Bearing NN 3019 K/C181DIN KOYO






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Product detailed description
The KOYO NN 3019 K/C181DIN is a super-precision double-row cylindrical roller bearing that offers a unique balance between load-carrying capacity, rigidity, and speed. Its design includes three flanges on the inner ring and no flanges on the outer ring, accommodating axial displacement in both directions. The separable design simplifies mounting and dismounting, particularly when load conditions require both rings to have an interference fit. The tapered bore enables accurate adjustment of clearance or preload during mounting.
Technical Specifications:
- Bore Diameter: 95 mm
- Outside Diameter: 145 mm
- Width: 37 mm
- Basic Dynamic Load Rating: 142 kN
- Basic Static Load Rating: 232 kN
- Maximum Speed (Grease Lubrication): 6,000 r/min
- Maximum Speed (Oil-Air Lubrication): 6,700 r/min
- Number of Rows: 2
- Bore Type: Tapered 1:12
- Cage Material: Non-metallic
- Design: NN
- Number of Flanges (Outer Ring): 0
- Number of Flanges (Inner Ring): 3
- Radial Internal Clearance: C1
- Tolerance Class: Class SP
- Material: Bearing Steel
- Sealing: None
- Lubricant: None
- Relubrication Feature: Annular groove and lubrication holes
This bearing is ideal for applications requiring high rigidity and running accuracy, such as machine tool spindles and precision equipment. Its design minimizes noise, vibration, and heat generation, ensuring smooth operation under demanding conditions.

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