Spur gear — Free Mechanical Engineering Illustration

Mechanical Engineering

Spur gear

Metallic gray steel external spur gear shown in a flat engineering-style view, typically face-on or simple side/profile. The gear is a circular disk-like or flat cylindrical wheel with clean machined faces, a centered round bore, and optionally a slightly raised hub or solid web around the bore. Evenly spaced straight external teeth project radially around the full circumference, with tooth flanks parallel to the gear axis and no helix angle. The teeth have crisp involute-style geometry, sharp machined edges, and a symmetrical industrial appearance suitable for a technical diagram or component icon.

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