REV-21-4485 RT25 (1/4 in pitch) timing pulley, 12 teeth, 1/2in belt, 15 tooth spline (NEO Vortex / SPARK Flex) bore

REV Robotics · MPN REV-21-4485 · frc-pulley

Use it

(import "parts/pulley/REV-21-4485.ik" as p)

In a design on ink: ask your agent for it by name, or by what it must be.

Dimensions

teeth	12
pitch	6.35
pitch-diameter	24.2552
tip-radius	11.8203
root-radius	9.4073
groove-depth	2.413

Frame of reference

Axis z; back face z = 0, front face z = width; a tooth land tooth-clock degrees from +x.

Frames

Where it connects: each frame sits on the face it connects by, z out of the part, in the part's own coordinates.

Of	Frame	Origin	x	z
part	back	(0, 0, 0)	(1, 0, 0)	(0, 0, -1)
part	front	(0, 0, 17.1694)	(1, 0, 0)	(0, 0, 1)

All 31 numbers in its record

teeth	12
pitch	6.35
pitch-diameter	24.2552
tip-radius	11.8203
root-radius	9.4073
groove-depth	2.413
tooth-clock	-15
groove-half-profile	0, 2.41303, -0.303718, 1.66549, 1.29855, -0.050393, 1.85101, 0.67831, 0.359615, 2.36816, 0.25111, 0.052863, 2.47858, 0.26282, 0
groove-polygon	-2.47858, 0.26282, 0.052863, -2.36816, 0.25111, 0.359615, -1.85101, 0.67831, -0.050393, -1.66549, 1.29855, -0.303718, 0, 2.41303, -0.303718, 1.66549, 1.29855, -0.050393, 1.85101, 0.67831, 0.359615, 2.36816, 0.25111, 0.052863, 2.47858, 0.26282, 0, 3.55932, 0.26282, 0, 3.55932, -1, 0, -3.55932, -1, 0
teeth-z0	-0.0003
teeth-z1	14.9657
width	17.1694
section	13.0417, 1.835, 13.0417, 0.7938, 11.6295, 1.2035, 8.7748, 1.2035, 8.7748, 2.2035, 11.7717, 2.2035, 7.9375, 17.1694, 8.7748, 16.3321, 8.7748, 14.9659, 9.4073, 14.966, 9.4073, 0, 0, 0, 0, 17.1694, 13.0417, 15.3344, 13.0417, 16.3756, 11.6295, 15.9659, 8.7748, 15.9659, 8.7748, 14.9659, 11.7717, 14.9659
outer-diameter	26.0834
bore-af	0
bore-round	0
bore-clock	18
spline-teeth	15
spline-module	0.5
spline-pa	30
spline-backlash	-0.027
spline-minor	7.0778
spline-major	8.4
key-width	0
key-depth	0
key-angle	0
notch-width	0
notch-depth	0
notch-faces	1
notch-angle	90
hub-diameter	0