{"id":3541,"date":"2026-03-17T01:22:00","date_gmt":"2026-03-17T01:22:00","guid":{"rendered":"https:\/\/agriculturalgearboxes.top\/?post_type=product&p=3541"},"modified":"2026-03-17T06:29:15","modified_gmt":"2026-03-17T06:29:15","slug":"agricultural-grain-harvester-reversing-gearbox-for-grain-harvesting","status":"publish","type":"product","link":"https:\/\/agriculturalgearboxes.top\/fr\/product\/agricultural-grain-harvester-reversing-gearbox-for-grain-harvesting\/","title":{"rendered":"Bo\u00eete de vitesses r\u00e9versible pour moissonneuse-batteuse agricole"},"content":{"rendered":"
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Agricultural Gearbox \u00b7 UK Supplier<\/p>\n

Grain Harvester Reversing Gearbox<\/h1>\n

Engineered for British grain farming \u2014 eliminate blockages, improve field maneuverability, and maximise harvest yield with industrial-grade precision.<\/p>\n

\ud83d\udce7 Get a Free Quote<\/a><\/p>\n<\/div>\n<\/div>\n

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\u00a0\"bo\u00eeteThe grain harvester reversing gearbox is an indispensable mechanical component in modern combine harvesting operations across the United Kingdom. Designed to handle the demands of British agriculture \u2014 where wet autumns, dense cereal crops, and variable field conditions are routine \u2014 this gearbox empowers operators to switch seamlessly between forward and reverse drive. Whether you are harvesting barley in East Anglia, wheat across the Yorkshire Wolds, or oilseed rape in Lincolnshire, the ability to reverse drive direction is critical for clearing blockages, repositioning the machine without field damage, and maintaining continuous throughput during peak harvest windows. Built from QT450 nodular cast iron housings and 20CrMnTi alloy steel shafts, this reversing gearbox delivers durability that matches the rigour of British farming seasons. With a bevel gear configuration and a 1:1.53 transmission ratio, power transfer remains efficient and mechanical losses are kept to a minimum across all operational modes.<\/p>\n<\/div>\n

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Request a Quote \u2014 sales@agriculturalgearboxes.top<\/a><\/div>\n

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\u2699 Technical Specifications<\/h2>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Param\u00e8tre<\/th>\nDetail<\/th>\n<\/tr>\n<\/thead>\n
Nom du produit<\/td>\nGrain Harvester Reversing Gearbox<\/td>\n<\/tr>\n
Mat\u00e9riau du bo\u00eetier<\/td>\nFonte nodulaire QT450<\/td>\n<\/tr>\n
Mat\u00e9riau de l'arbre<\/td>\nAcier alli\u00e9 20CrMnTi (c\u00e9ment\u00e9 et tremp\u00e9)<\/td>\n<\/tr>\n
Type d'engrenage<\/td>\nBevel Gear<\/td>\n<\/tr>\n
Rapport de transmission<\/td>\n1 : 1.53<\/td>\n<\/tr>\n
Bearing Options<\/td>\nQC \/ C&U \/ NTN (configurable on order)<\/td>\n<\/tr>\n
Available Colour<\/td>\nDark \/ Red \/ Custom RAL Finish<\/td>\n<\/tr>\n
P\u00e9riode de garantie<\/td>\n18 Months from Dispatch<\/td>\n<\/tr>\n
Application principale<\/td>\nCombine \/ Grain Harvesters<\/td>\n<\/tr>\n
Marques compatibles<\/td>\nJohn Deere, CLAAS, New Holland, Case IH, Kubota & more<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

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\u2713 Key Product Advantages<\/h2>\n<\/div>\n
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\u26a1 Instant Blockage Clearance<\/h3>\n

Dense, wet crops \u2014 a routine reality of British autumn harvesting \u2014 frequently jam cutting and threshing mechanisms. The reversing gearbox drives material back through the feed channel mechanically, resolving blockages in seconds without requiring the operator to leave the cab. This eliminates the injury risk of manual jam clearing and keeps the combine moving during critical harvest days when every working hour counts against tightening weather windows.<\/p>\n<\/div>\n

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\ud83d\ude80 Enhanced Field Maneuverability<\/h3>\n

UK field layouts \u2014 from the compact paddocks of Shropshire to the long runs of the Lincolnshire Fens \u2014 often demand tight headland turns and precise repositioning. The reversing gearbox allows operators to back up accurately, navigate waterlogged corners, and reposition between tramlines without wide arcing passes, saving time and protecting unharvested crop margins from unnecessary wheel damage.<\/p>\n<\/div>\n

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\ud83d\udee1 Improved Operator Safety<\/h3>\n

UK Health and Safety Executive data consistently identifies crop jam clearing as a leading cause of harvesting injuries. By resolving jams mechanically, this gearbox keeps operators safely inside the cab, away from rotating cutting mechanisms. Farm managers can demonstrate a measurable reduction in manual intervention incidents, supporting compliance with UK farm safety regulations and satisfying insurers and agronomists alike.<\/p>\n<\/div>\n

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\ud83d\udd27 Extended Machine Lifespan<\/h3>\n

Every forced jam clearance places stress on belts, chains, and threshing concaves. Resolving jams quickly and gently distributes mechanical stress more evenly, reduces peak shock loads, and minimises premature wear on adjacent drivetrain components. The result for UK operators is fewer unplanned repair bills during harvest, a longer working life for the whole combine, and lower total cost of ownership across multiple seasons.<\/p>\n<\/div>\n

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\ud83c\udfc3 Better Crop Recovery<\/h3>\n

Missed strips and incomplete passes cost UK grain farmers measurable yield losses each season. With the ability to manoeuvre back into position without wide turns or lengthy repositioning time, operators can clean up missed patches quickly, recovering additional tonnes of wheat, barley, or oilseed rape that would otherwise be left standing or further damaged by subsequent passes across the same ground.<\/p>\n<\/div>\n

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\u2699 Operational Flexibility<\/h3>\n

From late spring oilseed rape with its slippery stalks to autumn winter barley in variable moisture conditions, the reversing gearbox accommodates diverse crop types without mechanical reconfiguration. Speed adjustment capability ensures the threshing mechanism matches real-time crop density and stalk toughness, protecting grain sample quality and reducing threshing losses that affect final farm gate value.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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\ud83d\udd0e How the Grain Harvester Reversing Gearbox Works<\/h2>\n<\/div>\n
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The system begins with the engine transmitting rotational torque through the input shaft directly into the gearbox casing. Inside, a precision-cut bevel gear set \u2014 machined from case-hardened 20CrMnTi alloy steel \u2014 intercepts this energy and redirects it according to the selected drive mode. The gears are set at engineered angles to achieve the required 1:1.53 ratio, ensuring the output shaft turns at the correct speed relative to the harvester’s header and threshing drum.<\/p>\n

When the operator activates the shift mechanism \u2014 via a manual lever or an integrated electronic switch on modern harvester platforms \u2014 a sliding gear element repositions within the gear train. This repositioning introduces an additional gear mesh that inverts the rotation direction of the output shaft. The clutch momentarily decouples engine power during this transition, preventing gear impact damage and ensuring smooth direction change even under torque. Once reverse is engaged and the clutch reconnects, power flows out through the output shaft in the reversed direction, driving the header and feeder mechanisms backwards.<\/p>\n

Oil seals and precision gaskets maintain the internal lubrication environment throughout extended shifts, keeping all rotating components within designed temperature and friction tolerances. The QT450 nodular cast iron housing provides the structural rigidity needed to contain these forces, even when subjected to sudden shock loads during blockage reversal cycles \u2014 a common occurrence in the high-moisture harvest conditions experienced across English and Scottish grain-growing regions every season.<\/p>\n

UK Agricultural Applications at a Glance<\/h3>\n
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Application<\/th>\nCrop \/ Scenario<\/th>\nReversing Benefit<\/th>\n<\/tr>\n<\/thead>\n
Blockage Clearance<\/td>\nWet wheat & barley<\/td>\nMechanical reversal in under 10 seconds<\/td>\n<\/tr>\n
Tight Headlands<\/td>\nSmall UK field boundaries<\/td>\nPrecise back-up without wide turns<\/td>\n<\/tr>\n
Missed Strips<\/td>\nLodged cereal patches<\/td>\nRe-enter and recover yield easily<\/td>\n<\/tr>\n
Waterlogged Terrain<\/td>\nSoft ground escape<\/td>\nReverse safely to firm ground<\/td>\n<\/tr>\n
Threshing Adjustment<\/td>\nOilseed rape \/ OSR<\/td>\nMatch drum speed to crop density<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n

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\ud83c\udf89 Customer Success Case \u2014 UK Arable Farm, Cambridgeshire<\/h2>\n<\/div>\n

Client:<\/strong> Whitmore Farming Ltd \u2014 Ely, Cambridgeshire, England
\nEquipment:<\/strong> CLAAS LEXION 750 Combine Harvester
\nApplication:<\/strong> Winter wheat and spring barley, 850 hectares per season<\/p>\n

The farm manager at Whitmore Farming contacted us in June seeking a replacement grain harvester reversing gearbox compatible with their CLAAS LEXION platform. The original unit had developed bearing wear after five seasons of intensive use, and the lead time from the original equipment manufacturer was over four weeks \u2014 unacceptable heading into peak harvest. Our engineering team matched the shaft specifications, mounting bolt pattern, and gear ratio within 24 hours of receiving technical drawings, and dispatched a finished replacement gearbox to the farm in eight working days.<\/p>\n

The farm reported zero unplanned blockage-related stoppages during the entire 2023 wheat harvest \u2014 the first clean season in recent memory during a notoriously wet August. The 18-month warranty provided confidence for the following OSR campaign. Whitmore Farming has since ordered two further units as strategic spares for the broader fleet.<\/p>\n<\/div>\n

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\u2605 What UK Farm Engineers Say<\/h2>\n<\/div>\n
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\u2605\u2605\u2605\u2605\u2605<\/p>\n

“We fitted this reversing gearbox to our New Holland CR8.90 before last harvest. The difference in blockage recovery time was night and day. Fitting was straightforward and the technical drawings matched our machine perfectly. Would not hesitate to order again for the rest of our fleet.”<\/p>\n

\u2014 James Holroyd, Farm Engineer<\/p>\n

North Yorkshire, England<\/p>\n<\/div>\n

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\u2605\u2605\u2605\u2605\u2605<\/p>\n

“Solid casting, good shaft material, and the NTN bearings arrived pre-fitted and greased. Competitive price compared to OEM, and lead time from enquiry to delivery was under two weeks. The quality stands up well under Lincolnshire harvest conditions. Happy to recommend to any fleet manager.”<\/p>\n

\u2014 Susan Bartlett, Machinery Manager<\/p>\n

Lincolnshire, England<\/p>\n<\/div>\n

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\u2605\u2605\u2605\u2605\u2605<\/p>\n

“We had a custom ratio requirement for a John Deere S790 and the team was highly responsive. Shaft dimensions, splines, and mounting face all came back exactly as specified. Two full harvest seasons completed without a single issue. An excellent supplier for specialist agricultural gearbox work.”<\/p>\n

\u2014 David Ashworth, Agricultural Contractor<\/p>\n

East Anglia, England<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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\ud83c\udfed Manufacturing Capability & Custom Engineering<\/h2>\n

Our manufacturing facility has been producing agricultural gearboxes for over 18 years, supplying B2B clients across the United Kingdom, Europe, and international markets. Our engineering team works directly with UK farm machinery dealers, agricultural contractors, and equipment rebuilders to design and manufacture grain harvester reversing gearboxes that meet exact application requirements \u2014 not generic catalogue compromises.<\/p>\n

Full customisation is available across all critical parameters: shaft rotation direction, transmission ratio, input\/output speed, mounting orientation, bearing brand, housing colour, and sealing specification. Whether you are replacing a worn OEM unit on a John Deere, CLAAS, New Holland, Case IH, or Kubota platform, or specifying a bespoke gearbox for a custom-built harvester, our technical staff can reconfigure existing designs or develop new solutions from your engineering drawings or sample parts. Shaft rotation, speed ratio, input torque, output torque, and mounting position are all considered during every custom build consultation.<\/p>\n

We also supply the full range of agricultural gearboxes including rotary cutter gearboxes, rotary tiller gearboxes, round baler gearboxes, feed mixer gearboxes, lawn mower gearboxes, square baler gearboxes, and PTO shaft assemblies \u2014 making us a single-source supplier for UK farm machinery parts procurement teams managing multi-machine fleets.<\/p>\n

Obtenir un devis<\/a><\/p>\n<\/div>\n


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\u2753 Foire aux questions<\/h2>\n<\/div>\n
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\nWhat is the typical price of a grain harvester reversing gearbox for UK agricultural contractors, and how do I get a custom quote for my combine model?<\/summary>\n

Pricing varies depending on specification, bearing grade, custom modifications, and order volume. UK agricultural contractors and fleet managers are encouraged to contact our sales team directly at sales@agriculturalgearboxes.top<\/a> for a tailored quote. Bulk pricing and long-term supply agreements are available for machinery dealers and OEM rebuilders across England, Scotland, and Wales.<\/p>\n<\/details>\n

\nWhich combine harvester brands does this reversing gearbox fit, and is it compatible with John Deere and CLAAS models commonly used on UK arable farms?<\/summary>\n

This reversing gearbox is engineered to serve as a direct-fit or adaptable replacement for John Deere, CLAAS, New Holland, Case IH, Kubota, Lovol, Zoomlion, Krone, and other major brands used across the UK. For specific CLAAS LEXION or John Deere S-Series models, please share your machine model number and our team will confirm compatibility or configure a matched specification within 24 hours.<\/p>\n<\/details>\n

\nHow long does delivery take to England, Scotland, or Wales, and where can I find a reliable grain harvester gearbox supplier serving the UK market?<\/summary>\n

Standard delivery to mainland UK typically takes 8 to 14 working days from order confirmation. Express manufacturing lead times are available for urgent pre-harvest requirements. We ship directly to UK farm addresses, agricultural machinery dealerships, and engineering workshops. Contact us at sales@agriculturalgearboxes.top<\/a> to confirm current lead times ahead of your harvest season.<\/p>\n<\/details>\n

\nWhat materials are used in the gearbox housing and shaft, and how well do they hold up in wet British harvest conditions where mud and moisture are constant?<\/summary>\n

The housing is cast from QT450 nodular cast iron, which provides excellent rigidity and vibration damping. Shafts are machined from 20CrMnTi alloy steel, then carburised and surface-hardened for wear resistance. This material pairing is specifically well-suited to the mud, moisture, and crop debris typical of British autumn harvests, performing reliably across extended daily operating shifts at the height of the UK cereal harvest season.<\/p>\n<\/details>\n

\nHow exactly does a reversing gearbox on a grain harvester clear a blockage, and when should I use the reverse function during a typical UK harvest shift?<\/summary>\n

When a blockage occurs in the header or feeder house, the operator activates the shift mechanism to engage reverse. The gearbox inverts the output shaft direction, running crop material back out of the jam point without manual intervention. This is most frequently needed during wet cutting conditions, when harvesting dense lodged wheat or high-moisture barley \u2014 situations common across English and Scottish grain regions in late August and September.<\/p>\n<\/details>\n

\nCan the transmission ratio or shaft configuration of the reversing gearbox be fully customised for a specialist harvester or bespoke machine build in the UK?<\/summary>\n

Yes, full customisation is available. Our engineering team can adjust shaft rotation direction, gear ratio, input\/output speed, mounting face dimensions, spline specification, and housing colour to match any application. This service is actively used by UK agricultural engineering workshops, custom combine rebuilders, and specialist machinery manufacturers. Send your drawings or sample components and we will engineer a matched solution from scratch.<\/p>\n<\/details>\n<\/div>\n<\/div>\n

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Ready to Order or Need Technical Advice?<\/h3>\n

Our engineering team is available to assist UK grain farmers, agricultural contractors, and machinery dealers with specifications, compatibility checks, and custom designs for any combine harvester platform.<\/p>\n

Contact Us: sales@agriculturalgearboxes.top<\/a><\/p>\n<\/div>\n

\u00e9dit\u00e9 par gzl<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

Grain harvester reversing gearbox \u2014 bevel gear, 1:1.53 ratio. QT450 nodular cast iron housing, 20CrMnTi hardened shafts, precision oil seals. Fits John Deere, CLAAS, New Holland.<\/p>","protected":false},"featured_media":3577,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[2001],"product_tag":[],"class_list":{"0":"post-3541","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-agricultural-gearbox","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/agriculturalgearboxes.top\/fr\/wp-json\/wp\/v2\/product\/3541","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agriculturalgearboxes.top\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/agriculturalgearboxes.top\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/agriculturalgearboxes.top\/fr\/wp-json\/wp\/v2\/comments?post=3541"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agriculturalgearboxes.top\/fr\/wp-json\/wp\/v2\/media\/3577"}],"wp:attachment":[{"href":"https:\/\/agriculturalgearboxes.top\/fr\/wp-json\/wp\/v2\/media?parent=3541"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/agriculturalgearboxes.top\/fr\/wp-json\/wp\/v2\/product_brand?post=3541"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/agriculturalgearboxes.top\/fr\/wp-json\/wp\/v2\/product_cat?post=3541"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/agriculturalgearboxes.top\/fr\/wp-json\/wp\/v2\/product_tag?post=3541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}