SKF 6318-Z Deep Groove Ball Bearing

The SKF 6318-Z 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 6318-Z, this bearing features 90 mm bore (d), 190 mm outer diameter (D), and 43 mm width (B), giving it a compact yet robust geometry suited to heavy-duty industrial rotating equipment. It is fitted with a single seal/shield (Single metal shield (Z)) on one side, suited to arrangements with an opposing shoulder or external seal. It carries a basic dynamic load rating (C) of approximately 143 kN and a basic static load rating (C0) of approximately 108 kN, with a reference rotational speed of around 4300 r/min depending on lubrication and mounting conditions.

The 6318-Z 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 6318-Z is widely specified for rotating equipment at facilities such as SABIC (Jubail petrochemical compressor trains) and NWC (Riyadh water transmission pumping stations). 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 6318-Z 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 6318-Z, or arrange scheduled deliveries supporting your plant maintenance and turnaround programmes in Dammam and across the Kingdom of Saudi Arabia.