HC20100.131.00 Rotary

100HP · 1.31:1 Ratio · 600 rpm · Built for British Farming

The HC20100.131.00 agricultural gearbox is purpose-built for high-demand field operations across the United Kingdom. Whether driving spreaders, slurry tankers, hay balers, or large-format mowers on challenging British terrain, this agricultural gearbox delivers consistent 100HP power transfer at a precisely tuned 1.31:1 gear ratio. The design philosophy centres on durability under continuous load — field seasons in the UK rarely offer the machinery downtime that lighter-duty equipment requires. This unit is engineered to keep running from early spring cultivation through late autumn harvesting without costly interventions in the middle of a busy rotation.

With a rated input speed of 600 rpm and a robust 58 kg construction, the HC20100.131.00 agricultural gearbox bridges the gap between compact utility gearboxes and full industrial-class powertrain components. British farmers and agricultural contractors operating mixed arable and livestock enterprises will find that its input/output configuration — 8-Ø48X Ø42X8 — integrates cleanly with standard UK PTO-driven implements, reducing the need for bespoke adaptor assemblies. The gearbox has been widely adopted in the UK’s eastern grain belt and upland sheep operations alike, where reliability and straightforward serviceability matter more than specification-sheet numbers.

At its core, the HC20100.131.00 agricultural gearbox operates on a helical gear mesh principle. The 16-tooth input gear drives a 21-tooth output gear — a tooth-count pairing that achieves the 1.31:1 speed reduction with minimal energy loss through gear slip or vibration. Helical tooth geometry means the load is distributed progressively across the tooth face rather than landing all at once, which translates directly into lower noise, reduced heat generation, and a longer service interval between oil changes. On UK farms where machinery often runs continuously during a narrow planting or harvest window, that reliability edge is operationally significant.

The housing is precision cast in high-grade grey iron, chosen for its excellent vibration-damping characteristics and resistance to the stress concentrations that crack lighter alloy housings under shock loading — a real-world risk when operating on stony upland ground across Yorkshire, the Scottish Borders, or the Welsh Marches. Internal gears are machined from carburised alloy steel and heat-treated to achieve a surface hardness that resists pitting over years of heavy use. All bearing seats are machined to tight tolerances to prevent the micro-movement that causes premature race wear.

Beyond the HC20100.131.00, our agricultural gearbox range covers a broad spectrum of ratio and torque configurations for different implement types. UK operators looking for lighter-duty compact options may want to review the HC-X30 Agricultural Gearbox, which suits smaller PTO-driven spreaders and compact cultivation machinery where a lower overall unit weight is operationally useful. For high-intensity rotary cutting applications common on UK contracting operations — heavy verge mowing, road-edge vegetation management — the HC-RC61 Agricultural Gearbox offers a configuration specifically developed for rotary cutter powerheads. Both are supported by the same UK-responsive supply chain and custom-specification service that backs the HC20100.131.00.

Our dedicated agricultural gearbox production facility operates with CNC gear-cutting centres, precision heat-treatment lines, and full in-house quality inspection — including CMM dimensional verification and gear tooth profile checking on every production batch. This end-to-end manufacturing control is what allows us to maintain consistent tolerances across high-volume supply contracts to UK agricultural equipment manufacturers and distributors.

Beyond standard catalogue specifications, our engineering team handles bespoke agricultural gearbox configurations. If your application requires a modified ratio, non-standard shaft diameters, a different output rotation direction, or an alternative housing mounting pattern to retrofit existing implement brackets, our technical team can prepare a custom specification drawing and prototype within typical lead times. UK agricultural machinery OEMs and implement manufacturers are welcome to discuss volume supply arrangements, co-engineering projects, or private-label supply of agricultural gearbox units. Contact us directly for a detailed quote.

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