Heavy Duty Commercial Truck Crown Wheel & Pinion Gear Set — Middle Axle (WG9114320251 / 199014320125) 100% brand new precision OEM standard replacement middle drive axle crown wheel and pinion gear set (ring & pinion). Precision spiral bevel gears with hypoid high-torque teeth design, forged from 20CrMnTi alloy case-hardened steel. Widely applied to heavy duty dump trucks, tractor heads, cargo vehicles, and multi-axle chassis. Export anti-rust packaging and ready for global ocean freight dispatch to your designated port. |
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Technical Specifications
| Product Identity |
| Product Name | Commercial Truck Middle Axle Ring & Pinion Gear Set |
| Part / OE Number | WG9114320251 / 199014320125 |
| Product Category | Commercial Vehicle Driveline, Differential & Axle Spare Parts |
| Material & Fitment |
| Tooth Ratio / Marking | Standard Heavy Duty Axle Gear Ratio (Stamped Pinion/Crown Ring) |
| Axle Location | Middle Drive Axle Differential Reducer Unit |
| Heat Treatment | Gas Carburizing + Quenching + Surface Shot Peening |
| Function | Changes Drive Angle by 90° & Provides Final Ratio Speed Reduction / Torque Multiplier |
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Key Features & Product Advantages
Carburized & Case-Hardened Alloy Steel Premium forged alloy steel with deep carburizing delivers ultra-high surface hardness and shock resistance against gear tooth pitting. | Precision Spiral Tooth Geometry Computer-matched gear teeth profile ensures maximum contact area, ultra-smooth mesh engagement, low running noise, and reduced backlash. |
Optimized Power Transfer for Middle Axles Designed to handle dual-axle torque distribution in 6x4 and 8x4 heavy truck tandem drivelines without gear distortion. | Micro-Polished Contact Surfaces Finely lapped gear teeth surfaces minimize friction, lower operational temperatures inside the differential carrier, and extend gear oil life. |
Matched Set Delivery Crown wheel (ring gear) and drive pinion are dynamically lapped and supplied as a factory-matched pair to guarantee easy mesh alignment during installation. |
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Product Applications
Heavy Duty Tipper & Dump Trucks Transmits heavy driving torque needed for loaded slope climbing and off-road construction site transport. | Long-Haul Highway Tandem Tractors Delivers long-distance durability and reliable gear meshing across 6x4 multi-axle freight haulers. |
Concrete Mixers & Heavy Chassis Provides rugged final drive reduction for heavy industrial chassis operating under continuous stop-and-go load conditions. | Differential Overhaul & Fleet Repair Direct OEM match for replacing chipped, worn, or noisy crown gear and pinion sets during differential carrier overhauls. |
Packaging & Shipping
Packaging Each gear set degreased, coated with heavy-duty anti-rust oil, wrapped in VCI anti-corrosion protective film, cushioned in individual shockproof inner boxes, and crated in reinforced wooden export boxes (or stacked on pallets). | Shipping Shipped via ocean freight (FCL full container load or LCL bulk cargo) to your designated seaport. Full export documentation provided. |
About Shandong Chengda Auto Sale Co., Ltd.
Who We Are Shandong Chengda Auto Sale Co., Ltd., established in 2005, is one of the qualified manufacturers of trailers, semi-trailers, tractor heads, dump trucks, engineering machinery, and trailer parts. Annual export value above 50 million USD, revenue nearly 600 million RMB. | Global Partners Long-term business relationships with world-famous enterprises including SINOTRUK, SHACMAN, FAW, DFAC, XUGONG Group, LIUGONG Group, SEM Group, etc. Mature after-sale systems and professional sales team. |
FAQ (Frequently Asked Questions)
1. Who are we? Based in Shandong, China, exporting since 2017. Sales to Africa (60%), Southeast Asia (20%), South Asia (10%), South America (5%), Oceania (3%), Mid East (2%). About 101-200 people in our office. | 2. How can we guarantee the quality? Always a pre-production sample before mass production; always final inspection before shipment. |
3. What can you buy from us? Truck (Dump Truck, Tractor Truck), Semi Trailer (Low Bed Truck Trailer, Flatbed Trailer, Fuel Tanker Semi Trailer, Bulk Cement Trailer), Low Bed Trailer, Trailer Parts, Heavy Truck Crown Wheel Pinion Sets & Differential Spare Parts. | 4. Why should you buy from us? Established in 2005, our plant is one of the qualified manufacturers of various trailers and heavy truck parts suppliers. Factory direct price, customized products, diversified inventory, leading technology, professional sales team. |
5. What services can we provide? Delivery Terms: FOB, CFR, CIF, EXW; Payment Currency: USD, EUR, JPY, CAD, AUD, HKD, GBP, CNY, CHF; Payment Type: T/T, L/C, MoneyGram, Credit Card, PayPal, Western Union, Cash; Languages: English, Chinese, Spanish, Portuguese, Arabic, French. |
Customer Visits
Customers from more than 80 countries visit us, from East Africa, West Africa, South America, Asia, etc.
Certifications
ISO 9001, CE, and international commercial vehicle driveline gear quality management standard certifications.
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