If you're running a Bridgeport milling machine with Servo power feed models 140 or 150 and need to replace that worn-out gear, this is the genuine OEM gear and hub assembly you're looking for. The part number is 4737, and it's the gear that sits on the bottom of the unit—crucial for smooth power feed operation. It's a straightforward replacement part that'll get your machine back to precise, reliable feeding. Shipping weight is just about 1 pound, so it won't break the bank to get it to your shop. Keep your Bridgeport in top shape and avoid downtime with this exact-fit gear. Perfect for machinists, maintenance techs, or anyone who keeps their equipment running right. Just swap it out and get back to making chips!