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  • 液压扳手选型原则-BAIER标准
  • 本站编辑:杭州耐准精密机械有限公司发布日期:2019-08-15 16:10 浏览次数:

1、螺栓规格

 

  一般有几种规格,例如M36、M42、M48,如果不说螺母多大,是按公制螺栓螺母副配套BAIER适配套筒的对边,M36在的螺母六角对边是55,M42是65,M48是75。如螺栓规格相关太大,要选用两种型号扳手。

 

  2、螺栓扭矩

 

  杭州耐准精密机械有限公司提醒:扭矩大小是选择液压扳手最关键的参数,螺栓不同扭矩不同,同样的螺栓材质不同扭矩不同,同样材质不同工况的扭矩也不同,用于轧机设备和化工设备上螺栓扭矩是不一样的,一般的设计图 纸都会给出扭矩大小,如不给,会给出相应的标准号,如重型机器设备是采用国标—JB/T5000.10-2007,如8.8级M42的螺栓的扭矩为2806Nm,M36为1749Nm,M48为4236Nm,以上三种螺栓可以选一种型号的扳手。

 

  3、螺栓螺母空间位置

 

  如果没有空间限制,哪个个型号的扳手都可以使用,驱动式液压扳手最为经济;如螺栓拧好后露出的螺纹较长,最好是中空式液压扳手,如螺栓上面有空间有限,最好也是中空式液压扳手,如螺母 间距离狭窄,可选用驱动式液压扳手。

1. Bolt specification

Generally there are several specifications, such as M36, M42, M48, if not the size of the nut, according to the metric bolt nut pair matching BAIER fitting sleeve side, M36 in the hexagon nut side is 55, M42 is 65, M48 is 75. If the bolt specifications are too large, choose two types of wrench.

2. Bolt torque

Hangzhou naizhun precision machinery co., LTD. Torque size is the most key parameters choosing hydraulic wrench, different bolt torque is different, the same bolt material is qualitative different torque, torque of different working conditions, the same material is different also, used for rolling mill equipment and chemical equipment bolt torque is not the same, the general design of paper will be given torque size, such as not to give, give the corresponding standards, such as heavy machinery equipment is the gb, JB/T5000.10-2007, such as a 8.8 magnitude of M42 bolt torque of 2806 nm, M36 is 1749 nm, M48 is 4236 nm, all three of these bolts can choose a type of wrench.

3. Spatial location of bolts and nuts

If there is no space limit, which type of wrench can be used, the most economical driven hydraulic wrench; If the screw screw is long, the best is the hollow type hydraulic wrench, such as the bolt above the space is limited, the best is also the hollow type hydraulic wrench, such as the narrow distance between the nuts, can choose the drive type hydraulic wrench.