Thin-walled Bearing With Nylon Retainer (Series 38, 39, 30)-Luoyang Rockewell Precision Bearing Co.,Ltd

Thin-walled Bearing With Nylon Retainer (Series 38, 39, 30)

Thin-walled bearing with nylon retainer (series 38, 39, 30) is a type of rolling bearing with unique structural and performance characteristics.

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Type	Main dimensions	Rated load	Rated speed
3919-2RS	95	130	26	49.903	59.995	-
3918-2RS	90	125	26	48.678	57.115	-
3917-2RS	85	120	26	28.851	36.911	-
3916-2RS	80	110	23	32.35	38.808	-
3915-2RS	75	105	23	39.809	43.257	-
3914-2RS	70	100	23	27.908	29.97	-
3913-2RS	65	90	19	22.955	25.523	-
3912-2RS	60	85	19	23.345	24.393	-
3911-2RS	55	80	19	23.72	24.333	-
3910-2RS	50	72	16	18.299	18.045	-
3909-2RS	45	68	16	15.727	16.245	-
3908-2RS	40	62	16	11.587	11.464	-
3907-2RS	35	55	15	11.459	10.81	-
3906-2RS	30	47	13	10.8	9.246	-
3905-2RS	25	42	13	9.972	7.713	-
3904-2RS	20	37	13	9.013	6.238	-
3903-2RS	17	30	10	4.991	3.791	-
3902-2RS	15	28	10	4.55	3.127	-
3901-2RS	12	24	10	4.363	2.723	-
3900-2RS	10	22	10	4.088	2.365	-

Type

Main dimensions

Rated load

Rated speed

Dynamics

Static

Speed limit

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d[mm]

D[mm]

B[mm]

C[kN]

C₀[kN]

[r/min]

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Structural Features:
- Thin-walled Design: It has relatively thin rings. This design makes the bearing lighter in weight and enables it to provide good load-bearing capacity in limited spaces, making it suitable for occasions with high space requirements.
- Nylon Retainer: A nylon retainer is used. Nylon has excellent wear resistance, self-lubrication properties, and a light weight. It can effectively hold the position of the rolling elements, reduce the collision and friction between the rolling elements, improve the running accuracy and stability of the bearing, and also reduce noise.
- High-precision Manufacturing: These bearings usually adopt high-precision processing techniques to ensure the dimensional accuracy and rotational accuracy of the bearings. For example, the form and position tolerances such as the roundness and cylindricity of the bearings are controlled within a very small range, which can meet the operation requirements of high-precision equipment.
Performance Characteristics:
- High-speed Performance: Due to its lightweight design and good lubrication performance, the thin-walled bearing with a nylon retainer can operate stably at high speeds, reduce the heat generated by centrifugal force and friction, and decrease the wear and fatigue of the bearing.
- Good Flexibility: The thin-walled structure gives the bearing good flexibility, allowing it to quickly respond to small displacements and vibrations of the shaft and adapt to complex working conditions.
- Low Friction Coefficient: The self-lubrication of the nylon retainer and the optimized design between the rolling elements and the rings result in a low friction coefficient of the bearing, which can effectively reduce energy consumption and improve the efficiency of the equipment.

Application

The bearings can be used in the following industries

Aerospace Field: In key components of aircraft such as engines, aviation instruments, and flight control systems, thin-walled bearings with nylon retainers are widely used due to their lightweight, high-speed, and high-precision characteristics. For example, in the main shaft system of an aircraft engine, high-precision thin-walled bearings are required to support the high-speed rotating shaft to ensure the stable operation and high efficiency of the engine.
Precision Instrument Field: In precision instruments such as optical microscopes, electron microscopes, and coordinate measuring machines, extremely high requirements are placed on the accuracy and stability of the bearings. Thin-walled bearings with nylon retainers can provide high-precision rotational support, ensuring the measurement accuracy and imaging quality of the instruments. In the rotating mechanism of the stage of a microscope, the use of thin-walled bearings can achieve precise angle adjustment and stable rotation.
Industrial Automation Field: In aspects such as robot joints, the transmission systems of automated production lines, and the main shafts and feed systems of CNC machine tools, thin-walled bearings with nylon retainers play an important role. They can meet the requirements of high-speed and high-precision movements, improving the production efficiency and machining accuracy of the equipment. For example, in the joints of robots, the use of thin-walled bearings can make the joint movements more flexible and precise, while reducing the weight of the robot.
Medical Device Field: In some precision medical devices such as CT scanners, magnetic resonance imaging (MRI) devices, and medical robots, thin-walled bearings with nylon retainers are used to support the rotating components. They need to have the performance of high precision, low noise, and low vibration to ensure the accurate operation of the medical devices and the safety of patients. For example, in the rotating gantry of a CT scanner, thin-walled bearings are used to achieve fast and stable rotation, ensuring the quality of the images.