Manufactured by CHG Bearing, the QJ1068X3MB is a precision Four-Point Contact Ball Bearings. Key dimensional parameters include a 340 mm bore diameter, a 500 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.
QJ1068X3MB - Four-Point Contact Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | QJ1068X3MB |
| Brand | CHG® |
| Construction | Single Row |
| Characteristics | |
| Bearing Type | Four-Point Contact Ball Bearing |
| Series | QJ |
| Load Direction | Combined |
| Dimensions | |
| Bore Diameter (d) | 340 mm |
| Width (B) | 74 mm |
| Outer Diameter (D) | 500 mm |
| Chamfer Dimension r (min.) | 5 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 395 kN |
| Basic Static Load Rating C0 (kN) | 673 kN |
| Material | |
| Mass (kg) | 53.3 kg |
| Cage Material | Brass |
QJ1068X3MB 500 mm 340 mm 74 mm Frequently Asked Questions about QJ1068X3MB Four-Point Contact Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Built for demanding industrial environments, the QJ1068X3MB Four-Point Contact Ball 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.
In its sealed configuration (Open Type), CHG Bearing pre-charges QJ1068X3MB 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.
The CHG Bearing QJ1068X3MB is rated for limiting speeds up to standard rated RPM under forced oil-mist or circulating oil lubrication regimes. When lubricated with factory-filled synthetic high-speed grease, safe continuous velocity is maintained at approximately 75% to 85% of the maximum nominal limit, preventing thermal runaway.
Yes, 100% of QJ1068X3MB Four-Point Contact Ball Bearings leaving CHG Bearing production lines are subjected to multi-frequency Anderometer sound testing. All units satisfy baseline Z1V1 levels, with dedicated quiet-running electric motor quality (EMQ) lots certified to Z2V2 and Z3V3 standards for silent machinery integration.
