Hollow Bearing Sleeve 3*5*6/3*7*6/3*8*3

Provide precise support and positioning to ensure motion accuracy. Many precision equipment or special mechanisms have extremely high requirements for the size, shape tolerance, and surface smoothness of bearing holes, and the equipment base material (such as ordinary cast iron or light alloy) may not be able to directly meet these requirements. At this point, a precision machined non-standard steel sleeve can serve as a high-precision inner hole liner, providing perfect support and guidance for the shaft or pin. It ensures the stability of the rotation center, reduces shaking and deflection, and is crucial for ensuring the motion accuracy of the entire transmission system or actuator. Especially in high or low temperature environments, selecting a steel sleeve that matches the thermal expansion coefficient of the shaft material can effectively counteract thermal deformation and maintain a constant fit clearance, which is difficult to achieve with standard parts.
Optimize materials and adapt to working conditions to cope with special environments. The selection of materials and processes for standard steel sleeves is limited. Non standard steel sleeves can be tailored according to specific working conditions. For example, in corrosive environments, stainless steel can be used; When higher wear resistance is required, surface quenching, carburizing treatment or chrome plating can be carried out; In situations where self-lubricating is required, composite liners embedded with graphite or PTFE can be designed. When the device substrate is made of soft material (such as aluminum alloy), pressing a steel sleeve can effectively improve the strength of the threaded connection and prevent tooth slippage. The customization ability of this material and process enables non-standard steel sleeves to handle extreme conditions such as high temperature, low temperature, heavy load, corrosion, and oil-free lubrication with ease.
Undertake important functions of repair and renovation. After long-term use, the original bearing holes or fitting holes of the equipment may exceed the size tolerance due to wear or damage. Remanufacturing the entire body component is costly and time-consuming. At this point, non-standard steel sleeves become the most economical and efficient repair solution. By expanding the damaged hole and pressing in a slightly larger customized steel sleeve, not only can the original size of the hole be restored, but its performance can also be improved by selecting better materials, giving old equipment a new lease on life. This is widely used in the field of equipment remanufacturing and maintenance

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