Transmission Counter Shaft 18729 Fast Gear
| Synchronizer Assembly | Transmission Counter Shaft |
| Product Number | 18729 |
| MOQ | 1 |
| Warranty period | 3 Months |
| Package | The packaging will be treated to prevent drops, rust, and impacts. |
| Application | This typically refers to the secondary shaft part of the gearbox in China National Heavy Duty Truck (HOWO) series trucks, and is suitable for models such as the new HOWO A7, F2000, and F3000. |
| Original | China |
Product Description
Product Introduction
Structure: A precision-machined integral shaft made from high-strength nickel-chromium alloy steel, featuring multi-stage splined sections for mounting counter gears. The surface is carburized, quenched, and ground to achieve a hardness of HRC 58–62, ensuring extreme wear and fatigue resistance. The shaft is coated with a black oxide finish for corrosion protection.
Performance: The high-hardness splined sections withstand extreme torque and impact forces, while the precision-machined surface ensures concentricity and minimal backlash. The integral design eliminates the risk of shaft separation, ensuring reliable operation under heavy-duty conditions.
Core Function
Torque Transmission: Transfers torque from the input shaft gear to the output shaft gear, enabling gear ratio changes in the transmission.
Gear Support: Provides a rigid mounting platform for counter gears, ensuring precise alignment and smooth meshing.
Heavy-Duty Durability: The high-strength alloy steel and heat treatment withstand frequent shifts and extreme torque in heavy hauling, ensuring long service life.
Built for Heavy-Duty Performance — Direct from the Factory
When your fleet depends on reliable power transfer, the counter shaft is not a part you compromise on. The Mettlead 18729 Fast Gear Transmission Counter Shaft is engineered from nickel-chromium alloy steel, carburized and ground to HRC 58–62 hardness, delivering the wear resistance and fatigue life that commercial vehicle transmissions demand. Factory-direct pricing. Consistent quality. Ready to ship.
Features & Benefits
Engineered Material, Proven Durability
- Nickel-Chromium Alloy Steel Construction — High tensile strength handles sustained torque loads without deformation, extending service intervals and reducing fleet downtime.
- Carburized, Quenched & Precision-Ground Surface — Achieves HRC 58–62 case hardness for extreme wear and fatigue resistance under continuous heavy-load cycling.
- Multi-Stage Splined Sections — Precision-machined integral shaft design ensures accurate gear meshing and smooth power delivery across all speed ranges.
- Black Oxide Corrosion Protection — Provides a stable protective layer against moisture and oxidation during storage and transit, maintaining dimensional integrity on arrival.
- Direct-Fit for Fast Gear Transmissions — Drop-in replacement eliminates modification costs and accelerates workshop turnaround.
Technical Specifications
| Parameter | Detail |
|---|---|
| Part Number | 18729 |
| Application | Fast Gear Transmission (Chinese brand trucks) |
| Component Type | Transmission Counter Shaft |
| Material | High-Strength Nickel-Chromium Alloy Steel |
| Heat Treatment | Carburizing + Quenching + Precision Grinding |
| Surface Hardness | HRC 58–62 |
| Surface Finish | Black Oxide Coating |
| Shaft Design | Integral shaft with multi-stage splined sections |
| Manufacturing | CNC precision machining |
| Quality Standard | Strict dimensional & metallurgical inspection |
| Packaging | Neutral / White-label / Custom packaging available |
| Origin | China |
OEM/ODM Capability
Mettlead supports flexible cooperation models for distributors, wholesalers, and fleet operators:
- White-Label Packaging — Ship under your own brand with custom boxes, labels, and documentation.
- Custom Packaging Solutions — Bulk export packing, individual retail-ready boxes, or branded kits per your specification.
- Strict Quality Control — Each shaft undergoes dimensional inspection, hardness testing, and surface finish verification before dispatch.
- Scalable Production — Stable capacity for both trial orders and large-volume contracts with consistent lead times.
- Technical Support — Engineering team available for fitment confirmation, drawing review, and cross-reference matching.
Frequently Asked Questions
What trucks does the 18729 counter shaft fit?
This shaft is designed as a direct replacement for Fast Gear transmission systems commonly used in Chinese brand heavy-duty trucks including Shacman, Foton, and Sinotruk models equipped with Fast gearboxes.
What is the expected service life?
With HRC 58–62 case hardness and nickel-chromium alloy steel construction, the shaft is engineered to meet or exceed OE fatigue life under standard commercial operating conditions.
Can I order with my own brand packaging?
Yes. Mettlead offers full white-label and custom packaging services at no excessive surcharge. Minimum order quantities apply — contact us for details.
What is the typical lead time?
Standard orders ship within 7–15 working days depending on quantity. Stock availability for common parts can reduce this further.
Do you provide quality certifications or test reports?
Hardness test reports, dimensional inspection records, and material certificates are available upon request with each shipment.
Get a Competitive Quote Today
Ready to secure reliable Fast Gear transmission counter shafts at factory-direct pricing? Send us your quantity requirements and shipping destination — our team responds within 24 hours with pricing, lead time, and packaging options.
