Four-point Angular Contact Ball BearingsQJF234MB Bearing

Four-point Angular Contact Ball Bearings are a type of ball bearings that are designed to handle high radial and axial loads in both directions. These bearings feature four contact points between the inner and outer rings, providing increased rigidity and greater load capacity compared to other types of bearings.

With their unique design, four-point angular contact ball bearings are ideal for applications where space is limited and high precision is required. This type of bearing is commonly used in applications such as robotics, machine tools, and heavy machinery.

One of the key benefits of utilizing four-point angular contact ball bearings is their ability to handle both radial and axial loads simultaneously. This makes them an ideal choice for applications where both types of loads are present. Additionally, their enhanced load-bearing capacity allows for higher performance and longer lifespan, which results in lower maintenance costs and downtime.


Four-point angular contact ball bearings QJF234MB are designed for high-speed rotating machinery that requires high load capacity and accurate positioning. The bearing features four points of contact between the balls and raceways, which allows for a higher radial and axial load capacity than single-row angular contact ball bearings.

The QJF234MB bearing has a 170mm inner diameter, a 310mm outer diameter, and a width of 52mm. It is made from high-quality steel and is finished with precision grinding, ensuring a smooth and accurate surface for the balls to roll against. The bearing also features a brass cage that provides high-level retention of the balls, reducing friction, and noise.

This bearing is commonly used in various applications such as machine tool spindles, high-speed reducers, and precision measurement equipment. Additionally, the QJF234MB bearing is engineered to handle axial and radial loads in both directions, making it perfect for applications that require accurate positioning with high load capacity.

The QJF234MB bearing also features excellent lubrication properties, which ensures long-term durability and resistance to wear and tear. This feature also helps in reducing friction and noise. The bearing can operate at a maximum speed of approximately 6,000 RPM, making it ideal for a broad range of applications.

Overall, the Four-point angular contact ball bearings QJF234MB is the perfect solution for applications that require high-speed rotation, high load capacity, and accurate positioning. This bearing is made to last longer, provide excellent reliability, and reduce maintenance costs, making it an excellent investment for any application that requires precision and stability.


VAFEM (Shang Hai) Bearing Technology Co.,Ltd
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Four-point Angular Contact Ball Bearings

Dimension and Parameters

Bearing NO.
New :QJF234MB
Old :116234
Boundary dimensions(mm)
d :170
D :310
B :52
r 1.2min :4
Basic load ratings(kN)
Cr :397
Cor :600
Limiting speed(rpm)
Grease :1600
Oil :2200
Application point
a :168
Abutment and fillet dimensions(mm)
da min :188
Da max :292
ra max :3
Value
e :0.95
x :0.6
Y1 :0.66
Y2 :1.07
Y0 :0.58
Weight (kg)
Refer :19.5
Part Number:
d:
D:
B:
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