Manufactured by CHG Bearing, the NN 3011 KTN/SP is a precision Super-Precision Cylindrical Roller Bearings. Key dimensional parameters include a 55 mm bore diameter, a 90 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 3011 KTN/SP - Super-Precision Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NN 3011 KTN/SP |
| 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 | None |
| Number of Flanges – Outer Ring | 0 |
| Number of Ribs – Inner Ring | 3 |
| Dimensions | |
| Bore Diameter (d) | 55 mm |
| Width (B) | 26 mm |
| Outer Diameter (D) | 90 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) | 68.2 mm |
| Outer Ring Raceway Diameter E | 81 mm |
| Shaft Shoulder Diameter dₐ, min. | 61.5 mm |
| Housing Shoulder Diameter Dₐ, min. | 82 mm |
| Housing Shoulder Diameter Dₐ, max. | 83.5 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 69.3 kN |
| Basic Static Load Rating C₀ (kN) | 96.5 kN |
| Limiting Speed – Grease (r/min) | 10000 r/min |
| Limiting Speed – Oil-air (r/min) | 12000 r/min |
| Reference Grease Quantity Gref (cm³) | 3.6 cm³ |
| Fatigue Load Limit Pᵤ (kN) | 11.6 kN |
| Axial Static Stiffness – Guideline Value (N/µm) | 1220 N/µm |
| Material | |
| Weight (kg) | 0.579 kg |
| Radial Internal Clearance | C1 mm |
| Internal Design & Weight | |
| Cage Type | Non-metallic Cage |
| Mounting Dimensions | |
| Lubrication Port Thread / Size Φ1 | 79.7 |
NN 3011 KTN/SP 90 mm 55 mm 26 mm Frequently Asked Questions about NN 3011 KTN/SP Super-Precision Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Yes, 100% of NN 3011 KTN/SP 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.
To extend the trouble-free lifespan of CHG Bearing NN 3011 KTN/SP, 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.
Sourcing NN 3011 KTN/SP 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.
Standard batches of CHG Bearing NN 3011 KTN/SP conform strictly to ISO Class Normal (ABEC-1). For high-precision machine tool spindles, gearboxes, or robotics requiring tighter runouts, CHG Bearing can provide custom batches graded to ISO Class 6 (P6/ABEC-3) or ISO Class 5 (P5/ABEC-5) with 100% micrometer verification.
