Spherical roller bearing type 4: MA type

调心滚子轴承类型四：MA型

MA type spherical roller bearing

Structure introduction: solid alloy copper cage, external guide double semi-solid cage, outer diameter surface is spherical arc surface, external guide solid cage solves the impact of load on the cage.

Advantages and characteristics: can withstand large impact load.

Application areas: vibration, road roller, pile driver.

MA type: adopts external guide brass alloy (steel plate alloy stamping) solid cage, the outer diameter surface of the cage is spherical arc surface, there are two external guide double semi-solid cages in relative positions, and there are multiple oil grooves distributed along the circumference on the outer spherical surface perpendicular to the contact end surface of the two double semi-solid cages, which enhances the lubrication effect.

MA type spherical roller bearings are mostly used in mining vibration machinery and equipment, vibrating screen machinery, and vibration motors, and are one of the key components of such equipment. This type of bearing has harsh working conditions, not only with high environmental humidity, many dust particles, high speed, high temperature, but also with strong vibration impact, resulting in a very large working load.

The bearing has the advantages of strong load-bearing capacity, good impact resistance, high reliability, good lubrication performance, and can overcome the flexural deformation of the shaft. Generally speaking, the dimensional tolerance is P6 and the running tolerance is P5. The tolerances are indeed fixed and can be measured according to the imperial or metric standards. Due to the high heat generated by the bearing, the clearance is generally adjusted to a larger value. This clearance can be calculated, mainly based on the original clearance, tolerance fit and temperature rise.

MA型调心滚子轴承

架构介绍：实体合金铜保持架，外引导双半实体保持架，外径面为球弧面，外引导实体保持器解决了受载荷对保持器的冲击。

优势特点：能承受较大的冲击载额。

应用领域：振动、压路机、打桩机。

MA型：采用外引导黄铜合金（钢板合金冲压）实体保持架，保持架外径面为球弧面，有两个相对位置的外引导双半实体保持架，垂直于两个双半实体保持架接触端面的外球面上有多个沿圆周分布的油槽，增强了润滑效果。

MA型调心滚子轴承多用于矿山振动机械设备、振动筛机械、振动电机上，是此类设备的关键部件之一。这种轴承工况条件恶劣，不仅环境湿度大，粉尘颗粒多，转速高，温度高，而且有强烈振动冲击，导致工作负荷非常大。

轴承具备承载能力强，耐冲击性能好，可靠性高，润滑性能好，同时能克服轴的挠曲变形的优点。一般来说，尺寸公差为P6，运转公差为P5，公差的确都是固定的，可以按照英制、也可以按照公制标准来衡量；由于轴承发热量大，所以游隙一般调整较大。这个游隙可以计算得出，主要要依据原有游隙，公差配合和温升就可以了。