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-QJ-311-N2MA-Dimensions.webp)
The QJ 311 N2MA is a four-point contact angular contact ball bearing with a 55mm bore and 120mm outer diameter, crafted from sturdy chrome steel. It manages radial loads up to 30825 lbf and operates smoothly at speeds up to 10000 RPM.
Its single-row design with brass cage ensures durability, while the open construction 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. Suitable for applications like industrial gearboxes or heavy 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 eco-friendly use.
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How Does QJ 311 N2MA Bearing Reduce Friction?
QJ 311 N2MA Bearing features a four-point contact design, ensuring smooth operation under radial and axial loads.
The chrome steel rings and balls minimise friction, enhancing efficiency in high-speed applications.
With a maximum speed of 10,000 rpm, it maintains performance without excessive wear.
The brass cage provides stability, keeping the balls aligned for consistent motion.
Why Choose QJ 311 N2MA Bearing for Precision Tasks?
QJ 311 N2MA Bearing is precision-engineered with a P6 tolerance class, ideal for high-accuracy applications.
Its four-point contact design distributes loads evenly, reducing stress on individual components.
The chrome steel construction ensures durability, even under dynamic radial loads up to 30825 lbf.
This bearing is lubricated for smooth operation, making it suitable for demanding environments.
Built for Reliability: QJ 311 N2MA Bearing
QJ 311 N2MA Bearing is crafted from high-quality chrome steel, offering excellent resistance to wear.
Its brass cage enhances stability, ensuring reliable performance at speeds up to 10,000 rpm.
The bearing operates efficiently within a temperature range of -30° to 110°C.
With a static radial load capacity of 26550 lbf, it handles heavy-duty tasks with ease.
Steel vs Ceramic Bearings: Strengths of QJ 311 N2MA Bearing
QJ 311 N2MA Bearing uses chrome steel for both rings and balls, providing superior strength and durability.
Unlike ceramic bearings, it offers better resistance to impact loads and heavy radial forces.
The brass cage ensures smooth operation, reducing noise in high-speed applications.
With a dynamic radial load rating of 30825 lbf, it excels in demanding industrial settings.
Industrial Uses of QJ 311 N2MA Bearing
QJ 311 N2MA Bearing is commonly used in machine tools and industrial gearboxes, where its four-point contact design efficiently handles combined radial and axial loads. The open seal type allows for easy lubrication, extending service life in demanding conditions.
In automotive applications, QJ 311 N2MA Bearing fits well in wheel hubs and transmission systems, providing reliable performance under high-speed rotation. Its brass cage material reduces friction, ensuring smoother operation over time.
For robotics and automation, QJ 311 N2MA Bearing offers precise movement in robotic arms and CNC machinery. The P6 tolerance class ensures consistent accuracy, making it suitable for high-precision tasks.
In wind turbines, QJ 311 N2MA Bearing supports rotor shafts, where its dynamic radial load capacity withstands variable wind forces. The chrome steel construction enhances durability in outdoor environments.
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-QJ-311-N2MA-Drawing.webp)