Manufactured by CHG Bearing, the NNCF4988V is a precision Full Complement Cylindrical Roller Bearings. Key dimensional parameters include a 440 mm bore diameter, a 600 mm outer diameter, and a 160 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.
NNCF4988V - Full Complement Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NNCF4988V |
| Brand | CHG® |
| Rolling Element | Cylindrical Roller |
| Construction | Double Row; Full Complement (No Cage) |
| Characteristics | |
| Bearing Type | Double-Row Full-Complement Cylindrical Roller Bearing |
| Series | NNCF |
| Load Direction | Radial |
| Limiting Speed — Grease (r/min) | 200 r/min |
| Limiting Speed — Oil (r/min) | 430 r/min |
| Dimensions | |
| Bore Diameter (d) | 440 mm |
| Width (B) | 160 mm |
| Outer Diameter (D) | 600 mm |
| Raceway Diameter Ew | 563.5 mm |
| Performance | |
| Basic Dynamic Radial Load Rating Cr (kN) | 3000 kN |
| Basic Static Radial Load Rating C0r (kN) | 7850 kN |
| Material | |
| Mass (kg) | 136 kg |
| Chamfer Dimension r1,2 (min.) | 4 min. mm |
| Chamfer Dimension r3,4 (min.) | N/A min. mm |
NNCF4988V 440 mm 600 mm 160 mm Frequently Asked Questions about NNCF4988V Full Complement Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
To extend the trouble-free lifespan of CHG Bearing NNCF4988V, 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.
Built for demanding industrial environments, the NNCF4988V Full Complement 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 NNCF4988V Full Complement 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.
Each NNCF4988V 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 (440 mm bore side) ensures perfect planar contact without edge binding.
