QJ352-N2-MPA Baring

d	260 mm	Bore diameter
D	540 mm	Outside diameter
B	102 mm	Width
Cr	1,070,000 N	Basic dynamic load rating, radial
C0r	2,130,000 N	Basic static load rating, radial
Cur	59,000 N	Fatigue load limit, radial
nG	2,060 1/min	Limiting speed
nϑr	890 1/min	Reference speed
≈m	122 kg	Weight

Mounting dimensions

da min	286 mm	Minimum diameter shaft shoulder
Da max	514 mm	Maximum diameter of housing shoulder
ra max	5 mm	Maximum fillet radius

Dimensions

rmin	6 mm	Minimum chamfer dimension
D1	444.4 mm	Shoulder diameter outer ring
d1	359.35 mm	Shoulder diameter inner ring
a	280.1 mm	Distance between the apexes of the pressure cones
an	20 mm	Hight retaining slot
bn	15.5 mm	Width retaining slot
rn	3 mm	Radius retaining slot
	45 °	Angle retaining slot
α	35 °	Contact angle

Temperature range

Tmin	-30 °C	Operating temperature min.
Tmax	200 °C	Operating temperature max.

The QJ352-N2-MPA four-point contact ball bearing is a specialized bearing designed for high-performance applications that require precise load handling. This bearing type features a unique construction that incorporates four-point contact with the ball elements, allowing it to support both radial and axial loads effectively. One of the standout characteristics of the QJ352-N2-MPA is its ability to handle load combinations, which makes it particularly advantageous in applications where space is limited, yet high efficiency is required.

At the heart of the QJ352-N2-MPA's design is its split inner ring and a single outer ring, which facilitate an efficient distribution of loads. The four-point contact means that each ball supports two points of the load, significantly reducing surface stress on each ball and enhancing the overall life span of the bearing. This configuration not only leads to smoother operation but also minimizes friction, which is crucial in high-speed applications.

Another notable feature of the QJ352-N2-MPA is its versatility. This bearing is adept at managing both static and dynamic loads, making it ideal for varied applications ranging from industrial machinery to robotics and automotive components. In machine tools, for example, the QJ352-N2-MPA can support spindle applications where precision and speed are paramount. Its ability to maintain accuracy under both axial and radial loads makes it suitable for high-speed rotary systems, which are often subjected to fluctuating load conditions.

Furthermore, the QJ352-N2-MPA is designed with robust lubrication channels that enhance the bearing's performance and longevity. These channels ensure that lubricant is effectively distributed throughout the bearing, reducing wear and increasing operational efficiency. The bearing is tailored to ensure optimal sealing, which helps to protect against contaminants, a critical factor in prolonging its service life, especially in harsh operating environments.

In the automotive industry, the QJ352-N2-MPA finds its applications in various components such as wheel hubs, transmission systems, and even electric motors. Its compact design allows it to fit into tight spaces while still providing the reliability and strength needed to handle significant loads. This is increasingly important as modern vehicle designs move toward more intricate and space-efficient configurations.

Moreover, the QJ352-N2-MPA is also gaining traction in the field of robotics. As robotic systems become more advanced and are required to perform with greater precision, the demand for high-quality bearings that can support diverse load conditions has increased. The ability of the QJ352-N2-MPA to sustain loads from multiple directions while maintaining a compact design makes it an invaluable component in robotic joints and actuators.

Lastly, another significant aspect of the QJ352-N2-MPA is its ease of installation and maintenance. The bearing is engineered to minimize installation errors, ensuring a proper fit that enhances overall system performance. Regular maintenance is simplified due to the bearing's design, which allows for easy lubrication and inspection. This reliability in maintenance adds to its appeal across various industries where downtime can lead to significant productivity losses.

In conclusion, the QJ352-N2-MPA four-point contact ball bearing stands out as a highly efficient and versatile bearing solution suitable for a range of high-performance applications. Its unique design features allow it to manage complex load combinations while ensuring durability and precision. Whether used in industrial machinery, automotive systems, or robotics, this bearing provides exceptional performance, making it a preferred choice among engineers and designers in the quest for reliability and efficiency in mechanical systems.

NO.	d[mm]	D[mm]	B[mm]
QJ260-N2-MPA	300	540	85
QJ260-N2-MPA-C3	300	540	85
QJ352-N2-MPA	260	540	102
QJ1072-MPA	360	540	82
QJ1068-MPA	340	520	82
QJ1068-MPA-C3	340	520	82
QJ1068-N2-MPA	340	520	82
QJ348-N2-MPA	240	500	95
QJ348-N2-MPA-C3	240	500	95
QJ256-N2-MPA-C3	280	500	80
QJ348-N2-MPA-J30PD-C3	240	500	95
QJ348-N2-MPA-J30PC-C3	240	500	95
QJ1256-N2-MPA	280	500	90
QJ1256-N2-MPA-C3	280	500	90
QJ256-N2-MPA	280	500	80
QJ252-N2-MPA-J30PC-C3	260	480	80
QJ1064-N2-MPA	320	480	74
QJ1064-N2-MPA-C3	320	480	74
QJ1252-MPA	260	480	90
QJ1252-N2-MPA	260	480	90

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