(RA2FE)插装式定量马达

(RA2FE)进口插装式定量马达 产品特点 Product features

采用斜轴式设计的轴向锥形柱塞，可用于开式回路和闭式回路中的静液压传动retz品牌  The axial conical plunger with inclined shaft design can be used for hydrostatic transmission in open circuit and closed circuit

规格28-180  Size 28-180

额定压力350bar，最高压力∶400bar  Rated pressure 350bar, maximum pressure: 400bar

直接插装入齿轮变速箱中，节省安装空间  It is directly inserted into the gear box to save installation space

较高的转速,扭矩输出较大 Higher speed, larger torque output

较大的功率重量比,具有高的总效率  High power to weight ratio and high overall efficiency

易于安装，仅需插入至机械齿轮箱中即可 Easy to install, just insert into the mechanical gearbox

性能参数 performance parameter

(RA2FE)进口插装式定量马达 技术参数technical parameter

关于选择液压油的详细信息  Details about selecting hydraulic oil

要正确地选择液压油，需要知道与环境温度相关的工作温度∶闭式回路中的油路温度、开式回路中的油箱温度。选择液压油时，工作温度范围内的工作粘度应处于最佳范围内。我们建议在所有情况下都应选择较高的粘度等级。To select hydraulic oil correctly, it is necessary to know the working temperature related to the ambient temperature: the oil circuit temperature in the closed circuit and the oil tank temperature in the open circuit. When selecting hydraulic oil, the working viscosity within the working temperature range should be in the best range. We recommend choosing a higher viscosity grade in all cases.

注意 be careful

壳体泄油温度（受压力和速度的影响）可能高于油路温度或油箱温度。但部件任何部位的温度均不可高于15℃。在确定轴承处液压油粘度时，应将下面指定的温差考虑在内。The oil drain temperature of the housing (affected by pressure and speed) may be higher than the oil circuit temperature or the oil tank temperature. However, the temperature of any part of the component shall not be higher than 15 ℃. When determining the viscosity of hydraulic oil at the bearing, the temperature difference specified below should be taken into account.

液压油的过滤 Filtration of hydraulic oil

更精细的过滤可以提高液压油的清洁度，从而延长轴向柱塞单元的使用寿命。Finer filtration can improve the cleanliness of the hydraulic oil, thereby extending the service life of the axial piston unit

为了确保轴向柱塞单元的功能可靠性，必须对液压油进行测量总量分析，以确定固体污染物的数量，并判断其清洁度是否符合ISO 4406标准的要求。清洁度至少应维持在20/18/15级。In order to ensure the functional reliability of the axial piston unit, the hydraulic oil must be measured and analyzed to determine the amount of solid pollutants and judge whether its cleanliness meets the requirements of ISO 4406 standard. Cleanliness should be maintained at least at grade 20/18/15

当液压油温度非常高（90℃至最高115℃）时，清洁度至少应达到ISO4406标准的19/17/14级。When the hydraulic oil temperature is very high (90 ℃ to 115 ℃), the cleanliness should at least reach 19/17/14 level of ISO4406 standard

轴封 Shaft seal

允许的压力负载 Allowable pressure load

轴封的使用寿命受轴向柱塞单元转速和壳体泄油压力（外壳压力）的影响。外壳和环境压力的平均压差为2bar，在正常的工作温度下不会持续超过该值。瞬时压力峰值（t<0.1s）最高允许用值为10 bar。轴封的使用寿命会随压力峰值出现频率的增加而缩短。外壳压力必须等于或高于环境压力。The service life of the shaft seal is affected by the rotating speed of the axial plunger unit and the oil drain pressure of the housing (housing pressure). The average pressure difference between the shell and the ambient pressure is 2bar, which will not be continuously exceeded under normal operating temperature. The maximum allowable value of instantaneous pressure peak (t<0.1s) is 10 bar. The service life of the shaft seal will be shortened with the increase of the frequency of pressure peak. The enclosure pressure must be equal to or higher than the ambient pressure.

温度范围 temperature range

FKM轴封可在壳体泄油温度为-25℃至+115℃的条件下使用 FKM shaft seal can be used when the oil drain temperature of the shell is -25 ℃ to +115 ℃

注意 be careful

对于-25℃以下的应用情况，需要使用NBR轴封（允许温度范围∶-40℃至+90℃）For applications below -25 ℃, NBR shaft seals are required (allowable temperature range: -40 ℃ to +90 ℃)