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.*
SCARA Upper Arm Beam
The upper arm link of the 'NEMA17 Belt-Drive SCARA Drawing Arm' kit. It is a 177 x 50 x 22 mm ribbed beam with a 140 mm shoulder-to-elbow span. At the shoulder, an OD 44 pad bolts to the 60T hub with four M3 screws on a 34 mm PCD and has a 10 mm hole for the rod end. The elbow NEMA17 sits on a flat pad with 3.4 x 9.4 mm slots (31 mm square pattern) and a 23 x 29 mm pilot obround, so you can slide the motor ±3 mm to tension the GT2 belt. The elbow end has an OD 22 boss with an 8.3 mm bore for the 70 mm 8 mm rod, held by two M3 set screws in captured nuts, and an OD 11 thrust island underneath that bears on the 608 inner race.
608 Joint Robot Arm Link
A 132 mm U-channel arm link with a press-fit 608 bearing pocket (22.05 mm bore, 7.5 mm deep, stepped to a 16 mm clear bore) at each end on 100 mm centres, so two 8 mm shafts or M8 bolts give you a stiff, low-friction structural member for a small robot arm or four-bar linkage. The 4 mm floor carries a 20 × 20 mm M3 clearance pattern (MGN12H carriage or accessory bracket) and both 3 mm webs have 12 × 4 mm zip-tie slots for harness routing; overall 132 × 32 × 15 mm, ~33 cm³.