208-NPPB
200, 300 & 6400 Series Industrial Single Row Deep Groove Ball Bearings
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Materials
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208-NPPB Bearing Product Overview & Core Advantages
The 208-NPPB is a single row deep groove ball bearing designed for reliable performance in a wide range of industrial applications. Engineered to primarily support radial loads, this open-type bearing is characterized by its simple yet robust construction, offering high operational reliability and versatility. Manufactured to ABEC 1 | ISO P0 tolerance standards, it provides a cost-effective solution for general machinery where high precision is not the primary requirement. Its chrome steel construction ensures durability and a long service life under standard operating conditions.
Model Code Breakdown
- 208: Standard designation indicating the bearing size series and bore diameter (40mm).
- N: Signifies a snap ring groove on the outer ring, enabling secure axial location within a housing.
- PP: Indicates a Polyamide (Nylon) Cage, also known as a molded polymer cage. This cage offers the advantages of low weight, good sliding properties, and is suitable for high-speed operation.
- B: Denotes an increased internal radial clearance group (C3), which is beneficial for applications with significant thermal expansion or where interference fits are used.
208-NPPB Bearing Structural Features & Performance Benefits
Robust Construction: Built entirely from chrome steel (rings, balls, and cage), the 208-NPPB ensures consistent performance and resistance to wear.
High-Speed Capability: The lightweight Polyamide (PP) cage reduces centrifugal forces, contributing to the bearing's high limiting speed of 9,500 rpm.
Simplified Mounting: The snap ring groove (N) on the outer ring allows for easy and secure axial positioning, simplifying housing design and assembly.
Thermal Accommodation: The increased radial clearance (C3) accommodates differential thermal expansion between the shaft and housing, preventing preload and potential seizure in demanding thermal environments.
Versatile Lubrication: As an open bearing, it offers flexibility for the user to apply the most suitable grease or oil lubrication for the specific application.
208-NPPB Bearing Typical Application Areas
The 208-NPPB is widely used in various industrial sectors due to its balanced performance and reliability. Common applications include:
- Electric Motors and Gearboxes
- Industrial Fans and Blowers
- Conveyor Systems
- Agricultural Machinery
- Material Handling Equipment
