Manufactured by CHG Bearing, the NN 3006 KTN/SP is a precision Super-Precision Cylindrical Roller Bearings. Key dimensional parameters include a 30 mm bore diameter, a 55 mm outer diameter, and a 19 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.
Technical Specifications
| Overview | |
|---|---|
| Part Number | NN 3006 KTN/SP NN 3006 KTN/SP |
| Brand | CHG® CHG® |
| Characteristics | |
| Bearing Type | Super-precision Cylindrical Roller Bearing Super-precision Cylindrical Roller Bearing |
| Design Type | Tapered Bore 1:12 Tapered Bore 1:12 |
| Structure (Drawing Reference) | Complete Bearing Complete Bearing |
| Number of Rows | 2 2 |
| Ring Type | None None |
| Design | NN Design NN Design |
| Tolerance Class | SP SP |
| Bearing Material | Bearing Steel Bearing Steel |
| Coating | None None |
| Sealing | None None |
| Lubricant | None None |
| Features | None None |
| Number of Flanges – Outer Ring | 0 0 |
| Number of Ribs – Inner Ring | 3 3 |
| Dimensions | |
| Bore Diameter (d) | 30 mm |
| Width (B) | 19 mm |
| Outer Diameter (D) | 55 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) | 40.1 mm |
| Outer Ring Raceway Diameter E | 48.5 mm |
| Shaft Shoulder Diameter dₐ, min. | 35 mm |
| Housing Shoulder Diameter Dₐ, min. | 49 mm |
| Housing Shoulder Diameter Dₐ, max. | 50 mm |
| Performance | |
| Basic Dynamic Load Rating C | 30.8 kN 6.92 klbf |
| Basic Static Load Rating C₀ | 37.5 kN 8.43 klbf |
| Limiting Speed – Grease | 17000 r/min 17000 r/min |
| Limiting Speed – Oil-air | 19000 r/min 19000 r/min |
| Reference Grease Quantity Gref (cm³) | 1 cm³ 1 cm³ |
| Fatigue Load Limit Pᵤ | 4 kN 0.9 klbf |
| Axial Static Stiffness – Guideline Value (N/µm) | 690 N/µm 690 N/µm |
| Material | |
| Weight | 0.179 kg 0.3946 lb |
| Radial Internal Clearance | C1 mm |
| Internal Design & Weight | |
| Cage Type | Non-metallic Cage Non-metallic Cage |
| Mounting Dimensions | |
| Lubrication Port Thread / Size Φ1 | 47.8 47.8 |
NN 3006 KTN/SP 55 mm 30 mm 19 mm Frequently Asked Questions about NN 3006 KTN/SP Super-Precision Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Absolutely. The CHG Bearing NN 3006 KTN/SP Super-Precision Cylindrical Roller Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF NN 3006 KTN/SP, FAG NN 3006 KTN/SP, NSK NN 3006 KTN/SP. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
To extend the trouble-free lifespan of CHG Bearing NN 3006 KTN/SP, 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.
Model NN 3006 KTN/SP 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 30 mm) and steep thermal gradients between inner and outer rings.
The CHG Bearing NN 3006 KTN/SP is rated for limiting speeds up to standard rated RPM under forced oil-mist or circulating oil lubrication regimes. When lubricated with factory-filled synthetic high-speed grease, safe continuous velocity is maintained at approximately 75% to 85% of the maximum nominal limit, preventing thermal runaway.
