Round 11 Inch Cast Iron Thresher Crown Pinion Gear, 25 Teeth, For Industrial

A "11*25 crown pinion" typically refers to a pair of gears used in a differential or other mechanical power transmission system. The "11" likely indicates the number of teeth on the pinion gear, while the "25" indicates the number of teeth on the crown wheel (also known as the ring gear). This specific combination results in a particular gear ratio, which affects the speed and torque transmitted.