Heads up: many models on this page are AI-generated or uploaded untested. They may be misconfigured for the intended application — check the dimensions and tolerances, and verify or edit the model before printing or relying on it.*
5-to-8 mm Set-Screw Shaft Coupler
A 20 mm OD x 34 mm rigid coupler joining a 5 mm NEMA 17 motor shaft (5.2 mm bore) to an 8 mm rod or T8 leadscrew (8.2 mm bore). A 3 mm internal wall stops both shafts, and each end is clamped by an M3 set screw threaded into a captured M3 hex nut.
LM8UU To MGN12H Pattern Carriage
A 34 x 32 x 30 mm carriage block. It press-fits one LM8UU linear bearing (15 mm OD, 15.1 mm bore) on 8 mm smooth rod and has the MGN12H 20 x 20 mm M3 hole pattern on its front face. Anything made for an MGN12H carriage can then ride on a cheap rod instead of a rail. The holes are 3.4 mm clearance holes through the block, counterbored at the back for M3 socket heads.