Manufactured by CHG Bearing, the NNCF4968V is a precision Full Complement Cylindrical Roller Bearings. Key dimensional parameters include a 340 mm bore diameter, a 460 mm outer diameter, and a 118 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.
NNCF4968V - Full Complement Cylindrical Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | NNCF4968V |
| 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) | 300 r/min |
| Limiting Speed — Oil (r/min) | 560 r/min |
| Dimensions | |
| Bore Diameter (d) | 340 mm |
| Width (B) | 118 mm |
| Outer Diameter (D) | 460 mm |
| Raceway Diameter Ew | 427.1 mm |
| Performance | |
| Basic Dynamic Radial Load Rating Cr (kN) | 1690 kN |
| Basic Static Radial Load Rating C0r (kN) | 4300 kN |
| Material | |
| Mass (kg) | 58 kg |
| Chamfer Dimension r1,2 (min.) | 3 min. mm |
| Chamfer Dimension r3,4 (min.) | N/A min. mm |
NNCF4968V 340 mm 460 mm 118 mm Frequently Asked Questions about NNCF4968V 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 NNCF4968V, 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.
To safeguard CHG Bearing NNCF4968V against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (340 mm x 460 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
Standard batches of CHG Bearing NNCF4968V 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.
To ensure optimum performance of CHG Bearing NNCF4968V Full Complement Cylindrical Roller Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 340 mm bore. For the 460 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
