Introducing the Fafnir MM311K Ball Bearing, a premium-quality bearing meticulously designed to deliver optimal performance and outstanding durability. With precise measurements of 55 mm bore diameter, 120 mm outside diameter, and 29 mm width, this bearing is engineered to meet the highest standards in mechanical applications. Key Features: Brand: FAFNIR Model: MM 311 K / 6311P4 Condition: New Manufactured in: United States This MM311K bearing guarantees smooth operation and enhanced reliability across varying loads, making it ideal for a diverse array of applications, ranging from industrial machinery to automotive uses. We pride ourselves on our competitive pricing, ensuring that obtaining the right part is both affordable and straightforward. If you cannot find your desired part, we offer quick sourcing options–simply reach out to us for assistance! We cater to your shipping needs with flexible options, including next-day and expedited services available at checkout. International shipping is also supported, utilizing reputable carriers such as UPS, FedEx, DHL, and Freight. Do not compromise on quality. Experience the ease and excellence of purchasing your Fafnir MM311K Bearing today and ensure your machinery operates at peak performance!