60T Bore 5 Width 6 Pulley
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60-tooth GT2 timing pulley — 2 mm tooth pitch, 5 mm bore, for 6 mm-wide GT2 belt.
GT2 is the motion standard for CNC and 3D-printer drives: precise tooth engagement, no ratcheting under load. A 60T pulley is the large end of a belt reduction — running it against a smaller 16T or 20T gives a 3:1 or 4:1 speed reduction with a corresponding torque increase, which is exactly how the Micron Motion Kit uses it: four of these 60T pulleys driven by 16T motor pulleys through Gates 2GT belts, to give the Micron its compact, high-torque X/Y drive.
Why this over the alternatives
- Two Trees 60T vs. generic 60T — Two Trees spec is what the Micron motion system was designed around; the bore tolerance and grub-screw depth are clean. Aftermarket 60T pulleys in this size tend to have shallow grub screws or wobble on a 5 mm shaft.
- 60T vs. 40T for the same role — 60T gives finer microstep resolution per mm of belt travel (60 teeth = 120 mm of belt per revolution vs. 80 mm on 40T), which is useful for high-precision X/Y on a small printer like the Micron.
- 5 mm bore vs. 8 mm bore — 5 mm fits standard NEMA 14 / short-shaft BLDC shafts and most 3D-printer kinematics; 8 mm is NEMA 23 territory. Use 5 mm for the Micron and most direct-drive extruder inputs.
Specifications
- 60 teeth · GT2 (2 mm) pitch
- 5 mm bore · 6 mm belt width
- Silver aluminum, single grub-screw clamping
- Outside diameter: ~38.2 mm (60 × 2 mm pitch / π)
Intended use
Designed as a spare / replacement for the dfh Micron Motion Kit (where it ships as 4× per kit, silver only). Also used directly on any short-shaft GT2 drive: Voron builds, Sherpa Mini / Orbiter v1.5 inputs, Eryone Thinker, and other compact CoreXY / belt-driven printers that use a 5 mm shaft with a 6 mm belt. Pairs with our GT2 40T or GT2 20T for a 1.5:1 or 3:1 reduction, and with Gates 2GT 6 mm belt for the actual drive loop.
What this is NOT
This is a toothed GT2 pulley — not a smooth idler. If you want a non-driven tensioner wheel, use an idler pulley (the teeth aren't load-bearing on an idler, but the toothed profile keeps the belt path consistent). Also not a T5 / HTD / MXL pulley — the tooth profile doesn't interchange, and the Micron motion system is GT2 throughout.
