SKF NKI40/20 Needle Roller Bearing with Inner Ring

The SKF NKI40/20 Needle Roller Bearing with Inner Ring is a precision needle roller bearing with inner ring manufactured by SKF, the world's leading rolling bearing producer founded in Gothenburg, Sweden in 1907. Designated NKI40/20, this bearing features 40 mm bore (d), 55 mm outer diameter (D), and 20 mm width (B), giving it a compact yet robust geometry suited to heavy-duty industrial rotating equipment. This needle roller bearing with inner ring provides very high radial load capacity in a minimal cross-section, ideal where radial space is restricted. It carries a basic dynamic load rating (C) of approximately 29 kN and a basic static load rating (C0) of approximately 57 kN, with a reference rotational speed of around 10000 r/min depending on lubrication and mounting conditions.

The NKI40/20 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 NKI40/20 is widely specified for rotating equipment at facilities such as SABIC (Yanbu ethylene cracker pumps) 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 NKI40/20 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 NKI40/20, or arrange scheduled deliveries supporting your plant maintenance and turnaround programmes in Riyadh and across the Kingdom of Saudi Arabia.