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S series - Helical-worm gear units

  • Power range: 0.12-45kW
  • Ratio: 23.8-389 (imax: 26688)
  • Torque: 73–10200 N.m


A combination of helical and worm gear units, compact structure, large ratio;
Fluorine rubber oil seal prevent leakage;
Gear with advanced grinding and casting which showed good performance in working;
Good value for money and less maintains.

Part characteristics

Housing materials are high strength grey cast iron and nodular cast iron;
Gears, pinions and bevel gears are made of high grade alloy with carburize-harden technology.
Hardness of teeth surface reaches 58-62 HRC, grinding precision reaching class5-6 and even 3 if required;
Shafts are made of alloy via heat treatment;
Standard accessories such a bearings and oil seals are provided by international a national famous brands;
Good assembly environment, standardized assembly technology, 100% strict quality assurance inspection and regular type test;
The material of worm wheel is tin bronze, the worm rod is alloy steel, which is grinded after carburizing and quenching. The material has good anti-gluing and anti-abrasion performances.
The lifespan is long.

Application industries

Modular, high standardization, components of few specifications and models.
Wide power, torque, speed ratio covering range.
The products are widely applied in electricity, coal, cement, metallurgy, harbor, agriculture, shipping, lifting, environment protection, stage, logistic, weaving, paper making, light industry, plastics and other regions.