td>\n<\/tr>\n
Seria 4 (L4)<\/td>\nL\u0103m\u00e2ie 43,5 mm<\/td>\n35 CP<\/td>\n55 CP<\/td>\nDistribuitoare de \u00eengr\u0103\u0219\u0103minte, cositoare mici<\/td>\n<\/tr>\n
Seria 6 (L6)<\/td>\nL\u0103m\u00e2ie 54mm<\/td>\n64 CP<\/td>\n100 CP<\/td>\nCultivatoare rotative, Prese de balotat (medii)<\/td>\n<\/tr>\n
Seria 8 (L8)<\/td>\nL\u0103m\u00e2ie 63mm<\/td>\n95 CP<\/td>\n145 CP<\/td>\nArare grea, Mixoare de furaje, Toc\u0103toare de lemn<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Not\u0103: Dimensiunile se refer\u0103 la diametrul exterior al tubului exterior. M\u0103sura\u021bi \u00eentotdeauna profilul existent al tubului \u00eenainte de a comanda.<\/em><\/p>\n<\/div>\n

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Cum ne compar\u0103m cu numele mari<\/h2>\n

\u00cen Olanda, Walterscheid este un nume cunoscut. \u00cei respect\u0103m; ei au stabilit standardul Euro-cardan. Cu toate acestea, pentru mul\u021bi fermieri \u0219i ateliere de repara\u021bii aftermarket, pre\u021bul suplimentar pentru numele de marc\u0103 devine greu de justificat. Ne pozi\u021bion\u0103m Arbore cardanice pentru tractor cu tub de l\u0103m\u00e2ie<\/strong> ca alternativ\u0103 pragmatic\u0103. Suntem complet interschimbabili cu profilele standard germane.<\/p>\n

\n\n\n\n\n\n\n\n\n
Caracteristic\u0103<\/th>\nMarc\u0103 OEM major\u0103 (UE)<\/th>\nImporturi asiatice ieftine<\/th>\nPutere ve\u0219nic\u0103 (Arborele noastre)<\/th>\n<\/tr>\n<\/thead>\n
Kit de etan\u0219are \u00eencruci\u0219at<\/td>\nGarnitur\u0103 tripl\u0103 cu buze<\/td>\nGarnitur\u0103 unic\u0103 din cauciuc<\/td>\nBuz\u0103 dubl\u0103 + protec\u021bie anti-praf<\/td>\n<\/tr>\n
Grosimea tubului<\/td>\nStandard<\/td>\nAdesea -10% Diluant<\/td>\nOp\u021biuni standard + ranforsate<\/td>\n<\/tr>\n
Gard\u0103 de siguran\u021b\u0103<\/td>\nRezistent la UV, eliberare u\u0219oar\u0103<\/td>\nPlastic fragil<\/td>\nPE rezistent la impact, certificat CE<\/td>\n<\/tr>\n
Indicele de cost<\/td>\n100% (Ridicat)<\/td>\n40% (Sc\u0103zut)<\/td>\n65% (Cel mai bun raport calitate-pre\u021b)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
\"Stocare
\n\"Prelucrarea<\/div>\n
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Unde str\u0103luce\u0219te tubul de l\u0103m\u00e2ie<\/h2>\n

Profilul Lemon este incredibil de versatil, dar constat\u0103m c\u0103 func\u021bioneaz\u0103 cel mai bine \u00een aplica\u021bii \u00een care este necesar\u0103 o extensie telescopic\u0103 moderat\u0103 \u00een timpul func\u021bion\u0103rii.<\/p>\n

1. Ma\u0219ini de tuns iarba de finisat:<\/strong> C\u00e2nd cosi\u021bi \u0219an\u021buri sau teren denivelat, platforma se mi\u0219c\u0103 constant \u00een sus \u0219i \u00een jos. Frecarea redus\u0103 a tubului de l\u0103m\u00e2ie reduce solicitarea asupra rulmen\u021bilor arborelui de intrare.<\/p>\n

2. Distribuitoare de \u00eengr\u0103\u0219\u0103minte:<\/strong> Precizia este esen\u021bial\u0103 aici. Orice vibra\u021bie din ax se traduce \u00een pl\u0103cile de \u00eempr\u0103\u0219tiere, ceea ce poate strica modelul de \u00eempr\u0103\u0219tiere. Natura echilibrat\u0103 a profilului de l\u0103m\u00e2ie ajut\u0103 la men\u021binerea unui proces lin.<\/p>\n

3. Balotare:<\/strong> \u00cen cazul preselor de balo\u021bi rotunzi, admisia constant\u0103 de material creeaz\u0103 o sarcin\u0103 pulsatorie. Arborii no\u0219tri sunt proiecta\u021bi s\u0103 absoarb\u0103 acel \u0219oc ritmic f\u0103r\u0103 a dezvolta joc \u00een tuburile glisante.<\/p>\n<\/div>\n

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The “Old Master” Selection Guide<\/h2>\n

Buying the shaft is the easy part. Installing it correctly? That\u2019s where 50% of people get it wrong. The most common mistake we see is the “bottoming out” issue.<\/p>\n