Kuvaus
The HC-9.311-JCG agricultural gearbox is purpose-built for the rigours of British farming. Designed around a 36/12-tooth bevel gear set with a 4.35 module, this unit delivers a clean 1:3 speed reduction at up to 540 rpm rated input — exactly matching the standard PTO output of UK tractors from 60 HP upward. Whether you’re driving a flail mower on a Cotswold hillside, running a compost turner on a Norfolk arable holding, or powering a bespoke harvesting attachment for a Scottish contractor fleet, the HC-9.311-JCG provides the mechanical reliability that commercial operators depend on. The 21 kg net weight strikes a balance between structural robustness and practical handling during field installation or workshop servicing, and the input/output arrangement — 1 3/8 Z6 splined shaft combined with optic-axis options — ensures straightforward integration with standard PTO drive shafts and custom driveline configurations alike. Every unit leaves our facility having passed load and noise testing, giving UK distributors and end-users a product they can fit and forget across multiple seasons.
HC-9.311-JCG Agricultural Gearbox — Standard Production Unit
Tekniset tiedot
Full product parameter data extracted from factory documentation. All values are nominal; contact us for tolerance sheets or custom configurations.
| Tuoteparametrit | |
|---|---|
| Item | Value |
| Malli | HC-9.311-JCG |
| Suhde | 1:3 |
| Hampaat | 36/12 |
| Moduuli | 4.35 |
| Power (HP) | 50 |
| Rated Input | 540 rpm |
| Input/Output Description | 1 3/8 Z6 / Optic axis / Optic axis |
| Weight (N.W) | 21 kg |
Series Length Reference (mm)
| Length | -1 | -2 | -3 | -4 | -5 | -6 | -7 | -8 | -9 | -10 | -11 | -12 | -13 | -14 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L | 375 | 500 | 615 | 670 | 700 | 780 | 810 | 950 | 1060 | 1140 | 1200 | 1250 | 1350 | 1500 |
| L1 | 220 | 345 | 460 | 515 | 545 | 625 | 655 | 795 | 905 | 985 | 1045 | 1095 | 1195 | 1345 |
Dimensional drawing — HC-9.311-JCG series
How It Works — Design & Materials
Understanding the engineering behind the HC-9.311-JCG helps buyers and OEM engineers specify the right unit first time.
Bevel Gear Mechanism
The HC-9.311-JCG uses a pair of precision-cut bevel gears — 36 teeth on the driven wheel and 12 on the pinion — to convert PTO rotational input into a reduced-speed, higher-torque output at a 90-degree shaft angle. This perpendicular arrangement is the geometry that unlocks compatibility with the widest range of trailed and mounted implements, from side-discharge mowers to soil-preparation equipment. The 4.35 module gives each tooth generous contact area, spreading load and resisting pitting under shock loads common in harvesting or tillage work.
Housing & Gear Material
The main housing is produced from high-strength ductile cast iron, chosen for its superior vibration-damping properties versus aluminium alloy — critical when operating over uneven UK field terrain. Internal gears are case-hardened alloy steel (typically 20CrMnTi or equivalent), heat-treated to 58–62 HRC surface hardness for long service intervals. Precision-ground gear flanks achieve grade 6 accuracy, minimising backlash and ensuring quiet, consistent power delivery even at sustained 540 rpm input over full working days.
Lubrication & Sealing
Splash lubrication with EP80W-90 gear oil ensures that all rotating surfaces receive adequate film thickness across the full operating temperature range encountered in British seasons — from cold January field prep to warm July harvest runs. Double-lipped oil seals at all shaft exits meet IP65 ingress protection in practice, keeping field dust and moisture out of the gear chamber. Drain, fill, and sight plugs are all wrench-accessible for quick maintenance in a farm workshop without removing the unit from the implement.
Sovellusskenaariot
The HC-9.311-JCG agricultural gearbox fits naturally across the full spectrum of UK arable, grassland, and specialist farming operations.
🍁 Flail & Disc Mowers
Absorbs shock loads from stone strikes; the 1:3 ratio delivers blade-tip speed in the ideal range for clean cuts on UK grassland and amenity turf.
🍊 Rotary Tillers & Cultivators
High-torque output at reduced speed is ideal for soil engagement; suits light-to-medium soils across Yorkshire, Lincolnshire, and East Anglian arable land.
♿ Slurry Spreaders & Pumps
Continuous-duty rating and sealed bearings handle slurry and liquid fertiliser spreading operations reliably, even in the wet autumns typical of western England and Wales.
🛠 OEM Custom Machinery
Popular with UK machinery builders needing a proven off-the-shelf 50 HP bevel gearbox as the basis for bespoke combine headers, specialist harvesters, and field-trial equipment.
Why This Gearbox Stands Out
Each advantage below reflects direct feedback from UK agricultural machinery dealers and farming operations.
✓ Direct PTO Compatibility
The 1 3/8 Z6 splined input is the UK/EU standard, meaning zero adaptor plates or custom flanges — bolt on, connect the PTO shaft, and run.
✓ Shock-Load Tolerance
Case-hardened bevel gears with generous 4.35 module handle transient spikes from stone strikes or ground-engagement interruptions without tooth failure.
✓ Wide Series Range
Fourteen length variants (L from 375 mm to 1500 mm) mean distributors can hold one core unit and satisfy almost any driveline geometry requirement off the shelf.
✓ Low-Maintenance Design
Accessible oil service points and double-lipped seals mean annual fluid changes can be completed in under 15 minutes — reducing downtime during peak seasonal windows.
Related Agricultural Gearboxes
If you need a different power rating or configuration, these models from the same series may suit your application.
Agricultural Gearbox
HC-X30
Compact, high-efficiency agricultural gearbox designed for lighter-duty applications, precision seeding, and specialist horticultural machinery where a smaller form factor is paramount.
Agricultural Gearbox
HC-RC61
Heavy-duty round-baler drive gearbox rated for high-cycle continuous operation. Ideal for UK silage contractors and mixed livestock/arable farms running baling equipment through long summer days.
Asiakkaiden menestystarinoita
Real-world applications from UK farming and machinery sectors.
🏭 Case Study — UK Machinery OEM
Lincolnshire Arable Equipment Manufacturer Reduces Lead Time by 40%
A Lincolnshire-based OEM building specialist strip-till cultivators had been sourcing bevel gearboxes from a domestic supplier with lead times exceeding 14 weeks and a catalogue limited to three size options. After trialling the HC-9.311-JCG on a batch of twelve machines destined for cereal farms across the East Midlands, their engineering team reported zero warranty returns over a full 18-month growing cycle. The 1 3/8 Z6 input eliminated the adaptor cost that had previously added £38 per unit, and the 14-variant length series meant that the same purchase order now covered two model lines where previously they had needed separate suppliers. They now source 60 units per year direct, with a standard 6-week delivery window from confirmed order.
“The series coverage is the real differentiator. We stopped managing two gearbox suppliers and simplified the entire driveline spec.” — Procurement Manager, Lincolnshire OEM
★★★★★★
“Running these on our flail hedge-cutters in the Scottish Borders — now into the third season with no bearing replacements. Seals have held perfectly despite working in wet conditions all autumn.”
D. McAllister — Agricultural Contractor, Scottish Borders
★★★★★★
“Ordered the HC-9.311-JCG series for a batch of slurry pump drives on a mixed dairy farm in Yorkshire. Fit was perfect first time — the 1 3/8 spline matched our existing PTO shafts and no machining was needed.”
G. Hartley — Farm Machinery Dealer, North Yorkshire
★★★★★★
“Used as a replacement for a worn-out OEM gearbox on a Kuhn disc mower. The dimensions were spot-on, noise level is noticeably lower, and the price per unit was competitive compared to what we’d been paying through the dealership.”
T. Walsh — Workshop Manager, Devon Agricultural Services
Manufacturing Capability & Custom Orders
Our production facility operates dedicated gear-cutting, heat-treatment, and assembly lines focused exclusively on agricultural power transmission.
Our facility runs CNC hobbing machines capable of producing bevel and spiral bevel gears up to module 10, supported by in-house vacuum heat treatment achieving consistent case depths of 0.8–1.5 mm across production batches. Quality control includes CMM gear-flank inspection, noise bench testing, and load testing to 120% rated torque before each batch is released. For UK buyers requiring OEM customisation — whether that’s a modified output shaft diameter, a non-standard mounting flange pattern, a specific paint or e-coat specification, or a private-label arrangement — our engineering team can quote from your drawing or provide reverse-engineering support from a sample unit. Minimum order quantities for standard items start at 10 pieces; bespoke configurations from 50 pieces. We work with UK machinery manufacturers on NDAs and can provide CE-aligned dimensional reports on request.
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Answers to the questions UK buyers and OEM engineers ask most often.
Q: What is the best agricultural gearbox supplier in the UK for a 50 HP PTO-driven flail mower application?
For UK flail mower applications requiring 50 HP power transfer at a 1:3 ratio, the HC-9.311-JCG agricultural gearbox is purpose-designed with a 1 3/8 Z6 splined input matching standard UK tractor PTO outputs, 540 rpm rated input, and case-hardened bevel gears rated for the shock loads typical of flail work.
Q: How much does an agricultural bevel gearbox cost and can I get a quote for a batch order in the UK?
Pricing depends on order quantity and any customisation requirements. UK buyers can request a quote by emailing [email protected] with their required series variant, quantity, and delivery address. Standard units have a minimum order of 10 pieces.
Q: Which agricultural gearbox is compatible with a standard UK 540 rpm tractor PTO output shaft?
The HC-9.311-JCG agricultural gearbox is rated for 540 rpm input and uses a 1 3/8 Z6 splined input shaft — the standard connection for UK and European tractors at 540 rpm PTO. No adaptors are required for typical UK machinery configurations.
Q: Where can I find a reliable agricultural gearbox manufacturer that offers OEM customisation and private label for UK machinery builders?
Our production facility offers full OEM customisation including modified shaft diameters, non-standard flange patterns, surface treatment specifications, and private-label arrangements. Minimum order quantities for bespoke configurations start at 50 pieces. Send your technical drawing or a sample unit to [email protected].
Q: When should I change the gear oil in an agricultural bevel gearbox used on a UK farm?
Change the initial oil fill after the first 50 hours of operation to flush break-in particles. Subsequent intervals of 500 operating hours or annually — whichever comes sooner — are recommended using EP80W-90 gear oil. UK autumn and winter conditions accelerate moisture contamination, so check oil colour at each seasonal start-up.
Q: How do I select the correct series length variant of the HC-9.311-JCG agricultural gearbox for my implement geometry?
The HC-9.311-JCG is available in 14 length variants (L: 375–1500 mm). Measure the required centre-to-centre distance between your tractor PTO output and implement input shaft in working position, then select the series variant whose L dimension best matches that measurement. For detailed assistance, email your implement specification and our engineers will recommend the correct suffix.
Ready to Specify the HC-9.311-JCG for Your Project?
Send your enquiry or technical drawing to our team. We’ll confirm lead time, pricing, and availability within one working day for UK orders.
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