BNR10/19 Main Shaft Thrust Bearing Ultra-high Frequency-Luoyang Rockewell Precision Bearing Co.,Ltd

BNR10/19 Main Shaft Thrust Bearing Ultra-high Frequency

BNR10/19 ultra-high speed thrust spindle bearings are available with a 30° contact angle for high speed requirements or higher rigidity, as well as a 40° contact angle for BTR. As a bearing set, they can withstand high axial loads from both sides and feature a small ball design for high speed performance, high stiffness and low heat generation.

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BNR10/19 Main Shaft Thrust Bearing Ultra-high Frequency

	Type	Main dimensions			Rated load		Rated speed
					Dynamics	Static	Speed limit
Mail		d[mm]	D[mm]	B[mm]	C[kN]	C₀[kN]	[r/min]
	95BNR10H	95	145	24	35.5	34.5	23400.0
	90BNR10X	90	140	24	35.0	33.0	28700.0
	90BNR10S	90	140	24	35.0	33.0	17400.0
	90BNR10H	90	140	24	35.0	33.0	24400.0
	85BNR10X	85	130	22	26.8	25.7	30700.0
	85BNR10S	85	130	22	26.8	25.7	18700.0
	85BNR10H	85	130	22	26.8	25.7	26100.0
	80BNR10X	80	125	22	26.5	24.5	32200.0
	80BNR10S	80	125	22	26.5	24.5	19600.0
	80BNR10H	80	125	22	26.5	24.5	27400.0
	75BNR10X	75	115	20	22.6	20.7	34800.0
	75BNR10S	75	115	20	22.6	20.7	21100.0
	75BNR10H	75	115	20	22.6	20.7	29500.0
	70BNR10X	70	110	20	22.3	19.8	38700.0
	70BNR10S	70	110	20	22.3	19.8	22300.0
	70BNR10H	70	110	20	22.3	19.8	31200.0
	65BNR10X	65	100	18	16.2	14.8	40000.0
	65BNR10S	65	100	18	16.2	14.8	24300.0
	65BNR10H	65	100	18	16.2	14.8	34000.0
	60BNR10X	60	95	18	15.6	13.7	42600.0

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Dentail

Structural Characteristics

The BNR10/19 main shaft thrust bearing adopts a design specifically optimized for high-frequency working conditions. It has a unique roller arrangement structure. When the bearing bears axial thrust, it can evenly distribute the load, effectively avoiding the occurrence of stress concentration points, and thus ensuring the stability of the bearing during ultra-high frequency operation.
It is usually equipped with high-precision cages, such as nylon cages made of special materials or high-precision metal cages. The cage can not only accurately guide the movement of the rollers, reducing the friction and collision between the rollers, but also has minimal deformation of its own during high-speed operation, ensuring the dynamic performance of the bearing.
Its rings are generally finely ground, which effectively reduces the friction during rolling contact. At the same time, it improves the rotational accuracy of the bearing, meeting the strict requirements for accuracy during ultra-high frequency operation.

Performance Advantages

Excellent High-frequency Adaptability: It can operate stably and continuously at ultra-high frequencies. This benefits from its optimized structural design and precise manufacturing process, effectively reducing the fatigue damage caused by high-frequency vibrations and greatly extending the service life of the bearing.
High Load-bearing Capacity: Although it is mainly used to bear axial thrust, its design also takes into account a certain radial load-bearing capacity. It can still perform well in complex force environments and meet the load requirements in various working scenarios.
Low Friction and Low Heat Generation: Due to the precise cooperation among the rollers, rings, and cages, the friction coefficient during operation is controlled at an extremely low level, thus reducing heat generation. This avoids problems such as lubrication failure and material performance degradation caused by overheating, ensuring the stable performance of the bearing during long-term high-frequency operation.

Application

The bearings can be used in the following industries

High-speed Precision Machining Machine Tools
In machining processes such as high-speed milling and turning, the machine tool spindle needs to frequently perform high-speed start-stop and forward-reverse rotation operations, and at the same time bear the huge axial thrust generated during tool cutting. The BNR10/19 bearing, with its ultra-high frequency adaptability and high load-bearing capacity, can provide reliable support for the spindle, ensuring the machining accuracy and surface quality.
For example, in the precision machining of aerospace components, for difficult-to-machine materials such as titanium alloys and nickel-based alloys, high-speed spindles need to be used in combination with advanced tools for efficient cutting. This bearing can ensure the stability and accuracy of the machining process, helping to produce components that meet strict quality standards.
Semiconductor Manufacturing Equipment
In key semiconductor manufacturing equipment such as lithography machines and etching machines, the precise movement and positioning of silicon wafers are crucial. The bearing needs to drive the worktable carrying the silicon wafers at a high frequency and with high precision. The ultra-low friction characteristics and high-precision rotational performance of the BNR10/19 bearing can meet this requirement, ensuring that the position accuracy during the silicon wafer processing is controlled at the nanometer level and improving the yield rate of chip manufacturing.
At the same time, due to the extremely high cleanliness requirements of the semiconductor manufacturing environment, the good sealing design (if any) of this bearing can effectively prevent external dust and particles from entering, avoiding pollution to the chip manufacturing process and ensuring the stable operation of the equipment.
High-end Medical Devices
Devices such as medical centrifuges and high-speed rotary scalpels require the bearing to have extremely high reliability during high-frequency operation. The stable performance of the BNR10/19 bearing can ensure that the centrifuge rotates smoothly when separating blood samples or cell samples at high speed, reducing the shaking and damage of the samples and ensuring the accuracy of the test results.
For high-speed rotary scalpels, their precise high-frequency rotation is directly related to the accuracy and safety of the surgery. This bearing provides stable power transmission for the scalpel, helping doctors to complete fine surgical operations and reducing the surgical risk.
Cooling Fans of Communication Base Station Equipment
With the development of 5G communication technology, the heat generation of base station equipment has increased sharply, and the cooling fans need to operate at high speed and high frequency to ensure the heat dissipation of the equipment. The low friction and high thermal stability of the BNR10/19 bearing enable the fan to operate efficiently for a long time, reducing the risk of fan shutdown caused by bearing failure, ensuring the stable operation of the base station equipment, and reducing the probability of communication interruption.
It has a certain radial load-bearing capacity, which can deal with the small amount of radial force generated by the air flow disturbance during the fan operation, further improving the overall reliability of the fan.