Manufactured by CHG Bearing, the NNU4888/P5 is a precision Double Row Cylindrical Roller Bearings. Key dimensional parameters include a 440 mm bore diameter, a 540 mm outer diameter, and a 100 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.
NNU4888/P5 - Double Row Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NNU4888/P5 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Double Row Cylindrical Roller Bearing |
| Number of Rows | Double Row |
| Tolerance Class | P5 |
| Dimensions | |
| Bore Diameter (d) | 440 mm |
| Width (B) | 100 mm |
| Outer Diameter (D) | 540 mm |
| Bore Diameter Tolerance | -0.027 – 0 mm |
| Outside Diameter Tolerance | -0.028 – 0 mm |
| Width Tolerance | -0.50 – 0 mm |
| Enveloping Circle Diameter Fw | 468 mm |
| Inner Ring Chamfer | 2.1 min mm |
| Outer Ring Chamfer | 2.1 min mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 1210 kN |
| Basic Static Load Rating C0 (kN) | 3350 kN |
| Material | |
| Mass (kg) | 48 kg |
| Ring Material | Bearing Steel |
| Rolling Element Material | Bearing Steel |
| Cage Material | Brass |
NNU4888/P5 540 mm 440 mm 468 mm 100 mm Frequently Asked Questions about NNU4888/P5 Double Row Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Yes, 100% of NNU4888/P5 Double Row 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.
Absolutely. The CHG Bearing NNU4888/P5 Double Row Cylindrical Roller Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF NNU4888/P5, FAG NNU4888/P5, NSK NNU4888/P5. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
Standard batches of CHG Bearing NNU4888/P5 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.
Quality starts with raw material selection: CHG Bearing crafts NNU4888/P5 inner and outer rings from high-purity High-Quality Chrome Steel (GCr15/100Cr6). Our raw billets undergo vacuum degassing and secondary ESR (electroslag remelting) processes to drastically eliminate non-metallic sulfide and oxide inclusions, elevating subsurface contact fatigue resistance.
