| 摘要 |
A bearing wrench comprising a casing as main support, with at least one piston coupling hole, a synchronizing device, and closing caps, power cylinder, a cylinder thrust spring and a connection screw between the boxes, wherein the synchronizing device with the help of the cylinders exert force on the bolts for the securing thereof and with the advantage of being able to releasing by the same synchronizing device housed in the nut driving wrench which may be hydraulically and manually used.
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