Manufactured by CHG Bearing, the NN 3032 K/SPW33 is a precision Super-Precision Cylindrical Roller Bearings. Key dimensional parameters include a 160 mm bore diameter, a 240 mm outer diameter, and a 60 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 3032 K/SPW33 - Super-Precision Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NN 3032 K/SPW33 |
| 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 | Annular Lubrication Groove and Lubrication Holes |
| Number of Flanges – Outer Ring | 0 |
| Number of Ribs – Inner Ring | 3 |
| Dimensions | |
| Bore Diameter (d) | 160 mm |
| Width (B) | 60 mm |
| Outer Diameter (D) | 240 mm |
| Minimum Chamfer Dimension rmin | 2 mm |
| Inner Ring Chamfer | 2.1 mm |
| Outer Ring Chamfer | 1.1 mm |
| End-face Height Difference h | 2.5 mm |
| Inner-Ring Land Diameter (L1 / d1) | 190 mm |
| Outer Ring Raceway Diameter E | 219 mm |
| Shaft Shoulder Diameter dₐ, min. | 171 mm |
| Housing Shoulder Diameter Dₐ, min. | 221 mm |
| Housing Shoulder Diameter Dₐ, max. | 229 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 369 kN |
| Basic Static Load Rating C₀ (kN) | 655 kN |
| Limiting Speed – Grease (r/min) | 3600 r/min |
| Limiting Speed – Oil-air (r/min) | 4000 r/min |
| Reference Grease Quantity Gref (cm³) | 78 cm³ |
| Fatigue Load Limit Pᵤ (kN) | 69.5 kN |
| Axial Static Stiffness – Guideline Value (N/µm) | 3540 N/µm |
| Material | |
| Lubrication Groove Width | 8.5 mm |
| Lubrication Holes (qty × Ø mm) | 4.5 |
| Weight (kg) | 8.9 kg |
| Radial Internal Clearance | C1 mm |
| Internal Design & Weight | |
| Cage Type | Machined Metal Cage |
| Mounting Dimensions | |
| Lubrication Port Thread / Size Φ1 | 214.4 |
NN 3032 K/SPW33 240 mm 160 mm 60 mm Frequently Asked Questions about NN 3032 K/SPW33 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 3032 K/SPW33 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.
In its sealed configuration (Open Type), CHG Bearing pre-charges NN 3032 K/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.
As standard production, CHG Bearing subjects NN 3032 K/SPW33 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.
To safeguard CHG Bearing NN 3032 K/SPW33 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (160 mm x 240 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
