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24 DP spur gear, 40 teeth, 14.5° pressure angle

24 DP spur gear, 40 teeth, 14.5° pressure angle: pitch Ø42.333 mm (1.6667 in), outside Ø44.450 mm (1.75 in), root Ø39.692 mm; face 7.94 mm (5/16 in) and bore Ø12.700 mm (1/2 in) are examples, the tooth form is the standard's; true involute flanks, no hub, keyway, chamfer or root fillet

Exact dimensions. True size, no tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, CC BY 4.0 (credit "Xem Studio")

Dimensions

teeth N24
pitch Ø = N / DP, in (mm)1 (25.40)
outside Ø = (N + 2) / DP, in (mm)1.0833 (27.52)
root Ø 14.5°, in (mm)0.896 (22.76)
root Ø 20°, in (mm)0.896 (22.76)
base Ø 14.5°, in (mm)0.9681 (24.59)
base Ø 20°, in (mm)0.9397 (23.87)
example face, in5/16
example bore, in5/16
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From the full sheet

Spur gears, 24 diametral pitch (DP): 12 to 60 teeth, 14.5° and 20° involute, pitch / outside / root diameter and STEP/STL: every size, notes, mating features and sources. What is the pitch diameter, outside diameter and root diameter of a 24 DP spur gear, and how many teeth does it have?

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