Our precision ring gears are engineered for applications demanding high rotational accuracy, compact power transmission, and long-term operational reliability. This particular model of ring gears for planetary gearbox features a module of 0.8 and 140 teeth, striking an optimal balance between fine tooth resolution and sufficient load-carrying capacity for light-to-medium duty drivetrains. Manufactured from high-quality alloy steel, each ring gear undergoes strict quality control from blank forging to final inspection, ensuring dimensional stability and consistent tooth flank geometry. Whether used as the stationary internal gear in a planetary gearbox or as a rotating component in a slewing drive, our ring gears deliver smooth meshing, low backlash, and extended service life even under continuous or intermittent operating conditions. Every gear by Belon is inspected on a CNC gear measuring center to verify that tooth profiles, pitch accuracy, and runout meet or exceed international standards, providing our customers with drop-in replacement confidence and OEM-level performance.
Ring Gears For Planetary Gearbox
Typical Applications of Internal Gears
This 0.8-module, 140-tooth ring gear is ideally suited for precision motion control systems where space is constrained but positioning accuracy cannot be compromised. Primary applications include robotic joint actuators, where the ring gear serves as the fixed internal gear in compact planetary reducers, enabling smooth, zero-backlash motion for articulated arms and collaborative robots. In the automation and factory equipment sector, this gear size is widely used in indexing tables, rotary turntables, and servo-driven positioning stages, where its fine pitch ensures high resolution and repeatability. The medical device industry also benefits from this geometry—particularly in CT scanner gantries, surgical robotic arms, and patient positioning systems—where quiet operation, low vibration, and hygienic, maintenance-free performance are essential. Additionally, we supply this ring gear configuration to electric vehicle (EV) window regulator and seat adjustment mechanisms, where compactness and noise reduction are prioritized. For high-duty-cycle applications, we recommend the case-carburized and ground version, which offers superior wear resistance and fatigue strength. Our engineering team can assist with gear pair matching, contact pattern analysis, and installation clearance calculations to ensure seamless integration into your existing system.
5-Step Production Process
Tube Forging
Turning
Internal Gear Shapping
Heat Treatment
Ring Gear Grinding
Strict Quality Inspection
Dimension Inspection
Material Testing
Heat Treatment Testing
Accuracy Inspection
Dimension Inspection
Material Testing
Heat Treatment Testing
Accuracy Inspection
Professional Packaging Safe Arrival
Inner Package
Out Package
Carton
Wooden Package
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