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  • November 08, 2026

ZSY Three-Stage Hard Tooth Surface Cylindrical Gear Reducer: Models & Specifications


H1: ZSY series three-stage gear reducer - complete model specification guide

ZSY series three-stage cylindrical gear reducer model and specification details.

H2:Overview of ZSY Three speed Transmission Series

The ZSY series is engineered for the most demanding, low-speed, high-torque applications. It covers nominal ratios from 22.4 to 100, making it ideal for driving large rotary equipment where speed reduction is the primary goal.

H2: ZSY cylindrical gear reducer specification table

The ZSY series covers nominal center distances from 160 mm to 710 mm. Below is the model and specification table:

Model / Frame SizeNominal Center Distance (mm)Nominal Ratio Range (i)Approximate Input Power Range (kW)*
ZSY 160 – 280160, 180, 200, 224, 250, 28022.4 – 10010 – 300
ZSY 315 – 450315, 355, 400, 45022.4 – 100250 – 1500
ZSY 500 – 710500, 560, 630, 71022.4 – 1001200 – 4000+
H2: Key Performance Features
  • Extreme Torque Multiplication: The three-stage design allows for massive output torque within a compact axial length.

  • Robust Construction: The gearbox housing and internal shafts are designed to withstand high radial loads from large driven components.

  • Hardened and Ground Gears: Ensures quiet operation and long life even at low speeds.

  • Versatile Lubrication: Equipped with oil bath lubrication as standard, with options for external cooling systems for continuous heavy duty.

H2: Typical Applications for ZSY

The ZSY is the powerhouse behind heavy industries, commonly found in:

  • Heavy-duty mining and bulk material conveyors.

  • Rotary kilns and ball mills in cement plants.

  • Large bucket elevators.

  • Metallurgical equipment (e.g., rolling mills, cranes).

 ZSY gearbox for agitator

H2: Secure a High-Torque ZSY three-stage hard tooth surface reducer. Solution

Selecting a ZSY requires careful consideration of radial loads and thermal limits to prevent premature gear failure.

Provide us with your motor power, required output speed, and load characteristics. Our engineering team will return a verified ZSY selection with appropriate service factors.


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