Manufactured by CHG Bearing, the NN 3036 K/SPC3W33 is a precision Super-Precision Cylindrical Roller Bearings. Key dimensional parameters include a 180 mm bore diameter, a 280 mm outer diameter, and a 74 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 3036 K/SPC3W33 - Super-Precision Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NN 3036 K/SPC3W33 |
| 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) | 180 mm |
| Width (B) | 74 mm |
| Outer Diameter (D) | 280 mm |
| Minimum Chamfer Dimension rmin | 2 mm |
| Inner Ring Chamfer | 2.1 mm |
| Outer Ring Chamfer | 1.1 mm |
| End-face Height Difference h | 3 mm |
| Inner-Ring Land Diameter (L1 / d1) | 218.2 mm |
| Outer Ring Raceway Diameter E | 255 mm |
| Shaft Shoulder Diameter dₐ, min. | 191 mm |
| Housing Shoulder Diameter Dₐ, min. | 257 mm |
| Housing Shoulder Diameter Dₐ, max. | 269 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 561 kN |
| Basic Static Load Rating C₀ (kN) | 1000 kN |
| Limiting Speed – Grease (r/min) | 3000 r/min |
| Limiting Speed – Oil-air (r/min) | 3400 r/min |
| Reference Grease Quantity Gref (cm³) | 138 cm³ |
| Fatigue Load Limit Pᵤ (kN) | 102 kN |
| Axial Static Stiffness – Guideline Value (N/µm) | 3970 N/µm |
| Material | |
| Lubrication Groove Width | 11.45 mm |
| Lubrication Holes (qty × Ø mm) | 6 |
| Weight (kg) | 16.2 kg |
| Radial Internal Clearance | C3 mm |
| Internal Design & Weight | |
| Cage Type | Machined Metal Cage |
| Mounting Dimensions | |
| Lubrication Port Thread / Size Φ1 | 248.9 |
NN 3036 K/SPC3W33 280 mm 180 mm 74 mm Frequently Asked Questions about NN 3036 K/SPC3W33 Super-Precision Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Model NN 3036 K/SPC3W33 is manufactured by CHG Bearing in standard Normal clearance (CN) for ambient temperature transmission, and C3 or C4 clearance for heavy duty applications. C3 clearance compensates for radial shrinkage caused by tight shaft press-fits (bore 180 mm) and steep thermal gradients between inner and outer rings.
To ensure optimum performance of CHG Bearing NN 3036 K/SPC3W33 Super-Precision Cylindrical Roller Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 180 mm bore. For the 280 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
Each NN 3036 K/SPC3W33 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 (180 mm bore side) ensures perfect planar contact without edge binding.
To extend the trouble-free lifespan of CHG Bearing NN 3036 K/SPC3W33, 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.
