Qingdao Hailong Machinery Technology Co., Ltd. is one of the leading manufacturers and suppliers of tractor gearbox housing in China, featured by quality products and good service. Welcome to buy durable tractor gearbox housing made in China here and get pricelist from our factory. Also, customized service is available.
Core Advantages
- Heavy-load Bearing Structure: Integral casting molding, box-type reinforced design, HT250/HT300 gray cast iron, QT500-7 ductile iron, tensile strength ≥250MPa, bending strength ≥350MPa, capable of withstanding heavy-load impact and continuous torque of agricultural machinery.
- High-precision Sealing Design: Key joint surface machining precision ≤±0.01mm, surface roughness Ra≤1.6μm, reserved precise oil seal installation groove, excellent sealing performance, no oil leakage risk, adapting to agricultural machinery outdoor operation environment.
- Wear-resistant and Corrosion-resistant Performance: Castings undergo aging treatment to eliminate internal stress, key transmission surfaces undergo quenching/nitriding treatment, hardness HB180-240, wear-resistant and corrosion-resistant, adapting to humid and dusty complex working conditions in fields, service life ≥8 years.
- Agricultural Machinery Special Adaptation: Suitable for 15-300 horsepower tractors, reserved installation interfaces for gears, shafts, and shift mechanisms, hole system position tolerance ≤±0.02mm, high assembly precision of transmission components, stable operation without jamming.
- Stable and Reliable: UT/MT Level 2 flaw detection, no sand holes, air holes or cracks inside, deformation ≤0.03mm under dynamic operation, adapting to long-time continuous operation with low failure rate.
Adaptable Industries & Scenarios
- Core Industries: Agricultural Machinery Manufacturing, Construction Machinery, Agricultural Machinery Maintenance and Modification;
- Typical Applications: Wheel Tractors, Crawler Tractors, Agricultural Transport Vehicles, Small Agricultural Machinery Transmission Assemblies.
Key Technical Specifications
|
Parameter Type |
Core Specifications |
|
Material Type |
HT250/HT300 Gray Cast Iron, QT500-7/QT600-3 Ductile Iron |
|
Casting Process |
Resin Sand Casting, Lost Foam Casting |
|
Adaptable Horsepower |
15-300HP (Customizable) |
|
Size Range |
Length 300-1200mm, Width 200-800mm, Height 250-900mm |
|
Precision Standard |
Dimensional Tolerance Grade CT8-CT10, Hole System Position Tolerance ≤±0.02mm |
|
Mechanical Properties |
Tensile Strength ≥250MPa, Hardness HB180-240, Impact Toughness ≥15J/cm² |
|
Surface Quality |
Joint Surface Ra≤1.6μm, Flaw Detection Standard UT/MT Level 2 |
|
Treatment Process |
Natural Aging 28 Days/Artificial Aging, Key Surface Quenching/Nitriding Treatment |
Quality & Service
- Test Reports: Material analysis report, dimensional inspection report, flaw detection report, sealing performance test report;
- After-sales Guarantee: 1-year warranty, providing installation guidance, precision calibration service, lifelong technical support;
- Customization Service: Customized horsepower adaptation, size specification, installation interface on demand, supporting processing according to drawings and collaborative R&D;
- Delivery Cycle: Sample/small batch 30-60 days, large batch 60-120 days, emergency order as fast as 25 days.
Process
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