Manufactured by CHG Bearing, the NN 3076 K/SPW33 is a precision Super-Precision Cylindrical Roller Bearings. Key dimensional parameters include a 380 mm bore diameter, a 560 mm outer diameter, and a 135 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 3076 K/SPW33 - Super-Precision Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NN 3076 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) | 380 mm |
| Width (B) | 135 mm |
| Outer Diameter (D) | 560 mm |
| Minimum Chamfer Dimension rmin | 4 mm |
| Inner Ring Chamfer | 5 mm |
| Outer Ring Chamfer | 8.2 mm |
| End-face Height Difference h | 11.9 mm |
| Inner-Ring Land Diameter (L1 / d1) | 448 mm |
| Outer Ring Raceway Diameter E | 513 mm |
| Shaft Shoulder Diameter dₐ, min. | 398 mm |
| Housing Shoulder Diameter Dₐ, min. | 517 mm |
| Housing Shoulder Diameter Dₐ, max. | 542 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 1680 kN |
| Basic Static Load Rating C₀ (kN) | 3450 kN |
| Limiting Speed – Grease (r/min) | 1300 r/min |
| Limiting Speed – Oil-air (r/min) | 1400 r/min |
| Fatigue Load Limit Pᵤ (kN) | 305 kN |
| Axial Static Stiffness – Guideline Value (N/µm) | 7780 N/µm |
| Material | |
| Lubrication Groove Width | 16.7 mm |
| Lubrication Holes (qty × Ø mm) | 9 |
| Weight (kg) | 112 kg |
| Radial Internal Clearance | C1 mm |
| Internal Design & Weight | |
| Cage Type | Machined Metal Cage |
NN 3076 K/SPW33 560 mm 380 mm 135 mm Frequently Asked Questions about NN 3076 K/SPW33 Super-Precision Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Each NN 3076 K/SPW33 produced in CHG Bearing manufacturing facilities features accurately profiled corner chamfers complying with DIN 5412 / ISO standard corner radii. When designing mating shafts and housing shoulders, machining an undercut or fillet radius strictly within the inner ring clearance limit (380 mm bore side) ensures perfect planar contact without edge binding.
Built for demanding industrial environments, the NN 3076 K/SPW33 Super-Precision Cylindrical Roller Bearings by CHG Bearing boasts a dynamic load rating (Cr) of standard dynamic and a static load threshold (C0r) of standard static. The optimized internal raceway geometry balances stress distribution, mitigating edge loading even when operating under peak mechanical stresses.
Beyond standard alloy steel, CHG Bearing can customize the NN 3076 K/SPW33 Super-Precision Cylindrical Roller Bearings using AISI 440C stainless steel, black oxide coating, zinc-nickel plating, or hybrid ceramic (Si3N4) balls for applications involving chemical exposure, marine salt fog, or galvanic current hazards.
As a primary manufacturer, CHG Bearing supports both trial batch evaluations and container-load supply for NN 3076 K/SPW33. Standard catalog sizes are stocked for rapid 3–7 day dispatch, while high-volume OEM production runs typically dispatch within 30–45 days.
