V groove bearing pully

thingiverse

Parts: Pully support x1 (printed part) V groove wheel x1 (printed part) 623Z bearing x1 (OD 10mm, ID 3 mm) M3x15 bolt x1 M3 nut x2 M3 washer x2 Assembly: The inner diameter of V groove wheel is set 4.8 mm to press fit the bearing. I used press fit technique. To press fit the bearing into the wheel, heat up the bearing for three to four seconds using a portable gas torch or lighter. Then push the bearing into the hole, press it by C clamp or bench vise. To use M3 set screw, change the diameter of bearing_623Z() to 5.0. module bearing_623Z() { cylinder(r=4.8, h=4+2); // 4 } Put two M3 washers in left and right side of the V groove bearing. Fasten the V groove bearing on the support using M3x15 bolt and one M3 nut. The V groove wheel should turn without rubbing the inner wall of the support. Print Settings Printer: Bulbul Junior Rafts: No Supports: No Resolution: 0.2 mm Infill: 30% Notes: Print the support and V groove wheel at the same time. My counter weight of flying extruder uses two pulleys. How I Designed This Pulley of the counter weight system Previous pulley that uses 623Z bearing made the string digging into the gap between the bearing and support while in printing. So I went out to buy V groove bearings in local suppliers. I went home with great frustration. 'Why should I buy this kind of simple part from other country?' I decided to build a V groove bearing and searched models on thingiverse, and found one but it was overly complicated. After studying the SCAD design, I borrowed core design, merging two identical cones at the center. Press fitting 623Z bearing into the V groove wheel makes V groove bearing!