The Lovejoy 1EA0030KA2 is a genuine L090 series jaw coupling hub, meticulously engineered from durable cast iron for robust power transmission. This coupling hub features a precise 38.1 mm (1.5 inch) bore diameter and an 88.9 mm (3.5 inch) outside diameter, with an overall length of 44.45 mm (1.75 inches). It includes a keyway measuring 9.525 mm (3/8 inch) wide by 4.7625 mm (3/16 inch) deep, ensuring a secure and reliable shaft connection. Designed for use in various industrial machinery, this Lovejoy hub provides efficient torque transfer and effective vibration dampening when paired with a compatible jaw coupling spider and another hub.