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Plummer block bearings SN509
The SN509 bearing housing (typically referring to a split plummer block, such as the SNL509 or SN509 series) is designed to support shafts with a diameter of approximately 40 mm. It is suitable for rotating machinery operating under light to moderate loads and at medium-to-low speeds. It must be used in conjunction with an adapter sleeve or a cylindrical shaft to mount self-aligning ball bearings (e.g., 1209K) or spherical roller bearings (e.g., 2209K/22209KE).
**Compatible Bearings:** Commonly paired bearings include models 1209K, 2209K, 22209K, and C2209K. It is essential to ensure that the inner ring of the bearing establishes an interference fit with the adapter sleeve to securely lock its axial position.
**Applications:** Widely utilized in vertical mounting applications-such as conveyors, vibrating screens, injection molding machines, stone processing machinery, fans, speed reducers, and medical and food processing equipment-where alignment compensation and ease of maintenance are required.
**Sealing and Lubrication:** Standard configurations feature multi-lip contact seals or labyrinth seals to provide protection against dust and moisture. Lubrication is primarily grease-based (though select models support oil lubrication), requiring periodic replenishment (typically every 500 to 2,000 hours, depending on operating conditions).
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