Product Introduction – Function & Working Principle
Structural Core of Mining Gear Transmission Systems
The gearbox housing is the key structural component that connects and protects internal transmission elements such as planetary gears, worm gears, and spur gears. Produced through precision casting using SG50 ductile iron, the housing delivers outstanding compressive strength and fatigue resistance. Advanced CNC machining ensures concentricity and accurate clearances of bearing seats and shaft bores, enabling stable gear meshing and smooth power transmission. The optimized housing structure provides efficient heat dissipation and reliable sealing performance. With high surface finish, friction and wear are minimized while lubrication leakage is effectively prevented. Designed specifically for mining equipment and heavy manufacturing equipment, this gearbox housing operates reliably under harsh conditions and delivers extended service life.
Core Product Strengths – Why Choose Our Gearbox Housing
Engineered Strength, Precision & Reliability
SG50
High-strength SG50 ductile cast iron ensures superior crack resistance and fatigue life.
01
Structure
Finite-element optimized structure improves rigidity, vibration damping, and heat dissipation.
02
CNC machining
Multi-axis CNC machining delivers tight tolerances and excellent interchangeability.
03
Flexible design
Flexible design supports planetary gearbox, worm gear, spur gear, and bevel gear housing systems.
04
ISO
ISO-managed production guarantees stable quality and traceability.
05
Technical Specifications – Precision Parameters
Key Data Customers Focus On
| products |
 |
| Material | SG50 Ductile Cast Iron |
| Dimensional Tolerance | ±0.01–0.05 mm |
| Machining Accuracy | IT6–IT7 |
| Bearing Bore Concentricity | ≤0.02 mm |
| Surface Finish | Ra 1.6 μm |
| Structural Compatibility | Planetary, worm drive, spur & bevel gear systems |
| Dimensions | Customized per drawing |
Quality Control & Inspection System
Multi-Layer Inspection Ensuring Reliable Gearbox Housing Performance
Chemical Analysis
Spectrometric analysis verifies alloy composition to ensure SG50 strength and fatigue resistance.
Mechanical Property Testing
Tensile, hardness, and impact tests confirm load capacity under mining conditions.
MT + UT
Surface and internal defects are eliminated to ensure dense, defect-free castings.
Heat Treatment Traceability
All heat-treatment curves and logs are recorded for consistent hardness distribution.
Dimensional & Runout Inspection
CMM inspection ensures accurate alignment and smooth gearbox operation.
Surface Finish Inspection
Grinding ensures Ra ≤1.6 μm, reducing friction and wear.
Packaging & Protection – Customized Solutions
Tailored Packaging for Heavy Gearbox Housing Transportation
Packaging solutions are customized according to transport mode, destination, and product weight. For bulk cargo shipments, fumigation-free wooden crates combined with reinforced steel frames are applied to prevent deformation and impact damage. Internal supports, EVA padding, and anti-vibration blocks secure the gearbox housing during long-distance transport. All surfaces are treated with anti-rust oil and moisture-resistant wrapping. Clear lifting points and handling marks ensure safe loading and unloading throughout the logistics process.
Fumigation-Free Crate
Steel Reinforcement
Shock
Absorption
Shipping & Global Delivery Capability
Professional Logistics Support for Mining Equipment Projects
We provide global shipping solutions including full container, LCL, bulk cargo, and air freight. A professional export team prepares complete documentation for smooth customs clearance. With reliable logistics partners, we coordinate schedules, manage oversized cargo, and provide shipment tracking, supporting mining projects worldwide with reduced lead time and logistics risk.
Inquiry & Custom Gearbox Housing Solutions
Looking for a dependable gearbox housing manufacturer for mining equipment? Contact us now. Share your drawings or operating conditions, and our engineering team will deliver optimized designs, strict quality control, and reliable delivery. Get your quotation today and secure a long-term transmission partner.
Our address
Head Office: 4#-1616, No.296 Liuquan Road, Zibo City, Shandong China
Branch Office: 208-7B, No.2 Penglai Road, Jianxi District, Luoyang City, Henan Province,China
Phone Number & Whatsapp
+8618606381772
sun@zmindu.cn
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