Mining Machinery Shaft Parts—core components for torque/power transmission under extreme loads, abrasion, and impact in mining operations, with clear classifications, materials, processes, applications, and key design features.
Common Types & Applications
Gear Shaft
Function: Integrate gear and shaft into one piece, used for meshing transmission and torque delivery in reducers, crushers, and ball mills.
Material: 42CrMo, 20CrMnTi; heat treatment: quenching & tempering, carburizing & quenching for high surface hardness and core toughness.
Transmission Shaft/Spindle Shaft
Function: Transfer power between distant components (e.g., conveyor drives, hoist systems); splined/keyed connections prevent slippage.
Features: Often long, with stepped diameters, splines, keyways, and tapered ends for assembly/disassembly.
Hollow Shaft/Trunnion Shaft
Function: Used in large rotating equipment like ball mill, rotary kiln; lighter weight than solid shafts, can pass through other components (e.g., lubrication pipes).
Material: Cast steel (ZG230-450, ZG270-500) or forged alloy steel for heavy load-bearing.
Axle Shaft
Function: Bear the weight of mining vehicles/equipment (loaders, trucks) while driving wheels; withstand bending and torsion.
Intermediate Shaft/Idler Shaft
Function: Transfer motion between drive and driven shafts in multi-stage reducers; stabilize the transmission system and adjust center distance.
