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Steel Internal Gears -ring Gear

Steel Internal Gears -ring Gear

Steel Internal Gears -ring gear

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Steel Internal Gears -ring gear


Internal spur gears, also know as ring gears, have the same standards as an external spur gear except that the teeth are cut into the inside diameter while the outside is kept smooth. Internal gears can provide a compact solution that delivers large speed reductions and reduced sliding wear action and can be applied in a wide range of equipments & applications. Internal gears are widely used in light duty applications. When it's necessary to have two parallel shafts rotate in the same direction, internal gears eliminate the need for an idler gear.


We have famous customer all over world for ring gear like: Fairfield in USA, Carraro in Italy, Itafran in Fracne etc.....From size 0.5 to 10 M. dia. from 50mm till 2000mm.


When mating pinions are too close in size to the gear, interference may result. Therefore, the difference in teeth of the pinion to the gear should not be less than 15.

① The backlash values shown in the table are the theoretical values for the normal direction for the internal ring in mesh with a 30 tooth SS spur gear.

② The allowable torque shown in the table are the calculated values according to the assumed usage conditions.

③ Please check for the involute interference, trochoid interference and trimming interference prior to internal gears.


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