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Summary of Characteristics, Classification And Applications of Industrial Gearboxes

Views: 0     Author: Site Editor     Publish Time: 2025-07-21      Origin: Site


  • Efficient Transmission

    Industrial gearboxes adopt precision meshing gears, with high transmission efficiency (usually over 95%), which can minimize energy loss and improve the overall efficiency of mechanical equipment.

  • Strong Load-Bearing Capacity

    They are typically made of high-strength alloy steel or hardened gears, enabling them to withstand high torque and heavy loads, suitable for applications with heavy loads and impact loads.

  • Compact Structure and Strong Adaptability

    With flexible design, gearboxes can be constructed in various forms such as parallel shafts, right-angle shafts, and planetary gears according to different transmission requirements, meeting installation conditions with limited space.

  • High Reliability

    Modern gearboxes use advanced lubrication systems (e.g., forced lubrication, splash lubrication) and sealing technologies to reduce wear, extend service life, and ensure long-term stable operation.

  • Wide Speed Regulation Range

    Through multi-stage gear transmission, a wide range of speed ratio adjustments can be achieved, adapting to equipment with different speed requirements, such as high-speed processing equipment or low-speed heavy-duty machinery.


  • Parallel Shaft Gearbox

    Characteristics: Input and output shafts are arranged in parallel, with a compact structure and high transmission efficiency.

    Applications: Motor reducers, conveying equipment, pump machinery, etc.

  • Right-Angle Shaft Gearbox (Bevel Gearbox)

    Characteristics: Input and output shafts are at a 90° angle, usually using spiral bevel gears or straight bevel gears.

    Applications: Construction machinery, mixing equipment, food processing machinery, etc.

  • Planetary Gearbox

    Characteristics: Adopting a planetary gear train (sun gear, planet gears, ring gear), it features high torque density, high precision, and low backlash.

    Applications: Robots, wind power gearboxes, precision machine tools, etc.

  • Worm Gearbox

    Characteristics: Input and output shafts are vertically staggered, with the worm driving the worm gear. It has a self-locking function but relatively low transmission efficiency.

    Applications: Cranes, elevators, packaging machinery, etc.


  • Spur Gearbox

    Characteristics: Gear teeth are parallel to the axis, with a simple structure and low cost, but relatively high noise.

    Applications: General industrial equipment, low-load occasions.

  • Helical Gearbox

    Characteristics: Gear teeth are at a certain angle to the axis, ensuring smooth meshing, low noise, and high load-bearing capacity.

    Applications: High-speed transmission equipment, heavy-duty machinery (e.g., metallurgical machinery).

  • Herringbone Gearbox

    Characteristics: Composed of two symmetric helical gears, axial forces cancel each other out, suitable for high-power transmission.

    Applications: Marine propulsion systems, large rolling mills, etc.

  • Bevel Gearbox

    Characteristics: Used for changing transmission direction (right-angle transmission), including straight bevel gears and spiral bevel gears.

    Applications: Automotive differentials, construction machinery, etc.

  • Planetary Gearbox

    Characteristics: Multiple planet gears rotate around the sun gear, with a compact structure and high load-bearing capacity.

    Applications: Wind power gearboxes, automation equipment, etc.

  • 4. Classified by Lubrication Method

    • 2. Basic Design Process

    • Shaft and Bearing Design

    • Basic Knowledge of Industrial Gearbox Design

      When designing a gearbox, the following factors should be comprehensively considered:





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    • Shaft diameter calculation: Conduct strength analysis based on torque and bending moment.

      1. Module (m): A critical parameter determining gear size, which must meet strength requirements.

      2. Number of teeth (Z): Affecting the transmission ratio, generally an integer to avoid interference.

      3. Pressure angle (α): The standard pressure angle is 20°, while 25° is optional for high loads.

      4. Helix angle (β): An important parameter for helical gears, usually 8°~30°.

      5. Face width coefficient (ψ): Affecting gear strength, generally 0.3~0.6.


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