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Category
UCP306-17
The UC series bearings refer to standardized, widely-used pillow block ball bearing units with adapter sleeves. At their core is a deep groove ball bearing featuring a spherical outer diameter (SPB) designed to fit into the matching spherical bore of a cast iron housing. Adhering to metric dimensions, this series is specifically engineered for industrial applications demanding high load capacity, straightforward installation, and dependable performance.
UC Series Bearings
| ISO | UCP306-17 | |
| Bearing No. | UCP306-17 | |
| Housing | P306 | |
| Bore diameter | d | 1-1/16 in |
| Distance mounting base to centerline spheric. seating diam | h | 1-31/32 in |
| Housing length | a | 7-3/32 in |
| Mounting holes distance | e | 5-1/2 in |
| Housing width | b | 1-31/32 in |
| Mounting hole dimension | s1 | 43/64 in |
| Mounting hole length | s2 | 25/32 in |
| Housing foot height | g | 23/32 in |
| Housing height | w | 3-3/4 in |
| Width of inner ring | B | 1.6929 in |
| Distance front side/bearing centre | n | 0.669 in |
| Bolt Size | 1/2 | |
| Mass bearing | 1.786 kg | |
Structure of UC Series Bearings
A typical UC bearing unit comprises the following key components:
- Pillow Block Housing:Typically made of grey cast iron or ductile iron (e.g., UC-P suffix), featuring mounting holes (plummer block base, with bolt holes or tapped holes), providing robust support and stability.
- Outer Spherical Deep Groove Ball Bearing:The bearing has an inner ring designed to fit onto a standard cylindrical shaft (e.g., tolerance h7). Its outer ring features a spherical outer surface that seats within the housing's spherical bore.
- Sealing Arrangement:Equipped with seals on both sides (usually rubber like NBR or FKM) to effectively prevent the ingress of contaminants, dirt, and moisture while retaining internal lubricant.
- Locking Device:Primarily utilizes an adapter sleeve (eccentric or withdrawal type) combined with a lock nut and washer. This unique mechanism allows the bearing to be firmly secured to the shaft using friction, greatly simplifying mounting and dismounting processes. (Note: Some UC variants use a tapered bore inner ring with a tapered adapter sleeve).
Key Characteristics of UC Series Bearings
Applications of UC Series Bearings
Thanks to their durability, ease of use, and reliable performance, UC bearings are found in a vast array of industries and applications:
- Agricultural Machinery (Tractors, Harvesters, Planters)
- Conveying Equipment (Belt Conveyors, Roller Conveyors)
- Ventilation and HVAC Systems (Fans)
- Material Handling Machinery
- Construction Equipment
- Food and Beverage Processing Lines
- Textile Machinery
- General Industrial Drives (Motors, Gearboxes, Pulleys)
Choosing UC Series Bearings means choosing reliability, cost-effectiveness, and operational efficiency.
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