Manufactured by CHG Bearing, the NN 3020 KTN3/SP is a precision Super-Precision Cylindrical Roller Bearings. Key dimensional parameters include a 100 mm bore diameter, a 150 mm outer diameter, and a 37 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 3020 KTN3/SP - Super-Precision Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NN 3020 KTN3/SP |
| 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) | 100 mm |
| Width (B) | 37 mm |
| Outer Diameter (D) | 150 mm |
| Minimum Chamfer Dimension rmin | 1.5 mm |
| Inner Ring Chamfer | 1.5 mm |
| Outer Ring Chamfer | 1 mm |
| End-face Height Difference h | 2 mm |
| Inner-Ring Land Diameter (L1 / d1) | 119.4 mm |
| Outer Ring Raceway Diameter E | 137 mm |
| Shaft Shoulder Diameter dₐ, min. | 108 mm |
| Housing Shoulder Diameter Dₐ, min. | 139 mm |
| Housing Shoulder Diameter Dₐ, max. | 142 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 151 kN |
| Basic Static Load Rating C₀ (kN) | 250 kN |
| Limiting Speed – Grease (r/min) | 7300 r/min |
| Limiting Speed – Oil-air (r/min) | 8300 r/min |
| Recommended Grease Quantity Grec (cm³) | 6.4 cm³ |
| Fatigue Load Limit Pᵤ (kN) | 29 kN |
| Axial Static Stiffness – Guideline Value (N/µm) | 2350 N/µm |
| Material | |
| Weight (kg) | 2.13 kg |
| Radial Internal Clearance | C1 mm |
| Internal Design & Weight | |
| Cage Type | Non-metallic Cage |
| Mounting Dimensions | |
| Lubrication Port Thread / Size Φ1 | 135.7 |
NN 3020 KTN3/SP 150 mm 100 mm 37 mm Frequently Asked Questions about NN 3020 KTN3/SP Super-Precision Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
The CHG Bearing NN 3020 KTN3/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.
As standard production, CHG Bearing subjects NN 3020 KTN3/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.
Engineered according to international ISO boundary plans, CHG Bearing supplies NN 3020 KTN3/SP with a precision bore diameter (d) of 100 mm, an outside diameter (D) of 150 mm, and a nominal ring width (B) of 37 mm. This configuration yields an effective cross-sectional wall thickness of 25.0 mm and an envelope ratio (D/d) of 1.5, delivering compact rigidity for OEM machinery housings.
Built for demanding industrial environments, the NN 3020 KTN3/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.
