Agricultural Tractor Gearbox Housing Casting Manufacturer

If you are looking for reliable China casting manufacturer to supply custom tractor gearbox housing, tractor rear axle housing and other agricultural machinery cast iron parts, welcome to send us your drawing, sample or detailed requirements. Our professional engineering & sales team will reply within 24 hours, provide competitive factory wholesale price, free material suggestion and custom production solution for your farm machinery project. Inquiry now to get the best bulk order price of tractor transmission housing casting! Gina@guokuncasting.com or WhatsApp & Wechat 86-18132789710

Agricultural Castings

Description

As a professional China metal casting factory located in Baoding, Hebei, Guokun Machinery focuses on high-quality agricultural machinery casting parts, especially tractor gearbox housing, tractor transmission housing, tractor rear axle housing, agricultural gear box casting and heavy-duty farm machinery cast iron housings. We integrate independent casting workshop, CNC machining workshop, surface treatment line and quality inspection lab, providing one-stop OEM & ODM custom casting service for global agricultural equipment manufacturers, tractor assemblers, machinery distributors and metal casting importers worldwide.

Sand casting cast iron gear reducer housing produced by Baoding Guokun

Product Introduction: Tractor Gearbox Housing Casting

Our core product – tractor gearbox housing, also named tractor transmission housing, tractor gear case, farm machinery rear axle housing, tractor differential housing, tractor gearbox casting shell, is the key load-bearing component for wheel tractors, agricultural tractors, farming machinery and farm transport vehicles.

The tractor gearbox housing is a thick-wall hollow casting part with reinforced ribs on outer surface, special square mounting flanges, arc-shaped power output cavities and precise assembly positioning bosses. This structural design improves overall rigidity, anti-vibration performance and impact resistance during heavy farm work, including ploughing, harrowing, rotary tillage and long-distance field transportation.

Inside the tractor gearbox housing, gear sets, drive shafts, differential assemblies and lubricating gear oil are fully accommodated. It bears the whole tractor transmission load, ensures stable power transfer from engine to driving wheels, and protects internal transmission components from mud, water, dust and farm ground impact damage. Our tractor gear box castings fit 40HP, 50HP, 70HP, 90HP, 120HP medium and large wheel tractors, compatible with domestic and international mainstream tractor models.

Casting Material Selection for Tractor Gearbox Housing

We supply multiple cast iron grades customized according to customers’ tractor load requirements, all raw materials with full material test reports, third-party certification available:

– QT450-10 Ductile Iron (Nodular Cast Iron): Best-selling material for heavy-duty tractor gearbox housing, high tensile strength, excellent toughness, anti-shock, anti-fatigue, suitable for large horsepower tractors working in harsh muddy farmland

– QT500-7 Ductile Iron: Super high strength nodular iron, for ultra-heavy load tractor rear axle housing, long service life under continuous heavy operation

– HT250 Gray Cast Iron: Cost-effective option for light & medium tractor transmission housing, good vibration absorption, stable casting performance, lower cost for mass order buyers

All raw pig iron, scrap steel, spheroidizing agent and inoculant are strictly inspected before melting to avoid casting defects like shrinkage, porosity, sand holes and cracks, guarantee consistent mechanical performance of each tractor gearbox casting batch.

Advanced Casting & Machining Technology at Baoding Guokun Foundry

As a local leading Baoding casting manufacturer, we adopt two mature mainstream casting processes to produce tractor gearbox housing, supporting different order quantity and dimensional precision demands:

Lost Foam Casting

Lost foam casting is our dominant craft for tractor gearbox housing mass production. Advantages: smooth casting surface, less machining allowance, high dimensional accuracy, few surface defects, stable production efficiency. Our monthly lost foam casting capacity reaches up to 150 tons, actual stable monthly output around 130 tons for agricultural machinery castings, capable of handling bulk wholesale orders from overseas importers.

Lost foam casting process
Create the foam pattern	Create the foam pattern: The pattern is made from pre-expanded polystyrene (EPS) that is heated in an aluminum die to expand and fuse the beads. The pattern can be carved, machined, or created using injection molding.
Coat the foam	A ceramic refractory coating is applied to the foam to protect it from the sand and create a barrier
Compact the sand	The foam pattern is placed in a flask and surrounded by unbonded sand, which is compacted using a vibration table.
Pour the metal	Pour the metal: Molten metal is poured into the flask, causing the foam to evaporate and leaving behind the metal
Remove the coating	Remove the coating: The refractory coating is removed to expose the metal part.
Surface treatment	Sandblasting and machine process.

Resin Sand Casting (Furan Resin Sand Molding)

For oversized tractor rear axle housing, complex structure transmission housing and small-batch customized casting samples, we use resin sand casting process. Resin sand mold delivers high mold strength, stable size tolerance for large thick-wall cast iron parts, perfect for heavy farm machinery casting components.

Full Post-Casting Processing Service In-House

We provide complete one-stop processing instead of supplying rough casting only, to save clients’ multi-supplier coordination cost:

Shakeout, cleaning, shot blasting to remove surface casting sand and oxide scale
CNC machining: Milling, drilling, tapping, boring for all mounting holes, flange surfaces, bearing seats and assembly positioning surfaces
Surface anti-rust treatment: Quick-drying epoxy anti-rust primer coating as standard finish, uniform paint layer to prevent rust during sea transportation and long-term storage
Strict shell making workshop quality control: Daily measurement of hardener solution concentration and pH value to stabilize casting shell quality, reduce defective casting rate
Final dimensional inspection, hardness test, tensile test, penetration test before packaging

Wide Application Scenarios of Our Cast Iron Tractor Gearbox Housing

Our custom tractor gearbox castings are widely applied in all agricultural equipment fields, covering global farm machinery markets:

– Medium & large wheel agricultural tractors for farming, ploughing, harvesting

– Farm transport tractors, agricultural four-wheel drive vehicles

– Tractor supporting transmission assemblies, tractor gearbox assembly parts

– Agricultural machinery rear axle assemblies, differential housings for farm equipment

– OEM replacement tractor gearbox spare parts for tractor repair shops & distributors

– Custom heavy cast iron housing for construction mini loader, agricultural harvester gear case

Custom Manufacturing Service – OEM & ODM Support by Baoding Guokun Machinery

We offer full flexible custom casting service for all global metal casting buyers, no matter small sample trial orders or bulk mass production orders:

Drawing Customization: Accept customer CAD drawings, PDF drawings, sample reverse engineering, design optimization for tractor gearbox housing casting structure to lower casting cost and improve strength
Material Customization: Free material grade matching suggestion based on your tractor horsepower and working environment, provide full material certification documents for customs clearance
Size & Structure Customization: Modify flange size, hole position, cavity volume, wall thickness of tractor transmission housing according to your tractor assembly requirements
Logo & Mark Customization: Cast customer brand logo, part number, model code directly on gearbox housing surface via casting mold
Packaging Customization: Standard wooden pallet packaging with binding strap for sea freight, moisture-proof packaging to avoid rust during long ocean shipping
Flexible MOQ: Support small trial order for new product testing, large mass order with stable monthly delivery capacity 150 tons

Why Choose Baoding Guokun Machinery as Your Tractor Gearbox Housing Casting Supplier?

Professional agricultural machinery casting factory based in Baoding, Hebei, China, with rich experience in farm machinery ductile iron casting export to Southeast Asia, Europe, South America, Australia and Middle East
Independent complete production chain: Melting workshop, lost foam shell making workshop, casting workshop, CNC machining center, painting workshop, QC inspection lab, no outsourcing critical processes
Stable production capacity: Max monthly casting output 150 tons, current actual monthly production around 130 tons, on-time delivery guaranteed for bulk export orders
Strict daily quality management: Hardening liquid concentration & pH value daily testing in shell making procedure, full batch inspection for every tractor gearbox casting
One-stop service: From mold making, casting, precision machining, anti-rust coating to export packaging, save your procurement time and cost
Factory direct wholesale price, no middleman markup, competitive cost for bulk agricultural casting spare parts
Professional export team: Familiar with FOB, CPT international trade terms, support custom inspection, provide all export documents including commercial invoice, packing list, material test certificate for customs clearance
Long-term after-sales support: Quick response for casting defect solution, fast mold revision service for customized tractor housing