Internal gear also calls ring gear, and its gear teeth are cut on the inside of the ring, precisely matched to mate with the planet gears in planetary gearbox drive system. The common crafts we used for manufacturing internal gear is by dedicated gear shaping or broaching processes. Both crafts ensure uniform tooth spacing and concentricity which are critical for smooth load sharing in a planetary setup.
Internal Gear Used In Planetary Gearbox
Specification
Module
3
Application
Planetary gearbox
Material
42CrMo4
Heat Treatment
Quenching and Tempering
Accuracy
DIN 8
Typical Applications of Internal Gears
Internal gears are widely used in planetary gearboxes, where they serve as the fixed ring gear that meshes with the planet gears to achieve high torque density in a compact design. They are also found in gear couplings, torque converters, slewing drives for cranes and excavators, and industrial machinery such as presses and winches. Other common applications include automatic transmissions, steering systems, and medical devices where space is limited but reliable power transmission is required.
Production process
5-Step Production Process
Tube Forging
Turning
Internal Gear Shapping
Heat Treatment
Ring Gear Grinding
Tube Forging
When gears need high performance that needs to withstand high loads, high stress, impact loads or fatigue loads, forgings are suggested to use. Forging allows metal fibers to be continuously distributed along the gear profile, significantly improving root strength and fatigue life.
Turning
This is the process of cutting and shaping solid materials into precise parts. It uses tools like lathes, mills, and drills to remove excess material. Machining transforms a simple block of metal into a finished, functional component.
Internal Gear Shapping
Gear shaping is a gear cutting process that used cutting tool that is essentially a “master gear” reciprocates while meshing in a synchronized rolling motion with the gear blank.The cutter is usually moving up and down.
Heat Treatment
Gears need to be running with two gears or above two gears, that makes them easy to be worn-out. That’s why most types of gears need to be harden through heat treatment.
Ring Gear Grinding
Gear Grinding is the the most common high-precision method for finishing hardened gears under gleason profile. There are two methods to use an abrasive grinding wheel removes material from the tooth flanks.
Inspection
Strict Quality Inspection
Dimension Inspection
Material Testing
Heat Treatment Testing
Accuracy Inspection
Dimension Inspection
Material Testing
Heat Treatment Testing
Accuracy Inspection
Packages
Professional Packaging Safe Arrival
Customized cost-effective packages for products protection. We select multi-model solutions, combining air, sea, or land freight for the optimal balance of cost, speed, and reliability.
Inner Package
Out Package
Carton
Wooden Package
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