NSK UCF210 4-Bolt Flange Housing Unit

The NSK UCF210 is a complete 4-bolt square flange housing unit combining an NSK UC210 insert ball bearing with a pressed-steel or cast-iron flange housing, designed for direct shaft mounting applications where the bearing support must be bolted flat to a face surface rather than clamped over a shaft in a pillow block arrangement. The UC210 insert bearing has a 50 mm bore with a self-aligning outer spherical surface that locates within the matching spherical seat in the UCF housing, providing up to 5° self-alignment to accommodate shaft-to-housing angular errors without bearing edge loading. The bearing is secured to the shaft by two set screws or, in the 2000-series variant, by a concentric lock collar, with the factory-packed re-greaseable grease nipple extending through the housing to permit periodic relubrication without dismounting.

NSK UCF210 housed units are ubiquitous in Saudi HVAC equipment, particularly in commercial air handling unit fan shaft bearing supports, cooling tower fan shaft end bearings, and rooftop ventilation unit bearings in the commercial real estate developments across Riyadh and Jeddah. The 4-bolt flange configuration makes the UCF210 the preferred option for face-mounted shaft supports in fan and blower applications where the shaft runs parallel to the mounting surface — a common arrangement in centrifugal fan housings and motor-to-shaft coupling configurations. The self-aligning insert bearing tolerates the modest misalignment that often arises between fan shaft bearing supports bolted to separate sub-frames in large HVAC air handling units.

In Saudi food and beverage manufacturing, NSK UCF210 units are standard on production line conveyor shafts, mixer shafts, and packaging machine rollers, where the quick shaft-mounting and re-greasing features suit the maintenance practices of food factory maintenance teams working under time pressure during production breaks. Saudi cement plant auxiliary equipment — belt conveyors, bucket elevators, and material handling transfer points — uses large quantities of UCF and UC-series flange units across the Kingdom's multiple cement manufacturing facilities, where the re-greaseable design suits the high-contamination environment typical of cement handling areas.

Razz Middle East maintains local stock of NSK UCF210 and other common UC-series housed unit sizes for fast delivery to HVAC contractors, maintenance teams, and plant engineering departments across Saudi Arabia. We supply with NSK original packaging and can provide housing units in pressed-steel or grey cast-iron housing options depending on load and environment requirements.