Manufactured by CHG Bearing, the NN 3009 TN/SP 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 TN/SP - Super-Precision Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NN 3009 TN/SP |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Super-precision Cylindrical Roller Bearing |
| Design Type | Cylindrical Bore |
| 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 |
| 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) | 0.384 kg |
| Radial Internal Clearance | C1 mm |
| Internal Design & Weight | |
| Cage Type | Non-metallic Cage |
| Mounting Dimensions | |
| Lubrication Port Thread / Size Φ1 | 66.3 |
NN 3009 TN/SP 75 mm 45 mm 23 mm Frequently Asked Questions about NN 3009 TN/SP Super-Precision Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
As standard production, CHG Bearing subjects NN 3009 TN/SP to precision bainite or martensite quenching, offering dimensional stability up to 120°C (248°F). For high-heat processing equipment, CHG Bearing also supplies custom S0 (150°C), S1 (200°C), or S2 (250°C) stabilization heat treatments upon request to prevent residual austenite transformation.
The Open Type engineered for NN 3009 TN/SP by CHG Bearing utilizes precision non-contact metal shields or reinforced NBR/FKM contact lip seals. This barrier prevents particulate ingress, washdown fluids, and abrasive dust from reaching the raceways while eliminating grease leakage under centrifugal forces.
To ensure optimum performance of CHG Bearing NN 3009 TN/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 45 mm bore. For the 75 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
Beyond standard alloy steel, CHG Bearing can customize the NN 3009 TN/SP Super-Precision Cylindrical Roller Bearings using AISI 440C stainless steel, black oxide coating, zinc-nickel plating, or hybrid ceramic (Si3N4) balls for applications involving chemical exposure, marine salt fog, or galvanic current hazards.
