A single-piece, hot-forged steel spline shaft that transmits torque from the motor to the impeller in large centrifugal / axial fans, HVAC units, blowers and compressor packages—built 100 % to your drawing or sample.
Key service scope
Full OEM/ODM pathway: co-engineer, prototype, test, serial produce
Forging + rough machining + heat-treatment + finish machining + dynamic balancing + coating in one stop
Batch-size flexibility: 1 prototype to 10 000 pcs per release
Drawing formats accepted: STEP, IGES, DXF, PDF, hand sketch with critical dimensions
Forging platform
1 000 t – 30 MN open-die & ring-roll lines, 4 000 t close-die press
Forge ratio ≥ 4 : 1 to eliminate internal voids and align grain flow along the spline teeth for 30 % higher fatigue strength
Ingot capacity 50 kg – 10 000 kg; max. Ø 2 500 mm, length 6 000 mm
Material menu (typical)
Carbon steel: C45, CK45, S355J2G3
Alloy steel: 42CrMo4, 34CrNiMo6, 4340, 4140, 18CrNiMo7-6
Stainless & d…