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8 mm Shaft Eccentric Sheave And Strap
A print-in-place eccentric sheave and strap that turns 8 mm shaft rotation into a 12 mm push-pull stroke. Use it to drive pumps, shaker tables, sieves or agitators. The 44 mm disc has an 8.3 mm bore set 6 mm off-centre, locked by an M3 heat-set set screw. It turns inside a captive 56 mm strap ring held by a 45° V-groove and bead. The strap's arm ends in an M4 clearance eye at 80 mm centres.
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.