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H718-2RZC/P4 Double Sealed Angular Contact Ball Bearings

H718-2RZC/P4 double-sealed angular contact ball bearings can withstand radial and one direction axial loads at the same time, with high rotational speeds, and are mainly used in precision machine tools and other high-precision, high-speed parts. This kind of bearings in bear radial load, bearing inner ring will produce axial force, therefore, usually need to withstand the opposite direction of axial bearing supporting installation use.

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	Type	Main dimensions			Rated load		Rated speed
					Dynamics	Static	Speed limit
Mail		d[mm]	D[mm]	B[mm]	C[kN]	C₀[kN]	[r/min]
	S71864 ACD/P4 2RZ	320	400	38	150.6N	235.17N	3008 r/min
	S71860 ACD/P4 2RZ	300	380	38	150.6N	235.16N	3007 r/min
	S71856 CD/P4 2RZ	280	350	33	159.7N	249.7N	3506 r/min
	S71856 ACD/P4 2RZ	280	350	33	150.6N	235.15N	3006 r/min
	S71852 CD/P4 2RZ	260	320	28	159.7N	249.6N	3505 r/min
	S71848 CD/P4 2RZ	240	300	28	159.7N	249.5N	3504 r/min
	S71852 ACD/P4 2RZ	260	320	28	150.6N	235.14N	3005 r/min
	S71848 ACD/P4 2RZ	240	300	28	150.6N	235.13N	3004 r/min
	S71844 CD/P4 2RZ	220	270	24	159.7N	249.4N	3503 r/min
	S71840 CD/P4 2RZ	200	250	24	159.7N	249.3N	3502 r/min
	S71838 CD/P4 2RZ	190	240	24	159.7N	249.2N	3501 r/min
	S71844 ACD/P4 2RZ	220	270	24	150.6N	235.12N	3003 r/min
	S71840 ACD/P4 2RZ	200	250	24	150.6N	235.11N	3002 r/min
	S71838 ACD/P4 2RZ	190	240	24	150.6N	235.1N	3001 r/min
	S71836 CD/P4 2RZ	180	225	22	159.7N	249.1N	3500 r/min
	S71834 CD/P4 2RZ	170	215	22	66.5N	123.4N	3800 r/min
	S71836 ACD/P4 2RZ	180	225	22	150.6N	235.9N	3000 r/min
	S71834 ACD/P4 2RZ	170	215	22	62.4N	116.5N	3300 r/min
	S71832 CD/P4 2RZ	160	200	20	52.4N	97.7N	4000 r/min
	S71830 CD/P4 2RZ	150	190	20	51.2N	92N	4600 r/min

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Dentail

Structural Features: The H718 - 2RZC/P4 is a double-sealed angular contact ball bearing. It has a unique structural design. A set of steel balls is installed between the two rings, and the contact points of the steel balls with the rings form a certain angle with the axis of the bearing. This design enables the bearing to withstand both radial loads and a certain amount of axial loads simultaneously. The bearing is equipped with a double-sealed structure. Generally, sealing rings made of materials such as rubber or plastic are installed on both sides of the bearing. This can effectively prevent external pollutants such as dust, moisture, and impurities from entering the inside of the bearing. At the same time, it can also prevent the leakage of internal lubricating grease, thus ensuring that the bearing can operate normally in various working environments.

Precision Grade: The precision grade of this bearing is Grade 4, which belongs to a relatively high precision level. There are strict requirements and high standards for the dimensional accuracy, rotational accuracy, and surface roughness of the bearing.

Materials and Manufacturing Processes: It is usually manufactured from high-quality bearing steel, such as GCr15. This type of steel has high strength, high hardness, excellent wear resistance, and corrosion resistance, which can ensure that the bearing maintains stable performance during long-term use.

Application

The bearings can be used in the following industries

Machine Tool Industry: It is commonly used in the spindle components of machine tools, such as machining centers, CNC lathes, and grinding machines. During the machining process, the machine tool spindle needs to maintain high-precision rotational motion. The H718 - 2RZC/P4 double-sealed angular contact ball bearing can provide stable support for the spindle, withstand the radial and axial loads generated by the spindle during the cutting process, ensure the rotational accuracy and rigidity of the spindle, and thus improve the dimensional accuracy and surface quality of the machined parts.
Motor Field: It is widely applied in some high-precision motors, such as servo motors and spindle motors. These motors require precise speed control and low vibration performance. This bearing can meet the stability requirements of the motor during high-speed rotation, reduce the friction and wear of the bearing, and improve the efficiency and service life of the motor. Meanwhile, the double-sealed structure can prevent the leakage of the lubricating oil inside the motor, avoiding the contamination of the motor windings and affecting the performance of the motor.
Industrial Automation Equipment: Such as robot joints and the transmission components of automated production lines. In robot joints, it is necessary to withstand complex loads, including radial forces, axial forces, and bending moments, etc. The H718 - 2RZC/P4 bearing can provide reliable support, ensure the motion accuracy and flexibility of the robot joints, and achieve the precise movements of the robot. In the transmission components of automated production lines, this bearing can ensure the stability and reliability of the transmission system, reduce the downtime of the production line caused by bearing failures, and improve production efficiency.
Medical Devices: It is also applied in some precision medical devices, such as CT scanners and magnetic resonance imaging (MRI) equipment. These devices have extremely high requirements for precision and stability. Even a slight error in the bearing may affect the imaging quality or detection accuracy of the devices. The high precision and good stability of the H718 - 2RZC/P4 double-sealed angular contact ball bearing can meet the strict requirements of medical devices, ensuring the normal operation of the devices and the accuracy of the detection results.