Manufactured by CHG Bearing, the NN 3019 TN9/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 TN9/SP - Super-Precision Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NN 3019 TN9/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) | 95 mm |
| Width (B) | 37 mm |
| Outer Diameter (D) | 145 mm |
| Minimum Chamfer Dimension rmin | 1.5 mm |
| Inner Ring Chamfer | 1.5 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) | 2.05 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 TN9/SP 145 mm 95 mm 37 mm Frequently Asked Questions about NN 3019 TN9/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 3019 TN9/SP with a precision bore diameter (d) of 95 mm, an outside diameter (D) of 145 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 1.53, delivering compact rigidity for OEM machinery housings.
Every production batch of CHG Bearing NN 3019 TN9/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.
When fitting NN 3019 TN9/SP over a 95 mm shaft, CHG Bearing strictly recommends uniform induction heating (controlled between 90°C and 110°C) or precision hydraulic press sleeves. Under no circumstances should direct impact blows be struck against the rings or cage, as shock loads cause brinelling indents and premature spalling.
The CHG Bearing NN 3019 TN9/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.
