Manufactured by CHG Bearing, the NNCF4948V is a precision Full Complement Cylindrical Roller Bearings. Key dimensional parameters include a 240 mm bore diameter, a 320 mm outer diameter, and a 80 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.
NNCF4948V - Full Complement Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NNCF4948V |
| 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) | 450 r/min |
| Limiting Speed — Oil (r/min) | 850 r/min |
| Dimensions | |
| Bore Diameter (d) | 240 mm |
| Width (B) | 80 mm |
| Outer Diameter (D) | 320 mm |
| Raceway Diameter Ew | 300.1 mm |
| Performance | |
| Basic Dynamic Radial Load Rating Cr (kN) | 725 kN |
| Basic Static Radial Load Rating C0r (kN) | 1770 kN |
| Material | |
| Mass (kg) | 18.4 kg |
| Chamfer Dimension r1,2 (min.) | 2.1 min. mm |
| Chamfer Dimension r3,4 (min.) | N/A min. mm |
NNCF4948V 240 mm 320 mm 80 mm Frequently Asked Questions about NNCF4948V Full Complement Cylindrical Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
As standard production, CHG Bearing subjects NNCF4948V to precision bainite or martensite quenching, offering dimensional stability up to 120°C (248°F). For high-heat processing equipment, CHG Bearing also supplies custom S0 (150°C), S1 (200°C), or S2 (250°C) stabilization heat treatments upon request to prevent residual austenite transformation.
To match diverse operational dynamics, CHG Bearing supplies NNCF4948V 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.
To extend the trouble-free lifespan of CHG Bearing NNCF4948V, 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.
Absolutely. The CHG Bearing NNCF4948V Full Complement Cylindrical Roller Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF NNCF4948V, FAG NNCF4948V, NSK NNCF4948V. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
