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48 DP spur gear, 24 teeth, 20° pressure angle

48 DP spur gear, 24 teeth, 20° pressure angle: pitch Ø12.700 mm (0.5 in), outside Ø13.758 mm (0.5417 in), root Ø11.328 mm; face 4.76 mm (3/16 in) and bore Ø3.175 mm (1/8 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 N20
pitch Ø = N / DP, in (mm)0.4167 (10.58)
outside Ø = (N + 2) / DP, in (mm)0.4583 (11.64)
root Ø 14.5°, in (mm)0.3627 (9.21)
root Ø 20°, in (mm)0.3627 (9.21)
base Ø 14.5°, in (mm)0.4034 (10.25)
base Ø 20°, in (mm)0.3915 (9.95)
example face, in3/16
example bore, in1/8
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From the full sheet

Spur gears, 48 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 48 DP spur gear, and how many teeth does it have?

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