The unique advantage of hydraulic torque wrench
What makes a hydraulic torque wrench work is that it generates torque using only hydraulic means, it is self ratcheting, and it must have an accurate way to measure the amount of torque applied to the fastener. A holding pawl design is popular amongst most manufacturers to lock the wrench in position, but each have some claim that there design is superior. I say whichever one works, works. These wrenches typically have an accuracy rating of +/- 3%, with a high repeatability rate. This makes them suitable for large bolts that need a high degree of accuracy. The biggest advantage of a hydraulic wrench doesn't have anything to do with performance, but with those who use them - these torque wrenches are significantly quieter than similar output pneumatic impact wrenches. That is a benefit that you can't measure in strength, repeatability, or work output increases - it is about the health of those who use it.
有一种 突出的液压扳手：最大工作压力70 Mpa; 保持精度±3％。5种型号，范围从225-44593N.m 360 * 180度旋转和360 * 360度旋转，使扳手可以自由操作，没有空间限制。当扳手直接操作螺母时，更准确，更准确。紧凑的设计，更长的臂完全提高了可靠性紧凑的设计采用先进的铝钛合金原料，高强度。新的锁定连接器确保油可以自由进出。
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