SKF 6311 Deep Groove Ball Bearing

The SKF 6311 Deep Groove Ball Bearing is a precision deep groove ball bearing manufactured by SKF, the world's leading rolling bearing producer founded in Gothenburg, Sweden in 1907. Designated 6311, this bearing features 55 mm bore (d), 120 mm outer diameter (D), and 29 mm width (B), giving it a compact yet robust geometry suited to heavy-duty industrial rotating equipment. It carries a basic dynamic load rating (C) of approximately 74.1 kN and a basic static load rating (C0) of approximately 45 kN, with a reference rotational speed of around 7000 r/min depending on lubrication and mounting conditions.

The 6311 is engineered with SKF's high-grade chrome steel raceways, precision-ground rolling elements and optimised internal geometry to reduce friction, running temperature and noise. This makes it particularly well suited to the demanding thermal conditions of the Saudi Arabian climate, where ambient temperatures regularly exceed 50 degrees Celsius and airborne dust and sand place severe demands on sealing and lubrication. SKF's seal and clearance options help maintain a clean lubricant film, extending grease life and reducing unplanned downtime in desert and coastal Eastern Province environments where humidity and salt-laden air accelerate corrosion.

In Saudi industry the 6311 is widely specified for rotating equipment at facilities such as Saudi Aramco (Khurais water injection facility) and SEC (Ghazlan power plant cooling water pumps). Typical duties include electric motors, pumps, fans, gearboxes, compressors and conveyor systems across the oil and gas, petrochemical, desalination, power generation and mining sectors. SKF bearings are accepted on major Saudi approved vendor lists including the Saudi Aramco AVL, and are SASO compliant for use throughout the Kingdom.

Razz Middle East stocks the 6311 and a full range of associated SKF bearings, seals, lubricants and mounting tools for fast supply across Saudi Arabia. From our distribution network we provide rapid delivery to the Eastern Province industrial corridor including Jubail and Dammam, as well as Riyadh, Jeddah and Yanbu, typically within 24 to 48 hours for stocked sizes. Our technical team can assist with bearing selection, interchange cross-referencing to NSK, FAG/Schaeffler and Timken equivalents, failure analysis and condition-monitoring recommendations. Contact Razz Middle East at sales@razz.sa to request a quotation, confirm current stock of the 6311, or arrange scheduled deliveries supporting your plant maintenance and turnaround programmes in Yanbu and across the Kingdom of Saudi Arabia.