Internal Gear

Understanding Internal Gears: Compact Power Transmission

Internal gears, or ring gears, transmit motion between parallel shafts where the pinion (external gear) meshes with the inwardly pointing teeth of the internal gear. Unlike external gear sets where gears rotate in opposite directions, an internal gear and its pinion rotate in the same direction.

Key Characteristics and Advantages:

• Compactness: Offer a very compact drive solution, especially for achieving high gear ratios within a limited space, as seen in planetary gearsets.
• High Contact Ratio: The nature of internal meshing typically results in a higher number of teeth in contact (higher contact ratio) compared to equivalent external gears, leading to smoother, quieter operation and increased load-carrying capacity.
• Planetary Gear Systems: Internal ring gears are the essential outer component in planetary (epicyclic) gear trains, enabling high torque density and versatile speed reduction/increase capabilities.
• Reduced Sliding Velocity: Often exhibit lower relative sliding velocity between teeth compared to external gears, which can improve efficiency and reduce wear.

Considerations:

• Manufacturing Complexity: Cutting internal teeth requires specialized processes, primarily gear shaping, which can be more complex and costly than hobbing external gears.
• Assembly Constraints: The design must allow for the assembly of the pinion within the internal gear. Interference between the pinion and internal gear tips (trochoidal interference) must be avoided, potentially limiting ratio combinations.
• Lubrication: Ensuring adequate lubrication reaches the internal mesh points can sometimes be more challenging than with external gears.

Shreeji Gears: Your Expert Internal Gear Manufacturer in Ahmedabad

As a leading ahmedabad-gear-manufacturer, Shreeji Gears leverages specialized equipment and extensive experience to produce high-accuracy internal gears (ring gears).

Why Choose Shreeji Gears for Internal Gears?

• Material Selection: Utilizing high-strength alloy steels (EN19, EN24, EN353, SAE 8620, etc.) and carbon steels, carefully selected for the required load, fatigue life, and operating environment.
• Precision Shaping: Employing advanced gear shaping machines capable of accurately cutting internal teeth profiles to tight tolerances.
• Heat Treatment Expertise: Applying controlled heat treatment processes such as case carburizing, nitriding, or through hardening to achieve the optimal balance of surface hardness (wear resistance) and core toughness.
• Internal Grinding: Offering precision internal teeth grinding for applications demanding the highest accuracy, smoothest finish, and lowest noise levels.
• Rigorous Quality Control: Comprehensive inspection of tooth geometry (profile, lead, pitch), dimensions, hardness, and material integrity using advanced metrology equipment.
• Diverse Applications: Manufacturing internal gears for planetary gearboxes used in construction equipment, wind turbines, automatic transmissions, industrial machinery, gear pumps, and custom drive solutions.
• Customization: Producing custom internal gears based on specific module/DP, number of teeth, face width, material specifications, heat treatment requirements, and accuracy class (AGMA/DIN/ISO) as per client drawings or design parameters.

General Technical Specifications (Customizable):

• Gear Type: Internal Gear (Ring Gear)
• Mating Gear: External Spur or Helical Pinion
• Material: Alloy Steels (Case Hardening/Through Hardening grades), Carbon Steels
• Module / DP Range: Module 1 to Module 10 (or equivalent DP) - Contact for specific capabilities
• Manufacturing Method: Precision Gear Shaping, Internal Grinding (optional)
• Accuracy Standards: Manufactured to relevant AGMA, DIN, ISO quality levels based on application needs.
• Heat Treatment: Case Carburizing & Hardening, Nitriding, Induction Hardening (if applicable), Through Hardening & Tempering.

Require high-precision internal gears or ring gears for your planetary system or compact drive? Trust Shreeji Gears, your specialist internal gear manufacturer in Ahmedabad. Contact us today to discuss your internal gear specifications and receive a competitive quote!