{"schemaVersion":1,"slug":"ansi-mechanical-gear-connection","name":"ANSI/IEEE Mechanical gear connection form","kind":"symbol","abbreviation":"Q021223","aliases":["Q021223","IEEE Gear Joint","ANSI Mechanical gear connection"],"category":"control-circuits","drawingTypes":["Schematic"],"referenceFamilies":["IEEE / ANSI","Manufacturer"],"summary":"IEEE-library form of mechanical gear connection: a gear-connection indication identifies transmission through a gearing relationship.","description":["This reference locates mechanical gear connection in Autodesk's IEEE-oriented mechanical controls, coupling family. A gear-connection indication identifies transmission through a gearing relationship. A gear relationship transfers motion through the documented gearing arrangement. It can relate an operating member to a switch, position device or driven mechanism. The public library uses Q021223 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.","Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence.","The schematic identifies the relationship while a mechanical drawing supplies ratio and geometry. Avoid treating the gear connection mark as a numerical reduction ratio. State the driving/driven mechanism and any required ratio in the schedule. The symbol does not give a gear ratio, tooth geometry or mechanical rating. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted."],"readingNotes":["State the driving/driven mechanism and any required ratio in the schedule.","The symbol does not give a gear ratio, tooth geometry or mechanical rating."],"drawingChecklist":["Identify the associated device, circuit or diagram boundary.","State the driving/driven mechanism and any required ratio in the schedule.","Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form."],"distinction":"The symbol does not give a gear ratio, tooth geometry or mechanical rating.","facts":[{"label":"Convention evidence","value":"Autodesk IEEE Symbol Preview: Mechanical Controls, Coupling; published form: Gear Joint."},{"label":"Public vendor block","value":"Q021223. Vendor library token, not an IEEE symbol number."},{"label":"Information added","value":"State the driving/driven mechanism and any required ratio in the schedule."},{"label":"Preview","value":"Independent educational concept; consult the publisher and applicable standard for the exact graphic"},{"label":"Artwork scope","value":"Original educational geometry. Exact standard graphics, product ratings and terminal pinouts are not certified."}],"references":[{"sourceId":"s28-ieee-mechanical-controls-coupling","relevance":"Public IEEE-oriented Mechanical Controls, Coupling table explicitly lists Q021223 as Gear Joint. This supports the vendor convention context, not reproduction of the publisher graphic."}],"related":["iec-mechanical-gear-connection","relay-coil","normally-open-contact"],"artwork":"s28-ansi-mechanical-gear-connection","publishedOn":"2026-10-28","updatedOn":"2026-10-28","provenance":"independent-public-research","symbolVariant":{"convention":"IEEE / ANSI","form":"Gear Joint","reference":"Autodesk IEEE Symbol Preview: Mechanical Controls, Coupling, block Q021223. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.","counterpart":"iec-mechanical-gear-connection"},"plainEnglish":{"title":"What does ANSI/IEEE Mechanical gear connection form mean?","introduction":"This reference locates mechanical gear connection in Autodesk's IEEE-oriented mechanical controls, coupling family. A gear-connection indication identifies transmission through a gearing relationship. A gear relationship transfers motion through the documented gearing arrangement. It can relate an operating member to a switch, position device or driven mechanism. The public library uses Q021223 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.","example":"Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence.","drawings":"The schematic identifies the relationship while a mechanical drawing supplies ratio and geometry. Avoid treating the gear connection mark as a numerical reduction ratio. State the driving/driven mechanism and any required ratio in the schedule. The symbol does not give a gear ratio, tooth geometry or mechanical rating. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.","terms":[{"name":"Normally open / normally closed","meaning":"The contact state in the normal condition defined for the drawing."},{"name":"Terminal","meaning":"An identified point where a conductor connects."},{"name":"Signal","meaning":"Electrical information passed between devices, rather than necessarily the main power supply."}],"diagram":"flow","steps":["Identify the device and form","Read the connections and state","Check the equipment reference"],"caption":"A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.","sources":[{"label":"Autodesk IEEE Symbol Preview: Mechanical Controls, Coupling","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-3B784797-C632-4E0A-BCDC-D7E4D982FE34.htm"}],"detail":"IEEE-library form of mechanical gear connection: a gear-connection indication identifies transmission through a gearing relationship. The symbol does not give a gear ratio, tooth geometry or mechanical rating.","profileId":"reviewed-symbol-20261028"},"url":"https://eloragrid.ai/symbols/ansi-mechanical-gear-connection","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/ansi-mechanical-gear-connection.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"s28-ieee-mechanical-controls-coupling","title":"Autodesk IEEE Symbol Preview: Mechanical Controls, Coupling","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-3B784797-C632-4E0A-BCDC-D7E4D982FE34.htm","type":"cad-reference","scope":"Public mechanical controls, coupling family names and vendor block tokens. Horizontal, vertical and rotated placements are not separate engineering functions. Exact standard geometry is not reproduced.","checkedOn":"2026-10-28","reuse":"link-only","relevance":"Public IEEE-oriented Mechanical Controls, Coupling table explicitly lists Q021223 as Gear Joint. This supports the vendor convention context, not reproduction of the publisher graphic."}]}