Manufactured by CHG Bearing, the NN 3019 TN9/SPW33 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/SPW33 - Super-Precision Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NN 3019 TN9/SPW33 |
| 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 | Annular Lubrication Groove and Lubrication Holes |
| 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 | |
| Lubrication Groove Width | 5.5 mm |
| Lubrication Holes (qty × Ø mm) | 3 |
| 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/SPW33 145 mm 95 mm 37 mm Frequently Asked Questions about NN 3019 TN9/SPW33 Super-Precision Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Model NN 3019 TN9/SPW33 is manufactured by CHG Bearing in standard Normal clearance (CN) for ambient temperature transmission, and C3 or C4 clearance for heavy duty applications. C3 clearance compensates for radial shrinkage caused by tight shaft press-fits (bore 95 mm) and steep thermal gradients between inner and outer rings.
Quality starts with raw material selection: CHG Bearing crafts NN 3019 TN9/SPW33 inner and outer rings from high-purity High-Quality Chrome Steel (GCr15/100Cr6). Our raw billets undergo vacuum degassing and secondary ESR (electroslag remelting) processes to drastically eliminate non-metallic sulfide and oxide inclusions, elevating subsurface contact fatigue resistance.
In its sealed configuration (Open Type), CHG Bearing pre-charges NN 3019 TN9/SPW33 with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
Absolutely. The CHG Bearing NN 3019 TN9/SPW33 Super-Precision Cylindrical Roller Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF NN 3019 TN9/SPW33, FAG NN 3019 TN9/SPW33, NSK NN 3019 TN9/SPW33. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
