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轴承维修保养注意事项

Precautions For Repair

Rolling ina bearing is a precision part, so it should be used with great caution. Even high-quality ina bearings will not get the Precautions For expected effect if they are not used properly.

Precautions for the use of INA Bearing are as follows.

Keep ina bearings and their surroundings clean

Even the tiny dust invisible to the naked eye will bring adverse Precautions For effects to ina bearings. 所以, keep the surroundings clean so that dust will not invade ina bearings.

Use with care.

Strong impact on INA Bearing in use will produce scars or indentation and induce accidents. 在严重的情况下, 它会导致裂缝和断裂, 这是必须注意的.

Use ina bearing special tool.

Special tools must be used and cannot be replaced at will.

Avoid rust of INA Bearing.

When operating ina bearings, hand sweat can cause rust. 注意用干净的手操作, 尽可能戴手套, and pay attention to Precautions For corrosive gases.

2. Installation

Whether ina bearing is installed correctly directly affects the accuracy, service life and performance of bearing. Precautions For Therefore, the design and assembly department should fully study the installation of INA Bearing and carry out it according to the operation standards. Operation standard items are usually as follows:

轴承维修保养注意事项

Clean INA Bearing and related parts

Check the size and accuracy of relevant parts

Installation

Check ina bearing after installation

Fill lubricant

When unpacking the bearing, it is hoped that the ina can be installed again. During general grease lubrication, the bearing is not cleaned, but directly filled with grease. In case of oil lubrication, it is generally not necessary to clean.

然而, ina bearings for Precautions For instrument or high-speed use should be cleaned with clean oil to remove the rust inhibitor coated on ina bearings. INA Bearing with rust inhibitor removed is easy to rust, so it cannot be placed at will.

此外, ina bearings sealed with grease can be used directly without cleaning.

The installation method of INA Bearing varies according to the bearing structure, 适合和条件. Since it is generally shaft rotation, 内圈需要过盈配合. Cylindrical bore ina bearings are usually pressed in with a press or hot installed. In the case of tapered hole, it is directly fixed on the tapered shaft or installed with a set sleeve.

Clearance fit is often used when installing to ina bearing seat. Precautions For When there is interference in the outer ring, it is usually pressed in by press or installed by cold shrinkage method after cooling.

Dry ice is used as the coolant. In the case of cold contraction installation, the moisture in the air will condense on the surface of the bearing. 所以, anti rust measures need to be taken.

3. Operation inspection

After the ina bearing is installed, 为了检查安装是否正确, the operation inspection shall be carried out. Small machinery can be rotated by hand to confirm Precautions For whether it rotates smoothly. 检查项目包括异物导致的运行不良, 疤痕和压痕,

安装不良、安装底座加工不良造成的扭矩不稳定, 间隙过小导致扭矩过大, 安装误差和密封摩擦, ETC. If there is no Precautions For abnormality, the power operation can be started.

大型机械无法手动旋转, 所以空载启动后应立即切断电源, 机器空转. 检查是否有振动, 噪音, 旋转部件的接触, ETC. 确认无异常后, 进入电源操作.

电源操作, 从空载和低速开始, 慢慢增加到规定条件下的额定运行. 在试运行期间, 检查项目是否有异响,

ina bearing temperature change, 润滑剂泄漏或变色, ETC. 如果发现任何异常, 立即停止操作, 检查机器, 必要时拆下轴承检查.

Ina bearing temperature can generally be inferred from the external temperature of the bearing pedestal. 然而, it is more accurate to directly measure the temperature of ina bearing outer ring with oil hole.

The temperature of INA Bearing increases gradually from the beginning of operation, 并且温度通常在之后稳定 1 ~ 2 小时. If ina bearing is not installed properly, 温度会急剧上升, 导致异常高温. The reasons include too much lubricant,

too small clearance of INA Bearing, 安装不良, 密封装置摩擦过大, ETC. 在高速旋转的情况下, the wrong selection of INA Bearing Structure and lubrication mode is also the reason.

The rotating sound of ina bearing is checked with stethoscope, 并且有强烈的金属噪音, 异响, 不规则的声音和其他异常迹象. 原因是润滑不良, poor accuracy of shaft or ina bearing seat, 轴承损坏, 异物侵入, ETC.

4. 拆卸

Ina bearings need to be removed during regular maintenance and replacement. After disassembly, if you want to continue to use or need to check and investigate, disassembly should be as careful as installation. Pay attention not to damage the bearing and parts,

especially the interference fit bearing, which is difficult to operate, so it should be considered in advance in the design stage to facilitate disassembly. It is also very important to design and make disassembly tools according to needs.

During disassembly, the disassembly method and sequence shall be studied according to the drawings, and the matching conditions of INA Bearing shall be investigated, so that the disassembly operation can be carried out smoothly.

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