Product Description
The Vehicle gearbox main input shaft is where engine power meets the transmission gears, and it must do so with absolute precision. At our 60-mu Hubei facility, we manufacture these shafts using 20CrMnTi alloy steel, known for its incredible toughness. We subject every Vehicle gearbox main input shaft to high-frequency quenching in our fully automated heat treatment line, achieving a surface hardness of HRC58-62. This ensures that the splines and gear teeth can handle thousands of gear shifts without significant wear, keeping the transmission quiet and efficient for the life of the vehicle.
We have spent decades refining our grinding processes to ensure that the Vehicle gearbox main input shaft operates with minimal runout (≤0.02mm). This level of accuracy reduces internal friction and heat, which is essential for both manual and automatic transmissions. Our history as a Sany supplier proves our ability to maintain quality over high-volume runs. When you source this Vehicle gearbox main input shaft, you are getting a part that has been 100% inspected for dimensional accuracy and metallurgical integrity, ensuring smooth power transfer in sedans, SUVs, and light trucks.

Technical Parameters
|
Material |
20CrMnTi / 42CrMo Alloy Steel |
|
Surface Hardness |
HRC 58 – 62 |
|
Runout Tolerance |
≤0.02mm |
|
Speed Range |
500 – 8000 r/min |
|
Surface Finish |
Ra ≤ 0.8μm |
Application Areas
Core power transmission for manual and automatic gearboxes in passenger cars, SUVs, and light commercial trucks.
Customization Capability
We support non-standard spline counts and shaft lengths. We can sign supply guarantee contracts to ensure on-time delivery for custom industrial-scale orders.
Packaging & Shipping
- Packaging: Protective oil coating with custom-fitted protective sleeves in crates.
- Lead Time: 10-15 days for standard units; 20-30 days for custom batches.
- Terms: All trade terms including EXW, FOB, and DDP are accepted.
FAQ
Q: Is the lead time faster for repeat orders?
A: Yes, repeat orders are prioritized and typically have a significantly faster lead time.
Q: Do you have your own R&D team?
A: Yes, we have 7 R&D technicians and 1 Senior Engineer on-site.
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