Manufactured by CHG Bearing, the NN 3019 KTN9/SP is a precision Super-Precision Cylindrical Roller Bearings. Key dimensional parameters include a 95 mm bore diameter, a 145 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 3019 KTN9/SP - Super-Precision Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NN 3019 KTN9/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) | 95 mm |
| Width (B) | 37 mm |
| Outer Diameter (D) | 145 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) | 114.4 mm |
| Outer Ring Raceway Diameter E | 132 mm |
| Shaft Shoulder Diameter dₐ, min. | 103 mm |
| Housing Shoulder Diameter Dₐ, min. | 134 mm |
| Housing Shoulder Diameter Dₐ, max. | 137 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 142 kN |
| Basic Static Load Rating C₀ (kN) | 232 kN |
| Limiting Speed – Grease (r/min) | 6000 r/min |
| Limiting Speed – Oil-air (r/min) | 6700 r/min |
| Reference Grease Quantity Gref (cm³) | 11.5 cm³ |
| Fatigue Load Limit Pᵤ (kN) | 28 kN |
| Axial Static Stiffness – Guideline Value (N/µm) | 2190 N/µm |
| Material | |
| Weight (kg) | 1.98 kg |
| Radial Internal Clearance | C1 mm |
| Internal Design & Weight | |
| Cage Type | Non-metallic Cage |
| Mounting Dimensions | |
| Lubrication Port Thread / Size Φ1 | 130.2 |
NN 3019 KTN9/SP 145 mm 95 mm 37 mm Frequently Asked Questions about NN 3019 KTN9/SP Super-Precision Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
For international ocean and air freight, CHG Bearing packs NN 3019 KTN9/SP with industrial VCI anti-corrosion barrier wrapping, sealed polybags, individual cartons, and fumigated ocean-worthy wooden crates. This multi-layer barrier guarantees rust-free storage for a minimum shelf life of 24 to 36 months.
Built for demanding industrial environments, the NN 3019 KTN9/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.
Every production batch of CHG Bearing NN 3019 KTN9/SP Super-Precision Cylindrical Roller Bearings comes with complete traceability. Upon shipment, CHG Bearing can provide EN 10204 3.1 Material Test Reports (MTR), Certificates of Conformity (CoC), spectral chemical composition analysis, and dimensional inspection sheets.
Yes, 100% of NN 3019 KTN9/SP Super-Precision Cylindrical Roller Bearings leaving CHG Bearing production lines are subjected to multi-frequency Anderometer sound testing. All units satisfy baseline Z1V1 levels, with dedicated quiet-running electric motor quality (EMQ) lots certified to Z2V2 and Z3V3 standards for silent machinery integration.
