The L105Y-A is a 24‑tooth steel miter gear from Boston Gear, an Altra Industrial Motion brand, designed to transmit motion between intersecting shafts at a 90‑degree angle with a 1:1 ratio. This 8 DP gear features a 20° pressure angle and straight teeth, with a 3.0 in pitch diameter and a 1.0 in bore on a plain bore shaft. Hub details include a 2.5 in hub diameter and 1.0 in hub projection, while the gear’s overall width is 1.786 in and the face width is 0.68 in; mounting distance is 2.75 in. The part is made from steel and is unhardened, weighing about 1.50 lb, with the manufacturer part number L105Y-A and UPC 781711121641.
