Manufactured by CHG Bearing, the NN 3009 KTN/VQ497 is a precision Super-Precision Cylindrical Roller Bearings. Key dimensional parameters include a 45 mm bore diameter, a 75 mm outer diameter, and a 23 mm overall width. This component is designed to meet standard load requirements and ensure consistent operational performance. For comprehensive technical evaluation, please explore the detailed specifications, dimensional data, product images, and CAD drawings provided below. A complete PDF data sheet is also readily available for direct download to support your engineering and procurement needs.
NN 3009 KTN/VQ497 - Super-Precision Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NN 3009 KTN/VQ497 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Super-precision Cylindrical Roller Bearing |
| Design Type | Tapered Bore 1:12 |
| Structure (Drawing Reference) | Complete Bearing |
| Number of Rows | 2 |
| Ring Type | None |
| Design | NN Design |
| Tolerance Class | SP |
| Bearing Material | Bearing Steel |
| Coating | None |
| Sealing | None |
| Lubricant | None |
| Features | None |
| Number of Flanges – Outer Ring | 0 |
| Number of Ribs – Inner Ring | 3 |
| Dimensions | |
| Bore Diameter (d) | 45 mm |
| Width (B) | 23 mm |
| Outer Diameter (D) | 75 mm |
| Minimum Chamfer Dimension rmin | 1 mm |
| Inner Ring Chamfer | 1 mm |
| Outer Ring Chamfer | 0.6 mm |
| End-face Height Difference h | 1.5 mm |
| Inner-Ring Land Diameter (L1 / d1) | 56.3 mm |
| Outer Ring Raceway Diameter E | 67.5 mm |
| Shaft Shoulder Diameter dₐ, min. | 50 mm |
| Housing Shoulder Diameter Dₐ, min. | 69 mm |
| Housing Shoulder Diameter Dₐ, max. | 70 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 50.1 kN |
| Basic Static Load Rating C₀ (kN) | 65.5 kN |
| Limiting Speed – Grease (r/min) | 12000 r/min |
| Limiting Speed – Oil-air (r/min) | 14000 r/min |
| Reference Grease Quantity Gref (cm³) | 2.4 cm³ |
| Fatigue Load Limit Pᵤ (kN) | 7.65 kN |
| Axial Static Stiffness – Guideline Value (N/µm) | 940 N/µm |
| Material | |
| Weight (kg) | 0.375 kg |
| Radial Internal Clearance | NSTD mm |
| Internal Design & Weight | |
| Cage Type | Non-metallic Cage |
| Mounting Dimensions | |
| Lubrication Port Thread / Size Φ1 | 66.3 |
NN 3009 KTN/VQ497 75 mm 45 mm 23 mm Frequently Asked Questions about NN 3009 KTN/VQ497 Super-Precision Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Model NN 3009 KTN/VQ497 is manufactured by CHG Bearing in standard Normal clearance (CN) for ambient temperature transmission, and C3 or C4 clearance for heavy duty applications. C3 clearance compensates for radial shrinkage caused by tight shaft press-fits (bore 45 mm) and steep thermal gradients between inner and outer rings.
To extend the trouble-free lifespan of CHG Bearing NN 3009 KTN/VQ497, preventive maintenance routines should monitor operating housing temperature (normally maintaining below 70°C) and conduct regular vibration FFT analysis to identify early raceway micro-pitting before unexpected line halts occur.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing NN 3009 KTN/VQ497 correlates its dynamic capacity (standard dynamic) with equivalent dynamic loads. In controlled industrial settings with proper contamination-free filtration, field data confirms continuous operational longevity exceeding 20,000 to 50,000 service hours.
Quality starts with raw material selection: CHG Bearing crafts NN 3009 KTN/VQ497 inner and outer rings from high-purity High-Quality Chrome Steel (GCr15/100Cr6). Our raw billets undergo vacuum degassing and secondary ESR (electroslag remelting) processes to drastically eliminate non-metallic sulfide and oxide inclusions, elevating subsurface contact fatigue resistance.
