Las puntuaciones son marcas relativas 0–100 dentro de este atlas. Sirven para explorar, no como especificación de ingeniería.
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Respuestas rapidas
¿Qué autoridad o corredor local importa para este tipo?
Empieza por la lente local: homologación, licencias de operador y hubs — no una checklist global.
Is this a buying guide?
No. Tool-Lifes /vehicles is an educational atlas. It explains history, systems and culture without affiliate rankings.
Are the scores official?
No. The six scores are relative editorial 0–100 marks across the 48 types on this site.
Where do the photos come from?
Lead images resolve from Wikimedia Commons via Wikipedia titles on the English masters, with licences recorded on the credits page.
Why metric units?
Metric is the default. Regional notes (US customary, local brand culture) appear in culture and market chapters.
How is this different from a wiki article?
Each type gets seven fixed-depth chapters, comparable scores and cross-type labs — structured for browsing, not a single freeform page.
En Tractor, propulsión, estructura, control y seguridad comparten el mismo sobre de operación.
Los medidores resumen margen estructural, mantenibilidad y factores humanos en puntuación relativa.
Sistemas
Estructura
Tractor: Steel frame carries engine mass; Category I–IV hitch links implement lift arms and top link to mounted tools.
Propulsión
Tractor: Flywheel PTO spins at rated RPM to drive mowers, balers, and pumps through guarded universal joints.
Energía
Tractor: Hydrostatic pedals give infinite speed control; powershift transmissions shuttle ranges for field work.
Control
Tractor: Electronic hitch control and ISOBUS terminals adjust depth, rate, and section shutoff on planters.
Interfaz
Tractor: Roll-over protective structure and interlocked seat sensor cut PTO if operator leaves seat.
Seguridad
Tractor: Front weights and fluid ballast tune traction; tire pressure sets soil compaction footprint.
Medidores relativos
Puntos calientes
Tractor: PTO guard & shaft
Tractor: Missing guards wrap clothing around spinning shafts—a common entanglement fatality.
Tractor: Hydraulic hose bursts
Tractor: Pinhole leaks inject fluid under skin; aged hoses fail at crimp fittings.
Tractor: Three-point hitch pins
Tractor: Worn pins allow implement sway and sudden drop on uneven ground.
Tractor: Air cleaner restriction
Tractor: Dusty fields clog filters and derate power before turbo damage.
Tractor: Clutch pack glaze
Tractor: Slipping powershift clutches overheat and lose pull on heavy tillage.
Materiales
Tractor: Gray cast iron axle housings
Tractor: Massive housings spread implement reaction loads into the frame.
Tractor: Hardened PTO splines
Tractor: Splined shafts tolerate cyclic torque from balers and augers.
Tractor: Biodegradable hydraulic fluid
Tractor: Some fleets use env-friendly fluid for leaks near waterways.
Tractor: Radial ag tires (IF/VF)
Tractor: High-flexion carcasses carry load at lower pressure to reduce compaction.
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