NTN UCP309D1

NTN UCP309D1 Pillow Block Bearing Unit Description The NTN UCP309D1 is a reliable and durable pillow block bearing unit designed for a wide range of industrial machinery. It consists of a P309 cast iron housing and a UC309D1 insert bearing, providing a complete, ready-to-mount solution. The unit is designed for easy installation and maintenance, with a grease nipple for re-lubrication to ensure a long service life. Specifications Manufacturer: NTN Type: UCP309D1 Bore Diameter: 45 mm Housing Material: Cast Iron Bearing Insert: UC309D1 Shaft Locking: Set Screw Sealing: L3 Triple Lip Seal Label Info Housing Marking: P309 Bearing Marking: UC309 Brand: NTN Application This pillow block bearing is ideal for use in conveyor systems, agricultural machinery, construction equipment, and general industrial applications where a reliable rotating shaft support is required. Country of Origin Made in Japan. CO2 Impact By purchasing this pre-owned item, you are helping to avoid the emission of approximately 8.4 kg of CO2, which is the estimated amount produced during the manufacturing of a new unit. This saving is comparable to driving a car for 42 kilometers. Availability This item is in stock and ready for immediate dispatch. Order now from profideals for expert support and fast delivery. FAQ What is the significance of the ‘D1’ suffix in the UCP309D1 part number?The ‘D1′ suffix in NTN’s nomenclature typically specifies the type of seal used. In this case, it often refers to NTN’s effective L3 triple-lip seal, which provides superior protection against contamination and moisture, extending the bearing’s life in harsh environments. What is the recommended shaft tolerance for a 45mm bore bearing like this?For general-purpose industrial applications using a set-screw locking mechanism, a shaft tolerance of h6 or h7 is typically recommended. This ensures a proper fit that is secure but allows for easier installation and removal compared to tighter interference fits. How often should the UCP309D1 be re-lubricated?Re-lubrication intervals are highly dependent on operating conditions such as speed, load, temperature, and environmental contamination. For moderate conditions, re-greasing every 500 to 1000 operating hours is a common starting point. However, it is crucial to consult the machine’s maintenance manual or NTN’s guidelines for your specific application. profideals is not an authorized distributor, reseller, or representative of the products featured on this website. All product names, trademarks, brands, and logos used on this site are the property of their respective owners. Last Update: Friday, March 13, 2026