High-precision blackened straight-tooth gears

Productfeatures:

Straight-tooth gear drives transmit motion and power through the meshing of the driving gear and the driven gear. This type of gear is used to drive between two parallel shafts.

Straight cylindrical gears are easy to manufacture, allow for the production of high-precision gears, and do not generate thrust (axial force) during operation, making them one of the most common types of gears in practical production and application.

Gear drives offer the advantages of reliable operation, a constant transmission ratio, high efficiency, the ability to transmit motion between any two axes in space, and broad adaptability.

Precision grades are typically classified according to GB/T 10095 (or ISO 1328) into grades 0–12, with grades 6–8 being commonly used. Application areas include machine tools, automobiles, robotics, and instrumentation—where high transmission precision and synchronization are required.

Manufacturing processes generally include gear hobbing, gear shaping, gear shaving, or gear grinding, with gear grinding capable of achieving higher precision (e.g., grades 3–4). When selecting a gear, factors such as module, number of teeth, pressure angle (typically 20°), tooth width, material (e.g., 40Cr, 20CrMnTi), and heat treatment (carburizing and quenching, nitriding) must be considered.