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-QJ-311-MA-Dimensions.webp)
The QJ 311 MA is a four-point contact angular contact ball bearing with a 55mm bore and 120mm outer diameter, crafted from sturdy chrome steel. It handles radial loads up to 30825 lbf and operates smoothly at speeds up to 10000 RPM.
Its single-row design and brass cage ensure durability, while the open seal allows for easy lubrication. The bearing performs reliably in temperatures ranging from -30°C to 110°C.
This model is interchangeable with SKF bearings, making it a practical choice for replacements. Ideal for applications like gearboxes or industrial machinery where radial and axial loads are present.
Weighing 1.75kg, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and environmentally friendly use.
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Why Choose QJ 311 MA Bearing for Precision Tasks?
QJ 311 MA Bearing features a four-point contact design, offering high precision and stability in angular applications.
Its chrome steel rings and balls ensure durability and smooth operation under heavy radial loads.
The brass cage maintains ball alignment, reducing friction and extending the bearing’s service life.
With a maximum speed of 10,000 rpm, it delivers reliable performance in high-speed scenarios.
QJ 311 MA Bearing operates efficiently in temperatures ranging from -30° to 110°C, suitable for various environments.
Its P6 tolerance class ensures consistent performance, making it ideal for precision machinery.
Industrial Uses of QJ 311 MA Bearing
QJ 311 MA Bearing is commonly used in machine tools, where its four-point contact design handles combined radial and axial loads efficiently. The open seal type allows for easy lubrication, ensuring long service life in demanding conditions.
In automotive applications, QJ 311 MA Bearing supports gearboxes and wheel hubs, providing smooth rotation under heavy loads. Its brass cage enhances durability, making it suitable for high-speed operations.
For automation systems, QJ 311 MA Bearing is ideal for robotic arms and conveyor belts, thanks to its precise P6 tolerance. The chrome steel construction ensures reliable performance in continuous operation.
Where Is QJ 311 MA Bearing Used?
QJ 311 MA Bearing finds its place in industrial fans, where its ability to manage thrust and radial loads keeps systems running smoothly. The lubricated design reduces friction, extending maintenance intervals.
In medical imaging devices, QJ 311 MA Bearing offers quiet and precise movement, essential for accurate diagnostics. The temperature range of -30° to 110°C ensures stability in various environments.
Built for Heavy-Duty Use: QJ 311 MA Bearing
QJ 311 MA Bearing excels in construction equipment, handling heavy loads with ease. Its brass cage and chrome steel components provide excellent wear resistance in rugged conditions.
For 3D printers, QJ 311 MA Bearing ensures precise linear motion, crucial for high-quality prints. The metric sizing makes it compatible with a wide range of machinery.
Automotive vs Aerospace: Applications of QJ 311 MA Bearing
In automotive systems, QJ 311 MA Bearing supports transmissions, offering reliable performance under stress. The four-point contact design distributes loads evenly, reducing wear.
For aerospace applications, QJ 311 MA Bearing is used in landing gear mechanisms, where its precision and durability are vital. The P6 tolerance ensures consistent performance in critical situations.
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-QJ-311-MA-Drawing.webp)