Manufactured by CHG Bearing, the NN 3012 KTN/SPW33 is a precision Super-Precision Cylindrical Roller Bearings. Key dimensional parameters include a 60 mm bore diameter, a 95 mm outer diameter, and a 26 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 3012 KTN/SPW33 - Super-Precision Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NN 3012 KTN/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) | 60 mm |
| Width (B) | 26 mm |
| Outer Diameter (D) | 95 mm |
| Minimum Chamfer Dimension rmin | 1 mm |
| Inner Ring Chamfer | 1.1 mm |
| Outer Ring Chamfer | 0.6 mm |
| End-face Height Difference h | 1.5 mm |
| Inner-Ring Land Diameter (L1 / d1) | 73.3 mm |
| Outer Ring Raceway Diameter E | 86.1 mm |
| Shaft Shoulder Diameter dₐ, min. | 66.5 mm |
| Housing Shoulder Diameter Dₐ, min. | 87 mm |
| Housing Shoulder Diameter Dₐ, max. | 88.5 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 73.7 kN |
| Basic Static Load Rating C₀ (kN) | 106 kN |
| Limiting Speed – Grease (r/min) | 9500 r/min |
| Limiting Speed – Oil-air (r/min) | 11000 r/min |
| Reference Grease Quantity Gref (cm³) | 3.8 cm³ |
| Fatigue Load Limit Pᵤ (kN) | 12.7 kN |
| Axial Static Stiffness – Guideline Value (N/µm) | 1330 N/µm |
| Material | |
| Lubrication Groove Width | 3.8 mm |
| Lubrication Holes (qty × Ø mm) | 2 |
| Weight (kg) | 0.624 kg |
| Radial Internal Clearance | C1 mm |
| Internal Design & Weight | |
| Cage Type | Non-metallic Cage |
| Mounting Dimensions | |
| Lubrication Port Thread / Size Φ1 | 84.9 |
NN 3012 KTN/SPW33 95 mm 60 mm 26 mm Frequently Asked Questions about NN 3012 KTN/SPW33 Super-Precision Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Yes, CHG Bearing works closely with industrial OEMs and brand distributors. We offer turnkey custom engineering for NN 3012 KTN/SPW33, including laser-etched customer logos, custom internal radial clearances, specialized grease formulations, and bespoke protective packaging.
Sourcing NN 3012 KTN/SPW33 directly from CHG Bearing eliminates intermediate brokerage markups while granting you factory-direct engineering backup, rigorous ISO-certified quality assurance, competitive volume wholesale pricing, and dependable supply chain stability for Super-Precision Cylindrical Roller Bearings.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing NN 3012 KTN/SPW33 correlates its dynamic capacity (standard dynamic) with equivalent dynamic loads. In controlled industrial settings with proper contamination-free filtration, field data confirms continuous operational longevity exceeding 20,000 to 50,000 service hours.
Yes, 100% of NN 3012 KTN/SPW33 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.
