This is the smooth idler wheel designed by Bart Dring for the Makerslide system. It can be used with a belt up to 6.35 mm (1/4") wide. Several machines, including the Shapeoko, use pairs of them to guide belts around toothed pulleys. If you have a Shapeoko 1, you need two of these for the dual Y drive upgrade in all but one belt configuration.
The kit includes:
- One idler wheel sleeve;
- Two bearings;
- One precision washer;
- One 6.35 mm (1/4") nylon spacer;
- One M5 × 30 mm hex socket cap screw;
- Four M5 washers;
- One M5 nut.
The sleeve is black acetal, also known as Delrin®. The screw, nut and washers are stainless steel.
Shapeoko part numbers: MSK01-06, MSK01-07, MSK01-08, SM-H01, SM-H08, SM-H03, SM-H04.