The Yanmar 172B1768130 Pin Wheel, also commonly referred to as a sprocket, is an original equipment manufacturer (OEM) part specifically designed for Yanmar mini-excavators. This genuine component is crucial for the track system, providing reliable engagement with the track chain. It is compatible with various Yanmar models, including the VIO10 and SV100 series. Key technical specifications include an outer diameter of 190 mm, an inner diameter of 150 mm, a width of 40 mm, and a pitch circle diameter of 170 mm, featuring 6 bolt holes. Weighing 3.5 kg, this robust pin wheel ensures durability and precise fitment for maintaining machine operational efficiency.