Bevel gear classification based on intersecting axes and pitch angle Two shafts intersect at an angle greater than 90°, and one bevel gear has a pitch angle of 90°. Identify the correct name for this gear pair. Choose the correct option.

Concept
A bevel gear with a pitch angle of 90° is called a crown gear. When it meshes with another bevel gear and the shaft axes intersect at an angle greater than a right angle, the pair is termed crown bevel gears.

Why the other options are wrong
• Angular bevel gears: general term for non-90° shaft intersections, not specific to a 90° pitch angle on one gear.
• Internal bevel gears: teeth on the inside of a conical surface (different geometry).
• Mitre gears: equal bevel gears with axes at 90° and equal tooth counts.

Final Answer
Crown bevel gears