Manufactured by CHG Bearing, the NN 3005 K/SP is a precision Super-Precision Cylindrical Roller Bearings. Key dimensional parameters include a 25 mm bore diameter, a 47 mm outer diameter, and a 16 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 3005 K/SP NN 3005 K/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) | 25 mm |
| Width (B) | 16 mm |
| Outer Diameter (D) | 47 mm |
| Minimum Chamfer Dimension rmin | 0.6 mm |
| Inner Ring Chamfer (min.) | 0.6 mm |
| Outer Ring Chamfer (min.) | 0.3 mm |
| End-face Height Difference h | 1 mm |
| Inner-Ring Land Diameter (L1 / d1) | 33.7 mm |
| Outer Ring Raceway Diameter E | 41.3 mm |
| Shaft Shoulder Diameter dₐ, min. | 29 mm |
| Housing Shoulder Diameter Dₐ, min. | 42 mm |
| Housing Shoulder Diameter Dₐ, max. | 43 mm |
| Performance | |
| Basic Dynamic Load Rating C | 26 kN 5.85 klbf |
| Basic Static Load Rating C₀ | 30 kN 6.74 klbf |
| Limiting Speed – Grease | 19000 r/min 19000 r/min |
| Limiting Speed – Oil-air | 22000 r/min 22000 r/min |
| Reference Grease Quantity Gref (cm³) | 0.9 cm³ 0.9 cm³ |
| Fatigue Load Limit Pᵤ | 3.15 kN 0.71 klbf |
| Axial Static Stiffness – Guideline Value (N/µm) | 640 N/µm 640 N/µm |
| Material | |
| Weight | 0.118 kg 0.2601 lb |
| Radial Internal Clearance | C1 mm |
| Internal Design & Weight | |
| Cage Type | Machined Metal Cage Machined Metal Cage |
| Mounting Dimensions | |
| Lubrication Port Thread / Size Φ1 | 40.6 40.6 |
NN 3005 K/SP 47 mm 25 mm 16 mm Frequently Asked Questions about NN 3005 K/SP Super-Precision Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Engineered according to international ISO boundary plans, CHG Bearing supplies NN 3005 K/SP with a precision bore diameter (d) of 25 mm, an outside diameter (D) of 47 mm, and a nominal ring width (B) of 16 mm. This configuration yields an effective cross-sectional wall thickness of 11.0 mm and an envelope ratio (D/d) of 1.88, delivering compact rigidity for OEM machinery housings.
Built for demanding industrial environments, the NN 3005 K/SP Super-Precision Cylindrical Roller Bearings by CHG Bearing boasts a dynamic load rating (Cr) of standard dynamic and a static load threshold (C0r) of standard static. The optimized internal raceway geometry balances stress distribution, mitigating edge loading even when operating under peak mechanical stresses.
Sourcing NN 3005 K/SP directly from CHG Bearing eliminates intermediate brokerage markups while granting you factory-direct engineering backup, rigorous ISO-certified quality assurance, competitive volume wholesale pricing, and dependable supply chain stability for Super-Precision Cylindrical Roller Bearings.
To ensure optimum performance of CHG Bearing NN 3005 K/SP Super-Precision Cylindrical Roller Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 25 mm bore. For the 47 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
