Manufactured by CHG Bearing, the QJF1064MB is a precision Four-Point Contact Ball Bearings. Key dimensional parameters include a 320 mm bore diameter, a 480 mm outer diameter, and a 74 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.
QJF1064MB - Four-Point Contact Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | QJF1064MB |
| Brand | CHG® |
| Construction | Single Row |
| Characteristics | |
| Bearing Type | Four-Point Contact Ball Bearing |
| Series | QJF |
| Load Direction | Combined |
| Dimensions | |
| Bore Diameter (d) | 320 mm |
| Width (B) | 74 mm |
| Outer Diameter (D) | 480 mm |
| Chamfer Dimension r (min.) | 4 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 379 kN |
| Basic Static Load Rating C0 (kN) | 641 kN |
| Material | |
| Mass (kg) | 50.2 kg |
| Cage Material | Brass |
QJF1064MB 480 mm 320 mm 74 mm Frequently Asked Questions about QJF1064MB Four-Point Contact Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Model QJF1064MB is manufactured by CHG Bearing in standard Normal clearance (CN) for ambient temperature transmission, and C3 or C4 clearance for heavy duty applications. C3 clearance compensates for radial shrinkage caused by tight shaft press-fits (bore 320 mm) and steep thermal gradients between inner and outer rings.
When fitting QJF1064MB over a 320 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.
The Open Type engineered for QJF1064MB by CHG Bearing utilizes precision non-contact metal shields or reinforced NBR/FKM contact lip seals. This barrier prevents particulate ingress, washdown fluids, and abrasive dust from reaching the raceways while eliminating grease leakage under centrifugal forces.
To safeguard CHG Bearing QJF1064MB against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (320 mm x 480 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
