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8 mm Shaft Cycloidal-Rise Plate Cam
This is a plate cam (rise-and-fall disc) for an 8 mm shaft or rod. Over each turn it lifts a 624 roller follower (13 mm OD) by 20 mm and lowers it again, using a cycloidal motion profile so the follower starts and stops without jerk. The profile is offset for the roller's 6.5 mm radius, so the follower moves exactly 26 to 46 mm from the shaft axis. The disc is 8 mm thick and the hub is 22 mm in diameter. An 8.3 mm slip-fit bore and a radial M3 heat-set insert pocket (4.0 mm) for a set screw lock it to the shaft, which suits automata, pumps, stamping rigs and indexing demos.
5 mm Shaft Groove Cam For 624 Roller
A positive-drive face cam for a 5 mm motor shaft such as a NEMA 17. Its closed 13.6 mm groove holds a 624 bearing (13 mm OD) as the roller and drives it both ways, so the follower needs no return spring. Each turn gives a 15 mm cycloidal rise over 120°, a 60° dwell, a 120° return and a 60° dwell. The cam is about 92 × 107 mm, and an M3 set screw with a captured nut locks the hub to the shaft.