Manufactured by CHG Bearing, the NNU49/630K/W33P5 is a precision Double Row Cylindrical Roller Bearings. Key dimensional parameters include a 630 mm bore diameter, a 850 mm outer diameter, and a 218 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.
NNU49/630K/W33P5 - Double Row Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NNU49/630K/W33P5 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Double Row Cylindrical Roller Bearing |
| Number of Rows | Double Row |
| Tolerance Class | P5 |
| Dimensions | |
| Bore Diameter (d) | 630 mm |
| Width (B) | 218 mm |
| Outer Diameter (D) | 850 mm |
| Bore Diameter Tolerance | 0 – +0.050 mm |
| Outside Diameter Tolerance | -0.040 – 0 mm |
| Width Tolerance | -0.50 – 0 mm |
| Enveloping Circle Diameter Fw | 704 mm |
| Inner Ring Chamfer | 6 min mm |
| Outer Ring Chamfer | 6 min mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 4050 kN |
| Basic Static Load Rating C0 (kN) | 11000 kN |
| Material | |
| Mass (kg) | 364 kg |
| Ring Material | Bearing Steel |
| Rolling Element Material | Bearing Steel |
| Cage Material | Brass |
| Lubrication Groove Width | 23.5 mm |
| Lubrication Holes (qty × Ø mm) | 3 × Ø12 |
NNU49/630K/W33P5 850 mm 630 mm 704 mm 218 mm Frequently Asked Questions about NNU49/630K/W33P5 Double Row Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To match diverse operational dynamics, CHG Bearing supplies NNU49/630K/W33P5 with multiple cage configurations: high-strength pressed steel ribbon cages for standard duty, solid machined brass cages (M/CA) for heavy vibration and shock loads, or lightweight glass-fiber reinforced polyamide cages (TN9/TVP) for high acceleration and ultra-low noise.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing NNU49/630K/W33P5 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.
Engineered according to international ISO boundary plans, CHG Bearing supplies NNU49/630K/W33P5 with a precision bore diameter (d) of 630 mm, an outside diameter (D) of 850 mm, and a nominal ring width (B) of 218 mm. This configuration yields an effective cross-sectional wall thickness of 110.0 mm and an envelope ratio (D/d) of 1.35, delivering compact rigidity for OEM machinery housings.
Absolutely. The CHG Bearing NNU49/630K/W33P5 Double Row Cylindrical Roller Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF NNU49/630K/W33P5, FAG NNU49/630K/W33P5, NSK NNU49/630K/W33P5. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
