Manufactured by CHG Bearing, the NN 3018 KTN9/HC5SPW33 is a precision Super-Precision Cylindrical Roller Bearings. Key dimensional parameters include a 90 mm bore diameter, a 140 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 3018 KTN9/HC5SPW33 - Super-Precision Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NN 3018 KTN9/HC5SPW33 |
| 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 | Composite Material |
| 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) | 90 mm |
| Width (B) | 37 mm |
| Outer Diameter (D) | 140 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) | 109.4 mm |
| Outer Ring Raceway Diameter E | 127 mm |
| Shaft Shoulder Diameter dₐ, min. | 98 mm |
| Housing Shoulder Diameter Dₐ, min. | 129 mm |
| Housing Shoulder Diameter Dₐ, max. | 132 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 138 kN |
| Basic Static Load Rating C₀ (kN) | 216 kN |
| Reference Grease Quantity Gref (cm³) | 11.1 cm³ |
| Fatigue Load Limit Pᵤ (kN) | 22 kN |
| Material | |
| Lubrication Groove Width | 5.5 mm |
| Lubrication Holes (qty × Ø mm) | 3 |
| Weight (kg) | 1.64 kg |
| Radial Internal Clearance | C1 mm |
| Internal Design & Weight | |
| Cage Type | Non-metallic Cage |
| Mounting Dimensions | |
| Lubrication Port Thread / Size Φ1 | 125.2 |
NN 3018 KTN9/HC5SPW33 140 mm 90 mm 37 mm Frequently Asked Questions about NN 3018 KTN9/HC5SPW33 Super-Precision Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To extend the trouble-free lifespan of CHG Bearing NN 3018 KTN9/HC5SPW33, preventive maintenance routines should monitor operating housing temperature (normally maintaining below 70°C) and conduct regular vibration FFT analysis to identify early raceway micro-pitting before unexpected line halts occur.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for NN 3018 KTN9/HC5SPW33. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
Quality starts with raw material selection: CHG Bearing crafts NN 3018 KTN9/HC5SPW33 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 3018 KTN9/HC5SPW33 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.
