Product

Sand Casting Gearbox Housing | Steel & Iron Transmission Case

Sand Casting Gearbox Housing is our typical product, engineered to deliver exceptional performance and reliability in the most demanding industrial environments. With many years expercence in sand casting process, we specialize in producing high-quality castings that meet the strictest dimensional and mechanical requirements for power transmission applications.

Sand Casting Gearbox Housing: Material Options

As a leading manufacturer of Sand Casting Gearbox Housing, Leesh offer a comprehensive range of material solutions to suit your specific application needs.

Steel Sand Casting

Ductile Iron Sand Casting

Gray Iron Sand Casting

Material Category	China (GB)	USA (ASTM/SAE)	Europe (EN)	Australia (AS/NZS)
Gray Cast Iron	HT200, HT250	Class 30, Class 40	EN-GJL-250, EN-GJL-300	Grade 200 (ISO 185: Type 200 / EN-GJL-200)
Ductile Iron	QT400-18, QT500-7	65-45-12, 80-55-06	EN-GJS-400-18, EN-GJS-500-7	(Often uses EN/ISO) EN-GJS-400-18, EN-GJS-500-7
Cast Steel	ZG230-450	WCB, 1030, 1045	GP240GH, GP280GH	(Commonly adopts EN/ISO)
Structural Steel (for Welding)	Q235, Q345	A36, A572 Gr.50	S235, S355	Grade 250, Grade 300, Grade 350 (AS/NZS 3678 / 3679.1)

Sand Casting Gearbox Housing: Precision Engineering

Our Sand Casting Gearbox Housing production process combines advanced molding technology with high quality control to ensure consistent precision and performance. We produce sand cast transmission housing with tight dimensional tolerances and smooth surface finishes, eliminating the need for excessive post-processing. Our heavy duty gearbox housing is designed to withstand extreme loads, high temperatures and harsh operating conditions, ensuring long service life and minimal maintenance.

Quality Assurance & Global Delivery

We implement strict quality control measures at every stage of production, from raw material inspection to final dimensional testing and pressure testing. Our ISO-certified facility ensures that every casting meets or exceeds international standards. We ship to clients worldwide with reliable logistics partners, guaranteeing on-time delivery and competitive pricing. Whether you need standard or custom gearbox housings, we are your trusted partner for all sand casting needs.

Manufacturing Method	Sand Casting Services (Resin Sand, Procated Sand Stack Castings, Clay Sand, Water glass sand, Green Sand,lost foam )
Material Standard	GB, ANSI, BS, DIN, JIS, ASTM, ASME, AISI, etc carbon steel, low carbon steel, middle carbon steel, G35, G45, WCB, WCA, WCC, ISO 340-550, etc. Alloy Carbon steel: G25CrMo4, Heat Resistant Steel, etc. Stainless Steel: SUS 304, 304L, 316, 316L, CF8, CF8M, G-X7CrNiNb1189, etc. AS2074 or according to customer specific requirement. Ductile Iron:A536-Gr.60-40-18,GGG40,GGG50,FCD40,FCD50,Gr370-17,Gr420-12,etc Grey Iron:EN-GJL-250 Casting,A48-No.20,25,30,GG10,GG15,GG20,FC10,FC15,FC20,Grade 150,180,220,FGL150,FGL200,FGL250,etc
Weight Range	1 kg to 100 Tons
General Casting Tolerance	CT8-CT12
Design Software	UG, Pro-E, Inventor
Dwg Format	STP, STEP, IGS,STP,X_T ,DXF,DWG , Pro/E, PDF, SLDPRT
Mould Manufacturing	Yes
Casting Stimulation	Yes
Ultimate machining tolerance	0.005mm
Quality Control	RT,UT,MT,PT,CMM,SCAN,Chemical and Mechanical Property Testing,Spectrometer,etc
Finish Roughness	Ra12.5-Ra25 according to customer requirement
Logo/ID	Silk-screening, Laser Marking, Engrave,Painting
Heat Treatment	Normalization, Annealing, Quenching and Tempering, Case Hardening, Nitriding, Carbon Nitriding, Induction Quenching,etc
Surface Treatment	Shot/sand blast, Polishing, Surface Passivation, Painting , Anodizing,Powder coating, ED- Coating, Chrome Plating, zinc-plate, Dacromat coating, Finish Painting,hot-dip galvanizing, etc

Common FAQs About Leesh Sand Casting

1. What is sand casting?

Sand casting is a casting method that uses sand as the molding material to produce castings. It is widely used due to its advantages such as readily available and low-cost materials, simple equipment, easy operation, and no restrictions on casting alloy types, shapes, sizes, or production scales.

2. What materials can Leesh supply for sand casting?

Leesh provides various materials including Carbon Steel, Alloy Steel, Stainless Steel, Grey Iron, and Ductile Iron. These materials comply with international and national standards such as ASTM, SAE, AISI, ACI, DIN, EN, ISO, and GB.

3. What is the weight range of castings Leesh can produce?

Cast Steel: 50Kg – 25,000Kg
Cast Iron: 0.1Kg – 3,000Kg

4. What sand casting processes does Leesh adopt?

For Cast Steel: Water glass sand, resin sand, coated resin sand (Hot-Box & Shell Molding)
For Cast Iron: Resin sand, green sand, coated resin sand (Hot-Box & Shell Molding)

5. What are the key technical specifications of Leesh’s Green sand casting?

Dimensional tolerance: CT8–CT12 (per ISO 8062)
Surface roughness: Ra 6.3–25 μm
Max part weight: 0.1 kg – 25,000 kg

6. Which industries does Leesh’s sand casting serve?

Leesh’s sand casting solutions are suitable for diverse industries including construction, machinery, automotive, and energy.

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