Manufactured by CHG Bearing, the QJF/500/650/60MB is a precision Four-Point Contact Ball Bearings. Key dimensional parameters include a 500 mm bore diameter, a 650 mm outer diameter, and a 60 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.
QJF/500/650/60MB - Four-Point Contact Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | QJF/500/650/60MB |
| Brand | CHG® |
| Construction | Single Row |
| Characteristics | |
| Bearing Type | Four-Point Contact Ball Bearing |
| Series | QJF |
| Load Direction | Combined |
| Dimensions | |
| Bore Diameter (d) | 500 mm |
| Width (B) | 60 mm |
| Outer Diameter (D) | 650 mm |
| Chamfer Dimension r (min.) | 3 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 294 kN |
| Basic Static Load Rating C0 (kN) | 559 kN |
| Material | |
| Mass (kg) | 64 kg |
| Cage Material | PTFE |
QJF/500/650/60MB 650 mm 500 mm 60 mm Frequently Asked Questions about QJF/500/650/60MB Four-Point Contact Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
When fitting QJF/500/650/60MB over a 500 mm shaft, CHG Bearing strictly recommends uniform induction heating (controlled between 90°C and 110°C) or precision hydraulic press sleeves. Under no circumstances should direct impact blows be struck against the rings or cage, as shock loads cause brinelling indents and premature spalling.
In its sealed configuration (Open Type), CHG Bearing pre-charges QJF/500/650/60MB with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
To extend the trouble-free lifespan of CHG Bearing QJF/500/650/60MB, 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.
As standard production, CHG Bearing subjects QJF/500/650/60MB 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.
