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Product Description
The heart of any multi-speed manual transmission or industrial gearbox is its shaft assembly. The precise interaction between the input shaft, countershaft, and output shaft determines the machine's performance, efficiency, and reliability.
Yile Machinery is a specialist OEM supplier of complete, fully-assembled gearbox shaft sets. We provide a "drop-in" solution, manufacturing and assembling all components—shafts, gears, splines, and spacers—to your exact specifications, saving you valuable production and assembly time.
A typical multi-speed gearbox assembly consists of two primary parallel shafts:
The Main Shaft (Input/Output Shaft):
This shaft transmits power into and out of the gearbox. It often holds the synchronizers and clutch gears that are engaged by the operator to select a speed. Its straight-line design is critical for efficient power flow.
The Countershaft (Layshaft or "Auxiliary" Shaft):
Running parallel to the main shaft, the countershaft holds a set of fixed gears that are in constant mesh with gears on the main shaft. The different gear pairings on the countershaft are what create the various gear ratios.
By manufacturing both shafts and all gears as a matched set, we ensure perfect alignment, optimal gear mesh, and quiet, reliable operation.
Choosing a fully assembled shaft set from a single supplier offers significant advantages:
Guaranteed Fitment: Eliminates tolerance stacking issues that can occur when sourcing parts from multiple vendors. We guarantee that every gear, bearing, and spacer fits perfectly.
Reduced Assembly Labor: Your assembly line receives a complete, tested, and ready-to-install sub-assembly, streamlining your production process.
Simplified Supply Chain: One supplier, one part number. We manage the complex manufacturing of dozens of individual components for you.
Assured Quality: We take full responsibility for the performance of the entire assembly, from material integrity to final runout testing.
Material Selection: We use high-grade, certified gear steels like 20CrMnTi and 40Cr for their excellent strength and wear characteristics.
Precision Shaft & Gear Manufacturing: Shafts are CNC turned and splined. Gears are cut using precision CNC hobbing and shaping machines.
Targeted Heat Treatment: Components undergo specific heat treatments (such as carburizing and quenching) to create a hard, wear-resistant surface while maintaining a tough, ductile core to handle shock loads.
Precision Assembly: Our technicians expertly press-fit gears and bearings onto the shafts, install retaining clips, and perform final quality checks, including runout and backlash inspection.
We are a trusted manufacturing partner for companies building:
Commercial Truck and Bus Transmissions
Agricultural Machinery Gearboxes (Tractors, Combines)
Construction Equipment Transmissions (Loaders, Graders)
Industrial Multi-Speed Gear Drives
Specialty Vehicle Powertrains
Get a Quote for Your Complete Shaft Assembly
Streamline your production and guarantee quality. Submit your assembly drawings and specifications, and our engineering team will provide a comprehensive quote for a fully-assembled, drop-in solution.
