High-Precision Hardened Gear Shaft | Carburized HRC 58-62 · Double-Center Positioning · DIN Grade 5
Gear shafts are core components of transmission equipment such as reducers, hoists, and crushers, consisting of spline, plain shaft, and gear sections with high transmission capacity, widely used in primary mechanical transmission systems.
Patented Processing Method:
Material preparation: Cut material to size; perform die forging
Center drilling: Clamp outer diameter; machine two center holes (for centers)
Finish turning: Double-center positioning; turn outer diameter
Gear hobbing: Chuck one end; perform gear hobbing
Gear shaving: Chuck one end; perform gear shaving
Heat treatment: Surface carburizing + hardening to HRC 40–60
Grinding: Double-center positioning; rough grind both ends and tooth surfaces
Final inspection and storage
Technical Capabilities:
Gear diameter capacity: Up to several meters (heavy equipment grade)
Machining accuracy: Up to DIN/ISO/GB Grade 5
Tooth types: Spur gears, helical gears, splines (rectangular/involute spline)
Materials: 20CrMnTi, 20CrNi2Mo, 40CrNiMoA, 42CrMo
Surface hardness: Carburized + hardened HRC 58–62, core hardness HRC 30–45
Inspection Methods: CMM, gear inspection center, spectrometer, Rockwell hardness tester, MT/UT inspection.
Typical Applications: Reducer input/output shafts, mine hoist drive shafts, crusher gear shafts, ball mill pinion shafts.
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