{
  "schema_version": "1.0",
  "id": "component.gear.cylindrical.internal",
  "version": "1.0.0",
  "kind": "gear",
  "virtual": false,
  "roles": ["ring", "internal_gear"],
  "parameters": {
    "teeth": {"type": "integer", "minimum_exclusive": 17},
    "module_mm": {"type": "number", "exclusive_minimum": 0},
    "pressure_angle_deg": {"type": "number", "exclusive_minimum": 0, "maximum": 45},
    "face_width_mm": {"type": "number", "exclusive_minimum": 0},
    "rim_thickness_mm": {"type": "number", "exclusive_minimum": 0},
    "tooth_form": {"enum": ["spur", "helical"]},
    "helix_angle_deg": {"type": "number", "minimum": 0, "maximum": 35},
    "helix_hand": {"enum": ["left", "right"]}
  },
  "ports": [
    {"id": "rotation_axis", "type": "port.rotation.coaxial", "multiplicity": "one"},
    {"id": "internal_teeth", "type": "port.mesh.internal_cylindrical", "multiplicity": "many"},
    {"id": "housing_mount", "type": "port.mount.stationary", "multiplicity": "one"}
  ],
  "capability_refs": [
    "capability.cad.simplecad_parts",
    "capability.validation.internal_mesh"
  ],
  "applicability": {
    "current_project_tooth_forms": ["spur", "helical"]
  },
  "maturity": "production"
}